$HTLD
HEARTLAND EXPRESS INC Stock $htld

$htld Overview Financials Valuation SEC Filings Company Website

2021 Form 10-K Financial Statement

#000079923322000006 Filed on February 25, 2022

Income Statement

Concept	2021	2020 Q4	2020
Revenue	$607.3M	$155.8M	$645.3M
YoY Change	-5.89%	-6.84%	8.12%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin	$415.9M	$102.8M	$431.7M
YoY Change	-3.65%	-14.83%	5.06%
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$104.2M	$28.60M	$110.4M
YoY Change	-5.57%	-4.35%	9.36%
% of Gross Profit
Operating Expenses	$539.3M	$138.1M	$566.6M
YoY Change	-4.82%	-12.04%	6.14%
Operating Profit	$105.4M	$23.77M	$93.42M
YoY Change	12.83%	34.55%	-0.91%
Interest Expense	$640.0K	$100.0K	$800.0K
YoY Change	-20.0%	-200.0%	-72.41%
% of Operating Profit	0.61%	0.42%	0.86%
Other Income/Expense, Net
YoY Change
Pretax Income	$106.0M	$23.90M	$94.26M
YoY Change	12.5%	36.46%	-3.0%
Income Tax	$26.77M	$6.200M	$23.46M
% Of Pretax Income	25.24%	25.94%	24.88%
Net Earnings	$79.28M	$17.67M	$70.81M
YoY Change	11.96%	38.2%	-2.96%
Net Earnings / Revenue	13.05%	11.34%	10.97%
Basic Earnings Per Share	$1.00		$0.87
Diluted Earnings Per Share	$1.00	$218.5K	$0.87
COMMON SHARES
Basic Shares Outstanding	79.57M shares	80.80M shares	81.39M shares
Diluted Shares Outstanding	79.61M shares		81.44M shares

Balance Sheet

Concept	2021	2020 Q4	2020
SHORT-TERM ASSETS
Cash & Short-Term Investments	$157.7M	$113.9M	$113.9M
YoY Change	38.49%	48.5%	48.5%
Cash & Equivalents	$157.7M	$113.9M	$113.9M
Short-Term Investments
Other Short-Term Assets	$18.57M	$15.34M	$23.50M
YoY Change	-20.96%	71.48%	30.56%
Inventory
Prepaid Expenses
Receivables	$52.81M	$55.58M	$55.60M
Other Receivables	$4.095M	$0.00	$0.00
Total Short-Term Assets	$233.2M	$193.0M	$193.0M
YoY Change	20.84%	27.14%	27.14%
LONG-TERM ASSETS
Property, Plant & Equipment	$487.9M	$539.3M	$539.3M
YoY Change	-9.53%	2.47%	2.47%
Goodwill		$168.3M
YoY Change		0.0%
Intangibles		$24.75M
YoY Change		-8.81%
Long-Term Investments
YoY Change
Other Assets	$16.75M	$17.68M	$25.80M
YoY Change	-35.06%	-8.84%	1.57%
Total Long-Term Assets	$695.3M	$758.2M	$758.2M
YoY Change	-8.29%	1.48%	1.49%
TOTAL ASSETS
Total Short-Term Assets	$233.2M	$193.0M	$193.0M
Total Long-Term Assets	$695.3M	$758.2M	$758.2M
Total Assets	$928.5M	$951.2M	$951.2M
YoY Change	-2.38%	5.81%	5.82%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$20.54M	$12.80M	$12.80M
YoY Change	60.45%	15.32%	15.32%
Accrued Expenses	$51.06M	$56.80M	$56.80M
YoY Change	-10.11%	8.6%	8.6%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$71.59M	$71.04M	$71.00M
YoY Change	0.84%	12.04%	11.99%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$39.88M	$51.80M	$51.80M
YoY Change	-23.02%	-9.44%	-9.44%
Total Long-Term Liabilities	$39.88M	$155.8M	$51.80M
YoY Change	-23.02%	3.27%	-9.44%
TOTAL LIABILITIES
Total Short-Term Liabilities	$71.59M	$71.04M	$71.00M
Total Long-Term Liabilities	$39.88M	$155.8M	$51.80M
Total Liabilities	$201.4M	$226.8M	$226.8M
YoY Change	-11.18%	5.87%	5.83%
SHAREHOLDERS EQUITY
Retained Earnings		$891.0M
YoY Change		7.78%
Common Stock		$5.237M
YoY Change		3.74%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$171.9M
YoY Change		16.88%
Treasury Stock Shares		10.04M shares
Shareholders Equity	$727.1M	$724.3M	$724.3M
YoY Change
Total Liabilities & Shareholders Equity	$928.5M	$951.2M	$951.2M
YoY Change	-2.38%	5.81%	5.82%

Cashflow Statement

Concept	2021	2020 Q4	2020
OPERATING ACTIVITIES
Net Income	$79.28M	$17.67M	$70.81M
YoY Change	11.96%	38.2%	-2.96%
Depreciation, Depletion And Amortization	$104.2M	$28.60M	$110.4M
YoY Change	-5.57%	-4.35%	9.36%
Cash From Operating Activities	$123.4M	$45.90M	$178.9M
YoY Change	-30.99%	24.05%	22.19%
INVESTING ACTIVITIES
Capital Expenditures	$132.6M	-$40.50M	$204.3M
YoY Change	-35.09%	-6.47%	24.76%
Acquisitions	$0.00		$0.00
YoY Change			-100.0%
Other Investing Activities	$191.0K	$41.80M	-$129.0K
YoY Change	-248.06%	55.97%	-596.15%
Cash From Investing Activities	-$2.647M	$1.300M	-$111.0M
YoY Change	-97.62%	-107.88%	-16.37%
FINANCING ACTIVITIES
Cash Dividend Paid	$45.90M		$6.500M
YoY Change	606.15%		-1.52%
Common Stock Issuance & Retirement, Net	$32.03M		$25.65M
YoY Change	24.83%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$78.14M	-15.10M	-$32.74M
YoY Change	138.7%	-72.64%	-67.41%
NET CHANGE
Cash From Operating Activities	$123.4M	45.90M	$178.9M
Cash From Investing Activities	-$2.647M	1.300M	-$111.0M
Cash From Financing Activities	-$78.14M	-15.10M	-$32.74M
Net Change In Cash	$42.63M	32.10M	$35.06M
YoY Change	21.57%	-192.51%	-140.37%
FREE CASH FLOW
Cash From Operating Activities	$123.4M	$45.90M	$178.9M
Capital Expenditures	$132.6M	-$40.50M	$204.3M
Free Cash Flow	-$9.222M	$86.40M	-$25.49M
YoY Change	-63.82%	7.6%	46.41%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0000799233
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2022Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	78929592	shares
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2021Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	395000000	shares
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	395000000	shares
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	90689000	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	90689000	shares
CY2021Q4	us-gaap	Cash Fdic Insured Amount CashFDICInsuredAmount	300000	USD
CY2021Q4	us-gaap	Deposit Contracts Liabilities DepositContractsLiabilities	0	USD
CY2019	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	78923000	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	80653000	shares
CY2021Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	11766000	shares
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	10036000	shares
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.58
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.08
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CY2021	htld	Valuation Allowance Against Any Deferred Tax Asset ValuationAllowanceAgainstAnyDeferredTaxAsset	0	USD
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CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	52150	shares
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CY2020Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2019Q4	htld	Excess Insurance Coverage Limit ExcessInsuranceCoverageLimit	100000000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	Rate
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	Rate
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	Rate
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	14000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	59700	shares
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Entity File Number EntityFileNumber	0-15087
CY2021	dei	Entity Registrant Name EntityRegistrantName	HEARTLAND EXPRESS, INC.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	NV
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	93-0926999
CY2021Q2	dei	Entity Public Float EntityPublicFloat	800000000	USD
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	901 Heartland Way
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	North Liberty
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	IA
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	52317
CY2021	dei	City Area Code CityAreaCode	319
CY2021	dei	Local Phone Number LocalPhoneNumber	626-3600
CY2021	dei	Security12g Title Security12gTitle	Common Stock, $0.01 par value
CY2021	dei	Trading Symbol TradingSymbol	HTLD
CY2021	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2021	dei	Auditor Firm AuditorFirmId	248
CY2021	dei	Auditor Name AuditorName	GRANT THORNTON LLP
CY2021	dei	Auditor Location AuditorLocation	Tulsa, Oklahoma
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CY2021	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	21400000	USD
CY2020	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	26398000	USD
CY2019	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	22781000	USD
CY2021	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	37438000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	14830000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	31341000	USD
CY2021	us-gaap	Costs And Expenses CostsAndExpenses	501877000	USD
CY2020	us-gaap	Costs And Expenses CostsAndExpenses	551843000	USD
CY2020	us-gaap	Costs And Expenses CostsAndExpenses	551843000	USD
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	502540000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	105407000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	93419000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	94275000	USD
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	640000	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	842000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	3955000	USD
CY2021	us-gaap	Interest Expense Debt InterestExpenseDebt	0	USD
CY2020	us-gaap	Interest Expense Debt InterestExpenseDebt	0	USD
CY2019	us-gaap	Interest Expense Debt InterestExpenseDebt	1052000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	106047000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	94261000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	97178000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	26770000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23455000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24211000	USD
CY2021	htld	Net Income NetIncome	79277000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.89
CY2020	htld	Net Income NetIncome	70806000	USD
CY2019	htld	Net Income NetIncome	72967000	USD
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	79277000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	70806000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	72967000	USD
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.00
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.87
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.00
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.87
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.87
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.89
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	79573000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	81388000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	81980000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	79612000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	81444000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	82024000	shares
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.58
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.08
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.08
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	615972000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	72967000	USD
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	6563000	USD
CY2019	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	750000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1533000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	684659000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	70806000	USD
CY2020	us-gaap	Dividends Common Stock DividendsCommonStock	6502000	USD
CY2020	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	26139000	USD
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1510000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	724334000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	79277000	USD
CY2021	us-gaap	Dividends Common Stock DividendsCommonStock	45872000	USD
CY2021	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	31540000	USD
CY2021	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	903000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	727102000	USD
CY2021	htld	Net Income NetIncome	79277000	USD
CY2020	htld	Net Income NetIncome	70806000	USD
CY2019	htld	Net Income NetIncome	72967000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	104232000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	110381000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	100932000	USD
CY2021	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	5869000	USD
CY2020	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-8148000	USD
CY2019	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-4699000	USD
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1150000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2092000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2065000	USD
CY2021	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	37438000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	14830000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	31341000	USD
CY2021	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-2765000	USD
CY2020	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-1176000	USD
CY2019	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-6676000	USD
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-3657000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	3628000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-509000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-18476000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	3062000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-10758000	USD
CY2021	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-5880000	USD
CY2020	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	1643000	USD
CY2019	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	623000	USD
CY2019	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	623000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	123418000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	178850000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	146372000	USD
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	130184000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	93160000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	92942000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	132640000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	204337000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	163780000	USD
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	61927000	USD
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	191000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-129000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	26000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2647000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-111048000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-132791000	USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	45872000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	6502000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	6563000	USD
CY2021	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	247000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	582000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	532000	USD
CY2021	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2020	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	93348000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	32025000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	25654000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-78144000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-32738000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-100443000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	42627000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	35064000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-86862000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	131140000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	96076000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	182938000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	173767000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	131140000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	96076000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	0	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	0	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	929000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	38519000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	13664000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	18888000	USD
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	9019000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	2172000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1476000	USD
CY2021	htld	Soldrevenueequipmentinothercurrentassets Soldrevenueequipmentinothercurrentassets	1512000	USD
CY2020	htld	Soldrevenueequipmentinothercurrentassets Soldrevenueequipmentinothercurrentassets	3383000	USD
CY2019	htld	Soldrevenueequipmentinothercurrentassets Soldrevenueequipmentinothercurrentassets	1282000	USD
CY2021	htld	Treasury Stock Acquired In Accounts Payable TreasuryStockAcquiredInAccountsPayable	0	USD
CY2020	htld	Treasury Stock Acquired In Accounts Payable TreasuryStockAcquiredInAccountsPayable	485000	USD
CY2019	htld	Treasury Stock Acquired In Accounts Payable TreasuryStockAcquiredInAccountsPayable	0	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	157742000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	113852000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	76684000	USD
CY2021Q4	us-gaap	Restricted Cash And Investments Current RestrictedCashAndInvestmentsCurrent	928000	USD
CY2020Q4	us-gaap	Restricted Cash And Investments Current RestrictedCashAndInvestmentsCurrent	1075000	USD
CY2019Q4	us-gaap	Restricted Cash And Investments Current RestrictedCashAndInvestmentsCurrent	1594000	USD
CY2021Q4	us-gaap	Restricted Cash And Investments Noncurrent RestrictedCashAndInvestmentsNoncurrent	15097000	USD
CY2020Q4	us-gaap	Restricted Cash And Investments Noncurrent RestrictedCashAndInvestmentsNoncurrent	16213000	USD
CY2019Q4	us-gaap	Restricted Cash And Investments Noncurrent RestrictedCashAndInvestmentsNoncurrent	17798000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	173767000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	131140000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	96076000	USD
CY2021	us-gaap	Nature Of Operations NatureOfOperations	<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Nature of Business</span></div><div><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">Heartland Express, Inc. is a holding company incorporated in Nevada, which directly or indirectly owns all of the stock of Heartland Express, Inc. of Iowa, Heartland Express Services, Inc., Heartland Express Maintenance Services, Inc., Midwest Holding Group, LLC and Millis Transfer, LLC. On August 26, 2019, Heartland Express, Inc. of Iowa acquired Midwest Holding Group, Inc. and Millis Real Estate Leasing, LLC (together, "Millis Transfer"), a truckload carrier headquartered in Black River Falls, Wisconsin. Effective December 31, 2019, Millis Transfer, Inc. and Midwest Holding Group, Inc. were converted to Millis Transfer, LLC and Midwest Holding Group, LLC, respectively. Further, effective December 31, 2019, Millis Real Estate Leasing, LLC, Rivera Real Estate, LLC, and Great River Leasing, LLC were merged into Millis Transfer, LLC. We, together with our subsidiaries, are a short-to-medium haul truckload carrier (predominately 500 miles or less per load). We primarily provide nationwide asset-based dry van truckload service for major shippers from Washington to Florida and New England to California.</span></div>
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of Estimates</span></div><div><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</span></div>
CY2021	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segments
CY2021Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	37500000	USD
CY2022Q1	us-gaap	Cash Uninsured Amount CashUninsuredAmount	12400000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	16000000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	17300000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	900000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	15100000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	1100000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	16200000	USD
CY2020Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	1500000	USD
CY2021Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	1500000	USD
CY2021Q4	htld	Customer Credit Terms Days CustomerCreditTermsDays	30	D
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1100000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1100000	USD
CY2021	htld	Amortization Period Of Tires AmortizationPeriodOfTires	two years
CY2021	us-gaap	Property Plant And Equipment Impairment PropertyPlantAndEquipmentImpairment	<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Impairment of Long-Lived Assets</span></div><div><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">We periodically evaluate property and equipment and amortizable intangible assets for impairment upon the occurrence of events or changes in circumstances that indicate the carrying amount of assets may not be recoverable. Recoverability of assets to be held and used is evaluated by a comparison of the carrying amount of an asset group to future net undiscounted cash flows expected to be generated by the group. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount over which the carrying amount of the assets exceeds the fair value of the assets. There were no impairment charges recognized during the years ended December 31, 2021, 2020, and 2019.</span></div>
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2021	us-gaap	Advertising Expense AdvertisingExpense	2200000	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	1800000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	1900000	USD
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2021	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2021Q4	htld	Health Insurance Reserves HealthInsuranceReserves	3200000	USD
CY2020Q4	htld	Health Insurance Reserves HealthInsuranceReserves	4500000	USD
CY2021Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	1300000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	1100000	USD
CY2021	htld	Net Income Loss Eps Details NetIncomeLossEPSDetails	79277000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	79573000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.00
CY2021	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	39000	shares
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	79277000	USD
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	79612000	shares
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.00
CY2020	htld	Net Income Loss Eps Details NetIncomeLossEPSDetails	70806000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	81388000	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.87
CY2019	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	44000	shares
CY2020	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	56000	shares
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	70806000	USD
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	81444000	shares
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.87
CY2019	htld	Net Income Loss Eps Details NetIncomeLossEPSDetails	72967000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	81980000	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.89
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	72967000	USD
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	82024000	shares
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.89
CY2021	htld	Portionoftaxbenefitrecordedpositionsmorelikelythannottobesustained Portionoftaxbenefitrecordedpositionsmorelikelythannottobesustained	0.50
CY2021	htld	Concentration Of Risk Number Of Customers ConcentrationOfRiskNumberOfCustomers	5	Customer
CY2021	htld	Concentration Risk Percentage ConcentrationRiskPercentage	0.36
CY2020	htld	Concentration Risk Percentage ConcentrationRiskPercentage	0.34
CY2019	htld	Concentration Risk Percentage ConcentrationRiskPercentage	0.36
CY2021	htld	Concentration Of Risk Number Of Customers ConcentrationOfRiskNumberOfCustomers	5	Customer
CY2020	htld	Revenues Details RevenuesDetails	645300000	USD
CY2019	htld	Revenues Details RevenuesDetails	596800000	USD
CY2021	htld	Fuel Surcharge Revenue FuelSurchargeRevenue	76100000	USD
CY2020	htld	Fuel Surcharge Revenue FuelSurchargeRevenue	61700000	USD
CY2021Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	1300000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	1100000	USD
CY2021	htld	Revenues Details RevenuesDetails	607300000	USD
CY2019	htld	Fuel Surcharge Revenue FuelSurchargeRevenue	75000000	USD
CY2021	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	11400000	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	14300000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	13500000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	500000	USD
CY2019Q3	htld	Business Combination Total Consideration BusinessCombinationTotalConsideration	156000000	USD
CY2019Q3	htld	Business Combination Cash And Equity Transferred BusinessCombinationCashAndEquityTransferred	62700000	USD
CY2019Q3	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	93300000	USD
CY2019Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	0	USD
CY2019	htld	Business Combination Pro Forma Adjustments Net Income BusinessCombinationProFormaAdjustmentsNetIncome	3000000	USD
CY2019	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	694672000	USD
CY2019	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	75951000	USD
CY2019	htld	Acquired Business Percent Of Revenue AcquiredBusinessPercentOfRevenue	0.088
CY2021	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	0	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2400000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2400000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2700000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	41200000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	18845000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	22355000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	41200000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	16454000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	24746000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Rolling Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextRollingTwelveMonths	2300000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	2200000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	1900000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1900000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1900000	USD
CY2021Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	25000000	USD
CY2018Q3	htld	Allowable Amount For Issuance Of Letters Of Credit AllowableAmountForIssuanceOfLettersOfCredit	30000000	USD
CY2021Q4	htld	Allowable Amount For Issuance Of Letters Of Credit AllowableAmountForIssuanceOfLettersOfCredit	20000000	USD
CY2021	htld	Debt Instrument Covenant Leverage Ratio DebtInstrumentCovenantLeverageRatio	2
CY2021	htld	Debt Covenant Minimum Net Income Requirement DebtCovenantMinimumNetIncomeRequirement	1	USD
CY2021	htld	Debt Covenant Minimum Tangible Net Worth DebtCovenantMinimumTangibleNetWorth	250000000	USD
CY2021Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2021Q4	htld	Lettersofcreditoutstandingonalineofcredit Lettersofcreditoutstandingonalineofcredit	8500000	USD
CY2020Q4	htld	Lettersofcreditoutstandingonalineofcredit Lettersofcreditoutstandingonalineofcredit	11500000	USD
CY2021Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	16500000	USD
CY2020Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	88500000	USD
CY2021Q4	htld	Aggregate Self Insurance Corridor AggregateSelfInsuranceCorridor	1000000	USD
CY2021Q4	htld	Aggregate Self Insurance Corridor Claims Minimum AggregateSelfInsuranceCorridorClaimsMinimum	2000000	USD
CY2021Q4	htld	Aggregate Self Insurance Corridor Claims Maximum AggregateSelfInsuranceCorridorClaimsMaximum	3000000	USD
CY2021Q4	htld	Excess Insurance Coverage Limit ExcessInsuranceCoverageLimit	60000000	USD
CY2021Q4	htld	Auto Liability50 Exposure Minimum AutoLiability50ExposureMinimum	5000000	USD
CY2021Q4	htld	Auto Liability50 Exposure Maximum AutoLiability50ExposureMaximum	10000000	USD
CY2021Q4	htld	Excess Insurance Coverage Limit ExcessInsuranceCoverageLimit	60000000	USD
CY2021Q4	htld	Excess Insurance Coverage Limit ExcessInsuranceCoverageLimit	60000000	USD
CY2019Q4	htld	Excess Insurance Coverage Minimum Claims ExcessInsuranceCoverageMinimumClaims	3000000	USD
CY2019Q4	htld	Excess Insurance Coverage Maximum Claims ExcessInsuranceCoverageMaximumClaims	10000000	USD
CY2021Q4	htld	Excess Insurance Coverage Limit ExcessInsuranceCoverageLimit	60000000	USD
CY2021Q4	htld	Excess Insurance Coverage Limit ExcessInsuranceCoverageLimit	60000000	USD
CY2021Q4	htld	Trust Fund Requirements TrustFundRequirements	700000	USD
CY2020Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	1500000	USD
CY2021Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	1500000	USD
CY2021Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	10000000	USD
CY2021Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	261000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	258000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	5452000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	6353000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	36000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	126000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Self Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance	11455000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Self Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance	14283000	USD
CY2021Q4	htld	Deferred Tax Assets Operating Loss Carryforwards State DeferredTaxAssetsOperatingLossCarryforwardsState	46000	USD
CY2020Q4	htld	Deferred Tax Assets Operating Loss Carryforwards State DeferredTaxAssetsOperatingLossCarryforwardsState	0	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense DeferredTaxAssetsTaxDeferredExpense	981000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense DeferredTaxAssetsTaxDeferredExpense	1037000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	227000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	221000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	18458000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	22278000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	18458000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	22278000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	87004000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	98355000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	20538000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	18959000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	887000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	804000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	108429000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	118118000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	95840000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	89971000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	95840000	USD
CY2021Q4	us-gaap	Deferred Income Taxes And Other Assets Noncurrent DeferredIncomeTaxesAndOtherAssetsNoncurrent	0	USD
CY2020Q4	us-gaap	Deferred Income Taxes And Other Assets Noncurrent DeferredIncomeTaxesAndOtherAssetsNoncurrent	8164000	USD
CY2021Q4	us-gaap	Deferred Tax And Other Liabilities Noncurrent DeferredTaxAndOtherLiabilitiesNoncurrent	89971000	USD
CY2020Q4	us-gaap	Deferred Tax And Other Liabilities Noncurrent DeferredTaxAndOtherLiabilitiesNoncurrent	104004000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	89971000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	25571000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	10835000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	14122000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	7068000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4472000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5698000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	32639000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	15307000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	19820000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-4392000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	736000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	5595000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1477000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	7412000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1204000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-5869000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	8148000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	4391000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	26770000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23455000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24211000	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	22270000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	19795000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	20406000	USD
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	4452000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	5678000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3561000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	227000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	-446000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	-540000	USD
CY2021	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	302000	USD
CY2020	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-2615000	USD
CY2019	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-392000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-266000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-73000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	289000	USD
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	239000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	224000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-193000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	26770000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23455000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24211000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4700000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4900000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	3700000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	3900000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	-200000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	-100000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	800000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	900000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	100000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4937000	USD
CY2021Q3	htld	Stock Repurchase Program Number Of Additional Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfAdditionalSharesAuthorizedToBeRepurchased	3000000	shares
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	5010000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	446000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	767000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	179000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	216000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	533000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	428000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	196000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4671000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4937000	USD
CY2021Q4	us-gaap	Decrease In Unrecognized Tax Benefits Is Reasonably Possible DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	0	USD
CY2021Q4	us-gaap	Increase In Unrecognized Tax Benefits Is Reasonably Possible IncreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	1000000	USD
CY2021Q4	htld	Stock Repurchase Shares StockRepurchaseShares	6600000	shares
CY2021	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1800000	shares
CY2020	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1500000	shares
CY2019	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	0	shares
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	45900000	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	6500000	USD
CY2020	htld	Regular Dividend RegularDividend	6500000	USD
CY2019	htld	Regular Dividend RegularDividend	6600000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	6600000	USD
CY2021	htld	Special Dividend SpecialDividend	39500000	USD
CY2021	htld	Regular Dividend RegularDividend	6400000	USD
CY2011Q3	htld	Restricted Stock Shares Authorized RestrictedStockSharesAuthorized	900000	shares
CY2021	htld	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant1 ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant1	100000	shares
CY2021Q4	htld	Restricted Stock Shares Authorized RestrictedStockSharesAuthorized	600000	shares
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares	2000	shares
CY2021	htld	Vesting Share Price Range Minimum VestingSharePriceRangeMinimum	16.58	USD
CY2021	htld	Vesting Share Price Range Maximum VestingSharePriceRangeMaximum	22.1	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	1100000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	2100000	USD
CY2021	htld	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized1	100000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	2100000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y1M6D
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	1500000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	2300000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	1800000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	20.29
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	32100	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	17.92
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	77800	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	19.42
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	0	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	0
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	19.70
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	52100	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	20.55
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	119900	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	20.24
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	111800	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	20.38
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	500	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	19.32
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	20.29
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	26500	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	21.31
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	114000.0	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	19.88
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	87900	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	19.93
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	500	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	17.11
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	20.55
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2200000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2300000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1600000	USD
CY2021Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance Sheet Amount UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount	25800000	USD
CY2020Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	1100000	USD
CY2021	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	0	USD
CY2021	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	0	USD
CY2021	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	0	USD
CY2021Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	1100000	USD
CY2019Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	1100000	USD
CY2020	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	0	USD
CY2020	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	0	USD
CY2020	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	0	USD
CY2020Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	1100000	USD
CY2018Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	900000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	200000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	0	USD
CY2019	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	0	USD
CY2019Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	1100000	USD

Files In Submission

Name	View Source	Status
0000799233-22-000006-index-headers.html	Edgar Link	pending
0000799233-22-000006-index.html	Edgar Link	pending
0000799233-22-000006.txt	Edgar Link	pending
0000799233-22-000006-xbrl.zip	Edgar Link	pending
exhibit212021q4.htm	Edgar Link	pending
exhibit231consentofindepen.htm	Edgar Link	pending
exhibit3112021q4.htm	Edgar Link	pending
exhibit3122021q4.htm	Edgar Link	pending
exhibit3212021q4.htm	Edgar Link	pending
exhibit3222021q4.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
htld-20211231.htm	Edgar Link	pending
htld-20211231.xsd	Edgar Link	pending
htld-20211231_cal.xml	Edgar Link	unprocessable
htld-20211231_def.xml	Edgar Link	unprocessable
htld-20211231_htm.xml	Edgar Link	completed
htld-20211231_lab.xml	Edgar Link	unprocessable
htld-20211231_pre.xml	Edgar Link	unprocessable
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
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R6.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$HTLD
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2021 Form 10-K Financial Statement

#000079923322000006 Filed on February 25, 2022

Income Statement

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Facts In Submission

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$HTLD HEARTLAND EXPRESS INC Stock $htld

2021 Form 10-K Financial Statement

#000079923322000006 Filed on February 25, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HTLD
HEARTLAND EXPRESS INC Stock $htld