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Long-Term Debt (Notes) | 12 Months Ended
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Dec. 31, 2021
Line of Credit, Long-Term Debt [Abstract] |
Line of Credit and Long Term Debt | Long-Term Debt In November 2013, Heartland Express, Inc. of Iowa, (the "Borrower"), a wholly owned subsidiary of the Company, entered into a Credit Agreement with Wells Fargo Bank, National Association, (the “Bank”). On August 31, 2021, the Borrower and the Bank entered into the Second Amendment to this Credit Agreement. The Second Amendment (i) provides for a $25.0 million Revolver, which may be used for working capital, equipment financing, permitted acquisitions, and general corporate purposes, (ii) provides an uncommitted accordion feature, which allows the Company a one-time request, at the discretion of the Bank, to increase the Revolver by up to an additional $100.0 million, (iii) decreases the letter of credit subfeature of the Credit Agreement from $30.0 million to $20.0 million, and (iv) extends the maturity of the Existing Credit Agreement to August 31, 2023, subject to the Borrower’s ability to terminate the commitment at any time at no additional cost to the Borrower. The Credit Agreement is unsecured, with a negative pledge against all assets of our consolidated group, except for debt associated with permitted acquisitions, new purchase-money debt and capital lease obligations as described in the Credit Agreement. Interest on outstanding indebtedness under the Second Amendment is based on the Secured Overnight Financing Rate (“SOFR”) plus a spread based on the Company’s consolidated funded debt to adjusted EBITDA ratio. A non-usage fee is payable on the unused portion of the Revolver based on the Company’s consolidated funded debt to adjusted EBITDA ratio. The Credit Agreement contains customary financial covenants including, but not limited to, (i) a maximum adjusted leverage ratio of 2:1, measured quarterly on a trailing twelve month basis, (ii) a minimum net income requirement of $1.00, measured quarterly on a trailing twelve month basis, (iii) a minimum tangible net worth of $250.0 million requirement, measured quarterly, and (iv) limitations on other indebtedness and liens. The Credit Agreement also includes customary events of default, covenants, representations and warranties, and indemnification provisions. We were in compliance with the respective financial covenants as of and for the years ended December 31, 2021 and December 31, 2020. We had no long term debt outstanding at December 31, 2021 or 2020. Outstanding letters of credit associated with the revolving line of credit at December 31, 2021 were $8.5 million compared to $11.5 million at December 31, 2020. As of December 31, 2021, availability for future borrowing under the Credit Agreement was $16.5 million compared to $88.5 million at December 31, 2020.

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- Definition Line of Credit, Long-Term Debt [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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