$HTLD
HEARTLAND EXPRESS INC Stock $htld

$htld Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000079923321000016 Filed on February 22, 2021

Income Statement

Concept	2020 Q4	2019 Q4	2019 Q3
Revenue	$155.8M	$167.2M	$147.9M
YoY Change	-6.84%	13.76%	-2.23%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin	$102.8M	$120.7M	$102.2M
YoY Change	-14.83%	23.79%	-0.68%
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$28.60M	$29.90M	$25.70M
YoY Change	-4.35%	18.65%	1.18%
% of Gross Profit
Operating Expenses	$138.1M	$157.0M	$133.8M
YoY Change	-12.04%	23.62%	0.38%
Operating Profit	$23.77M	$17.66M	$26.74M
YoY Change	34.55%	-40.25%	6.39%
Interest Expense	$100.0K	-$100.0K	$452.0K
YoY Change	-200.0%	-112.5%
% of Operating Profit	0.42%	-0.57%	1.69%
Other Income/Expense, Net
YoY Change
Pretax Income	$23.90M	$17.52M	$27.42M
YoY Change	36.46%	-42.27%	6.6%
Income Tax	$6.200M	$4.700M	$6.914M
% Of Pretax Income	25.94%	26.83%	25.22%
Net Earnings	$17.67M	$12.79M	$20.50M
YoY Change	38.2%	-43.02%	7.58%
Net Earnings / Revenue	11.34%	7.65%	13.86%
Basic Earnings Per Share			$0.25
Diluted Earnings Per Share	$218.5K	$155.9K	$0.25
COMMON SHARES
Basic Shares Outstanding	80.80M shares	82.02M shares	81.99M shares
Diluted Shares Outstanding			82.04M shares

Balance Sheet

Concept	2020 Q4	2019 Q4	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$113.9M	$76.70M	$111.9M
YoY Change	48.5%	-52.48%	-6.75%
Cash & Equivalents	$113.9M	$76.68M	$111.9M
Short-Term Investments
Other Short-Term Assets	$15.34M	$8.947M	$15.35M
YoY Change	71.48%	-28.71%	-39.61%
Inventory
Prepaid Expenses
Receivables	$55.58M	$56.75M	$60.65M
Other Receivables	$0.00	$300.0K	$0.00
Total Short-Term Assets	$193.0M	$151.8M	$198.4M
YoY Change	27.14%	-34.7%	-8.25%
LONG-TERM ASSETS
Property, Plant & Equipment	$539.3M	$526.3M	$533.7M
YoY Change	2.47%	30.55%	25.48%
Goodwill	$168.3M	$168.3M	$165.0M
YoY Change	0.0%	27.1%	24.63%
Intangibles	$24.75M	$27.14M	$27.89M
YoY Change	-8.81%	87.22%	84.72%
Long-Term Investments
YoY Change
Other Assets	$17.68M	$19.39M	$18.36M
YoY Change	-8.84%	1.26%	-8.6%
Total Long-Term Assets	$758.2M	$747.1M	$750.7M
YoY Change	1.48%	30.23%	25.68%
TOTAL ASSETS
Total Short-Term Assets	$193.0M	$151.8M	$198.4M
Total Long-Term Assets	$758.2M	$747.1M	$750.7M
Total Assets	$951.2M	$898.9M	$949.0M
YoY Change	5.81%	11.5%	16.66%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$12.80M	$11.10M	$16.30M
YoY Change	15.32%	4.72%	-38.26%
Accrued Expenses	$56.80M	$52.30M	$55.30M
YoY Change	8.6%	-3.33%	0.55%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due			$14.28M
YoY Change
Total Short-Term Liabilities	$71.04M	$63.41M	$86.79M
YoY Change	12.04%	-1.98%	6.54%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$39.20M
YoY Change
Other Long-Term Liabilities	$51.80M	$57.20M	$54.80M
YoY Change	-9.44%	4.95%	-9.57%
Total Long-Term Liabilities	$155.8M	$150.9M	$189.1M
YoY Change	3.27%	20.16%	38.03%
TOTAL LIABILITIES
Total Short-Term Liabilities	$71.04M	$63.41M	$86.79M
Total Long-Term Liabilities	$155.8M	$150.9M	$189.1M
Total Liabilities	$226.8M	$214.3M	$275.9M
YoY Change	5.87%	12.63%	26.29%
SHAREHOLDERS EQUITY
Retained Earnings	$891.0M	$826.7M	$815.5M
YoY Change	7.78%	8.73%	10.29%
Common Stock	$5.237M	$5.048M	$4.852M
YoY Change	3.74%	15.75%	13.36%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$171.9M	$147.1M	$147.2M
YoY Change	16.88%	-1.07%	-0.99%
Treasury Stock Shares	10.04M shares	8.661M shares	8.673M shares
Shareholders Equity	$724.3M	$684.7M	$673.1M
YoY Change
Total Liabilities & Shareholders Equity	$951.2M	$898.9M	$949.0M
YoY Change	5.81%	11.5%	16.66%

Cashflow Statement

Concept	2020 Q4	2019 Q4	2019 Q3
OPERATING ACTIVITIES
Net Income	$17.67M	$12.79M	$20.50M
YoY Change	38.2%	-43.02%	7.58%
Depreciation, Depletion And Amortization	$28.60M	$29.90M	$25.70M
YoY Change	-4.35%	18.65%	1.18%
Cash From Operating Activities	$45.90M	$37.00M	$37.70M
YoY Change	24.05%	-2.37%	-3.08%
INVESTING ACTIVITIES
Capital Expenditures	-$40.50M	-$43.30M	-$54.00M
YoY Change	-6.47%	3.59%	33.0%
Acquisitions			$61.93M
YoY Change
Other Investing Activities	$41.80M	$26.80M	-$34.60M
YoY Change	55.97%	-41.74%	-267.15%
Cash From Investing Activities	$1.300M	-$16.50M	-$88.60M
YoY Change	-107.88%	-483.72%	343.0%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$750.0K
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-15.10M	-55.20M	-43.20M
YoY Change	-72.64%	3147.06%	644.83%
NET CHANGE
Cash From Operating Activities	45.90M	37.00M	37.70M
Cash From Investing Activities	1.300M	-16.50M	-88.60M
Cash From Financing Activities	-15.10M	-55.20M	-43.20M
Net Change In Cash	32.10M	-34.70M	-94.10M
YoY Change	-192.51%	-185.68%	-818.32%
FREE CASH FLOW
Cash From Operating Activities	$45.90M	$37.00M	$37.70M
Capital Expenditures	-$40.50M	-$43.30M	-$54.00M
Free Cash Flow	$86.40M	$80.30M	$91.70M
YoY Change	7.6%	0.75%	15.35%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0000799233
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Entity Small Business EntitySmallBusiness	false
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	79977102	shares
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	IA
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	901 Heartland Way
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	North Liberty
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	90689000	shares
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	395000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	395000000	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	90689000	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	80653000	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	82028000	shares
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	10036000	shares
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	8661000	shares
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.08
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.08
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.08
CY2020	htld	Valuation Allowance Against Any Deferred Tax Asset ValuationAllowanceAgainstAnyDeferredTaxAsset	0	USD
CY2019	htld	Valuation Allowance Against Any Deferred Tax Asset ValuationAllowanceAgainstAnyDeferredTaxAsset	0	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2019	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2018	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2018	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020Q4	us-gaap	Deposit Contracts Liabilities DepositContractsLiabilities	0	USD
CY2019Q4	us-gaap	Deposit Contracts Liabilities DepositContractsLiabilities	0	USD
CY2019Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
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
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	Rate
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	59700	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	52150	shares
CY2020	htld	Vesting Terms Range Minimum VestingTermsRangeMinimum	0
CY2020	htld	Vesting Terms Range Maximum VestingTermsRangeMaximum	4
CY2020	htld	Earnings Per Share Basic Details EarningsPerShareBasicDetails	0.87
CY2019	htld	Earnings Per Share Basic Details EarningsPerShareBasicDetails	0.89
CY2018	htld	Earnings Per Share Basic Details EarningsPerShareBasicDetails	0.88
CY2020	htld	Earnings Per Share Diluted Details EarningsPerShareDilutedDetails	0.87
CY2019	htld	Earnings Per Share Diluted Details EarningsPerShareDilutedDetails	0.89
CY2018	htld	Earnings Per Share Diluted Details EarningsPerShareDilutedDetails	0.88
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Entity File Number EntityFileNumber	0-15087
CY2020	dei	Entity Registrant Name EntityRegistrantName	HEARTLAND EXPRESS, INC.
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	NV
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	93-0926999
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	901 Heartland Way
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	North Liberty
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	IA
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	52317
CY2020	dei	City Area Code CityAreaCode	319
CY2020	dei	Local Phone Number LocalPhoneNumber	626-3600
CY2020	dei	Security12g Title Security12gTitle	Common Stock, $0.01 par value
CY2020	dei	Trading Symbol TradingSymbol	HTLD
CY2020	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2020	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2020Q2	dei	Entity Public Float EntityPublicFloat	900000000	USD
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	79977102	shares
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	53700	shares
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
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	55577000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	56753000	USD
CY2020Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	8241000	USD
CY2019Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	9107000	USD
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	15342000	USD
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	8947000	USD
CY2020Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	0	USD
CY2019Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	323000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	193012000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	151814000	USD
CY2020Q4	us-gaap	Land And Land Improvements LandAndLandImprovements	77525000	USD
CY2019Q4	us-gaap	Land And Land Improvements LandAndLandImprovements	60637000	USD
CY2020Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	86712000	USD
CY2019Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	70603000	USD
CY2020Q4	us-gaap	Leasehold Improvements Gross LeaseholdImprovementsGross	0	USD
CY2019Q4	us-gaap	Leasehold Improvements Gross LeaseholdImprovementsGross	437000	USD
CY2020Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	4807000	USD
CY2019Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	4255000	USD
CY2020Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	14380000	USD
CY2019Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	13726000	USD
CY2020Q4	htld	Revenue Equipment RevenueEquipment	590153000	USD
CY2019Q4	htld	Revenue Equipment RevenueEquipment	583134000	USD
CY2020Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	5783000	USD
CY2019Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	6351000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	779360000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	739143000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	240080000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	212856000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	539280000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	526287000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	168295000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	168295000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	24746000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	27136000	USD
CY2020Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	8164000	USD
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	6006000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	17679000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	19393000	USD
CY2020Q4	us-gaap	Assets Assets	951176000	USD
CY2019Q4	us-gaap	Assets Assets	898931000	USD
CY2020Q4	us-gaap	Self Insurance Reserve Noncurrent SelfInsuranceReserveNoncurrent	45995000	USD
CY2020Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	12751000	USD
CY2019Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	11060000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	22422000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	24712000	USD
CY2020Q4	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	15837000	USD
CY2019Q4	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	17584000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current And Noncurrent OtherAccruedLiabilitiesCurrentAndNoncurrent	18557000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current And Noncurrent OtherAccruedLiabilitiesCurrentAndNoncurrent	10051000	USD
CY2020Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	1475000	USD
CY2019Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	0	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	71042000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	63407000	USD
CY2020Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	5801000	USD
CY2019Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	5956000	USD
CY2020Q4	us-gaap	Deferred Income Taxes And Other Tax Liabilities Noncurrent DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent	104004000	USD
CY2019Q4	us-gaap	Deferred Income Taxes And Other Tax Liabilities Noncurrent DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent	93698000	USD
CY2019Q4	us-gaap	Self Insurance Reserve Noncurrent SelfInsuranceReserveNoncurrent	51211000	USD
CY2020Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	155800000	USD
CY2019Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	150865000	USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2019Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	907000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	907000	USD
CY2020Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	4330000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	4141000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	890970000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	826666000	USD
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	171873000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	147055000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	724334000	USD
CY2018	us-gaap	Labor And Related Expense LaborAndRelatedExpense	227872000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	684659000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	951176000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	898931000	USD
CY2020	us-gaap	Revenues Revenues	645262000	USD
CY2019	us-gaap	Revenues Revenues	596815000	USD
CY2018	us-gaap	Revenues Revenues	610803000	USD
CY2020	us-gaap	Labor And Related Expense LaborAndRelatedExpense	269482000	USD
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	240139000	USD
CY2020	htld	Rent And Purchased Transportation RentAndPurchasedTransportation	4643000	USD
CY2019	htld	Rent And Purchased Transportation RentAndPurchasedTransportation	7984000	USD
CY2018	htld	Rent And Purchased Transportation RentAndPurchasedTransportation	18700000	USD
CY2020	us-gaap	Fuel Costs FuelCosts	86094000	USD
CY2019	us-gaap	Fuel Costs FuelCosts	101871000	USD
CY2018	us-gaap	Fuel Costs FuelCosts	110536000	USD
CY2020	us-gaap	Cost Maintenance CostMaintenance	27647000	USD
CY2019	us-gaap	Cost Maintenance CostMaintenance	24479000	USD
CY2018	us-gaap	Cost Maintenance CostMaintenance	27143000	USD
CY2020	us-gaap	Direct Taxes And Licenses Costs DirectTaxesAndLicensesCosts	14962000	USD
CY2019	us-gaap	Direct Taxes And Licenses Costs DirectTaxesAndLicensesCosts	14459000	USD
CY2019	us-gaap	Direct Taxes And Licenses Costs DirectTaxesAndLicensesCosts	14459000	USD
CY2018	us-gaap	Direct Taxes And Licenses Costs DirectTaxesAndLicensesCosts	16390000	USD
CY2020	us-gaap	Operating Insurance And Claims Costs Production OperatingInsuranceAndClaimsCostsProduction	22229000	USD
CY2019	us-gaap	Operating Insurance And Claims Costs Production OperatingInsuranceAndClaimsCostsProduction	17003000	USD
CY2018	us-gaap	Operating Insurance And Claims Costs Production OperatingInsuranceAndClaimsCostsProduction	17227000	USD
CY2020	us-gaap	Direct Communications And Utilities Costs DirectCommunicationsAndUtilitiesCosts	5281000	USD
CY2019	us-gaap	Direct Communications And Utilities Costs DirectCommunicationsAndUtilitiesCosts	4953000	USD
CY2018	us-gaap	Direct Communications And Utilities Costs DirectCommunicationsAndUtilitiesCosts	6086000	USD
CY2020	htld	Depreciationandamortizationexcludingdepreciationoncommunicationequipment Depreciationandamortizationexcludingdepreciationoncommunicationequipment	109937000	USD
CY2019	htld	Depreciationandamortizationexcludingdepreciationoncommunicationequipment Depreciationandamortizationexcludingdepreciationoncommunicationequipment	100212000	USD
CY2018	htld	Depreciationandamortizationexcludingdepreciationoncommunicationequipment Depreciationandamortizationexcludingdepreciationoncommunicationequipment	100519000	USD
CY2020	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	26398000	USD
CY2019	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	22781000	USD
CY2018	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	21506000	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
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	24963000	USD
CY2020	us-gaap	Costs And Expenses CostsAndExpenses	551843000	USD
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	502540000	USD
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	502540000	USD
CY2018	us-gaap	Costs And Expenses CostsAndExpenses	521016000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	93419000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	94275000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	89787000	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	842000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	3955000	USD
CY2018	us-gaap	Investment Income Interest InvestmentIncomeInterest	2130000	USD
CY2020	us-gaap	Interest Expense Debt InterestExpenseDebt	0	USD
CY2019	us-gaap	Interest Expense Debt InterestExpenseDebt	1052000	USD
CY2018	us-gaap	Interest Expense Debt InterestExpenseDebt	0	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	94261000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	97178000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	91917000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23455000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24211000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19240000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	70806000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	72967000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	72677000	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
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	70806000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	72967000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	72677000	USD
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.87
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.89
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.88
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.87
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.89
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.89
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.88
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
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	82378000	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
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	82410000	shares
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.08
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.08
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.08
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	574645000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	72677000	USD
CY2018	us-gaap	Dividends Common Stock DividendsCommonStock	6589000	USD
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	25087000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	326000	USD
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
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2092000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2065000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	70806000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	72967000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	72677000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	110381000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	100932000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	101329000	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
CY2018	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-2755000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	539000	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
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	24963000	USD
CY2020	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-1176000	USD
CY2019	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-6676000	USD
CY2018	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-15338000	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
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-1227000	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
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-26012000	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
CY2018	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	3653000	USD
CY2018	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	3653000	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
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	146543000	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
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	130752000	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
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	169276000	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
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	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
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-710000	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
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-37814000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	6502000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	6563000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	6589000	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
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	213000	USD
CY2020	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	93348000	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	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
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	25087000	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
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-31889000	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
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	76840000	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
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	106098000	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
CY2020	us-gaap	Interest Paid Net InterestPaidNet	0	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	929000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	0	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	13664000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	18888000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	12832000	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
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1944000	USD
CY2020	htld	Soldrevenueequipmentinothercurrentassets Soldrevenueequipmentinothercurrentassets	3383000	USD
CY2019	htld	Soldrevenueequipmentinothercurrentassets Soldrevenueequipmentinothercurrentassets	1282000	USD
CY2018	htld	Soldrevenueequipmentinothercurrentassets Soldrevenueequipmentinothercurrentassets	3783000	USD
CY2020	htld	Treasury Stock Acquired In Accounts Payable TreasuryStockAcquiredInAccountsPayable	485000	USD
CY2019	htld	Treasury Stock Acquired In Accounts Payable TreasuryStockAcquiredInAccountsPayable	0	USD
CY2018	htld	Treasury Stock Acquired In Accounts Payable TreasuryStockAcquiredInAccountsPayable	0	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
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	161448000	USD
CY2020Q4	us-gaap	Restricted Cash And Investments Current RestrictedCashAndInvestmentsCurrent	1075000	USD
CY2019Q4	us-gaap	Restricted Cash And Investments Current RestrictedCashAndInvestmentsCurrent	1594000	USD
CY2018Q4	us-gaap	Restricted Cash And Investments Current RestrictedCashAndInvestmentsCurrent	3105000	USD
CY2020Q4	us-gaap	Restricted Cash And Investments Noncurrent RestrictedCashAndInvestmentsNoncurrent	16213000	USD
CY2019Q4	us-gaap	Restricted Cash And Investments Noncurrent RestrictedCashAndInvestmentsNoncurrent	17798000	USD
CY2018Q4	us-gaap	Restricted Cash And Investments Noncurrent RestrictedCashAndInvestmentsNoncurrent	18385000	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
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	19400000	USD
CY2020	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 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 December 31, 2018, A & M Express, Inc. was merged into Heartland Express, Inc. of Iowa. 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).</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:12pt;font-weight:400;line-height:115%"> </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">We primarily provide nationwide asset-based dry van truckload service for major shippers from Washington to Florida and New England to California.</span></div>
CY2020	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>
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segments
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	17300000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	1800000	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
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	1600000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	17800000	USD
CY2020Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	1500000	USD
CY2019Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	1500000	USD
CY2020Q4	htld	Customer Credit Terms Days CustomerCreditTermsDays	30	D
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1100000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1100000	USD
CY2020	htld	Amortization Period Of Tires AmortizationPeriodOfTires	two years
CY2020	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, 2020, 2019, and 2018.</span></div>
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	1800000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	1900000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2020Q4	htld	Health Insurance Reserves HealthInsuranceReserves	4500000	USD
CY2019Q4	htld	Health Insurance Reserves HealthInsuranceReserves	6000000.0	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	1100000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	1200000	USD
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
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	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
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
CY2018	htld	Net Income Loss Eps Details NetIncomeLossEPSDetails	72677000	USD
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	82378000	shares
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.88
CY2018	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	32000	shares
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	72677000	USD
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	82410000	shares
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.88
CY2020	htld	Portionoftaxbenefitrecordedpositionsmorelikelythannottobesustained Portionoftaxbenefitrecordedpositionsmorelikelythannottobesustained	0.50
CY2020	htld	Concentration Of Risk Number Of Customers ConcentrationOfRiskNumberOfCustomers	5	Customer
CY2020	us-gaap	Concentration Risk Percentage1 ConcentrationRiskPercentage1	0.34
CY2019	us-gaap	Concentration Risk Percentage1 ConcentrationRiskPercentage1	0.36
CY2018	us-gaap	Concentration Risk Percentage1 ConcentrationRiskPercentage1	0.37
CY2020	htld	Concentration Of Risk Number Of Customers ConcentrationOfRiskNumberOfCustomers	5	Customer
CY2020Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	1100000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	1200000	USD
CY2020	htld	Revenues Details RevenuesDetails	645300000	USD
CY2019	htld	Revenues Details RevenuesDetails	596800000	USD
CY2018	htld	Revenues Details RevenuesDetails	610800000	USD
CY2020	htld	Fuel Surcharge Revenue FuelSurchargeRevenue	61700000	USD
CY2019	htld	Fuel Surcharge Revenue FuelSurchargeRevenue	75000000.0	USD
CY2018	htld	Fuel Surcharge Revenue FuelSurchargeRevenue	85300000	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
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	14900000	USD
CY2019Q3	htld	Business Combination Total Consideration BusinessCombinationTotalConsideration	156000000.0	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	3000000.0	USD
CY2018	htld	Business Combination Pro Forma Adjustments Net Income BusinessCombinationProFormaAdjustmentsNetIncome	3600000	USD
CY2019	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	694672000	USD
CY2018	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	760917000	USD
CY2019	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	75951000	USD
CY2018	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	76259000	USD
CY2019Q4	htld	Acquired Business Percent Of Assets AcquiredBusinessPercentOfAssets	0.211
CY2019	htld	Acquired Business Percent Of Revenue AcquiredBusinessPercentOfRevenue	0.088
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	500000	USD
CY2019Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangibles BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles	15300000	USD
CY2019Q3	us-gaap	Accounts And Other Receivables Net Current AccountsAndOtherReceivablesNetCurrent	14474000	USD
CY2019Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Other BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther	1656000	USD
CY2019Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	117060000	USD
CY2019Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Noncurrent Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets	802000	USD
CY2019Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet	35885000	USD
CY2019Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets	185177000	USD
CY2019Q3	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	31737000	USD
CY2019Q3	us-gaap	Self Insurance Reserve SelfInsuranceReserve	4371000	USD
CY2019Q3	us-gaap	Long Term Debt LongTermDebt	70191000	USD
CY2019Q3	htld	Deferred Taxes DeferredTaxes	16201000	USD
CY2019Q3	htld	Business Combination Cash And Equity Transferred BusinessCombinationCashAndEquityTransferred	62677000	USD
CY2019Q3	htld	Payments To Acquire Businesses Net Of Cash Acquired1 PaymentsToAcquireBusinessesNetOfCashAcquired1	61927000	USD
CY2019Q3	us-gaap	Business Acquisition Equity Interest Issued Or Issuable Value Assigned BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned	750000	USD
CY2019Q3	htld	Business Combination Cash And Equity Transferred BusinessCombinationCashAndEquityTransferred	62677000	USD
CY2020	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	0	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2400000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2700000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2500000	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
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	41200000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	14064000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	27136000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Rolling Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextRollingTwelveMonths	2400000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	2300000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	2200000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1900000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1900000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	132410000	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	35885000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	168295000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	USD
CY2020Q4	us-gaap	Goodwill Goodwill	168295000	USD
CY2013Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	250000000.0	USD
CY2016Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	175000000.0	USD
CY2018Q3	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	100000000.0	USD
CY2013Q4	htld	Allowable Amount For Issuance Of Letters Of Credit AllowableAmountForIssuanceOfLettersOfCredit	20000000.0	USD
CY2020Q4	htld	Allowable Amount For Issuance Of Letters Of Credit AllowableAmountForIssuanceOfLettersOfCredit	30000000.0	USD
CY2020	htld	Debt Instrument Covenant Leverage Ratio DebtInstrumentCovenantLeverageRatio	2
CY2020	htld	Debt Covenant Minimum Net Income Requirement DebtCovenantMinimumNetIncomeRequirement	1.00	USD
CY2020	htld	Debt Covenant Minimum Tangible Net Worth DebtCovenantMinimumTangibleNetWorth	250000000.0	USD
CY2020Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2020Q4	htld	Lettersofcreditoutstandingonalineofcredit Lettersofcreditoutstandingonalineofcredit	11500000	USD
CY2019Q4	htld	Lettersofcreditoutstandingonalineofcredit Lettersofcreditoutstandingonalineofcredit	11300000	USD
CY2020Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	88500000	USD
CY2019Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	88700000	USD
CY2020Q4	htld	Aggregate Self Insurance Corridor AggregateSelfInsuranceCorridor	1000000.0	USD
CY2020Q4	htld	Aggregate Self Insurance Corridor Claims Minimum AggregateSelfInsuranceCorridorClaimsMinimum	2000000.0	USD
CY2020Q4	htld	Aggregate Self Insurance Corridor Claims Maximum AggregateSelfInsuranceCorridorClaimsMaximum	3000000.0	USD
CY2020Q4	htld	Excess Insurance Coverage Limit ExcessInsuranceCoverageLimit	60000000.0	USD
CY2020Q4	htld	Auto Liability50 Exposure Minimum AutoLiability50ExposureMinimum	5000000.0	USD
CY2020Q4	htld	Auto Liability50 Exposure Maximum AutoLiability50ExposureMaximum	10000000.0	USD
CY2020Q4	htld	Excess Insurance Coverage Limit ExcessInsuranceCoverageLimit	60000000.0	USD
CY2019Q4	htld	Excess Insurance Coverage Limit ExcessInsuranceCoverageLimit	100000000.0	USD
CY2019Q4	htld	Excess Insurance Coverage Minimum Claims ExcessInsuranceCoverageMinimumClaims	3000000.0	USD
CY2019Q4	htld	Excess Insurance Coverage Maximum Claims ExcessInsuranceCoverageMaximumClaims	10000000.0	USD
CY2019Q4	htld	Excess Insurance Coverage Limit ExcessInsuranceCoverageLimit	100000000.0	USD
CY2019Q4	htld	Excess Insurance Coverage Limit ExcessInsuranceCoverageLimit	100000000.0	USD
CY2020Q4	htld	Trust Fund Requirements TrustFundRequirements	700000	USD
CY2020Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	1500000	USD
CY2019Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	1500000	USD
CY2020Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	13000000.0	USD
CY2020Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	258000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	262000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	6353000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	3892000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	126000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	178000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Self Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance	14283000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Self Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance	15054000	USD
CY2020Q4	htld	Deferred Tax Assets Operating Loss Carryforwards State DeferredTaxAssetsOperatingLossCarryforwardsState	0	USD
CY2019Q4	htld	Deferred Tax Assets Operating Loss Carryforwards State DeferredTaxAssetsOperatingLossCarryforwardsState	2618000	USD
CY2020Q4	htld	Deferred Tax Assets Operating Loss Carryforwards Federal DeferredTaxAssetsOperatingLossCarryforwardsFederal	0	USD
CY2019Q4	htld	Deferred Tax Assets Operating Loss Carryforwards Federal DeferredTaxAssetsOperatingLossCarryforwardsFederal	8793000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense DeferredTaxAssetsTaxDeferredExpense	1037000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense DeferredTaxAssetsTaxDeferredExpense	1052000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	221000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	3000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	22278000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	31852000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	22278000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	31852000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	98355000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	101843000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	18959000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	15939000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	804000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	1762000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	118118000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	119544000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	95840000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	87692000	USD
CY2020Q4	us-gaap	Deferred Income Taxes And Other Assets Noncurrent DeferredIncomeTaxesAndOtherAssetsNoncurrent	8164000	USD
CY2019Q4	us-gaap	Deferred Income Taxes And Other Assets Noncurrent DeferredIncomeTaxesAndOtherAssetsNoncurrent	6006000	USD
CY2020Q4	us-gaap	Deferred Tax And Other Liabilities Noncurrent DeferredTaxAndOtherLiabilitiesNoncurrent	104004000	USD
CY2019Q4	us-gaap	Deferred Tax And Other Liabilities Noncurrent DeferredTaxAndOtherLiabilitiesNoncurrent	93698000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	95840000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	87692000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2757000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	10835000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	14122000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	11985000	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
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4498000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	15307000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	19820000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	16483000	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
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	5537000	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
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-2780000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	8148000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	4391000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23455000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24211000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19240000	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
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	19302000	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
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2200000	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
CY2018	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	-408000	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
CY2018	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-1327000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-73000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	289000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-1067000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	224000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-193000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-276000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23455000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24211000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19240000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4900000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	5000000.0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	3900000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	4000000.0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	-100000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	400000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	900000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	900000	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
CY2018	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	-1400000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	5010000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4585000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	767000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1138000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	124000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	216000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	428000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	701000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	196000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	136000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4937000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	5010000	USD
CY2020Q4	us-gaap	Decrease In Unrecognized Tax Benefits Is Reasonably Possible DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	0	USD
CY2020Q4	us-gaap	Increase In Unrecognized Tax Benefits Is Reasonably Possible IncreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	1000000.0	USD
CY2020Q4	htld	Stock Repurchase Shares StockRepurchaseShares	5400000	shares
CY2020	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1500000	shares
CY2019	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	0	shares
CY2018	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1400000	shares
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	6500000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	6600000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	6600000	USD
CY2011Q3	htld	Restricted Stock Shares Authorized RestrictedStockSharesAuthorized	900000	shares
CY2020	htld	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant1 ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant1	100000	shares
CY2020	htld	Vesting Share Price Range Minimum VestingSharePriceRangeMinimum	18.12	USD
CY2020	htld	Vesting Share Price Range Maximum VestingSharePriceRangeMaximum	23.37	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	2100000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	2100000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	500000	USD
CY2020	htld	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized1	700000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P0Y10M24D
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
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	800000	USD
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
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	53700	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	21.82
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	10000.0	shares
CY2018	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	18.58
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	35700	shares
CY2018	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	21.48
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	1500	shares
CY2018	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
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
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2300000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1600000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1000000.0	USD
CY2020Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance Sheet Amount UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount	121900000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	13238000	USD
CY2020Q1	us-gaap	Revenues Revenues	166318000	USD
CY2020Q2	us-gaap	Revenues Revenues	160873000	USD
CY2020Q3	us-gaap	Revenues Revenues	162282000	USD
CY2020Q4	us-gaap	Revenues Revenues	155789000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	17326000	USD
CY2020Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	24989000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	27339000	USD
CY2020Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	23765000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	17703000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	25146000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	27510000	USD
CY2020Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	23902000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	19182000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	20714000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	17672000	USD
CY2020Q1	htld	Earnings Per Share Basic Details EarningsPerShareBasicDetails	0.16
CY2020Q2	htld	Earnings Per Share Basic Details EarningsPerShareBasicDetails	0.24
CY2020Q3	htld	Earnings Per Share Basic Details EarningsPerShareBasicDetails	0.25
CY2020Q4	htld	Earnings Per Share Basic Details EarningsPerShareBasicDetails	0.22
CY2020Q1	htld	Earnings Per Share Diluted Details EarningsPerShareDilutedDetails	0.16
CY2020Q2	htld	Earnings Per Share Diluted Details EarningsPerShareDilutedDetails	0.24
CY2020Q3	htld	Earnings Per Share Diluted Details EarningsPerShareDilutedDetails	0.25
CY2020Q4	htld	Earnings Per Share Diluted Details EarningsPerShareDilutedDetails	0.22
CY2019Q1	us-gaap	Revenues Revenues	139536000	USD
CY2019Q2	us-gaap	Revenues Revenues	142144000	USD
CY2019Q3	us-gaap	Revenues Revenues	147908000	USD
CY2019Q4	us-gaap	Revenues Revenues	167227000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	20843000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	0	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	29030000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	26739000	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	17663000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	21988000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	30259000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	27415000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	17516000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	17318000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	22361000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	20501000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	12787000	USD
CY2019Q1	htld	Earnings Per Share Basic Details EarningsPerShareBasicDetails	0.21
CY2019Q2	htld	Earnings Per Share Basic Details EarningsPerShareBasicDetails	0.27
CY2019Q3	htld	Earnings Per Share Basic Details EarningsPerShareBasicDetails	0.25
CY2019Q4	htld	Earnings Per Share Basic Details EarningsPerShareBasicDetails	0.16
CY2019Q1	htld	Earnings Per Share Diluted Details EarningsPerShareDilutedDetails	0.21
CY2019Q2	htld	Earnings Per Share Diluted Details EarningsPerShareDilutedDetails	0.27
CY2019Q3	htld	Earnings Per Share Diluted Details EarningsPerShareDilutedDetails	0.25
CY2019Q4	htld	Earnings Per Share Diluted Details EarningsPerShareDilutedDetails	0.16
CY2020	htld	Repurchase Of Common Stock Shares RepurchaseOfCommonStockShares	700000	shares
CY2020	htld	Payments For Repurchase Of Common Stock1 PaymentsForRepurchaseOfCommonStock1	12900000	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 Deductions ValuationAllowancesAndReservesDeductions	0	USD
CY2019Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	1100000	USD
CY2017Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	1475000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	0	USD
CY2018	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	0	USD
CY2018	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	575000	USD
CY2018Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	900000	USD

Files In Submission

Name	View Source	Status
0000799233-21-000016-index-headers.html	Edgar Link	pending
0000799233-21-000016-index.html	Edgar Link	pending
0000799233-21-000016.txt	Edgar Link	pending
0000799233-21-000016-xbrl.zip	Edgar Link	pending
exhibit212020q4.htm	Edgar Link	pending
exhibit3112020q4.htm	Edgar Link	pending
exhibit3122020q4.htm	Edgar Link	pending
exhibit3212020q4.htm	Edgar Link	pending
exhibit3222020q4.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
htld-20201231.htm	Edgar Link	pending
htld-20201231.xsd	Edgar Link	pending
htld-20201231_cal.xml	Edgar Link	unprocessable
htld-20201231_def.xml	Edgar Link	unprocessable
htld-20201231_htm.xml	Edgar Link	completed
htld-20201231_lab.xml	Edgar Link	unprocessable
htld-20201231_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
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.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

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$HTLD
HEARTLAND EXPRESS INC Stock $htld

2020 Q4 Form 10-K Financial Statement

#000079923321000016 Filed on February 22, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HTLD HEARTLAND EXPRESS INC Stock $htld

2020 Q4 Form 10-K Financial Statement

#000079923321000016 Filed on February 22, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HTLD
HEARTLAND EXPRESS INC Stock $htld