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    <link:label id="lab_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_2F0A7E774152997D48B05DBF24A6A7F8_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_2F0A7E774152997D48B05DBF24A6A7F8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Unused Capacity, Commitment Fee Percentage</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_2F0A7E774152997D48B05DBF24A6A7F8_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_2F0A7E774152997D48B05DBF24A6A7F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Unused Capacity, Commitment Fee Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage" xlink:label="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_2F0A7E774152997D48B05DBF24A6A7F8" xlink:type="locator" />
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    <link:label id="lab_htld_DebtInstrumentCovenantLeverageRatio_868CAB7FDD083D56F92C5DBF24A630FF_terseLabel_en-US" xlink:label="lab_htld_DebtInstrumentCovenantLeverageRatio_868CAB7FDD083D56F92C5DBF24A630FF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Covenant, Leverage Ratio</link:label>
    <link:label id="lab_htld_DebtInstrumentCovenantLeverageRatio_868CAB7FDD083D56F92C5DBF24A630FF_label_en-US" xlink:label="lab_htld_DebtInstrumentCovenantLeverageRatio_868CAB7FDD083D56F92C5DBF24A630FF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Covenant, Leverage Ratio</link:label>
    <link:label id="lab_htld_DebtInstrumentCovenantLeverageRatio_868CAB7FDD083D56F92C5DBF24A630FF_documentation_en-US" xlink:label="lab_htld_DebtInstrumentCovenantLeverageRatio_868CAB7FDD083D56F92C5DBF24A630FF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Covenant, Leverage Ratio</link:label>
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    <link:label id="lab_htld_DebtCovenantMinimumNetIncomeRequirement_22AC81CA3B1982820A155DBF24A6E508_label_en-US" xlink:label="lab_htld_DebtCovenantMinimumNetIncomeRequirement_22AC81CA3B1982820A155DBF24A6E508" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Covenant, Minimum Net Income Requirement</link:label>
    <link:label id="lab_htld_DebtCovenantMinimumNetIncomeRequirement_22AC81CA3B1982820A155DBF24A6E508_documentation_en-US" xlink:label="lab_htld_DebtCovenantMinimumNetIncomeRequirement_22AC81CA3B1982820A155DBF24A6E508" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Covenant, Minimum Net Income Requirement</link:label>
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    <link:label id="lab_htld_DebtCovenantMinimumTangibleNetWorth_11FF95027FB1D6158CA15DBF24A68248_label_en-US" xlink:label="lab_htld_DebtCovenantMinimumTangibleNetWorth_11FF95027FB1D6158CA15DBF24A68248" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Covenant, Minimum Tangible Net Worth</link:label>
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    <link:label id="lab_us-gaap_LettersOfCreditOutstandingAmount_34CB75BF75025C821AFB5DBF24A6FF1E_terseLabel_en-US" xlink:label="lab_us-gaap_LettersOfCreditOutstandingAmount_34CB75BF75025C821AFB5DBF24A6FF1E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Letters of Credit Outstanding, Amount</link:label>
    <link:label id="lab_us-gaap_LettersOfCreditOutstandingAmount_34CB75BF75025C821AFB5DBF24A6FF1E_label_en-US" xlink:label="lab_us-gaap_LettersOfCreditOutstandingAmount_34CB75BF75025C821AFB5DBF24A6FF1E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Letters of Credit Outstanding, Amount</link:label>
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    <link:label id="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_7E5C2A6A6D33E1CDF9505DBF24A60387_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_7E5C2A6A6D33E1CDF9505DBF24A60387" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Current Borrowing Capacity</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_7E5C2A6A6D33E1CDF9505DBF24A60387_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_7E5C2A6A6D33E1CDF9505DBF24A60387" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Current Borrowing Capacity</link:label>
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    <link:label id="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_D4C3CC6A352D7574EA465DBF24B62B97_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_D4C3CC6A352D7574EA465DBF24B62B97" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stockholders' Equity</link:label>
    <link:label id="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_D4C3CC6A352D7574EA465DBF24B62B97_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_D4C3CC6A352D7574EA465DBF24B62B97" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Note Disclosure [Text Block]</link:label>
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    <link:label id="lab_us-gaap_StatementOfStockholdersEquityAbstract_83D2661BB952AE7874DEC30ADDA8B958_label_en-US" xlink:label="lab_us-gaap_StatementOfStockholdersEquityAbstract_83D2661BB952AE7874DEC30ADDA8B958" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Stockholders' Equity [Abstract]</link:label>
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    <link:label id="lab_us-gaap_StatementTable_7B1B1FA336A4265AD37DC30ADDA961C3_terseLabel_en-US" xlink:label="lab_us-gaap_StatementTable_7B1B1FA336A4265AD37DC30ADDA961C3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement [Table]</link:label>
    <link:label id="lab_us-gaap_StatementTable_7B1B1FA336A4265AD37DC30ADDA961C3_label_en-US" xlink:label="lab_us-gaap_StatementTable_7B1B1FA336A4265AD37DC30ADDA961C3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement [Table]</link:label>
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    <link:label id="lab_us-gaap_StatementEquityComponentsAxis_982D46915D0ABB58439EC30ADDA9DF95_label_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis_982D46915D0ABB58439EC30ADDA9DF95" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Components [Axis]</link:label>
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    <link:label id="lab_us-gaap_TreasuryStockMember_2157AB05A9853BCF9299C30ADDA965C1_terseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockMember_2157AB05A9853BCF9299C30ADDA965C1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Treasury Stock</link:label>
    <link:label id="lab_us-gaap_TreasuryStockMember_2157AB05A9853BCF9299C30ADDA965C1_label_en-US" xlink:label="lab_us-gaap_TreasuryStockMember_2157AB05A9853BCF9299C30ADDA965C1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Treasury Stock [Member]</link:label>
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    <link:label id="lab_us-gaap_StatementLineItems_1669A2E28C934A9E7B82C30ADDA93E4F_terseLabel_en-US" xlink:label="lab_us-gaap_StatementLineItems_1669A2E28C934A9E7B82C30ADDA93E4F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement [Line Items]</link:label>
    <link:label id="lab_us-gaap_StatementLineItems_1669A2E28C934A9E7B82C30ADDA93E4F_label_en-US" xlink:label="lab_us-gaap_StatementLineItems_1669A2E28C934A9E7B82C30ADDA93E4F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement [Line Items]</link:label>
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    <link:label id="lab_us-gaap_StockholdersEquity_7A24F3205EBE1497591EC30ADDA91163_periodStartLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity_7A24F3205EBE1497591EC30ADDA91163" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance</link:label>
    <link:label id="lab_us-gaap_StockholdersEquity_7A24F3205EBE1497591EC30ADDA91163_label_en-US" xlink:label="lab_us-gaap_StockholdersEquity_7A24F3205EBE1497591EC30ADDA91163" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Attributable to Parent</link:label>
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    <link:label id="lab_us-gaap_DividendsCommonStock_D2D12334252B7EDF848EC30ADDA9FDBA_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DividendsCommonStock_D2D12334252B7EDF848EC30ADDA9FDBA" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Dividends on common stock, $0.04 per share</link:label>
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    <link:label id="lab_us-gaap_TreasuryStockValueAcquiredCostMethod_EAFB3E2715338AABC674C30ADDA9622B_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockValueAcquiredCostMethod_EAFB3E2715338AABC674C30ADDA9622B" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Repurchases of common stock</link:label>
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    <link:label id="lab_htld_PropertyPlantandDepreciationAbstract_A90DBC7ED329E6F0F9FD5DBF24CDE85A_label_en-US" xlink:label="lab_htld_PropertyPlantandDepreciationAbstract_A90DBC7ED329E6F0F9FD5DBF24CDE85A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Depreciation [Abstract]</link:label>
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    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_280D9B5AB9D8F06B0B575DBF24CD0799_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_280D9B5AB9D8F06B0B575DBF24CD0799" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Type [Axis]</link:label>
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    <link:label id="lab_us-gaap_IncomeStatementAbstract_B4EEE3F7195199A712F85DBF25012C96_label_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract_B4EEE3F7195199A712F85DBF25012C96" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Statement [Abstract]</link:label>
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    <link:label id="lab_us-gaap_Revenues_5D44B532F52447DBD2685DBF25023083_terseLabel_en-US" xlink:label="lab_us-gaap_Revenues_5D44B532F52447DBD2685DBF25023083" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Revenue</link:label>
    <link:label id="lab_us-gaap_Revenues_5D44B532F52447DBD2685DBF25023083_label_en-US" xlink:label="lab_us-gaap_Revenues_5D44B532F52447DBD2685DBF25023083" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenues</link:label>
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    <link:label id="lab_us-gaap_OperatingExpensesAbstract_7489352E1D5BC97B3EFF5DBF25025ECE_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingExpensesAbstract_7489352E1D5BC97B3EFF5DBF25025ECE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Expenses</link:label>
    <link:label id="lab_us-gaap_OperatingExpensesAbstract_7489352E1D5BC97B3EFF5DBF25025ECE_label_en-US" xlink:label="lab_us-gaap_OperatingExpensesAbstract_7489352E1D5BC97B3EFF5DBF25025ECE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Expenses [Abstract]</link:label>
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    <link:label id="lab_us-gaap_LaborAndRelatedExpense_47B32F24099A285E7C6F5DBF25029FBA_terseLabel_en-US" xlink:label="lab_us-gaap_LaborAndRelatedExpense_47B32F24099A285E7C6F5DBF25029FBA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Salaries, wages, and benefits</link:label>
    <link:label id="lab_us-gaap_LaborAndRelatedExpense_47B32F24099A285E7C6F5DBF25029FBA_label_en-US" xlink:label="lab_us-gaap_LaborAndRelatedExpense_47B32F24099A285E7C6F5DBF25029FBA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Labor and Related Expense</link:label>
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    <link:label id="lab_htld_RentAndPurchasedTransportation_D7D6784B6A7B0F77049C5DBF2502844D_terseLabel_en-US" xlink:label="lab_htld_RentAndPurchasedTransportation_D7D6784B6A7B0F77049C5DBF2502844D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rent and purchased transportation</link:label>
    <link:label id="lab_htld_RentAndPurchasedTransportation_D7D6784B6A7B0F77049C5DBF2502844D_label_en-US" xlink:label="lab_htld_RentAndPurchasedTransportation_D7D6784B6A7B0F77049C5DBF2502844D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Rent and purchased transportation</link:label>
    <link:label id="lab_htld_RentAndPurchasedTransportation_D7D6784B6A7B0F77049C5DBF2502844D_documentation_en-US" xlink:label="lab_htld_RentAndPurchasedTransportation_D7D6784B6A7B0F77049C5DBF2502844D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Payment of rentals incurred in the period on property and equipment including payments made to independent contractors for providing and operating revenue equipment owned and maintained by independent contractors.</link:label>
    <link:loc xlink:href="htld-20170630.xsd#htld_RentAndPurchasedTransportation" xlink:label="loc_htld_RentAndPurchasedTransportation_D7D6784B6A7B0F77049C5DBF2502844D" xlink:type="locator" />
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    <link:label id="lab_us-gaap_FuelCosts_EAD940B45790E615D8555DBF2502293F_terseLabel_en-US" xlink:label="lab_us-gaap_FuelCosts_EAD940B45790E615D8555DBF2502293F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fuel</link:label>
    <link:label id="lab_us-gaap_FuelCosts_EAD940B45790E615D8555DBF2502293F_label_en-US" xlink:label="lab_us-gaap_FuelCosts_EAD940B45790E615D8555DBF2502293F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fuel Costs</link:label>
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    <link:label id="lab_us-gaap_CostOfServicesMaintenanceCosts_A7E3C698A2B8C653BBC25DBF2502BB1A_terseLabel_en-US" xlink:label="lab_us-gaap_CostOfServicesMaintenanceCosts_A7E3C698A2B8C653BBC25DBF2502BB1A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operations and maintenance</link:label>
    <link:label id="lab_us-gaap_CostOfServicesMaintenanceCosts_A7E3C698A2B8C653BBC25DBF2502BB1A_label_en-US" xlink:label="lab_us-gaap_CostOfServicesMaintenanceCosts_A7E3C698A2B8C653BBC25DBF2502BB1A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of Services, Maintenance Costs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CostOfServicesMaintenanceCosts" xlink:label="loc_us-gaap_CostOfServicesMaintenanceCosts_A7E3C698A2B8C653BBC25DBF2502BB1A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostOfServicesMaintenanceCosts_A7E3C698A2B8C653BBC25DBF2502BB1A" xlink:to="lab_us-gaap_CostOfServicesMaintenanceCosts_A7E3C698A2B8C653BBC25DBF2502BB1A" xlink:type="arc" />
    <link:label id="lab_us-gaap_CostOfServicesDirectTaxesAndLicensesCosts_B05E88B4EBDA6BCEC4B25DBF2502BF4F_terseLabel_en-US" xlink:label="lab_us-gaap_CostOfServicesDirectTaxesAndLicensesCosts_B05E88B4EBDA6BCEC4B25DBF2502BF4F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating taxes and licenses</link:label>
    <link:label id="lab_us-gaap_CostOfServicesDirectTaxesAndLicensesCosts_B05E88B4EBDA6BCEC4B25DBF2502BF4F_label_en-US" xlink:label="lab_us-gaap_CostOfServicesDirectTaxesAndLicensesCosts_B05E88B4EBDA6BCEC4B25DBF2502BF4F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of Services, Direct Taxes and Licenses Costs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CostOfServicesDirectTaxesAndLicensesCosts" xlink:label="loc_us-gaap_CostOfServicesDirectTaxesAndLicensesCosts_B05E88B4EBDA6BCEC4B25DBF2502BF4F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostOfServicesDirectTaxesAndLicensesCosts_B05E88B4EBDA6BCEC4B25DBF2502BF4F" xlink:to="lab_us-gaap_CostOfServicesDirectTaxesAndLicensesCosts_B05E88B4EBDA6BCEC4B25DBF2502BF4F" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingInsuranceAndClaimsCostsProduction_4D870DE39E752F6B74655DBF2502B041_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingInsuranceAndClaimsCostsProduction_4D870DE39E752F6B74655DBF2502B041" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Insurance and claims</link:label>
    <link:label id="lab_us-gaap_OperatingInsuranceAndClaimsCostsProduction_4D870DE39E752F6B74655DBF2502B041_label_en-US" xlink:label="lab_us-gaap_OperatingInsuranceAndClaimsCostsProduction_4D870DE39E752F6B74655DBF2502B041" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Insurance and Claims Costs, Production</link:label>
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    <link:label id="lab_us-gaap_DirectCommunicationsAndUtilitiesCosts_46834765B1A52CEC572C5DBF2507B1CF_terseLabel_en-US" xlink:label="lab_us-gaap_DirectCommunicationsAndUtilitiesCosts_46834765B1A52CEC572C5DBF2507B1CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Communications and utilities</link:label>
    <link:label id="lab_us-gaap_DirectCommunicationsAndUtilitiesCosts_46834765B1A52CEC572C5DBF2507B1CF_label_en-US" xlink:label="lab_us-gaap_DirectCommunicationsAndUtilitiesCosts_46834765B1A52CEC572C5DBF2507B1CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Direct Communications and Utilities Costs</link:label>
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    <link:label id="lab_htld_Depreciationandamortizationexcludingdepreciationoncommunicationequipment_869CDB78BE0CDA5EB2D95DBF250749BE_verboseLabel_en-US" xlink:label="lab_htld_Depreciationandamortizationexcludingdepreciationoncommunicationequipment_869CDB78BE0CDA5EB2D95DBF250749BE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Depreciation and amortization</link:label>
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    <link:label id="lab_us-gaap_OtherCostAndExpenseOperating_123EA9F0BF4A301763FE5DBF250734EA_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCostAndExpenseOperating_123EA9F0BF4A301763FE5DBF250734EA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other operating expenses</link:label>
    <link:label id="lab_us-gaap_OtherCostAndExpenseOperating_123EA9F0BF4A301763FE5DBF250734EA_label_en-US" xlink:label="lab_us-gaap_OtherCostAndExpenseOperating_123EA9F0BF4A301763FE5DBF250734EA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Cost and Expense, Operating</link:label>
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    <link:label id="lab_us-gaap_GainLossOnDispositionOfAssets_BCB99BA78C2560F017105DBF2507AC17_negatedLabel_en-US" xlink:label="lab_us-gaap_GainLossOnDispositionOfAssets_BCB99BA78C2560F017105DBF2507AC17" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Gain on disposal of property and equipment</link:label>
    <link:label id="lab_us-gaap_GainLossOnDispositionOfAssets_BCB99BA78C2560F017105DBF2507AC17_label_en-US" xlink:label="lab_us-gaap_GainLossOnDispositionOfAssets_BCB99BA78C2560F017105DBF2507AC17" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property</link:label>
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    <link:label id="lab_us-gaap_CostsAndExpenses_2612CF96DD9634C040A75DBF25087049_label_en-US" xlink:label="lab_us-gaap_CostsAndExpenses_2612CF96DD9634C040A75DBF25087049" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Costs and Expenses</link:label>
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    <link:label id="lab_us-gaap_AssetsCurrentAbstract_A6F8E4F48530EB29D5695DBF2530AA73_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_A6F8E4F48530EB29D5695DBF2530AA73" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">CURRENT ASSETS</link:label>
    <link:label id="lab_us-gaap_AssetsCurrentAbstract_A6F8E4F48530EB29D5695DBF2530AA73_label_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_A6F8E4F48530EB29D5695DBF2530AA73" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, Current [Abstract]</link:label>
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    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_0279C9C38227E59E35B25DBF2530AFE1_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_0279C9C38227E59E35B25DBF2530AFE1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
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    <link:label id="lab_us-gaap_AccountsReceivableNetCurrent_43B0134A549076FF37465DBF25308CC4_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_43B0134A549076FF37465DBF25308CC4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trade receivables, net</link:label>
    <link:label id="lab_us-gaap_AccountsReceivableNetCurrent_43B0134A549076FF37465DBF25308CC4_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_43B0134A549076FF37465DBF25308CC4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Receivable, Net, Current</link:label>
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    <link:label id="lab_us-gaap_OtherPrepaidExpenseCurrent_9ED8E6E55F34E95350215DBF25303B08_label_en-US" xlink:label="lab_us-gaap_OtherPrepaidExpenseCurrent_9ED8E6E55F34E95350215DBF25303B08" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Prepaid Expense, Current</link:label>
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    <link:label id="lab_us-gaap_OtherAssetsCurrent_EA54B0C13784E9C5935C5DBF25303301_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_EA54B0C13784E9C5935C5DBF25303301" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other current assets</link:label>
    <link:label id="lab_us-gaap_OtherAssetsCurrent_EA54B0C13784E9C5935C5DBF25303301_label_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_EA54B0C13784E9C5935C5DBF25303301" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets, Current</link:label>
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    <link:label id="lab_us-gaap_IncomeTaxesReceivable_E11CFEA6F3012B1A2F135DBF2530AE7A_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxesReceivable_E11CFEA6F3012B1A2F135DBF2530AE7A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income tax receivable</link:label>
    <link:label id="lab_us-gaap_IncomeTaxesReceivable_E11CFEA6F3012B1A2F135DBF2530AE7A_label_en-US" xlink:label="lab_us-gaap_IncomeTaxesReceivable_E11CFEA6F3012B1A2F135DBF2530AE7A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Taxes Receivable, Current</link:label>
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    <link:label id="lab_us-gaap_DeferredTaxAssetsNetCurrent_0FB9B8DC638466ECFD6E5DBF2530E87F_label_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsNetCurrent_0FB9B8DC638466ECFD6E5DBF2530E87F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Tax Assets, Net of Valuation Allowance, Current</link:label>
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    <link:label id="lab_us-gaap_AssetsCurrent_956F0EA0FE136688CD305DBF2530DF6D_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrent_956F0EA0FE136688CD305DBF2530DF6D" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total current assets</link:label>
    <link:label id="lab_us-gaap_AssetsCurrent_956F0EA0FE136688CD305DBF2530DF6D_label_en-US" xlink:label="lab_us-gaap_AssetsCurrent_956F0EA0FE136688CD305DBF2530DF6D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, Current</link:label>
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    <link:label id="lab_us-gaap_AssetsNoncurrentAbstract_E93C18CC53181599F5F45DBF2530066E_label_en-US" xlink:label="lab_us-gaap_AssetsNoncurrentAbstract_E93C18CC53181599F5F45DBF2530066E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, Noncurrent [Abstract]</link:label>
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    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentGrossAbstract_0003FFA85725DCEFACC55DBF25302F50_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGrossAbstract_0003FFA85725DCEFACC55DBF25302F50" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">PROPERTY AND EQUIPMENT</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentGrossAbstract_0003FFA85725DCEFACC55DBF25302F50_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGrossAbstract_0003FFA85725DCEFACC55DBF25302F50" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Gross [Abstract]</link:label>
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    <link:label id="lab_us-gaap_LandAndLandImprovements_7138A8E32604584925095DBF25301ED4_terseLabel_en-US" xlink:label="lab_us-gaap_LandAndLandImprovements_7138A8E32604584925095DBF25301ED4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Land and land improvements</link:label>
    <link:label id="lab_us-gaap_LandAndLandImprovements_7138A8E32604584925095DBF25301ED4_label_en-US" xlink:label="lab_us-gaap_LandAndLandImprovements_7138A8E32604584925095DBF25301ED4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Land and Land Improvements</link:label>
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    <link:label id="lab_us-gaap_BuildingsAndImprovementsGross_F9FD3DB0D1BE91FB1C855DBF25311EC9_terseLabel_en-US" xlink:label="lab_us-gaap_BuildingsAndImprovementsGross_F9FD3DB0D1BE91FB1C855DBF25311EC9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Buildings</link:label>
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    <link:label id="lab_htld_RevenueEquipment_DF21A2376A4905E0EF275DBF2531E886_label_en-US" xlink:label="lab_htld_RevenueEquipment_DF21A2376A4905E0EF275DBF2531E886" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">REVENUE EQUIPMENT</link:label>
    <link:label id="lab_htld_RevenueEquipment_DF21A2376A4905E0EF275DBF2531E886_documentation_en-US" xlink:label="lab_htld_RevenueEquipment_DF21A2376A4905E0EF275DBF2531E886" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Carrying amount at the balance sheet date for long lived physical assets used in the normal conduct of business and not intended for resale.  Revenue equipment includes tractors and trailers used for purposes of providing transportation services.</link:label>
    <link:loc xlink:href="htld-20170630.xsd#htld_RevenueEquipment" xlink:label="loc_htld_RevenueEquipment_DF21A2376A4905E0EF275DBF2531E886" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_htld_RevenueEquipment_DF21A2376A4905E0EF275DBF2531E886" xlink:to="lab_htld_RevenueEquipment_DF21A2376A4905E0EF275DBF2531E886" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConstructionInProgressGross_D059AFFB8A3783F3E6965DBF25317E10_terseLabel_en-US" xlink:label="lab_us-gaap_ConstructionInProgressGross_D059AFFB8A3783F3E6965DBF25317E10" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Construction in progress</link:label>
    <link:label id="lab_us-gaap_ConstructionInProgressGross_D059AFFB8A3783F3E6965DBF25317E10_label_en-US" xlink:label="lab_us-gaap_ConstructionInProgressGross_D059AFFB8A3783F3E6965DBF25317E10" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Construction in Progress, Gross</link:label>
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    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_1A3DCF21EAC054614DE25DBF2531F251_totalLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_1A3DCF21EAC054614DE25DBF2531F251" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Gross</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_1A3DCF21EAC054614DE25DBF2531F251_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_1A3DCF21EAC054614DE25DBF2531F251" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_1A3DCF21EAC054614DE25DBF2531F251" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_7487F8799376929BCA815DBF25315C69_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_7487F8799376929BCA815DBF25315C69" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Less accumulated depreciation</link:label>
    <link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_7487F8799376929BCA815DBF25315C69_label_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_7487F8799376929BCA815DBF25315C69" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment</link:label>
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    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_9FDA48E59EF9E6FA89285DBF25312D59_totalLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_9FDA48E59EF9E6FA89285DBF25312D59" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Property and equipment, net</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_9FDA48E59EF9E6FA89285DBF25312D59_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_9FDA48E59EF9E6FA89285DBF25312D59" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_9FDA48E59EF9E6FA89285DBF25312D59" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_9FDA48E59EF9E6FA89285DBF25312D59" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_9FDA48E59EF9E6FA89285DBF25312D59" xlink:type="arc" />
    <link:label id="lab_us-gaap_Goodwill_E0140F1214CD43CC0B525DBF253199BD_terseLabel_en-US" xlink:label="lab_us-gaap_Goodwill_E0140F1214CD43CC0B525DBF253199BD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">GOODWILL</link:label>
    <link:label id="lab_us-gaap_Goodwill_E0140F1214CD43CC0B525DBF253199BD_label_en-US" xlink:label="lab_us-gaap_Goodwill_E0140F1214CD43CC0B525DBF253199BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_E0140F1214CD43CC0B525DBF253199BD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_E0140F1214CD43CC0B525DBF253199BD" xlink:to="lab_us-gaap_Goodwill_E0140F1214CD43CC0B525DBF253199BD" xlink:type="arc" />
    <link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_9BC17279ED89AB36C8775DBF2531AA00_terseLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_9BC17279ED89AB36C8775DBF2531AA00" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">OTHER INTANGIBLES, NET</link:label>
    <link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_9BC17279ED89AB36C8775DBF2531AA00_label_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_9BC17279ED89AB36C8775DBF2531AA00" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intangible Assets, Net (Excluding Goodwill)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_9BC17279ED89AB36C8775DBF2531AA00" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_9BC17279ED89AB36C8775DBF2531AA00" xlink:to="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_9BC17279ED89AB36C8775DBF2531AA00" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredIncomeTaxAssetsNet_B7D2ADFBFC31B5ED9E2B5DBF25319375_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxAssetsNet_B7D2ADFBFC31B5ED9E2B5DBF25319375" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred Income Taxes, Net</link:label>
    <link:label id="lab_us-gaap_DeferredIncomeTaxAssetsNet_B7D2ADFBFC31B5ED9E2B5DBF25319375_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxAssetsNet_B7D2ADFBFC31B5ED9E2B5DBF25319375" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Income Tax Assets, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredIncomeTaxAssetsNet" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_B7D2ADFBFC31B5ED9E2B5DBF25319375" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredIncomeTaxAssetsNet_B7D2ADFBFC31B5ED9E2B5DBF25319375" xlink:to="lab_us-gaap_DeferredIncomeTaxAssetsNet_B7D2ADFBFC31B5ED9E2B5DBF25319375" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAssetsNoncurrent_E7004B26A5A28FD9B6475DBF253109A9_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_E7004B26A5A28FD9B6475DBF253109A9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">OTHER ASSETS</link:label>
    <link:label id="lab_us-gaap_OtherAssetsNoncurrent_E7004B26A5A28FD9B6475DBF253109A9_label_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_E7004B26A5A28FD9B6475DBF253109A9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_E7004B26A5A28FD9B6475DBF253109A9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_E7004B26A5A28FD9B6475DBF253109A9" xlink:to="lab_us-gaap_OtherAssetsNoncurrent_E7004B26A5A28FD9B6475DBF253109A9" xlink:type="arc" />
    <link:label id="lab_us-gaap_Assets_DB24D60232E18556C50A5DBF25311C93_totalLabel_en-US" xlink:label="lab_us-gaap_Assets_DB24D60232E18556C50A5DBF25311C93" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:label id="lab_us-gaap_Assets_DB24D60232E18556C50A5DBF25311C93_label_en-US" xlink:label="lab_us-gaap_Assets_DB24D60232E18556C50A5DBF25311C93" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_DB24D60232E18556C50A5DBF25311C93" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets_DB24D60232E18556C50A5DBF25311C93" xlink:to="lab_us-gaap_Assets_DB24D60232E18556C50A5DBF25311C93" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_2B7377E989EFFB3224255DBF253126EA_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_2B7377E989EFFB3224255DBF253126EA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">LIABILITIES AND STOCKHOLDERS' EQUITY</link:label>
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_2B7377E989EFFB3224255DBF253126EA_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_2B7377E989EFFB3224255DBF253126EA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities and Equity [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_2B7377E989EFFB3224255DBF253126EA" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_7182E363BE6A9A10A6775DBF253746D2_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_7182E363BE6A9A10A6775DBF253746D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">CURRENT LIABILITIES</link:label>
    <link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_7182E363BE6A9A10A6775DBF253746D2_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_7182E363BE6A9A10A6775DBF253746D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, Current [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_7182E363BE6A9A10A6775DBF253746D2" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_BC8AEA1FCCDE496BC1515DBF25376E96_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_BC8AEA1FCCDE496BC1515DBF25376E96" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable and accrued liabilities</link:label>
    <link:label id="lab_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_BC8AEA1FCCDE496BC1515DBF25376E96_label_en-US" xlink:label="lab_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_BC8AEA1FCCDE496BC1515DBF25376E96" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Payable and Accrued Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_BC8AEA1FCCDE496BC1515DBF25376E96" xlink:type="locator" />
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    <link:label id="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_63F06D8E60D22FF0468E5DBF25375504_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_63F06D8E60D22FF0468E5DBF25375504" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Compensation and benefits</link:label>
    <link:label id="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_63F06D8E60D22FF0468E5DBF25375504_label_en-US" xlink:label="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_63F06D8E60D22FF0468E5DBF25375504" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee-related Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_63F06D8E60D22FF0468E5DBF25375504" xlink:type="locator" />
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    <link:label id="lab_us-gaap_SelfInsuranceReserveCurrent_63805625FDA61CD2F5B65DBF2537A605_terseLabel_en-US" xlink:label="lab_us-gaap_SelfInsuranceReserveCurrent_63805625FDA61CD2F5B65DBF2537A605" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Insurance accruals</link:label>
    <link:label id="lab_us-gaap_SelfInsuranceReserveCurrent_63805625FDA61CD2F5B65DBF2537A605_label_en-US" xlink:label="lab_us-gaap_SelfInsuranceReserveCurrent_63805625FDA61CD2F5B65DBF2537A605" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Self Insurance Reserve, Current</link:label>
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    <link:label id="lab_us-gaap_AccruedIncomeTaxesCurrent_9F7D9C28BFA7AC9A5ABE5DBF25371E77_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesCurrent_9F7D9C28BFA7AC9A5ABE5DBF25371E77" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income Taxes payable</link:label>
    <link:label id="lab_us-gaap_AccruedIncomeTaxesCurrent_9F7D9C28BFA7AC9A5ABE5DBF25371E77_label_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesCurrent_9F7D9C28BFA7AC9A5ABE5DBF25371E77" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Income Taxes, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccruedIncomeTaxesCurrent" xlink:label="loc_us-gaap_AccruedIncomeTaxesCurrent_9F7D9C28BFA7AC9A5ABE5DBF25371E77" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccruedIncomeTaxesCurrent_9F7D9C28BFA7AC9A5ABE5DBF25371E77" xlink:to="lab_us-gaap_AccruedIncomeTaxesCurrent_9F7D9C28BFA7AC9A5ABE5DBF25371E77" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAccruedLiabilitiesCurrent_05761B7D8A197A88B2F85DBF25370B7B_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAccruedLiabilitiesCurrent_05761B7D8A197A88B2F85DBF25370B7B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other accruals</link:label>
    <link:label id="lab_us-gaap_OtherAccruedLiabilitiesCurrent_05761B7D8A197A88B2F85DBF25370B7B_label_en-US" xlink:label="lab_us-gaap_OtherAccruedLiabilitiesCurrent_05761B7D8A197A88B2F85DBF25370B7B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Accrued Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_05761B7D8A197A88B2F85DBF25370B7B" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LiabilitiesCurrent_4D668772CF1D009E7B195DBF253734AB_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_4D668772CF1D009E7B195DBF253734AB" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total current liabilities</link:label>
    <link:label id="lab_us-gaap_LiabilitiesCurrent_4D668772CF1D009E7B195DBF253734AB_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_4D668772CF1D009E7B195DBF253734AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_4D668772CF1D009E7B195DBF253734AB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrent_4D668772CF1D009E7B195DBF253734AB" xlink:to="lab_us-gaap_LiabilitiesCurrent_4D668772CF1D009E7B195DBF253734AB" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesNoncurrentAbstract_3159072151976BFA56925DBF2537BBCE_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesNoncurrentAbstract_3159072151976BFA56925DBF2537BBCE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">LONG-TERM LIABILITIES</link:label>
    <link:label id="lab_us-gaap_LiabilitiesNoncurrentAbstract_3159072151976BFA56925DBF2537BBCE_label_en-US" xlink:label="lab_us-gaap_LiabilitiesNoncurrentAbstract_3159072151976BFA56925DBF2537BBCE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, Noncurrent [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesNoncurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesNoncurrentAbstract_3159072151976BFA56925DBF2537BBCE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_3159072151976BFA56925DBF2537BBCE" xlink:to="lab_us-gaap_LiabilitiesNoncurrentAbstract_3159072151976BFA56925DBF2537BBCE" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccruedIncomeTaxesNoncurrent_033E3269B1BA769231615DBF2537C944_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesNoncurrent_033E3269B1BA769231615DBF2537C944" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income taxes payable</link:label>
    <link:label id="lab_us-gaap_AccruedIncomeTaxesNoncurrent_033E3269B1BA769231615DBF2537C944_label_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesNoncurrent_033E3269B1BA769231615DBF2537C944" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Income Taxes, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccruedIncomeTaxesNoncurrent" xlink:label="loc_us-gaap_AccruedIncomeTaxesNoncurrent_033E3269B1BA769231615DBF2537C944" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_0C07280238B94AB798805DBF2537722F_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_0C07280238B94AB798805DBF2537722F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred income taxes, net</link:label>
    <link:label id="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_0C07280238B94AB798805DBF2537722F_label_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_0C07280238B94AB798805DBF2537722F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Tax Liabilities, Net, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxLiabilitiesNoncurrent" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesNoncurrent_0C07280238B94AB798805DBF2537722F" xlink:type="locator" />
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    <link:label id="lab_us-gaap_SelfInsuranceReserveNoncurrent_C60D1A37305BA9B4E5E65DBF25374766_terseLabel_en-US" xlink:label="lab_us-gaap_SelfInsuranceReserveNoncurrent_C60D1A37305BA9B4E5E65DBF25374766" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Insurance accruals less current portion</link:label>
    <link:label id="lab_us-gaap_SelfInsuranceReserveNoncurrent_C60D1A37305BA9B4E5E65DBF25374766_label_en-US" xlink:label="lab_us-gaap_SelfInsuranceReserveNoncurrent_C60D1A37305BA9B4E5E65DBF25374766" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Self Insurance Reserve, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SelfInsuranceReserveNoncurrent" xlink:label="loc_us-gaap_SelfInsuranceReserveNoncurrent_C60D1A37305BA9B4E5E65DBF25374766" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OtherLiabilitiesNoncurrent_5B9BA1F0AD301C6DB95A5DBF2537E4FB_terseLabel_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_5B9BA1F0AD301C6DB95A5DBF2537E4FB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other long-term liabilities</link:label>
    <link:label id="lab_us-gaap_OtherLiabilitiesNoncurrent_5B9BA1F0AD301C6DB95A5DBF2537E4FB_label_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_5B9BA1F0AD301C6DB95A5DBF2537E4FB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Liabilities, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_5B9BA1F0AD301C6DB95A5DBF2537E4FB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_5B9BA1F0AD301C6DB95A5DBF2537E4FB" xlink:to="lab_us-gaap_OtherLiabilitiesNoncurrent_5B9BA1F0AD301C6DB95A5DBF2537E4FB" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesNoncurrent_66392FAAD74AF65A07375DBF2537064D_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesNoncurrent_66392FAAD74AF65A07375DBF2537064D" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total long-term liabilities</link:label>
    <link:label id="lab_us-gaap_LiabilitiesNoncurrent_66392FAAD74AF65A07375DBF2537064D_label_en-US" xlink:label="lab_us-gaap_LiabilitiesNoncurrent_66392FAAD74AF65A07375DBF2537064D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesNoncurrent" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_66392FAAD74AF65A07375DBF2537064D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_66392FAAD74AF65A07375DBF2537064D" xlink:to="lab_us-gaap_LiabilitiesNoncurrent_66392FAAD74AF65A07375DBF2537064D" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommitmentsAndContingencies_06BCD3C35A044B5303AA5DBF2538807C_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_06BCD3C35A044B5303AA5DBF2538807C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">COMMITMENTS AND CONTINGENCIES (Note 14)</link:label>
    <link:label id="lab_us-gaap_CommitmentsAndContingencies_06BCD3C35A044B5303AA5DBF2538807C_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_06BCD3C35A044B5303AA5DBF2538807C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingencies_06BCD3C35A044B5303AA5DBF2538807C" xlink:to="lab_us-gaap_CommitmentsAndContingencies_06BCD3C35A044B5303AA5DBF2538807C" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityAbstract_FFDEE523A572950E3AE35DBF25383213_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityAbstract_FFDEE523A572950E3AE35DBF25383213" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">STOCKHOLDERS' EQUITY</link:label>
    <link:label id="lab_us-gaap_StockholdersEquityAbstract_FFDEE523A572950E3AE35DBF25383213_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityAbstract_FFDEE523A572950E3AE35DBF25383213" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Attributable to Parent [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="loc_us-gaap_StockholdersEquityAbstract_FFDEE523A572950E3AE35DBF25383213" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PreferredStockValue_1F7F1BF7CA778E486A4D5DBF2538F37D_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockValue_1F7F1BF7CA778E486A4D5DBF2538F37D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, par value $.01; authorized 5,000 shares; none issued</link:label>
    <link:label id="lab_us-gaap_PreferredStockValue_1F7F1BF7CA778E486A4D5DBF2538F37D_label_en-US" xlink:label="lab_us-gaap_PreferredStockValue_1F7F1BF7CA778E486A4D5DBF2538F37D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Value, Issued</link:label>
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    <link:label id="lab_us-gaap_CommonStockValue_28D1474439FDC5016EF05DBF2538AFC2_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockValue_28D1474439FDC5016EF05DBF2538AFC2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capital stock, common, $.01 par value; authorized 395,000 shares; issued 90,689 in 2017 and 2016; outstanding 83,297 in 2017 and 83,287 in 2016, respectively</link:label>
    <link:label id="lab_us-gaap_CommonStockValue_28D1474439FDC5016EF05DBF2538AFC2_label_en-US" xlink:label="lab_us-gaap_CommonStockValue_28D1474439FDC5016EF05DBF2538AFC2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Value, Issued</link:label>
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    <link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_FC58506F80EA3CF1AC6E5DBF253844E1_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_FC58506F80EA3CF1AC6E5DBF253844E1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additional paid-in capital</link:label>
    <link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_FC58506F80EA3CF1AC6E5DBF253844E1_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_FC58506F80EA3CF1AC6E5DBF253844E1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additional Paid in Capital, Common Stock</link:label>
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    <link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_72B33612BD76A59287155DBF2538B878_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_72B33612BD76A59287155DBF2538B878" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retained Earnings (Accumulated Deficit)</link:label>
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    <link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_F1C6909988142B920866C2C76718828F_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_F1C6909988142B920866C2C76718828F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Cash Flows [Abstract]</link:label>
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_BA3F578D63731270BD03C2C767188E23_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_BA3F578D63731270BD03C2C767188E23" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">OPERATING ACTIVITIES</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_BA3F578D63731270BD03C2C767188E23_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_BA3F578D63731270BD03C2C767188E23" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_BA3F578D63731270BD03C2C767188E23" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_B9DEA2269F562B9D6407C2C76718BBEB_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_B9DEA2269F562B9D6407C2C76718BBEB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustments to reconcile net income to net cash provided by operating activities:</link:label>
    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_B9DEA2269F562B9D6407C2C76718BBEB_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_B9DEA2269F562B9D6407C2C76718BBEB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
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    <link:label id="lab_us-gaap_DepreciationDepletionAndAmortization_8BB919656A08AC5FFEA5C2C767182BC2_terseLabel_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortization_8BB919656A08AC5FFEA5C2C767182BC2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation and amortization</link:label>
    <link:label id="lab_us-gaap_DepreciationDepletionAndAmortization_8BB919656A08AC5FFEA5C2C767182BC2_label_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortization_8BB919656A08AC5FFEA5C2C767182BC2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation, Depletion and Amortization</link:label>
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    <link:label id="lab_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_B2C38830A3F5C07560ABC2C76719A829_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_B2C38830A3F5C07560ABC2C76719A829" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Deferred income taxes</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_B2C38830A3F5C07560ABC2C76719A829_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_B2C38830A3F5C07560ABC2C76719A829" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Deferred Income Taxes</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInDeferredIncomeTaxes" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_B2C38830A3F5C07560ABC2C76719A829" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AllocatedShareBasedCompensationExpense_E4B5645DA3514E126273C2C76719D05E_terseLabel_en-US" xlink:label="lab_us-gaap_AllocatedShareBasedCompensationExpense_E4B5645DA3514E126273C2C76719D05E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock-based compensation</link:label>
    <link:label id="lab_us-gaap_AllocatedShareBasedCompensationExpense_E4B5645DA3514E126273C2C76719D05E_label_en-US" xlink:label="lab_us-gaap_AllocatedShareBasedCompensationExpense_E4B5645DA3514E126273C2C76719D05E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Allocated Share-based Compensation Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_E4B5645DA3514E126273C2C76719D05E" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_C316E4EB6057C28C6DDAC2C767198C26_terseLabel_en-US" xlink:label="lab_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_C316E4EB6057C28C6DDAC2C767198C26" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of stock-based compensation, net of tax</link:label>
    <link:label id="lab_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_C316E4EB6057C28C6DDAC2C767198C26_label_en-US" xlink:label="lab_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_C316E4EB6057C28C6DDAC2C767198C26" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Allocated Share-based Compensation Expense, Net of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_C316E4EB6057C28C6DDAC2C767198C26" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_E2DFDFEBDD7FEC7F12B2C2C76719B645_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_E2DFDFEBDD7FEC7F12B2C2C76719B645" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in certain working capital items:</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_E2DFDFEBDD7FEC7F12B2C2C76719B645_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_E2DFDFEBDD7FEC7F12B2C2C76719B645" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Operating Capital [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_E2DFDFEBDD7FEC7F12B2C2C76719B645" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_E2DFDFEBDD7FEC7F12B2C2C76719B645" xlink:to="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_E2DFDFEBDD7FEC7F12B2C2C76719B645" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInReceivables_FD4D40613D631EDAA4AAC2C76719BDB1_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInReceivables_FD4D40613D631EDAA4AAC2C76719BDB1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Trade receivables</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInReceivables_FD4D40613D631EDAA4AAC2C76719BDB1_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInReceivables_FD4D40613D631EDAA4AAC2C76719BDB1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Receivables</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInReceivables" xlink:label="loc_us-gaap_IncreaseDecreaseInReceivables_FD4D40613D631EDAA4AAC2C76719BDB1" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_6BB00627532AB28D08CFC2C76719D177_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_6BB00627532AB28D08CFC2C76719D177" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Prepaid expenses and other current assets</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_6BB00627532AB28D08CFC2C76719D177_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_6BB00627532AB28D08CFC2C76719D177" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Prepaid Expense and Other Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_6BB00627532AB28D08CFC2C76719D177" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_1A7FB3ABA631D06A156EC2C76719D841_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_1A7FB3ABA631D06A156EC2C76719D841" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable, accrued liabilities, and accrued expenses</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_1A7FB3ABA631D06A156EC2C76719D841_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_1A7FB3ABA631D06A156EC2C76719D841" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Accounts Payable and Accrued Liabilities</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_1A7FB3ABA631D06A156EC2C76719D841" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_1A7FB3ABA631D06A156EC2C76719D841" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_9555D5636A20D79CB554C2C76719E881_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_9555D5636A20D79CB554C2C76719E881" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued income taxes</link:label>
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_9EC07F51B65409E40449C2C767196B8E_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_9EC07F51B65409E40449C2C767196B8E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by operating activities</link:label>
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    <link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_DD5F04FA132B3FD2C131C2C76719F814_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_DD5F04FA132B3FD2C131C2C76719F814" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from sale of property and equipment</link:label>
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    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_06DDC3F06A9C23BAEC7AC2C767198A27_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_06DDC3F06A9C23BAEC7AC2C767198A27" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Purchases of property and equipment, net of trades</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_06DDC3F06A9C23BAEC7AC2C767198A27_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_06DDC3F06A9C23BAEC7AC2C767198A27" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Property, Plant, and Equipment</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_06DDC3F06A9C23BAEC7AC2C767198A27" xlink:to="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_06DDC3F06A9C23BAEC7AC2C767198A27" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsForProceedsFromDelayedTaxExemptExchange_71D16A9964B2AF16763EC2C767194039_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromDelayedTaxExemptExchange_71D16A9964B2AF16763EC2C767194039" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Change in designated funds for equipment purchases</link:label>
    <link:label id="lab_us-gaap_PaymentsForProceedsFromDelayedTaxExemptExchange_71D16A9964B2AF16763EC2C767194039_label_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromDelayedTaxExemptExchange_71D16A9964B2AF16763EC2C767194039" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for (Proceeds from) Delayed Tax Exempt Exchange</link:label>
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    <link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_EAE278D39D342A78A707C2C7671A6474_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_EAE278D39D342A78A707C2C7671A6474" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Change in other assets</link:label>
    <link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_EAE278D39D342A78A707C2C7671A6474_label_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_EAE278D39D342A78A707C2C7671A6474" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for (Proceeds from) Other Investing Activities</link:label>
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_928E2399BD4E6AF13C65C2C7671A22C4_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_928E2399BD4E6AF13C65C2C7671A22C4" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash used in investing activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_928E2399BD4E6AF13C65C2C7671A22C4_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_928E2399BD4E6AF13C65C2C7671A22C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_928E2399BD4E6AF13C65C2C7671A22C4" xlink:type="locator" />
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3D09588B21F77BE1C49CC2C7671A484E_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3D09588B21F77BE1C49CC2C7671A484E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">FINANCING ACTIVITIES</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3D09588B21F77BE1C49CC2C7671A484E_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3D09588B21F77BE1C49CC2C7671A484E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3D09588B21F77BE1C49CC2C7671A484E" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_1BB6D66F5C57D3B49788C2C7671A0612_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_1BB6D66F5C57D3B49788C2C7671A0612" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Payments of cash dividends</link:label>
    <link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_1BB6D66F5C57D3B49788C2C7671A0612_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_1BB6D66F5C57D3B49788C2C7671A0612" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments of Ordinary Dividends, Common Stock</link:label>
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    <link:label id="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_D0BA663C165D7FA7E214C2C7671A8CCB_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_D0BA663C165D7FA7E214C2C7671A8CCB" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Shares withheld for employee taxes related to stock-based compensation</link:label>
    <link:label id="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_D0BA663C165D7FA7E214C2C7671A8CCB_label_en-US" xlink:label="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_D0BA663C165D7FA7E214C2C7671A8CCB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments Related to Tax Withholding for Share-based Compensation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_D0BA663C165D7FA7E214C2C7671A8CCB" xlink:type="locator" />
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    <link:label id="lab_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_CEC0102797151634176FC2C7671AD737_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_CEC0102797151634176FC2C7671AD737" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Shares Paid for Tax Withholding for Share Based Compensation</link:label>
    <link:label id="lab_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_CEC0102797151634176FC2C7671AD737_label_en-US" xlink:label="lab_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_CEC0102797151634176FC2C7671AD737" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Shares Paid for Tax Withholding for Share Based Compensation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation" xlink:label="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_CEC0102797151634176FC2C7671AD737" xlink:type="locator" />
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    <link:label id="lab_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_1C66D36421436FB04784C2C7671AB0DA_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_1C66D36421436FB04784C2C7671AB0DA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contingent consideration related to acquisition</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_1C66D36421436FB04784C2C7671AB0DA_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_1C66D36421436FB04784C2C7671AB0DA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_1C66D36421436FB04784C2C7671AB0DA" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_B8249ADF797C7D6E10B6C2C7671A8F88_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt_B8249ADF797C7D6E10B6C2C7671A8F88" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Repayments on line of credit</link:label>
    <link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_B8249ADF797C7D6E10B6C2C7671A8F88_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt_B8249ADF797C7D6E10B6C2C7671A8F88" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayments of Long-term Debt</link:label>
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    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_0AD03B087FABEBBC23A9C2C7671A7AE6_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_0AD03B087FABEBBC23A9C2C7671A7AE6" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Repurchases of common stock</link:label>
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_9C9DEA0ECB96B667C701C2C7671A3A2C_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_9C9DEA0ECB96B667C701C2C7671A3A2C" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash used in financing activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_9C9DEA0ECB96B667C701C2C7671A3A2C_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_9C9DEA0ECB96B667C701C2C7671A3A2C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities</link:label>
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