10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

[X]   QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2021

[  ]          TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                                                    to

Commission file number 0-15087

HEARTLAND EXPRESS INC.

(Exact Name of Registrant as Specified in Its Charter)

Nevada			93-0926999
(State or Other Jurisdiction			(I.R.S. Employer
of Incorporation or organization)			Identification No.)
901 Heartland Way,	North Liberty,	Iowa	52317
(Address of Principal Executive Offices)			(Zip Code)

319-645-7060

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.01 par value	HTLD	NASDAQ

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15 (d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days.

Yes [X] No [  ]

Indicate by check mark whether the registrant has submitted electronically, every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

Yes [X] No [  ]

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See definition of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act:

Large accelerated filer [X]	Accelerated filer [ ]
Non-accelerated filer [ ]	Smaller reporting company [ ]
	Emerging growth company [ ]

If an emerging company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. [  ]

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes [ ] No [ X ]

As of October 29, 2021 there were 78,904,751 shares of the registrant’s common stock ($0.01 par value) outstanding.

1

HEARTLAND EXPRESS, INC.

AND SUBSIDIARIES

TABLE OF CONTENTS

	Page
PART I - FINANCIAL INFORMATION
Item 1. Financial Statements
Consolidated Balance Sheets as of September 30, 2021 and December 31, 2020 (unaudited)	4
Consolidated Statements of Comprehensive Income for the Three and Nine Months Ended September 30, 2021 and 2020 (unaudited)	5
Consolidated Statements of Stockholders' Equity for the Three and Nine Months Ended September 30, 2021 and 2020 (unaudited)	6
Consolidated Statements of Cash Flows for the Nine Months Ended September 30, 2021 and 2020 (unaudited)	7
Notes to Consolidated Financial Statements (unaudited)	8
Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations	15
Item 3. Quantitative and Qualitative Disclosures about Market Risk	23
Item 4. Controls and Procedures	23
PART II - OTHER INFORMATION
Item 1. Legal Proceedings	25
Item 1A. Risk Factors	25
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	26
Item 3. Defaults Upon Senior Securities	26
Item 4. Mine Safety Disclosures	26
Item 5. Other Information	26
Item 6. Exhibits	27
Signatures	28

2

PART I

HEARTLAND EXPRESS, INC. AND SUBSIDIARIES CONSOLIDATED BALANCE SHEETS (in thousands, except per share amounts) (unaudited)
ASSETS	September 30, 2021		December 31, 2020
CURRENT ASSETS
Cash and cash equivalents	$	180,366	$	113,852
Trade receivables, net of $1.1 million allowance in 2021 and 2020, respectively	58,538		55,577
Prepaid tires	9,272		8,241
Other current assets	10,398		15,342
Total current assets	258,574		193,012
PROPERTY AND EQUIPMENT
Land and land improvements	83,698		77,525
Buildings	89,375		86,712
Furniture and fixtures	5,282		4,807
Shop and service equipment	14,404		14,380
Revenue equipment	518,505		590,153
Construction in progress	14,238		5,783
Property and equipment, gross	725,502		779,360
Less accumulated depreciation	234,444		240,080
Property and equipment, net	491,058		539,280
GOODWILL	168,295		168,295
OTHER INTANGIBLES, NET	22,953		24,746
DEFERRED INCOME TAXES, NET	—		8,164
OTHER ASSETS	17,400		17,679
	$	958,280	$	951,176
LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	14,430	$	12,751
Dividend payable	41,095		—
Compensation and benefits	24,355		22,422
Insurance accruals	13,645		15,837
Other accruals	19,001		18,557
Income tax payable	4,513		1,475
Total current liabilities	117,039		71,042
LONG-TERM LIABILITIES
Income taxes payable	5,385		5,801
Deferred income taxes, net	87,217		104,004
Insurance accruals less current portion	39,823		45,995
Total long-term liabilities	132,425		155,800
COMMITMENTS AND CONTINGENCIES (Note 13)
STOCKHOLDERS' EQUITY
Preferred stock, par value $.01; authorized 5,000 shares; none issued	—		—
Capital stock, common, $.01 par value; authorized 395,000 shares; issued 90,689 in 2021 and 2020; outstanding 78,943 and 80,653 in 2021 and 2020, respectively	907		907
Additional paid-in capital	4,319		4,330
Retained earnings	905,620		890,970
Treasury stock, at cost; 11,746 and 10,036 in 2021 and 2020, respectively	(202,030)		(171,873)
	708,816		724,334
	$	958,280	$	951,176

The accompanying notes are an integral part of these consolidated financial statements.

3

HEARTLAND EXPRESS, INC.
AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(in thousands, except per share amounts)
(unaudited)
	Three Months Ended September 30,				Nine Months Ended   September 30,
	2021		2020		2021		2020
OPERATING REVENUE	$	152,612	$	162,282	$	459,142	$	489,473
OPERATING EXPENSES
Salaries, wages, and benefits	62,733		67,178		190,446		205,579
Rent and purchased transportation	950		999		2,922		3,635
Fuel	25,258		21,218		74,220		65,445
Operations and maintenance	5,372		7,118		16,729		21,516
Operating taxes and licenses	3,311		3,664		10,345		11,229
Insurance and claims	5,053		4,827		15,171		16,034
Communications and utilities	1,218		1,398		3,412		4,091
Depreciation and amortization	25,280		27,625		78,162		81,427
Other operating expenses	5,418		6,637		16,173		19,602
Gain on disposal of property and equipment	(15,254)		(5,721)		(27,341)		(8,739)
	119,339		134,943		380,239		419,819
Operating income	33,273		27,339		78,903		69,654
Interest income	181		171		493		704
Income before income taxes	33,454		27,510		79,396		70,358
Federal and state income taxes	8,988		6,796		20,454		17,224
Net income	$	24,466	$	20,714	$	58,942	$	53,134
Other comprehensive income, net of tax	—		—		—		—
Comprehensive income	$	24,466	$	20,714	$	58,942	$	53,134
Net income per share
Basic	$	0.31	$	0.25	$	0.74	$	0.65
Diluted	$	0.31	$	0.25	$	0.74	$	0.65
Weighted average shares outstanding
Basic	79,336		81,370		79,795		81,530
Diluted	79,364		81,404		79,839		81,587
Dividends declared per share	$	0.52	$	0.02	$	0.56	$	0.06

The accompanying notes are an integral part of these consolidated financial statements.

4

HEARTLAND EXPRESS, INC
AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
(in thousands, except per share amounts)
(unaudited)
	Capital		Additional
	Stock,		Paid-In		Retained		Treasury
	Common		Capital		Earnings		Stock		Total
Balance, December 31, 2020	$	907	$	4,330	$	890,970	$	(171,873)	$	724,334
Net income	—		—		13,734		—		13,734
Dividends on common stock, $0.02 per share	—		—		(1,599)		—		(1,599)
Repurchases of common stock	—		—		—		(14,537)		(14,537)
Stock-based compensation, net of tax	—		146		—		339		485
Balance, March 31, 2021	907		4,476		903,105		(186,071)		722,417
Net income	—		—		20,742		—		20,742
Dividends on common stock, $0.02 per share	—		—		(1,598)		—		(1,598)
Stock-based compensation, net of tax	—		55		—		150		205
Balance, June 30, 2021	907		4,531		922,249		(185,921)		741,766
Net income	—		—		24,466		—		24,466
Repurchases of common stock	—		—		—		(16,400)		(16,400)
Dividends on common stock, $0.52 per share	—		—		(41,095)		—		(41,095)
Stock-based compensation, net of tax	—		(212)		—		291		79
Balance, September 30, 2021	$	907	$	4,319	$	905,620	$	(202,030)	$	708,816
	Capital		Additional
	Stock,		Paid-In		Retained		Treasury
	Common		Capital		Earnings		Stock		Total
Balance, December 31, 2019	$	907	$	4,141	$	826,666	$	(147,055)	$	684,659
Net income	—		—		13,238		—		13,238
Dividends on common stock, $0.02 per share	—		—		(1,628)		—		(1,628)
Repurchases of common stock	—		—		—		(12,278)		(12,278)
Stock-based compensation, net of tax	—		291		—		406		697
Balance, March 31, 2020	907		4,432		838,276		(158,927)		684,688
Net income	—		—		19,182		—		19,182
Dividends on common stock, $0.02 per share	—		—		(1,628)		—		(1,628)
Stock-based compensation, net of tax	—		174		—		199		373
Balance, June 30, 2020	907		4,606		855,830		(158,728)		702,615
Net income	—		—		20,714		—		20,714
Dividends on common stock, $0.02 per share	—		—		(1,628)		—		(1,628)
Stock-based compensation, net of tax	—		(208)		—		216		8
Balance, September 30, 2020	$	907	$	4,398	$	874,916	$	(158,512)	$	721,709

The accompanying notes are an integral part of these consolidated financial statements.

5

HEARTLAND EXPRESS, INC.
AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(in thousands)
(unaudited)
	Nine Months Ended   September 30,
	2021		2020
OPERATING ACTIVITIES
Net income	$	58,942	$	53,134
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	78,286		81,786
Deferred income taxes	(8,623)		9,256
Stock-based compensation expense	959		1,509
Gain on disposal of property and equipment	(27,341)		(8,739)
Changes in certain working capital items:
Trade receivables	(2,961)		(5,785)
Prepaid expenses and other current assets	3,041		(6,645)
Accounts payable, accrued liabilities, and accrued expenses	(9,231)		5,101
Accrued income taxes	2,622		3,370
Net cash provided by operating activities	95,694		132,987
INVESTING ACTIVITIES
Proceeds from sale of property and equipment	98,421		51,473
Purchases of property and equipment	(93,213)		(163,824)
Change in other assets	(181)		72
Net cash provided by (used in) investing activities	5,027		(112,279)
FINANCING ACTIVITIES
Payment of cash dividends	(3,198)		(4,884)
Shares withheld for employee taxes related to stock-based compensation	(190)		(431)
Repurchases of common stock	(31,422)		(12,278)
Net cash used in financing activities	(34,810)		(17,593)
Net increase in cash, cash equivalents and restricted cash	65,911		3,115
CASH, CASH EQUIVALENTS AND RESTRICTED CASH
Beginning of period	131,140		96,076
End of period	$	197,051	$	99,191
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid during the period for income taxes, net of refunds	$	26,455	$	4,598
Noncash investing and financing activities:
Purchased property and equipment in accounts payable	$	3,258	$	12,114
Sold revenue equipment and property in other current assets	$	1,423	$	5,195
Common stock dividends declared in accounts payable	$	41,095	$	—
RECONCILIATION OF CASH, CASH EQUIVALENTS AND RESTRICTED CASH
Cash and cash equivalents	$	180,366	$	81,949
Restricted cash included in other current assets	932		1,097
Restricted cash included in other assets	15,753		16,145
Total cash, cash equivalents and restricted cash	$	197,051	$	99,191

The accompanying notes are an integral part of these consolidated financial statements.

6

HEARTLAND EXPRESS, INC.

AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

Note 1.  Basis of Presentation and New Accounting Pronouncements

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 ("Millis Transfer"). We, together with our subsidiaries, are a short-to-medium haul truckload carrier (predominately 500 miles or less per load). We primarily provide nationwide asset-based dry van truckload service for major shippers across the United States.

The accompanying consolidated financial statements include the parent company, Heartland Express, Inc., and its subsidiaries, all of which are wholly owned. All material intercompany items and transactions have been eliminated in consolidation. The accompanying unaudited consolidated financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and with the instructions to Form 10-Q and Regulation S-X. Accordingly, they do not include all of the information and notes to the financial statements required by U.S. GAAP for complete financial statements. In the opinion of management, all normal, recurring adjustments considered necessary for a fair presentation have been included. The consolidated financial statements should be read in conjunction with the audited consolidated financial statements and accompanying notes for the year ended December 31, 2020 included in the Annual Report on Form 10-K the Company filed with the Securities and Exchange Commission (the "SEC") on February 22, 2021. Interim results of operations are not necessarily indicative of the results to be expected for the full year or any other interim periods. There were no changes to the Company's significant accounting policies during the three and nine months ended September 30, 2021.

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): "Simplifying the Accounting for Income Taxes". The ASU simplifies the accounting for income taxes by removing certain exceptions to the general principles in Topic 740. The ASU also clarifies and amends existing guidance to improve consistent application among reporting entities. This ASU is effective for fiscal years beginning after December 15, 2020, including interim periods within that reporting period. We have adopted the guidance effective January 1, 2021 and the impact was immaterial to our financial statements.

Note 2.  Use of Estimates

The preparation of the consolidated financial statements in conformity with 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. There were no significant changes in estimates and assumptions used by management related to our critical accounting policies during the three and nine months ended September 30, 2021.

Note 3. Segment Information

We provide truckload services across the United States (U.S.) and parts of Canada. These truckload services are primarily asset-based transportation services in the dry van truckload market, and we also offer truckload temperature-controlled transportation services to select dedicated customers, which are not significant to our operations. Our Chief Operating Decision Maker (“CODM”) oversees and manages all of our transportation services, on a combined basis, including previously acquired entities. As a result of the foregoing, we have determined that we have one segment, consistent with the authoritative accounting guidance on disclosures about segments of an enterprise and related information.

Note 4. Revenue Recognition

The Company recognizes revenue over time as control of the promised services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those services. The delivery of the shipment and completion of the performance obligation allows for the collection of payment generally within 30 days after the delivery date of the shipment for the majority of our customers.

The Company's operations are consistent with those in the trucking industry where freight is hauled twenty-four hours a day and seven days a week, subject to hours of service rules. The Company’s average length of haul is 400-500 miles per trip and

7

each individual shipment accepted by the Company is considered a separate contract with the performance obligation being the delivery of the freight. Our average length of haul for each load of freight generally equals less than one day of continuous transit time. The Company estimates revenue for multiple-stop loads based on miles run and estimates revenue for single stop loads based on transit time, as the customer simultaneously receives and consumes the benefit provided. The Company hauls freight and earns revenue on a consistent basis throughout the periods presented. A corresponding contract asset existed for the estimated revenue of these in-process loads for $1.2 million and $1.1 million at September 30, 2021 and December 31, 2020, respectively. Recorded contract assets are included in the accounts receivable line item of the balance sheet. Corresponding liabilities are recorded in the accounts payable and accrued liabilities and compensation and benefits line items for the estimated expenses on these same in-process loads. The Company had no contract liabilities associated with our operations as of September 30, 2021 and December 31, 2020, respectively.

Total revenues recorded were $152.6 million and $162.3 million for the three months ended September 30, 2021 and 2020, respectively. Fuel surcharge revenues were $19.6 million and $14.4 million for the three months ended September 30, 2021 and 2020, respectively. Accessorial and other revenues recorded in the consolidated statements of comprehensive income collectively represented $2.7 million and $3.6 million for the three months ended September 30, 2021 and 2020, respectively.

Total revenues recorded were $459.1 million and $489.5 million for the nine months ended September 30, 2021 and 2020, respectively. Fuel surcharge revenues were $55.5 million and $47.9 million for the nine months ended September 30, 2021 and 2020, respectively. Accessorial and other revenues recorded in the consolidated statements of comprehensive income collectively represented $8.6 million and $10.5 million for the nine months ended September 30, 2021 and 2020, respectively.

Note 5. Cash and Cash Equivalents

Cash equivalents are short-term, highly liquid investments with insignificant interest rate risk and original maturities of three months or less at acquisition. At September 30, 2021, restricted and designated cash and investments totaled $16.7 million, of which $0.9 million was included in other current assets and $15.8 million was included in other non-current assets in the consolidated balance sheet. Restricted and designated cash and investments totaled $17.3 million at December 31, 2020, of which $1.1 million was included in other current assets and $16.2 million was included in other non-current assets in the consolidated balance sheet. The restricted funds represent deposits required by state agencies for self-insurance purposes and designated funds that are earmarked for a specific purpose and not for general business use.

Note 6. Prepaid Tires, Property, Equipment, and Depreciation

Property and equipment are reported at cost, net of accumulated depreciation. Maintenance and repairs are charged to operations as incurred. New tires are capitalized separately from revenue equipment and are reported separately as “Prepaid tires” in the consolidated balance sheets and amortized over two years. Depreciation for financial statement purposes is computed by the straight-line method for all assets other than tractors. We recognize depreciation expense on new tractors (excludes assets acquired in an acquisition) using the 125% declining balance method. Revenue equipment acquired through acquisitions is generally revalued to current market values as of the acquisition date. These acquired assets are depreciated on a straight-line basis aligned with the remaining period of expected use. As acquired equipment is replaced, our fleet returns to our base methods of declining balance depreciation for tractors and straight-line depreciation for trailers. New tractors are depreciated to salvage values of $15,000 while new trailers are depreciated to salvage values of $4,000. At September 30, 2021, there was $1.4 million amounts receivable related to equipment sales recorded in other current assets compared to $3.4 million at December 31, 2020.

Note 7. Other Intangibles, Net and Goodwill

All intangible assets determined to have finite lives are amortized over their estimated useful lives. The useful life of an intangible asset is the period over which the asset is expected to contribute directly or indirectly to future cash flows. There was no change in the gross amount of identifiable intangible assets during the three and nine months ended September 30, 2021. Amortization expense of $0.6 million and $0.6 million for the three months ended September 30, 2021 and 2020, respectively, was included in depreciation and amortization in the consolidated statements of comprehensive income. Amortization expense of $1.8 million and $1.8 million for the nine months ended September 30, 2021 and 2020, respectively, was included in depreciation and amortization in the consolidated statements of comprehensive income. Intangible assets subject to amortization consisted of the following at September 30, 2021:

8

	Amortization period (years)	Gross Amount		Accumulated Amortization		Net intangible assets
		(in thousands)
Customer relationships	15-20	$	23,000	$	5,514	$	17,486
Tradename	0.5-6	12,900		9,100		3,800
Covenants not to compete	1-10	5,300		3,633		1,667
		$	41,200	$	18,247	$	22,953

The carrying amount of goodwill was $168.3 million at September 30, 2021 and December 31, 2020, respectively.

Note 8. Earnings per Share

Basic earnings per share is based upon the weighted average common shares outstanding during each year. Diluted earnings per share is based on the basic weighted earnings per share with additional weighted common shares for common stock equivalents. During the three and nine months ended September 30, 2021 and September 30, 2020, we had outstanding restricted shares of common stock to certain of our employees under the Company's 2011 Restricted Stock Award Plan (the "2011 Plan"). We had no outstanding restricted shares of common stock under the Company's 2021 Restricted Stock Award Plan (the "2021 Plan"). A reconciliation of the numerator (net income) and denominator (weighted average number of shares outstanding of the basic and diluted earnings per share ("EPS")) for the three and nine months ended September 30, 2021 and September 30, 2020 is as follows (in thousands, except per share data):

	Three months ended September 30, 2021
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	24,466	79,336	$	0.31
Effect of restricted stock	—		28
Diluted EPS	$	24,466	79,364	$	0.31

	Three months ended September 30, 2020
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	20,714	81,370	$	0.25
Effect of restricted stock	—		34
Diluted EPS	$	20,714	81,404	$	0.25

	Nine months ended September 30, 2021
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	58,942	79,795	$	0.74
Effect of restricted stock	—		44
Diluted EPS	$	58,942	79,839	$	0.74

	Nine months ended September 30, 2020
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	53,134	81,530	$	0.65
Effect of restricted stock	—		57
Diluted EPS	$	53,134	81,587	$	0.65

9

Note 9. Equity

We have a stock repurchase program with 6.7 million shares remaining authorized for repurchase as of September 30, 2021 following the additional authorization of 3.0 million shares by our Board of Directors on August 20, 2021. There were 1.0 million shares repurchased in the open market for $16.4 million during the three months ended September 30, 2021 and there were no shares repurchased in the open market during the three months ended September 30, 2020. There were 1.8 million shares repurchased in the open market for $30.9 million during the nine months ended September 30, 2021 and there were 0.7 million repurchased in the open market for $12.3 million during the nine months ended September 30, 2020. Repurchases are expected to continue from time to time, as determined by market conditions, cash flow requirements, securities law limitations, and other factors, until the number of shares authorized have been repurchased, or until the authorization is terminated. The share repurchase authorization is discretionary and has no expiration date.

During the three months ended September 30, 2021 and 2020, our Board of Directors declared dividends totaling $41.1 million and $1.6 million, respectively. The three months ended September 30, 2021 included a $0.50 per share special dividend totaling $39.5 million and the regular quarterly dividend totaling $1.6 million, while the 2020 dividend was a regular quarterly dividend. During the nine months ended September 30, 2021 and 2020, our Board of Directors declared dividends totaling $44.3 million and $4.9 million, respectively. The nine months ended September 30, 2021 included a $0.50 per share special dividend totaling $39.5 million and regular quarterly dividends totaling $4.8 million, while the 2020 dividends were regular quarterly dividends. Future payment of cash dividends and the amount of such dividends will depend upon our financial conditions, our results of operations, our cash requirements, tax treatment, and certain corporate law requirements, as well as factors deemed relevant by our Board of Directors.

Note 10. Stock-Based Compensation

In July 2011, a Special Meeting of Stockholders of Heartland Express, Inc. was held, at which meeting the approval of the Heartland Express, Inc. 2011 Restricted Stock Award Plan (the "2011 Plan") was ratified. The 2011 Plan made available up to 0.9 million shares for the purpose of making restricted stock grants to our eligible officers and employees. There were no shares that were issued during the period 2011 to 2018 that remain unvested at September 30, 2021. Shares granted in 2019 through 2021 have various vesting terms that range from immediate to four years from the date of grant. Compensation expense associated with these awards is based on the market value of our stock on the grant date. Compensation expense associated with restricted stock awards is included in salaries, wages and benefits in the consolidated statements of comprehensive income. There were no significant assumptions made in determining fair value. Compensation expense associated with restricted stock awards was $0.2 million and $1.0 million respectively, for the three and nine months ended September 30, 2021. Compensation expense associated with restricted stock awards was $0.2 million and $1.5 million respectively, for the three and nine months ended September 30, 2020. Unrecognized compensation expense was $0.2 million at September 30, 2021 which will be recognized over a weighted average period of 0.8 years.

In May 2021, at the 2021 Annual Meeting of Stockholders, the approval of the Heartland Express, Inc. 2021 Restricted Stock Award Plan (the “2021 Plan”) was ratified. The 2021 Plan made available up to 0.6 million shares for the purpose of making restricted stock grants to our eligible employees, directors and consultants. No shares from the 2021 Plan have been granted as of September 30, 2021.

The following tables summarize our restricted stock award activity for the three and nine months ended September 30, 2021 and 2020.

	Three Months Ended September 30, 2021
	Number of Shares of Restricted Stock Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested at beginning of period	44.2	$	19.83
Granted	5.0	16.79
Vested	(21.5)	18.82
Forfeited	—	—
Outstanding (unvested) at end of period	27.7	$	20.07

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	Three Months Ended September 30, 2020
	Number of Shares of Restricted Stock Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested at beginning of period	59.3	$	20.87
Granted	—	—
Vested	(21.1)	20.64
Forfeited	—	—
Outstanding (unvested) at end of period	38.2	$	20.99

	Nine Months Ended September 30, 2021
	Number of Shares of Restricted Stock Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested at beginning of period	59.7	$	20.29
Granted	24.3	18.29
Vested	(56.3)	19.54
Forfeited	—	—
Outstanding (unvested) at end of period	27.7	$	20.07

	Nine Months Ended September 30, 2020
	Number of Shares of Restricted Stock Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested at beginning of period	52.1	$	20.55
Granted	60.2	20.84
Vested	(73.6)	20.59
Forfeited	(0.5)	19.32
Outstanding (unvested) at end of period	38.2	$	20.99

Note 11.  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”). Pursuant to the Credit Agreement, the Bank provided a five-year, $250.0 million unsecured revolving line of credit which may be used for future working capital, equipment financing, and general corporate purposes. The Bank's original commitment decreased to $175.0 million on November 1, 2016 through scheduled maturity on October 31, 2018. However, on August 31, 2018, the Borrower and the Bank entered into the First Amendment to this Credit Agreement. The First Amendment (i) provided for a $100.0 million unsecured revolving line of credit (the “Revolver”), which may be used for working capital, equipment financing, permitted acquisitions, and general corporate purposes, (ii) provided an uncommitted accordion feature, which allowed 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) increased the letter of credit subfeature of the Credit Agreement from $20.0 million to $30.0 million, and (iv) extended the maturity of the Credit Agreement to August 31, 2021, subject to the Borrower’s ability to terminate the commitment at any time at no additional cost to the Borrower.

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

11

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, conditions, representations and warranties, and indemnification provisions. We were in compliance with the respective financial covenants at September 30, 2021 and during the three and nine months then ended.

We had no outstanding debt at September 30, 2021 and December 31, 2020, respectively. Outstanding letters of credit associated with the revolving line of credit at September 30, 2021 were $10.8 million. As of September 30, 2021, the line of credit available for future borrowing was $14.2 million.

Note 12.  Income Taxes

We use the asset and liability method of accounting for income taxes. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to temporary differences between the financial statement carrying amount of existing assets and liabilities and their respective tax basis. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. Such amounts are adjusted, as appropriate, to reflect changes in tax rates expected to be in effect when temporary differences reverse. The effect of changes in tax rates on deferred taxes is recognized in the period that the change is enacted. A valuation allowance is recorded to reduce the Company's deferred tax assets to the amount that is more likely than not to be realized. We had no recorded valuation allowance at September 30, 2021 and December 31, 2020. Our effective tax rate was 26.9% and 24.7% for the three months ended September 30, 2021 and 2020, respectively. The increase in the effective tax rate is due to non-recurring favorable adjustments for Interpretation 48 of Financial Accounting Standard 109 ("FIN 48") recognized in 2020 and favorable return adjustments associated with returns filed July of 2020 due to COVID-19 legislation. Our effective tax rate was 25.8% and 24.5% for the nine months ended September 30, 2021 and 2020, respectively. The increase in the effective tax rate is due to non-recurring favorable adjustments realized in 2020.

We recognize the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. We record interest and penalties related to unrecognized tax benefits in income tax expense.

At September 30, 2021 and December 31, 2020, we had a total of $4.6 million and $4.9 million in gross unrecognized tax benefits, respectively included in long-term income taxes payable in the consolidated balance sheet. Of this amount, $3.6 million and $3.9 million represents the amount of unrecognized tax benefits that, if recognized, would impact our effective tax rate as of September 30, 2021 and December 31, 2020. The net change in unrecognized tax benefits was zero and a decrease of $0.2 million during the three months ended September 30, 2021 and September 30, 2020, respectively. The net decrease in unrecognized tax benefits was due to settlements with corresponding reductions to uncertain tax liabilities occurring in the three months ended September 30, 2020. The net change in unrecognized tax benefits was a decrease of $0.3 million during the nine months ended September 30, 2021 and 2020, respectively. The net decrease in unrecognized tax benefits during the nine months ended September 30, 2021 and 2020 was mainly due to the expiration of certain statutes of limitations net of additions and adjustments to actual positions on returns filed for prior year. The total net amount of accrued interest and penalties for such unrecognized tax benefits was $0.8 million and $0.9 million at September 30, 2021 and December 31, 2020, respectively and is included in long-term income taxes payable in the consolidated balance sheets. Income tax expense is increased each period for the accrual of interest on outstanding positions and penalties when the uncertain tax position is initially recorded. Income tax expense is reduced in periods by the amount of accrued interest and penalties associated with reversed uncertain tax positions due to lapse of applicable statute of limitations, when applicable or when a position is settled.

Net interest and penalties included in income tax expense for the three month period ended September 30, 2021 and September 30, 2020 was a net expense of approximately $0.1 million and zero, respectively. Net interest and penalties included in income tax expense for the nine month period ended September 30, 2021 and September 30, 2020 was a net benefit of

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approximately $0.1 million and $0.1 million, respectively. The favorable impact to income tax expense was due to reversals of interest and penalties due to lapse of applicable statute of limitations and settlements, net of additions for interest and penalty accruals during the same period. These unrecognized tax benefits relate to risks associated with state income tax filing positions for our corporate subsidiaries.

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:

	2021
	(in thousands)
Balance at January 1, 2021	$	4,937
Additions based on tax positions related to current year	372
Reductions for tax positions of prior years	(179)
Reductions due to lapse of applicable statute of limitations	(533)
Balance at September 30, 2021	$	4,597

A number of years may elapse before an uncertain tax position is audited and ultimately settled. It is difficult to predict the ultimate outcome or the timing of resolution for uncertain tax positions. It is reasonably possible that the amount of unrecognized tax benefits could significantly increase or decrease within the next twelve months. These changes could result from the expiration of the statute of limitations, examinations or other unforeseen circumstances. We do not have any outstanding litigation related to income tax matters. At this time, management’s best estimate of the reasonably possible change in the amount of gross unrecognized tax benefits is approximately no change to an increase of $1.0 million during the next twelve months, due to the combination of expiration of certain statute of limitations and estimated additions.  The federal statute of limitations remains open for the years 2018 and forward. Tax years 2011 and forward are subject to audit by state tax authorities depending on the tax code and administrative practice of each state.

Note 13.  Commitments and Contingencies

We are a party to ordinary, routine litigation and administrative proceedings incidental to our business. In the opinion of management, our potential exposure under pending legal proceedings is adequately provided for in the accompanying consolidated financial statements.  

The total estimated purchase commitments for tractors (net of tractor sale commitments) and trailer equipment as of September 30, 2021 was $42.9 million. These commitments extend through the remainder of 2021 and into 2022.

Note 14.  Subsequent Events

No events occurred requiring disclosure other than the repurchase of 37,759 shares of our common stock for $0.6 million subsequent to September 30, 2021.

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ITEM 2.       MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS

OF OPERATIONS

This Item 2 contains certain statements that may be considered forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, and such statements are subject to the safe harbor created by such sections and the Private Securities Litigation Reform Act of 1995, as amended. All statements, other than statements of historical fact, are statements that could be deemed forward-looking statements, including without limitation: any projections of earnings, revenues, or other financial items; any statement of plans, strategies, and objectives of management for future operations; any statements concerning proposed new services or developments; any statements regarding future economic conditions or performance; and any statements of belief and any statement of assumptions underlying any of the foregoing. Such statements may be identified by their use of terms or phrases such as “seek,” “expects,” “estimates,” “anticipates,” “projects,” “believes,” “hopes,” “plans,” “goals,” “intends,” “may,” “might,” “likely,” “will,” “should,” “would,” “could,” “potential,” “predict,” “continue,” “strategy,” “future,” “outlook,” and similar terms and phrases. Forward-looking statements are based on currently available operating, financial, and competitive information. In this Form 10-Q, statements relating to general trucking industry trends, including future demand and capacity, freight rates, operating ratio goals, anticipated revenue equipment sales and purchases, including revenue equipment gains, the used equipment market, and the availability of revenue equipment, future customer relationships, future growth and acquisitions, our ability to attract and retain drivers, future driver compensation, including possible driver compensation increases, future insurance and claims expense, the impact of changes in interest rates and tire prices, future liquidity, expected fuel costs, including strategies for managing fuel costs, the impact of pending litigation, our dividend policy, capital spending, including our mix of leased versus owned revenue equipment, future depreciation expense, our future repurchases of our shares, the anticipated impact of the COVID-19 pandemic, including any related vaccination mandate, reducing unnecessary or unproductive costs, and our ability to react to changing market conditions, among others, are forward-looking statements. Forward-looking statements are inherently subject to risks and uncertainties, some of which cannot be predicted or quantified, which could cause future events and actual results to differ materially from those set forth in, contemplated by, or underlying the forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, those discussed in the sections entitled "Item 1A. Risk Factors," set forth in this Form 10-Q and in the Company's 2020 Annual Report on Form 10-K, filed with the Securities and Exchange Commission on February 22, 2021. Readers should review and consider such factors, along with various disclosures in our press releases, stockholder reports, and other filings with the Securities and Exchange Commission.

All such forward-looking statements speak only as of the date of this Quarterly Report. You are cautioned not to place undue reliance on such forward-looking statements. The Company expressly disclaims any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements contained herein to reflect any change in the Company's expectations with regard thereto or any change in the events, conditions, or circumstances on which any such statement is based.

References in this Quarterly Report to “we,” “us,” “our,” “Heartland,” or the “Company” or similar terms refer to Heartland Express, Inc. and its subsidiaries.

Overview

We, together with our subsidiaries, are a short-to-medium haul truckload carrier (predominately 500 miles or less per load). We primarily provide nationwide asset-based dry van truckload service for major shippers from Washington to Florida and New England to California. Approximately 99.9% of our operating revenue is derived from shipments within the United States with the remainder being Canada. We do not have any operations in Mexico. We focus on providing quality service to targeted customers with a high density of freight in our regional operating areas. We also offer temperature-controlled truckload services, which are not significant to our operations, serving select dedicated customers. We generally earn revenue based on the number of miles per load delivered and the revenue per mile paid. We operate our consolidated operations under the brand names of Heartland Express and Millis Transfer. We manage our business based on overall corporate operating goals and objectives that are the same for both brands. Our Chief Operating Decision Maker (“CODM”), our CEO, evaluates the operational efficiencies of our transportation services, operating performance and asset allocation on a combined basis based on consolidated operating goals and objectives. We believe the keys to success are maintaining high levels of customer service and safety, which are predicated on the availability of experienced drivers and late-model equipment. We believe that our service standards, safety record, and equipment accessibility have made us a core carrier to many of our major customers, as well as allowed us to build solid, long-term relationships with customers and brand ourselves as an industry leader for on-time service.

We operate in a cyclical industry. During 2020, the demand for freight services was volatile. Freight volumes in early 2020 were comparative to seasonal volumes of the first quarter of 2019. Then in March 2020 the demand for freight services dramatically increased as concerns over the COVID-19 pandemic escalated. In response to the outbreak of COVID-19, there

14

was a short term drop in the demand for freight services in early second quarter of 2020, due to many businesses temporarily shutting down or scaling back operations with much of the working population of the United States working from home. By the end of the second quarter of 2020, demand for freight services began to improve as most businesses implemented their respective responses and protections against the pandemic which continued to build throughout the back half of 2020 and into 2021. This led to an overall increase in freight demand and a favorable pricing environment as freight rates increased throughout the second half of 2020 and have continued to be strong through the first nine months of 2021. We expect freight demand to continue to be strong through the remainder of 2021 and well into 2022.

We continue to focus on providing quality service to targeted customers with a high density of freight in our regional operating areas. Organic growth has become increasingly difficult for traditional over-the-road truckload services given a shortage of qualified drivers in the industry. We continue to evaluate and explore different driving options and offerings for our existing and potential new drivers.

In addition to past organic growth through the development of our regional operating areas, we have completed eight acquisitions since 1986 with the most recent and our third acquisition within the last eight years, Millis Transfer, occurring on August 26, 2019. These eight acquisitions have enabled us to solidify our position within existing regions, expand into new operating regions, and pursue new customer relationships in new markets. We are highly selective about acquisitions, with our main criteria being (i) safe operations, (ii) high quality professional truck drivers, (iii) fleet profile that is compatible with our philosophy or can be replaced economically, and (iv) freight profile that will allow a path to a low-80s operating ratio upon full integration, application of our cost structure, and freight optimization, including exiting certain loads that fail to meet our operating profile. We expect to continue to evaluate acquisition candidates presented to us. We believe future growth depends upon several factors including the level of economic growth and the related customer demand, the available capacity in the trucking industry, our ability to identify and consummate future acquisitions, our ability to integrate operations of acquired companies to realize efficiencies, and our ability to attract and retain experienced drivers that meet our hiring standards.

The trucking industry has been faced with a qualified driver shortage. The pandemic events of 2020 intensified an already challenging qualified driver market. Competition for drivers, which has historically been intense, escalates during periods of increased freight demand which intensified during the second half of 2020 and has continued to date in 2021. Competition for qualified drivers will continue to be challenging going forward due to the decreasing numbers of qualified drivers in our industry. We continually explore new strategies to attract and retain qualified drivers with changes in market conditions and demands. We hire the majority of our drivers with at least six months of over-the-road experience and safe driving records. As discussed below, Millis Transfer's driver training program provides an additional source of future potential professional drivers. In order to attract and retain experienced drivers who understand the importance of customer service, we have sought to solidify our position as an industry leader in driver compensation in our operating markets. We have increased wages and enhanced the compensation for our drivers multiple times in the last twelve months. Further, we have continued to get more creative in providing better pay, benefits, equipment, and facilities for our drivers. Our comprehensive driver compensation and benefits program rewards drivers for years of service and safe operating mileage benchmarks, which are critical to our operational and financial performance. Our driver pay package includes minimum pay protection provisions, future pay increases based on years of continued service with us, increased rates for accident-free miles of operation, detention pay, and other pay programs to assist drivers with unproductive time. We believe that our driver compensation and benefits package is consistently among the best in the industry. We are committed to investing in our drivers and compensating them for safety as both are key to our operational and financial performance.

Millis Transfer has operated a driver training school program for over 20 years and through this program, potential drivers are taught the driving skills and core safety procedures required to obtain a commercial drivers license. We opened our first joint driver training school at a legacy Heartland Express terminal in Carlisle, PA during the third quarter of 2021. The driver training school program offers an additional opportunity to hire professional drivers other than the traditional approach of hiring only experienced over-the-road drivers. The Company is currently evaluating the expansion of driver training schools in other areas.

As one of our highest expense categories, managing fuel cost continues to be one of management's top priorities. Average prices for diesel fuel have steadily increased since late 2020. Average DOE diesel fuel prices per gallon for the three months ended September 30, 2021 and 2020 were $3.36 and $2.43 (a 38% increase), respectively. As the pandemic events of 2020 became widespread, the demand and price for diesel fuel declined initially during the second quarter of 2020. The average DOE diesel fuel price from April 1, 2020 to December 31, 2020 was $2.44. The 2021 average price per gallon through October 25, 2021, was $3.20. Average price of diesel fuel has risen $0.31 or 9% since September 30, 2021 through the end of October 2021. We cannot predict what fuel prices will be for the remainder of 2021. We are not able to pass through all fuel price increases through fuel surcharge agreements with customers due to tractor idling time, along with empty and out-of-route miles. Therefore, our operating income is negatively impacted with increased net fuel costs (fuel expense less fuel surcharge revenue)

15

in a rising fuel environment and is positively impacted in a declining fuel environment. We continue to implement fuel initiative strategies that we believe will effectively manage fuel costs. These initiatives include strategic fueling of our trucks, whether it be terminal fuel or over-the-road fuel, bulk fuel purchases, controlling out-of-route miles, controlling empty miles, utilizing idle management programming and battery power units to minimize idling, educating drivers to save energy, trailer skirting and rear fairings, and increasing fuel economy through the purchase of newer, more fuel-efficient tractors. At September 30, 2021, the Company’s tractor fleet had an average age of 1.7 years and the Company's trailer fleet had an average age of 3.3 years.

We ended the first nine months of 2021 with operating revenues of $459.1 million, including fuel surcharges, net income of $58.9 million, and basic net income per share of $0.74 on basic weighted average outstanding shares of 79.8 million compared to operating revenues of $489.5 million, including fuel surcharges, net income of $53.1 million, and basic net income per share of $0.65 on basic weighted average shares of 81.5 million in the first nine months of 2020. We posted an 82.8% operating ratio (operating expenses as a percentage of operating revenues) for the nine months ended September 30, 2021 compared to 85.8% for the same period of 2020. We posted a 80.5% non-GAAP adjusted operating ratio(1) (operating expenses as a percentage of operating revenues, net of fuel surcharge) for the nine months ended September 30, 2021 compared to 84.2% for the same period of 2020. We had total assets of $958.3 million at September 30, 2021. We achieved a return on assets of 8.0% and a return on equity of 10.6% over the immediate past four quarters ended September 30, 2021, compared to 7.1% and 9.4%, respectively, for the immediate past four quarters ended September 30, 2020.

Our cash flow from operating activities for the nine months ended September 30, 2021 of $95.7 million was 20.8% of operating revenues, compared to $133.0 million and 27.2% in the same period of 2020. During 2021, we had net cash provided by investing activities of $5.0 million, which was the result of net proceeds from revenue equipment transactions exceeding other property transactions. We used $34.8 million in financing activities primarily related to the repurchase of stock ($31.4 million) and the payment of dividends ($3.2 million). As a result, our cash, cash equivalents and restricted cash increased $65.9 million during the nine months ended September 30, 2021. We ended the third quarter of 2021 with cash, cash equivalents and restricted cash of $197.1 million. Cash and cash equivalents, excluding restricted cash was $180.4 million at September 30, 2021. Dividends of $41.1 million (including a special dividend of $39.5 million) were paid on October 1, 2021 significantly reducing our cash balance.

(1)

GAAP to Non-GAAP Reconciliation Schedule:
Operating revenue, operating revenue excluding fuel surcharge revenue, fuel surcharge revenue, operating income, operating ratio, and adjusted operating ratio reconciliation (a)
	Three months ended September 30,						Nine months ended September 30,
	2021			2020			2021			2020
	(Unaudited, in thousands)						(Unaudited, in thousands)
Operating revenue	$	152,612		$	162,282		$	459,142		$	489,473
Less: Fuel surcharge revenue	19,628			14,412			55,544			47,858
Operating revenue, excluding fuel surcharge revenue	132,984			147,870			403,598			441,615
Operating expenses	119,339			134,943			380,239			419,819
Less: Fuel surcharge revenue	19,628			14,412			55,544			47,858
Adjusted operating expenses	99,711			120,531			324,695			371,961
Operating income	$	33,273		$	27,339		$	78,903		$	69,654
Operating ratio	78.2		%	83.2		%	82.8		%	85.8		%
Adjusted operating ratio	75.0		%	81.5		%	80.5		%	84.2		%

(a) Adjusted operating ratio as reported in this Form 10-Q is based upon operating expenses, net of fuel surcharge revenue, as a percentage of operating revenue excluding fuel surcharge revenue. We believe that adjusted operating ratio is more representative of our underlying operations by excluding the volatility of fuel prices, which we cannot control. Adjusted

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operating ratio is not a substitute for operating ratio measured in accordance with GAAP. There are limitations to using non-GAAP financial measures. Although we believe that adjusted operating ratio improves comparability in analyzing our period-to-period performance, it could limit comparability to other companies in our industry if those companies define adjusted operating ratio differently. Because of these limitations, adjusted operating ratio should not be considered a measure of income generated by our business or discretionary cash available to us to invest in the growth of our business. Management compensates for these limitations by primarily relying on GAAP results and using non-GAAP financial measures on a supplemental basis.

Results of Operations

The following table sets forth the percentage relationships of expense items to total operating revenue for the periods indicated:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Operating revenue	100.0	%	100.0	%	100.0	%	100.0	%
Operating expenses:
Salaries, wages, and benefits	41.1	%	41.4	%	41.5	%	42.0	%
Rent and purchased transportation	0.6	%	0.6	%	0.6	%	0.7	%
Fuel	16.6	%	13.1	%	16.2	%	13.4	%
Operations and maintenance	3.5	%	4.4	%	3.6	%	4.4	%
Operating taxes and licenses	2.2	%	2.3	%	2.2	%	2.3	%
Insurance and claims	3.3	%	3.0	%	3.3	%	3.3	%
Communications and utilities	0.8	%	0.8	%	0.7	%	0.8	%
Depreciation and amortization	16.6	%	17.0	%	17.0	%	16.7	%
Other operating expenses	3.5	%	4.1	%	3.5	%	4.0	%
Gain on disposal of property and equipment	(10.0)	%	(3.5)	%	(6.0)	%	(1.8)	%
	78.2	%	83.2	%	82.8	%	85.8	%
Operating income	21.8	%	16.8	%	17.2	%	14.2	%
Interest income	0.1	%	0.1	%	0.1	%	0.2	%
Income before income taxes	21.9	%	16.9	%	17.3	%	14.4	%
Income taxes	5.9	%	4.1	%	4.5	%	3.5	%
Net income	16.0	%	12.8	%	12.8	%	10.9	%

Three Months Ended September 30, 2021 Compared With the Three Months Ended September 30, 2020

Our quarterly operating ratio was 78.2% and 75.0% non-GAAP adjusted operating ratio as compared to the prior year 83.2% and 81.5%. See the “GAAP to Non-GAAP Reconciliation Schedule” above for a reconciliation of our non-GAAP adjusted operating ratio. Our net income was $24.5 million for the three months ended September 30, 2021 and $20.7 million during the same period ended September 30, 2020, an increase of 18.1%. The improvement in operating ratio is primarily due to higher gains on sale of revenue equipment, partially offset by an increase in fuel expense as a percentage of revenue, during the three months ended September 30, 2021 compared to the same period in 2020. The increase in gains is primarily due to trade volume and pricing. The increase in fuel expense was primarily price driven. Consistent with past acquisitions, we continue to implement cost reduction and freight optimization strategies at Millis Transfer focused on improving the consolidated operating ratio.

Operating revenue decreased $9.7 million (6.0%), to $152.6 million for the three months ended September 30, 2021 from $162.3 million for the three months ended September 30, 2020. The decrease in revenue was the net result of a decrease in total miles, partially offset by an increase in freight rates causing a net decrease in trucking and other revenues of $14.9 million (10.1%). Offsetting this decrease was an increase to fuel surcharge revenue of $5.2 million (36.2%) from $14.4 million in 2020 to $19.6 million in 2021. Operating revenues (the total of trucking and fuel surcharge revenue) are primarily earned based on loaded miles driven in providing truckload services. Our operating revenues are reviewed regularly on a combined basis across the United States due to the similar nature of our services offerings and related similar base pricing structure. The number of loaded miles is affected by general freight supply and demand trends and the number of revenue earning equipment vehicles (tractors). The number of revenue earning equipment vehicles is directly affected by the number of available drivers providing

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capacity to us. The decrease in total miles was a result of the decreased number of drivers providing capacity. The increase in freight rates, earned on miles driven, was generally due to strong market conditions and demand for our freight services. Our operating revenues are reviewed regularly by our CODM on a combined basis across the U.S. due to the similar nature of our services offerings and related similar base pricing structure.

Fuel surcharge revenues represent fuel costs passed on to customers based on customer specific fuel surcharge recovery rates and billed loaded miles. Fuel surcharge revenues increased primarily as a result of higher average Department of Energy ("DOE") diesel fuel prices (38.4%) during the three months ended September 30, 2021 compared to September 30, 2020, as reported by the DOE.

Salaries, wages, and benefits decreased $4.5 million (6.6%), to $62.7 million for the three months ended September 30, 2021 from $67.2 million in the 2020 period. Salaries, wages, and benefits decreased primarily due to the decrease in the number of drivers and miles, partially offset by increased driver wages. We have increased wages and enhanced the compensation for our drivers multiple times in the last twelve months. Further, we have continued to get more creative in providing better pay, driving opportunities, benefits, equipment, and facilities for our drivers. We expect the qualified driver shortage within the trucking industry to continue to be a challenge in the foreseeable future.

Fuel increased $4.1 million (19.0%), to $25.3 million for the three months ended September 30, 2021 from $21.2 million for the same period of 2020. The increase was primarily due to higher average diesel price per gallon (38.4%) as reported by the DOE. Throughout the quarter ended September 2021, we were in a rising fuel price environment. For the comparable quarter of 2020, we were in a steady to declining fuel price environment. Throughout the third quarter of 2021, the average DOE price increased 2.3% and during the same period of 2020 decreased 1.8%. Subsequent to the end of the third quarter 2021 the DOE price of fuel increased 9%.

Depreciation and amortization decreased $2.3 million (8.5%), to $25.3 million during the three months ended September 30, 2021 from $27.6 million in the same period of 2020 as a result of ongoing fleet replacement strategies and reduction in depreciated units.

Operations and maintenance expense decreased $1.7 million (24.5%), to $5.4 million during the three months ended September 30, 2021 from $7.1 million in the same period of 2020. The decrease is mainly attributable to a reduction in miles driven partially offset by increased costs associated with an increase in equipment sales volume. As a result of production shortages and increased costs for new revenue equipment, our trade activity in 2022 is anticipated to be significantly below levels experienced in recent years. At September 30, 2021, the Company’s tractor fleet had an average age of 1.7 years and the Company's trailer fleet had an average age of 3.3 years. Given our average age of revenue equipment is in the top tier of our industry, we do not believe that extending our trade cycle in 2022 will significantly increase operations and maintenance expense compared to the rest of the industry.

Operating taxes and licenses expense decreased $0.4 million (9.6%), to $3.3 million during the three months ended September 30, 2021 from $3.7 million in 2020. The decrease was primarily due to decreased license and permitting costs attributable to a reduction of the fleet.

Insurance and claims expense increased $0.3 million (4.7%), to $5.1 million during the three months ended September 30, 2021 from $4.8 million in 2020. There was an increase in insurance premiums as compared to 2020. The overall cost to insure our revenue equipment, on a per unit basis, has increased year-over-year due to a lack of insurance capacity across the transportation industry mainly as a result of the current legal environment. We expect that insurance premiums will continue trending upward. In recent years we have modified our coverage to better match the benefit of insurance coverage received to the insurance premiums charged. We will continue this evaluation with our 2022 insurance renewal, which could result in a change to our coverage limits and insurance premium costs.

Other operating expenses decreased $1.2 million (18.4%), to $5.4 million, during the three months ended September 30, 2021 from $6.6 million in 2020. These decreases are due mainly to decreased variable costs associated with the reduction of revenue equipment units in our fleet.

Gains on the disposal of property and equipment increased $9.6 million, to a gain on disposal of $15.3 million during the three months ended September 30, 2021 from a $5.7 million gain on disposal in the same period of 2020. The increase was primarily due to a significant increase of equipment sales volume. We expect the used equipment market to be strong in 2022, although our participation may be limited by production shortages and increased costs for new revenue equipment to replace sold units.

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Our effective tax rate was 26.9% and 24.7% for the three months ended September 30, 2021 and 2020, respectively. The increase in the effective tax rate is due to non-recurring favorable adjustments for Interpretation 48 of Financial Accounting Standard 109 ("FIN 48") recognized in 2020 and favorable return adjustments associated with returns filed July of 2020 due to COVID-19 legislation.

Nine Months Ended September 30, 2021 Compared With the Nine Months Ended September 30, 2020

Our operating ratio for the nine months ended September 30, 2021 was 82.8% and 80.5% non-GAAP adjusted operating ratio as compared to the prior year 85.8% and 84.2%. See the “GAAP to Non-GAAP Reconciliation Schedule” above for a reconciliation of our non-GAAP adjusted operating ratio. Our net income was $58.9 million for the nine months ended September 30, 2021 and $53.1 million during the same period ended September 30, 2020, an increase of 10.9%. The improvement in operating ratio is primarily due to higher gains on sale of revenue equipment, partially offset by an increase in fuel expense as a percentage of revenue during the nine months ended September 30, 2021 compared to the same period in 2020. The increase in gains is primarily due to an increase in trade volume and pricing. The increase in fuel expense was primarily price driven. Consistent with past acquisitions, we continue to implement cost reduction and freight optimization strategies at Millis Transfer focused on improving the consolidated operating ratio.

Operating revenue decreased $30.4 million (6.2%), to $459.1 million for the nine months ended September 30, 2021 from $489.5 million for the nine months ended September 30, 2020. The decrease in revenue was the net result of a decrease in total miles, causing a decrease in trucking and other revenues of $38.0 million (8.6%), partially offset by an increase in freight rates causing a net decrease in trucking and other revenues. Offsetting this decrease was an increase to fuel surcharge revenue of $7.6 million (16.1%) from $47.9 million in 2020 to $55.5 million in 2021. Operating revenues (the total of trucking and fuel surcharge revenue) are primarily earned based on loaded miles driven in providing truckload services. Our operating revenues are reviewed regularly on a combined basis across the United States due to the similar nature of our services offerings and related similar base pricing structure. The number of loaded miles is affected by general freight supply and demand trends and the number of revenue earning equipment vehicles (tractors). The number of revenue earning equipment vehicles is directly affected by the number of available drivers providing capacity to us. The decrease in operating revenue was due to the net effect of lower miles driven as a result of the decreased number of drivers providing capacity which was partially offset by increased freight rates earned on miles driven. Also, extreme winter weather events affected the Company’s revenues during the month of February 2021, while at the same time we continued to pay our drivers during extended weather shut downs to protect their pay while we had them shut down for safety. Our operating revenues are reviewed regularly by our CODM on a combined basis across the U.S. due to the similar nature of our services offerings and related similar base pricing structure.

Fuel surcharge revenues represent fuel costs passed on to customers based on customer specific fuel surcharge recovery rates and billed loaded miles. Fuel surcharge revenues increased primarily as a result of higher average Department of Energy ("DOE") diesel fuel prices (22.5%) during the nine months ended September 30, 2021 compared to September 30, 2020, as reported by the DOE, partially offset by decreased miles driven.

Salaries, wages, and benefits decreased $15.2 million (7.4%), to $190.4 million for the nine months ended September 30, 2021 from $205.6 million in the 2020 period. Salaries, wages, and benefits decreased primarily due to the decrease in the number of drivers partially offset by increased driver wages. In response to current hiring and retention challenges in our industry we have increased wages and enhanced the compensation for our drivers multiple times in the last twelve months. Further, we have continued to get more creative in providing better pay, benefits, equipment, and facilities for our drivers. We expect the qualified driver shortage within the trucking industry to continue to be a challenge in the foreseeable future.

Rent and purchased transportation decreased $0.7 million, to $2.9 million for the nine months ended September 30, 2021 from $3.6 million in the comparable period of 2020. The decrease was attributable to a decrease in terminal rent costs resulting from a leased terminal property we acquired in 2020.

Fuel increased $8.8 million (13.4%), to $74.2 million for the nine months ended September 30, 2021 from $65.4 million for the same period of 2020. The increase was primarily due to higher average diesel price per gallon (22.5%) as reported by the DOE, partially offset by decreased miles driven. Throughout the nine months ended September 2021, we were in a rising fuel price environment for the period. For the comparable nine months of 2020, we were in a declining fuel price environment. Throughout the nine months ended September 30, 2021, the average DOE price increased 29.0% and during the same period of 2020 decreased 22.2%.

Depreciation and amortization decreased $3.2 million (4.0%), to $78.2 million during the nine months ended September 30, 2021 from $81.4 million in the same period of 2020 as a result of ongoing fleet replacement strategies.

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Operations and maintenance expense decreased $4.8 million (22.2%), to $16.7 million during the nine months ended September 30, 2021 from $21.5 million in the same period of 2020. The decrease is mainly attributable to a reduction in miles driven partially offset by increased costs associated with an increase in equipment sales volume. As a result of production shortages and increased costs for new revenue equipment, our trade activity in 2022 is anticipated to be significantly below levels experienced in recent years. At September 30, 2021, the Company’s tractor fleet had an average age of 1.7 years and the Company's trailer fleet had an average age of 3.3 years. Given our average age of revenue equipment is in the top tier of our industry, we do not believe that extending our trade cycle in 2022 will significantly increase operations and maintenance expense compared to the rest of the industry.

Operating taxes and licenses expense decreased $0.9 million (7.9%), to $10.3 million during the nine months ended September 30, 2021 from $11.2 million in 2020. The decrease was primarily due to decreased license and permitting costs attributable to a reduction of the fleet.

Insurance and claims expense decreased $0.8 million (5.4%), to $15.2 million during the nine months ended September 30, 2021 from $16.0 million in 2020. There was a decrease in severity and frequency of claims as well as a reduction in risk exposure resulting from less miles driven, partially offset by an increase in insurance premiums in 2021 compared to 2020. In addition, the overall cost to insure our revenue equipment, on a per unit basis, has increased year-over-year due to a lack of insurance capacity across the transportation industry mainly as a result of the current legal environment. We expect that insurance premiums will continue trending upward. In recent years we have modified our coverage to better match the benefit of insurance coverage received to the insurance premiums charged. We will continue this evaluation with our 2022 insurance renewal, which could result in a change to our coverage limits and insurance premium costs.

Other operating expenses decreased $3.4 million (17.5%), to $16.2 million, during the nine months ended September 30, 2021 from $19.6 million in 2020. These decreases are due mainly to decreased variable costs associated with the reduction of revenue equipment units in our fleet.

Gains on the disposal of property and equipment increased $18.6 million, to a gain on disposal of $27.3 million during the nine months ended September 30, 2021 from $8.7 million gain on disposal in the same period of 2020. The increase was primarily due to a significant increase of equipment sales volume. We expect the used equipment market to be strong in 2022, although our participation may be limited by production shortages and increased costs for new revenue equipment to replace sold units.

Our effective tax rate was 25.8% and 24.5% for the nine months ended September 30, 2021 and 2020, respectively. The increase in the effective tax rate is due to non-recurring favorable adjustments realized in 2020.

Liquidity and Capital Resources

The growth of our business requires significant investments in new revenue equipment. Historically, except for acquisitions, we have been debt-free, funding revenue equipment purchases with our primary source of liquidity, cash flow provided by operating activities and proceeds from sales of used equipment. We entered into a line of credit during the fourth quarter of 2013, as first amended on August 31, 2018 and amended a second time on August 31, 2021, described below, to partially finance an acquisition in 2013, including the payoff of debt we assumed. After the original debt borrowings were paid off, following the 2013 acquisition, we have not had any debt borrowings on this line of credit. At September 30, 2021, we had $180.4 million in cash and cash equivalents, no outstanding debt, and $14.2 million available borrowing capacity on the Credit Agreement. We paid a regular and special dividend on October 1, 2021 reducing cash and cash equivalents by $41.1 million.

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”). Pursuant to the Credit Agreement, the Bank provided a five-year, $250.0 million unsecured revolving line of credit which may be used for future working capital, equipment financing, and general corporate purposes. The Bank's original commitment decreased to $175.0 million on November 1, 2016 through scheduled maturity on October 31, 2018. However, on August 31, 2018, the Borrower and the Bank entered into the First Amendment to this Credit Agreement. The First Amendment (i) provided for a $100.0 million unsecured revolving line of credit (the “Revolver”), which may be used for working capital, equipment financing, permitted acquisitions, and general corporate purposes, (ii) provided an uncommitted accordion feature, which allowed 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) increased the letter of credit subfeature of the Credit Agreement from $20.0 million to $30.0 million, and (iv) extended the maturity of the Credit Agreement to August 31, 2021, subject to the Borrower’s ability to terminate the commitment at any time at no additional cost to the Borrower.

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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, conditions, representations and warranties, and indemnification provisions. We were in compliance with the respective financial covenants at September 30, 2021 and during the three and nine months then ended.

The total estimated purchase commitments for tractors (net of tractor sale commitments) and trailer equipment as of September 30, 2021 was $42.9 million. These commitments extend through the remainder of 2021 and into 2022.

Cash flow provided by operating activities during the nine months ended September 30, 2021 was $95.7 million as compared to $133.0 million during the same period of 2020. This decrease was primarily due to the net effect of $40.5 million less cash provided by non-working capital items and $2.6 million more cash used by working capital items partially offset by a $5.8 million increase due to higher net income. Cash flows provided by operating activities was 20.8% of operating revenues for the nine months ended September 30, 2021 compared with 27.2% for the same period of 2020.

The Coronavirus Aid, Relief, and Economic Act (the "CARES Act"), allowed employers to defer the deposit and payment of the employer's share of Social Security taxes. As a result we deferred remitting payroll taxes normally paid on a weekly basis from April through December of 2020. The first half of the deferred tax payments are due in December 2021 while the second half of the deferred tax payments are due in December 2022. The CARES Act deferred federal payroll taxes as of September 30, 2021 was $9.2 million.

Cash provided by investing activities was $5.0 million during the nine months ended September 30, 2021 compared to cash used in investing activities of $112.3 million during the comparative 2020 period, or a net increase in cash of $117.3 million. The net increase in cash provided was the combined result of more property and equipment sale proceeds received and less cash used for purchases of property and equipment comparing the two periods. We currently expect to spend approximately $15 to $20 million in net capital expenditures during the remainder of 2021. As a result of production shortages and increased costs for new revenue equipment, our trade activity in 2022 is anticipated to be below levels experienced in recent years. Our CODM makes all revenue equipment purchasing and selling decisions on a combined basis based primarily on age, condition, and current market conditions for the equipment regardless of which legacy fleet the equipment was associated with.

Cash used in financing activities increased $17.2 million during the nine months ended September 30, 2021 compared to the same period of 2020 due mainly to $19.1 million more cash used for repurchases of common stock during the nine months ended September 30, 2021 as we repurchased 1.8 million shares compared to 0.7 million shares repurchased during the same period of 2020.

We have a stock repurchase program with 6.7 million shares remaining authorized for repurchase under the program as of September 30, 2021 and the program has no expiration date. There were 1.0 million shares repurchased in the open market during the three months ended September 30, 2021 and no shares repurchased in the same period of 2020. During the nine months ended September 30, 2021, 1.8 million shares were repurchased in the open market for $30.9 million and there were 0.7 million shares repurchased in the open market for $12.3 million during the nine months ended September 30, 2020. Shares repurchased were accounted for as treasury stock. The Company has acquired 37.8 thousand shares for $0.6 million subsequent to September 30, 2021. Repurchases are expected to continue from time to time, as determined by market conditions, cash flow requirements, securities law limitations, and other factors, until the number of shares authorized have been repurchased, or until the authorization is terminated. The share repurchase authorization is discretionary and has no expiration date.

21

We had net payments of $26.5 million and $4.6 million for income taxes, net of refunds, in the nine months ended September 30, 2021 and September 30, 2020, respectively. The increase in net tax payments is due to a federal refund received in 2020, increased current year tax liability associated with the recognition of tax gains, and less purchases of property and equipment resulting in reduced amounts of tax depreciation in the current year.

Management believes we have adequate liquidity to meet our current and projected needs in the foreseeable future. Management believes we will continue to have significant capital requirements over the long-term, which we expect to fund with current available cash, cash flows provided by operating activities, proceeds from the sale of used equipment and to a lesser extent, available capacity on the Credit Agreement.

Off-Balance Sheet Transactions

Our liquidity or financial condition is not materially affected by off-balance sheet transactions.

ITEM 3.       QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

General

We are exposed to market risk changes in interest rates during periods when we have outstanding borrowings and from changes in commodity prices, primarily fuel and rubber. We do not currently use derivative financial instruments for risk management purposes, although we have used instruments in the past for fuel price risk management, and do not use them for either speculation or trading. Because substantially all of our operations are confined to the United States, we are not directly subject to a material foreign currency risk.

Interest Rate Risk

We had no debt outstanding at September 30, 2021 and we had $14.2 million available borrowing capacity on our Credit Agreement at September 30, 2021. Borrowings under the Credit Agreement is based on the Secured Overnight Financing Rate (“SOFR”) plus a spread based on the Company’s consolidated funded debt to adjusted EBITDA ratio. Increases in interest rates could impact our interest expense on future borrowings.

Commodity Price Risk

We are subject to commodity price risk primarily with respect to purchases of fuel, tires (rubber), and other commodities that are inherent components of revenue equipment. We have fuel surcharge agreements with most customers that enable us to pass through most long-term price increases therefore limiting our exposure to commodity price risk. Fuel surcharges that can be collected do not always fully offset an increase in the cost of fuel as we are not able to pass through fuel costs associated with out-of-route miles, empty miles, and tractor idle time. Additionally, because our fuel surcharge recovery lags behind changes in fuel prices, our fuel surcharge recovery may not capture the increased costs we pay for fuel, especially when prices are rising. Based on our actual fuel purchases for 2020, assuming miles driven, fuel surcharges as a percentage of revenue, percentage of empty and out-of-route miles, and miles per gallon remained consistent with 2020 amounts, a $1.00 increase in the average price of fuel per gallon, year over year, would decrease our income before income taxes by approximately $8.2 million in 2021. We use a significant amount of tires to maintain our revenue equipment. We are not able to pass through 100% of price increases from tire suppliers due to the severity and timing of increases and current rate environment. Historically, we have sought to minimize tire price increases through bulk tire purchases from our suppliers. Based on our expected tire purchases for 2021, a 10% increase in the price of tires would increase our tire purchase expense by $1.4 million, resulting in a corresponding decrease in income before income taxes.

ITEM 4.       CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures– We have established disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) to ensure that material information relating to us, including our consolidated subsidiaries, is made known to the officers who certify our financial reports and to other members of senior management and the Board of Directors.

As of the end of the period covered by this report, we carried out an evaluation, under the supervision and with the participation of our management, including the Chief Executive Officer (Principal Executive Officer) and Chief Financial Officer (Principal Accounting and Financial Officer), of the effectiveness of the design and operations of our disclosure controls and procedures.

22

Based upon that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of September 30, 2021.

Our management, including our Chief Executive Officer and Chief Financial Officer, does not expect that our disclosure controls and procedures, or our internal controls, will prevent all errors or intentional fraud. An internal control system, no matter how well-conceived and operated, can only provide reasonable, not total, assurance that the objectives of such internal controls are met.

Changes in Internal Control Over Financial Reporting – There have been no changes in our internal control over financial reporting that occurred during the quarter ended September 30, 2021, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II

ITEM 1. LEGAL PROCEEDINGS

We are a party to ordinary, routine litigation and administrative proceedings incidental to our business. These proceedings primarily involve claims for personal injury, property damage, cargo, and workers’ compensation incurred in connection with the transportation of freight. We maintain insurance to cover liabilities arising from the transportation of freight for amounts in excess of certain self-insured retentions. Based on our present knowledge, management believes that the resolution of open claims and pending litigation is not likely to have a materially adverse effect on our consolidated financial statements.

While we attempt to identify, manage, and mitigate risks and uncertainties associated with our business, some level of risk and uncertainty will always be present. Our Annual Report on Form 10-K for the year ended December 31, 2020, in the section entitled "Item 1A. Risk Factors," describes some of the risks and uncertainties associated with our business. The information presented below supplements such risk factors. We are amending and restating in its entirety the risk factor entitled “Increased prices for new revenue equipment, design changes of new engines, decreased availability of new revenue equipment, and decreased demand for and value of used equipment could have a materially adverse effect on our business, financial condition, results of operations, and profitability,” from our Annual Report Form 10-K for the year ended December 31, 2020, as set forth below. The risk factors set forth below should be read in conjunction with the risk factors included in our Annual Report on Form 10 K for the year ended December 31, 2020.

The proposed new rule concerning mandatory COVID-19 vaccination of employees could have a material adverse effect our business, financial condition, and results of operations.

In September 2021, President Biden announced a proposed new rule requiring all employers with at least 100 employees to ensure that their employees are fully vaccinated or require any employees who remain unvaccinated to produce a negative COVID-19 test result on at least a weekly basis before coming to work. The Department of Labor’s Occupational Safety and Health Administration (“OSHA”) is drafting an emergency rule to carry out this mandate (the “Emergency Rule”), which is expected to take effect in the coming weeks. It is currently unclear whether the Emergency Rule will include an exception for professional truck drivers. When the Emergency Rule is implemented, it could, among other things, (i) cause our unvaccinated employees to go to smaller employers, not subject to the Emergency Rule, or leave us or the trucking industry, especially our unvaccinated drivers, (ii) result in logistical issues, increased expenses, and operational issues from arranging for weekly tests of our unvaccinated employees, especially our unvaccinated drivers, (iii) result in increased costs for recruiting and retention of drivers, as well as the cost of weekly testing, and (iv) result in decreased revenue if we are unable to recruit and retain new drivers due to the Emergency Rule. It is expected that a vaccination mandate that applies to drivers would significantly reduce the pool of drivers available to us and our industry, which would further impact the extreme shortage of available drivers. Furthermore, the actions by certain states may conflict with the Emergency Rule, causing further issues with compliance. Accordingly, the Emergency Rule, when implemented, could have a material adverse effect on our business, financial condition, and results of operations.

Increased prices for new revenue equipment, design changes of new engines, decreased availability of new revenue equipment, and decreased demand for and value of used equipment could have a materially adverse effect on our business, financial condition, results of operations, and profitability.

We are subject to risk with respect to higher prices for new tractors and trailers. We have at times experienced an increase in prices for new tractors and the resale values of the tractors have not always increased to the same extent. Prices have increased and may continue to increase, due to, among other reasons, (i) increases in commodity prices, (ii) government regulations applicable to newly manufactured tractors, trailers, and diesel engines, and (iii) the pricing discretion of equipment manufacturers. In addition, we have recently equipped our tractors with safety, aerodynamic, and other options that increase the price of new equipment. Compliance with governmental regulations has increased the cost of our new tractors, may increase the cost of new trailers, could impair equipment productivity, in some cases, result in lower fuel mileage, and increase our operating expenses. As a result, we expect to continue to pay increased prices for equipment and incur additional expenses for the foreseeable future.

Tractor and trailer vendors may reduce their manufacturing output in response to lower demand for their products in economic downturns or shortages of component parts. A decrease in vendor output may have a materially adverse effect on our ability to purchase a quantity of new revenue equipment that is sufficient to sustain our desired growth rate and to maintain a late-model fleet. Currently, tractor and trailer manufacturers are experiencing significant shortages of semiconductor chips, steel, and other component parts and supplies, forcing many manufacturers to curtail or suspend their production, which has led to a lower supply of tractors and trailers, higher prices, and lengthened trade cycles, which could have material adverse effect on our business, financial condition, and results of operations, particularly our maintenance expense and driver retention.

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The market for used equipment is cyclical and can be volatile, and any downturn in the market could negatively impact our earnings and cash flows. During periods of higher used equipment values, we have recognized significant gains on the sale of our used tractors and trailers, in part because of a strong used equipment market and our historical practice of capitalizing on changes in the used equipment market. Conversely, during periods of lower used equipment values, we may generate lower gains on sale, or even losses, or we may have to record impairments of the carrying value of our equipment, any of which would reduce our earnings and cash flows, and could adversely impact our liquidity and financial condition. Alternatively, we could decide, or be forced, to operate our equipment longer, which could negatively impact maintenance and repairs expense, customer service, and driver satisfaction.

The following table provides information about purchases by the Company of its common stock during the quarter ended September 30, 2021.

	(a) Total number of shares purchased	(b) Average price paid per share		(c) Total number of shares purchased as part of publicly announced plans or programs	(d) Maximum number of shares that may yet be purchased under the plans or programs (1)
					4,670,774
July 1, 2021 - July 31, 2021	349,523	$	16.60	349,523	4,321,251
August 1, 2021 - August 31, 2021	575,614	16.68		575,614	6,745,637
September 1, 2021 - September 30, 2021	62,490	15.97		62,490	6,683,147
Total	987,627			987,627

(1) On November 16, 2015, we announced our share repurchase plan for the purchase of up to 4,750,000 shares. On May 11, 2018, we announced the addition of 5,000,000 shares to the remaining shares authorized for purchase under our share repurchase plan. On August 20, 2021, we announced the addition of 3,000,000 shares to the remaining shares authorized for purchase under our share repurchase plan. The share repurchase plan has no expiration date and will remain in effect until the number of authorized shares have been repurchased, or until the authorization is terminated.

None.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5. OTHER INFORMATION

None.

(a) Exhibits

2.1	Acquisition and Merger Agreement, dated August 26, 2019, by and among, Midwest Holding Group, Inc., Millis Real Estate Leasing, LLC, the members of Millis Real Estate Leasing, LLC, Heartland Trucking, Inc., Heartland Express Inc. of Iowa, Heartland Express, Inc., in its capacity as guarantor, and David P. Millis, in his capacity as Sellers’ Representative.
3.1	Articles of Incorporation, as amended. Incorporated by reference to Exhibit 3.1 of the Company's Form 10-Q for the quarter ended September 30, 2017, dated November 9, 2017.
3.2	Amended and Restated Bylaws. Incorporated by reference to Exhibit 3.2 of the Company's Form 10-Q for the quarter ended September 30, 2017, dated November 9, 2017.
10.1*	Second Amendment to Credit Agreement, dated August 31, 2021, by and between Wells Fargo Bank, National Association and Heartland Express, Inc. of Iowa, Heartland Express, Inc., Heartland Express Maintenance Services, Inc., Heartland Express Services, Inc., Millis Transfer, LLC, and Midwest Holding Group, LLC.
31.1*	Certification of Principal Executive Officer Pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act, as amended.
31.2*	Certification of Principal Financial Officer Pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act, as amended.
32.1**	Certification of Principal Executive Officer Pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2**	Certification of the Principal Financial Officer Pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	XBRL Instance Document - the instance document does not appear in the interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
104	Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101)

*Filed herewith.

** Furnished herewith.

26

SIGNATURES

Pursuant to the requirements of the Securities Act of 1934, the registrant has duly caused the report to be signed on its behalf by the undersigned thereunto duly authorized.

		HEARTLAND EXPRESS, INC.
Date:	November 3, 2021	By: /s/ Christopher A. Strain
		Christopher A. Strain
		Vice President of Finance
		and Chief Financial Officer
		(Principal Accounting and Financial Officer)

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EX-10.1

Exhibit No. 10.1

/s/ Michael Gerdin /s/ Casey A. Cason /s/ Michael Gerdin /s/ Michael Gerdin

/s/ Michael Gerdin /s/ Michael Gerdin Michael Gerdin CEO CEO Michael Gerdin /s/ Michael Gerdin

/s/ Michael Gerdin

EX-31.1

Exhibit No. 31.1

Certification

I, Michael J. Gerdin, certify that:

1.	I have reviewed this quarterly report on Form 10-Q of Heartland Express Inc. (the “Registrant”);
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report;
3.	Based on my knowledge, the financial statements and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this quarterly report;
4.	The Registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rule 13a-15(f) and 15d-15(f)) for the Registrant and we have:
	a)	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared;
	b)	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
	c)	Evaluated the effectiveness of the Registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this quarterly report based on such evaluation; and
	d)	Disclosed in this quarterly report any change in the Registrant’s internal control over financial reporting that occurred during the Registrant’s most recent fiscal quarter (the Registrant's fourth fiscal quarter in case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant’s internal control over financial reporting; and
5.	The Registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant’s independent registered public accounting firm and the audit committee of Registrant’s board of directors (or persons performing the equivalent functions):
	a)	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant’s ability to record, process, summarize and report financial information; and
	b)	Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant’s internal control over financial reporting.

Date:	November 3, 2021	By:	/s/ Michael J. Gerdin
			Michael J. Gerdin
			Chairman, President and Chief Executive Officer
			(Principal Executive Officer)

EX-31.2

Exhibit No. 31.2

Certification

I, Christopher A. Strain, certify that:

1.	I have reviewed this quarterly report on Form 10-Q of Heartland Express Inc. (the “Registrant”);
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report;
3.	Based on my knowledge, the financial statements and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this quarterly report;
4.	The Registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rule 13a-15(f) and 15d-15(f)) for the Registrant and we have:
	a)	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared;
	b)	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
	c)	Evaluated the effectiveness of the Registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this quarterly report based on such evaluation; and
	d)	Disclosed in this quarterly report any change in the Registrant’s internal control over financial reporting that occurred during the Registrant’s most recent fiscal quarter (the Registrant's fourth fiscal quarter in case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant’s internal control over financial reporting; and
5.	The Registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant’s independent registered public accounting firm and the audit committee of Registrant’s board of directors (or persons performing the equivalent functions):
	a)	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant’s ability to record, process, summarize and report financial information; and
	b)	Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant’s internal control over financial reporting.

Date:	November 3, 2021	By:	/s/ Christopher A. Strain
			Christopher A. Strain
			Vice President-Finance
			Treasurer and Chief Financial Officer
			(Principal Accounting and Financial Officer)

EX-32.1

Exhibit No. 32.1

CERTIFICATION OF

PRINCIPAL EXECUTIVE OFFICER

PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Heartland Express, Inc. (the "Company"), on Form 10-Q for the period ended September 30, 2021 (the "Report"), filed with the Securities and Exchange Commission, I, Michael J. Gerdin, Chairman, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:
1.	The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and
2.	The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	November 3, 2021	By:	/s/ Michael J. Gerdin
			Michael J. Gerdin
			Chairman, President and Chief Executive Officer

EX-32.2

Exhibit No. 32.2

CERTIFICATION OF

PRINCIPAL FINANCIAL OFFICER

PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Heartland Express, Inc. (the "Company"), on Form 10-Q for the period ended September 30, 2021 (the "Report"), filed with the Securities and Exchange Commission, I, Christopher A. Strain, Vice President-Finance, Treasurer and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:
1.	The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and
2.	The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	November 3, 2021	By:	/s/ Christopher A. Strain
			Christopher A. Strain
			Vice President-Finance, Treasurer
			and Chief Financial Officer

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Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Oct. 29, 2021
Document Information [Line Items]
Title of 12(b) Security	Common Stock, $0.01 par value
Entity Incorporation, State or Country Code	NV
Entity Registrant Name	HEARTLAND EXPRESS INC
City Area Code	319
Local Phone Number	645-7060
Entity Central Index Key	0000799233
Document Type	10-Q
Document Period End Date	Sep. 30, 2021
Entity File Number	0-15087
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		78,904,751
Entity Tax Identification Number	93-0926999
Entity Address, Address Line One	901 Heartland Way,
Entity Address, City or Town	North Liberty,
Entity Address, State or Province	IA
Entity Address, Postal Zip Code	52317
Trading Symbol	HTLD
Security Exchange Name	NASDAQ
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Document Quarterly Report	true
Document Transition Report	false

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Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
CURRENT ASSETS
Cash and cash equivalents	$ 180,366	$ 113,852
Trade receivables, net of $1.1 million allowance in 2021 and 2020, respectively	58,538	55,577
Prepaid tires	9,272	8,241
Other current assets	10,398	15,342
Total current assets	258,574	193,012
PROPERTY AND EQUIPMENT
Land and land improvements	83,698	77,525
Buildings	89,375	86,712
Furniture and fixtures	5,282	4,807
Shop and service equipment	14,404	14,380
Revenue equipment	518,505	590,153
Construction in progress	14,238	5,783
Property, Plant and Equipment, Gross	725,502	779,360
Less accumulated depreciation	234,444	240,080
Property and equipment, net	491,058	539,280
GOODWILL	168,295	168,295
OTHER INTANGIBLES, NET	22,953	24,746
OTHER ASSETS	17,400	17,679
Deferred Income Taxes, Net	0	8,164
Assets	958,280	951,176
CURRENT LIABILITIES
Accounts payable and accrued liabilities	14,430	12,751
Dividends Payable, Current	41,095	0
Compensation and benefits	24,355	22,422
Insurance accruals	13,645	15,837
Other Accrued Liabilities	19,001	18,557
Accrued Income Taxes, Current	4,513	1,475
Total current liabilities	117,039	71,042
LONG-TERM LIABILITIES
Income taxes payable	5,385	5,801
Deferred Tax and Other Liabilities, Noncurrent	87,217	104,004
Insurance accruals less current portion	39,823	45,995
Total long-term liabilities	132,425	155,800
COMMITMENTS AND CONTINGENCIES (Note 13)
STOCKHOLDERS' EQUITY
Preferred Stock, Value, Issued	0	0
Capital stock, common, $.01 par value; authorized 395,000 shares; issued 90,689 in 2021 and 2020; outstanding 78,943 and 80,653 in 2021 and 2020, respectively	907	907
Additional paid-in capital	4,319	4,330
Retained earnings	905,620	890,970
Treasury stock, at cost; 11,746 and 10,036 shares in 2021 and 2020, respectively	(202,030)	(171,873)
Stockholders' Equity Attributable to Parent	708,816	724,334
Liabilities and Stockholders' Equity	$ 958,280	$ 951,176

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Consolidated Balance Sheets Consolidated Balance Sheets (Parentheticals) - USD ($) shares in Thousands, $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Consolidated Balance Sheets Parentheticals [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current	$ 1.1	$ 1.1
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	5,000	5,000
Preferred Stock, Shares Issued	0	0
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	395,000	395,000
Common Stock, Shares, Issued	90,689	90,689
Common Stock, Shares, Outstanding	78,943	80,653
Treasury Stock, Shares	11,746	10,036

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Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Operating Revenue	$ 152,612	$ 162,282	$ 459,142	$ 489,473
Operating Expenses
Salaries, wages, and benefits	62,733	67,178	190,446	205,579
Rent and purchased transportation	950	999	2,922	3,635
Fuel	25,258	21,218	74,220	65,445
Operating Costs and Expenses	5,372	7,118	16,729	21,516
Cost, Direct Tax and License	3,311	3,664	10,345	11,229
Insurance and claims	5,053	4,827	15,171	16,034
Communications and utilities	1,218	1,398	3,412	4,091
Depreciation and amortization	25,280	27,625	78,162	81,427
Other operating expenses	5,418	6,637	16,173	19,602
Gain on disposal of property and equipment	(15,254)	(5,721)	(27,341)	(8,739)
Total operating expenses	119,339	134,943	380,239	419,819
Operating income	33,273	27,339	78,903	69,654
Interest income	181	171	493	704
Income before income taxes	33,454	27,510	79,396	70,358
Federal and state income taxes	8,988	6,796	20,454	17,224
Net Income	24,466	20,714	58,942	53,134
Other comprehensive income, net of tax	0	0	0	0
Comprehensive income	$ 24,466	$ 20,714	$ 58,942	$ 53,134
Net income per share
Basic	$ 0.31	$ 0.25	$ 0.74	$ 0.65
Diluted	$ 0.31	$ 0.25	$ 0.74	$ 0.65
Weighted average shares outstanding
Basic	79,336	81,370	79,795	81,530
Diluted	79,364	81,404	79,839	81,587
Dividends declared per share	$ 0.52	$ 0.02	$ 0.56	$ 0.06

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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Capital Stock, Common	Additional Paid-in Capital	Retained Earnings	Treasury Stock
Balance at Dec. 31, 2019	$ 684,659	$ 907	$ 4,141	$ 826,666	$ (147,055)
Net income	13,238	0	0	13,238	0
Dividends, Common Stock	(1,628)	0	0	(1,628)	0
Repurchases of common stock	(12,278)	0	0	0	(12,278)
Stock-based compensation, net of tax	(697)	0	(291)	0	(406)
Balance at Mar. 31, 2020	684,688	907	4,432	838,276	(158,927)
Net income	19,182	0	0	19,182	0
Dividends, Common Stock	(1,628)	0	0	(1,628)	0
Stock-based compensation, net of tax	373	0	174	0	199
Balance at Jun. 30, 2020	702,615	907	4,606	855,830	(158,728)
Net income	20,714	0	0	20,714	0
Dividends, Common Stock	(1,628)	0	0	(1,628)	0
Stock-based compensation, net of tax	8	0	(208)	0	216
Balance at Sep. 30, 2020	721,709	907	4,398	874,916	(158,512)
Balance at Dec. 31, 2020	724,334	907	4,330	890,970	(171,873)
Net income	13,734	0	0	13,734	0
Dividends, Common Stock	(1,599)	0	0	(1,599)	0
Repurchases of common stock	(14,537)	0	0	0	(14,537)
Stock-based compensation, net of tax	485	0	146	0	339
Balance at Mar. 31, 2021	722,417	907	4,476	903,105	(186,071)
Net income	20,742	0	0	20,742	0
Dividends, Common Stock	(1,598)	0	0	(1,598)	0
Stock-based compensation, net of tax	205	0	55	0	150
Balance at Jun. 30, 2021	741,766	907	4,531	922,249	(185,921)
Net income	24,466	0	0	24,466	0
Dividends, Common Stock	(41,095)	0	0	(41,095)	0
Repurchases of common stock	(16,400)	0	0	0	(16,400)
Stock-based compensation, net of tax	79	0	(212)	0	291
Balance at Sep. 30, 2021	$ 708,816	$ 907	$ 4,319	$ 905,620	$ (202,030)

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Consolidated Statement of Stockholders' Equity Parentheticals - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Dividends declared per share	$ 0.52	$ 0.02	$ 0.56	$ 0.06

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
OPERATING ACTIVITIES
Net Income	$ 24,466	$ 20,714	$ 58,942	$ 53,134
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization			78,286	81,786
Deferred income taxes			(8,623)	9,256
Stock-based compensation			959	1,509
Gain on disposal of property and equipment	(15,254)	(5,721)	(27,341)	(8,739)
Changes in certain working capital items:
Trade receivables			(2,961)	(5,785)
Prepaid expenses and other current assets			3,041	(6,645)
Accounts payable, accrued liabilities, and accrued expenses			(9,231)	5,101
Accrued income taxes			2,622	3,370
Net cash provided by operating activities			95,694	132,987
INVESTING ACTIVITIES
Proceeds from sale of property and equipment			98,421	51,473
Purchases of property and equipment			(93,213)	(163,824)
Change in other assets			(181)	72
Net cash provided by (used in) investing activities			5,027	(112,279)
FINANCING ACTIVITIES
Payments of cash dividends			(3,198)	(4,884)
Shares withheld for employee taxes related to stock-based compensation			(190)	(431)
Repurchases of common stock			(31,422)	(12,278)
Net cash used in financing activities			(34,810)	(17,593)
Net increase in cash, cash equivalents and restricted cash			65,911	3,115
CASH, CASH EQUIVALENTS AND RESTRICTED CASH
Beginning of period			131,140	96,076
Ending Period	197,051	99,191	197,051	99,191
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid during the period for income taxes, net of refunds			26,455	4,598
Noncash investing and financing activities:
Purchased property and equipment in accounts payable			3,258	12,114
Sold revenue equipment and property in other current assets			1,423	5,195
Common stock dividends declared in accounts payable			41,095	0
RECONCILIATION OF CASH, CASH EQUIVALENTS AND RESTRICTED CASH
Cash and Cash Equivalents, at Carrying Value	180,366	81,949	180,366	81,949
Restricted Cash and Investments, Current	932	1,097	932	1,097
Restricted Cash and Cash Equivalents, Noncurrent	15,753	16,145	15,753	16,145
Ending Period	$ 197,051	$ 99,191	$ 197,051	$ 99,191

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Basis of Presentation

9 Months Ended

Sep. 30, 2021

Basis of Presentation and Accounting Pronouncements [Abstract]

Basis of Presentation and Significant Accounting Policies [Text Block]

Basis of Presentation and New Accounting Pronouncements

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 ("Millis Transfer"). We, together with our subsidiaries, are a short-to-medium haul truckload carrier (predominately 500 miles or less per load). We primarily provide nationwide asset-based dry van truckload service for major shippers across the United States.

The accompanying consolidated financial statements include the parent company, Heartland Express, Inc., and its subsidiaries, all of which are wholly owned. All material intercompany items and transactions have been eliminated in consolidation. The accompanying unaudited consolidated financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and with the instructions to Form 10-Q and Regulation S-X. Accordingly, they do not include all of the information and notes to the financial statements required by U.S. GAAP for complete financial statements. In the opinion of management, all normal, recurring adjustments considered necessary for a fair presentation have been included. The consolidated financial statements should be read in conjunction with the audited consolidated financial statements and accompanying notes for the year ended December 31, 2020 included in the Annual Report on Form 10-K the Company filed with the Securities and Exchange Commission (the "SEC") on February 22, 2021. Interim results of operations are not necessarily indicative of the results to be expected for the full year or any other interim periods. There were no changes to the Company's significant accounting policies during the three and nine months ended September 30, 2021.

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): "Simplifying the Accounting for Income Taxes". The ASU simplifies the accounting for income taxes by removing certain exceptions to the general principles in Topic 740. The ASU also clarifies and amends existing guidance to improve consistent application among reporting entities. This ASU is effective for fiscal years beginning after December 15, 2020, including interim periods within that reporting period. We have adopted the guidance effective January 1, 2021 and the impact was immaterial to our financial statements.

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Use of Estimates	9 Months Ended
	Sep. 30, 2021
Use of Estimates [Abstract]
Use of Estimates	Use of EstimatesThe preparation of the consolidated financial statements in conformity with 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. There were no significant changes in estimates and assumptions used by management related to our critical accounting policies during the three and nine months ended September 30, 2021.

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Segment Information	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Segment Information	Segment InformationWe provide truckload services across the United States (U.S.) and parts of Canada. These truckload services are primarily asset-based transportation services in the dry van truckload market, and we also offer truckload temperature-controlled transportation services to select dedicated customers, which are not significant to our operations. Our Chief Operating Decision Maker (“CODM”) oversees and manages all of our transportation services, on a combined basis, including previously acquired entities. As a result of the foregoing, we have determined that we have one segment, consistent with the authoritative accounting guidance on disclosures about segments of an enterprise and related information.

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Revenue Recognition (Notes)

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customer [Text Block]

Revenue Recognition

The Company recognizes revenue over time as control of the promised services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those services. The delivery of the shipment and completion of the performance obligation allows for the collection of payment generally within 30 days after the delivery date of the shipment for the majority of our customers.

The Company's operations are consistent with those in the trucking industry where freight is hauled twenty-four hours a day and seven days a week, subject to hours of service rules. The Company’s average length of haul is 400-500 miles per trip and

each individual shipment accepted by the Company is considered a separate contract with the performance obligation being the delivery of the freight. Our average length of haul for each load of freight generally equals less than one day of continuous transit time. The Company estimates revenue for multiple-stop loads based on miles run and estimates revenue for single stop loads based on transit time, as the customer simultaneously receives and consumes the benefit provided. The Company hauls freight and earns revenue on a consistent basis throughout the periods presented. A corresponding contract asset existed for the estimated revenue of these in-process loads for $1.2 million and $1.1 million at September 30, 2021 and December 31, 2020, respectively. Recorded contract assets are included in the accounts receivable line item of the balance sheet. Corresponding liabilities are recorded in the accounts payable and accrued liabilities and compensation and benefits line items for the estimated expenses on these same in-process loads. The Company had no contract liabilities associated with our operations as of September 30, 2021 and December 31, 2020, respectively.

Total revenues recorded were $152.6 million and $162.3 million for the three months ended September 30, 2021 and 2020, respectively. Fuel surcharge revenues were $19.6 million and $14.4 million for the three months ended September 30, 2021 and 2020, respectively. Accessorial and other revenues recorded in the consolidated statements of comprehensive income collectively represented $2.7 million and $3.6 million for the three months ended September 30, 2021 and 2020, respectively.

Total revenues recorded were $459.1 million and $489.5 million for the nine months ended September 30, 2021 and 2020, respectively. Fuel surcharge revenues were $55.5 million and $47.9 million for the nine months ended September 30, 2021 and 2020, respectively. Accessorial and other revenues recorded in the consolidated statements of comprehensive income collectively represented $8.6 million and $10.5 million for the nine months ended September 30, 2021 and 2020, respectively.

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Cash and Cash Equivalents	9 Months Ended
	Sep. 30, 2021
Cash and Cash Equivalents [Abstract]
Cash and Cash Equivalents	Cash and Cash EquivalentsCash equivalents are short-term, highly liquid investments with insignificant interest rate risk and original maturities of three months or less at acquisition. At September 30, 2021, restricted and designated cash and investments totaled $16.7 million, of which $0.9 million was included in other current assets and $15.8 million was included in other non-current assets in the consolidated balance sheet. Restricted and designated cash and investments totaled $17.3 million at December 31, 2020, of which $1.1 million was included in other current assets and $16.2 million was included in other non-current assets in the consolidated balance sheet. The restricted funds represent deposits required by state agencies for self-insurance purposes and designated funds that are earmarked for a specific purpose and not for general business use.

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Prepaid Tires, Property, Equipment and Depreciation	9 Months Ended
	Sep. 30, 2021
Property, Plant and Depreciation [Abstract]
Property, Equipment, and Depreciation	Prepaid Tires, Property, Equipment, and DepreciationProperty and equipment are reported at cost, net of accumulated depreciation. Maintenance and repairs are charged to operations as incurred. New tires are capitalized separately from revenue equipment and are reported separately as “Prepaid tires” in the consolidated balance sheets and amortized over two years. Depreciation for financial statement purposes is computed by the straight-line method for all assets other than tractors. We recognize depreciation expense on new tractors (excludes assets acquired in an acquisition) using the 125% declining balance method. Revenue equipment acquired through acquisitions is generally revalued to current market values as of the acquisition date. These acquired assets are depreciated on a straight-line basis aligned with the remaining period of expected use. As acquired equipment is replaced, our fleet returns to our base methods of declining balance depreciation for tractors and straight-line depreciation for trailers. New tractors are depreciated to salvage values of $15,000 while new trailers are depreciated to salvage values of $4,000. At September 30, 2021, there was $1.4 million amounts receivable related to equipment sales recorded in other current assets compared to $3.4 million at December 31, 2020.

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Other Intangible, Net and Goodwill

9 Months Ended

Sep. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets and Goodwill

Other Intangibles, Net and GoodwillAll intangible assets determined to have finite lives are amortized over their estimated useful lives. The useful life of an intangible asset is the period over which the asset is expected to contribute directly or indirectly to future cash flows. There was no change in the gross amount of identifiable intangible assets during the three and nine months ended September 30, 2021. Amortization expense of $0.6 million and $0.6 million for the three months ended September 30, 2021 and 2020, respectively, was included in depreciation and amortization in the consolidated statements of comprehensive income. Amortization expense of $1.8 million and $1.8 million for the nine months ended September 30, 2021 and 2020, respectively, was included in depreciation and amortization in the consolidated statements of comprehensive income. Intangible assets subject to amortization consisted of the following at September 30, 2021:

	Amortization period (years)	Gross Amount		Accumulated Amortization		Net intangible assets
		(in thousands)
Customer relationships	15-20	$	23,000	$	5,514	$	17,486
Tradename	0.5-6	12,900		9,100		3,800
Covenants not to compete	1-10	5,300		3,633		1,667
		$	41,200	$	18,247	$	22,953

The carrying amount of goodwill was $168.3 million at September 30, 2021 and December 31, 2020, respectively.

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Earnings Per Share

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Earnings Per Share

Earnings per Share

Basic earnings per share is based upon the weighted average common shares outstanding during each year. Diluted earnings per share is based on the basic weighted earnings per share with additional weighted common shares for common stock equivalents. During the three and nine months ended September 30, 2021 and September 30, 2020, we had outstanding restricted shares of common stock to certain of our employees under the Company's 2011 Restricted Stock Award Plan (the "2011 Plan"). We had no outstanding restricted shares of common stock under the Company's 2021 Restricted Stock Award Plan (the "2021 Plan"). A reconciliation of the numerator (net income) and denominator (weighted average number of shares outstanding of the basic and diluted earnings per share ("EPS")) for the three and nine months ended September 30, 2021 and September 30, 2020 is as follows (in thousands, except per share data):

	Three months ended September 30, 2021
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	24,466	79,336	$	0.31
Effect of restricted stock	—		28
Diluted EPS	$	24,466	79,364	$	0.31

	Three months ended September 30, 2020
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	20,714	81,370	$	0.25
Effect of restricted stock	—		34
Diluted EPS	$	20,714	81,404	$	0.25

	Nine months ended September 30, 2021
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	58,942	79,795	$	0.74
Effect of restricted stock	—		44
Diluted EPS	$	58,942	79,839	$	0.74

	Nine months ended September 30, 2020
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	53,134	81,530	$	0.65
Effect of restricted stock	—		57
Diluted EPS	$	53,134	81,587	$	0.65

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Equity

9 Months Ended

Sep. 30, 2021

Share Repurchases [Abstract]

Stockholders' Equity

Equity

We have a stock repurchase program with 6.7 million shares remaining authorized for repurchase as of September 30, 2021 following the additional authorization of 3.0 million shares by our Board of Directors on August 20, 2021. There were 1.0 million shares repurchased in the open market for $16.4 million during the three months ended September 30, 2021 and there were no shares repurchased in the open market during the three months ended September 30, 2020. There were 1.8 million shares repurchased in the open market for $30.9 million during the nine months ended September 30, 2021 and there were 0.7 million repurchased in the open market for $12.3 million during the nine months ended September 30, 2020. Repurchases are expected to continue from time to time, as determined by market conditions, cash flow requirements, securities law limitations, and other factors, until the number of shares authorized have been repurchased, or until the authorization is terminated. The share repurchase authorization is discretionary and has no expiration date.

During the three months ended September 30, 2021 and 2020, our Board of Directors declared dividends totaling $41.1 million and $1.6 million, respectively. The three months ended September 30, 2021 included a $0.50 per share special dividend totaling $39.5 million and the regular quarterly dividend totaling $1.6 million, while the 2020 dividend was a regular quarterly dividend. During the nine months ended September 30, 2021 and 2020, our Board of Directors declared dividends totaling $44.3 million and $4.9 million, respectively. The nine months ended September 30, 2021 included a $0.50 per share special dividend totaling $39.5 million and regular quarterly dividends totaling $4.8 million, while the 2020 dividends were regular quarterly dividends. Future payment of cash dividends and the amount of such dividends will depend upon our financial conditions, our results of operations, our cash requirements, tax treatment, and certain corporate law requirements, as well as factors deemed relevant by our Board of Directors.

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Stock-Based Compensation

9 Months Ended

Sep. 30, 2021

Stock-Based Compensation [Abstract]

Stock Based Compensation

Stock-Based Compensation

In July 2011, a Special Meeting of Stockholders of Heartland Express, Inc. was held, at which meeting the approval of the Heartland Express, Inc. 2011 Restricted Stock Award Plan (the "2011 Plan") was ratified. The 2011 Plan made available up to 0.9 million shares for the purpose of making restricted stock grants to our eligible officers and employees. There were no shares that were issued during the period 2011 to 2018 that remain unvested at September 30, 2021. Shares granted in 2019 through 2021 have various vesting terms that range from immediate to four years from the date of grant. Compensation expense associated with these awards is based on the market value of our stock on the grant date. Compensation expense associated with restricted stock awards is included in salaries, wages and benefits in the consolidated statements of comprehensive income. There were no significant assumptions made in determining fair value. Compensation expense associated with restricted stock awards was $0.2 million and $1.0 million respectively, for the three and nine months ended September 30, 2021. Compensation expense associated with restricted stock awards was $0.2 million and $1.5 million respectively, for the three and nine months ended September 30, 2020. Unrecognized compensation expense was $0.2 million at September 30, 2021 which will be recognized over a weighted average period of 0.8 years.

In May 2021, at the 2021 Annual Meeting of Stockholders, the approval of the Heartland Express, Inc. 2021 Restricted Stock Award Plan (the “2021 Plan”) was ratified. The 2021 Plan made available up to 0.6 million shares for the purpose of making restricted stock grants to our eligible employees, directors and consultants. No shares from the 2021 Plan have been granted as of September 30, 2021.

The following tables summarize our restricted stock award activity for the three and nine months ended September 30, 2021 and 2020.

	Three Months Ended September 30, 2021
	Number of Shares of Restricted Stock Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested at beginning of period	44.2	$	19.83
Granted	5.0	16.79
Vested	(21.5)	18.82
Forfeited	—	—
Outstanding (unvested) at end of period	27.7	$	20.07

	Three Months Ended September 30, 2020
	Number of Shares of Restricted Stock Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested at beginning of period	59.3	$	20.87
Granted	—	—
Vested	(21.1)	20.64
Forfeited	—	—
Outstanding (unvested) at end of period	38.2	$	20.99

	Nine Months Ended September 30, 2021
	Number of Shares of Restricted Stock Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested at beginning of period	59.7	$	20.29
Granted	24.3	18.29
Vested	(56.3)	19.54
Forfeited	—	—
Outstanding (unvested) at end of period	27.7	$	20.07

	Nine Months Ended September 30, 2020
	Number of Shares of Restricted Stock Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested at beginning of period	52.1	$	20.55
Granted	60.2	20.84
Vested	(73.6)	20.59
Forfeited	(0.5)	19.32
Outstanding (unvested) at end of period	38.2	$	20.99

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Long-Term Debt

9 Months Ended

Sep. 30, 2021

Long-term Line of Credit [Abstract]

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”). Pursuant to the Credit Agreement, the Bank provided a five-year, $250.0 million unsecured revolving line of credit which may be used for future working capital, equipment financing, and general corporate purposes. The Bank's original commitment decreased to $175.0 million on November 1, 2016 through scheduled maturity on October 31, 2018. However, on August 31, 2018, the Borrower and the Bank entered into the First Amendment to this Credit Agreement. The First Amendment (i) provided for a $100.0 million unsecured revolving line of credit (the “Revolver”), which may be used for working capital, equipment financing, permitted acquisitions, and general corporate purposes, (ii) provided an uncommitted accordion feature, which allowed 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) increased the letter of credit subfeature of the Credit Agreement from $20.0 million to $30.0 million, and (iv) extended the maturity of the Credit Agreement to August 31, 2021, subject to the Borrower’s ability to terminate the commitment at any time at no additional cost to the Borrower.

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, conditions, representations and warranties, and indemnification provisions. We were in compliance with the respective financial covenants at September 30, 2021 and during the three and nine months then ended.

We had no outstanding debt at September 30, 2021 and December 31, 2020, respectively. Outstanding letters of credit associated with the revolving line of credit at September 30, 2021 were $10.8 million. As of September 30, 2021, the line of credit available for future borrowing was $14.2 million.

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Income Taxes

9 Months Ended

Sep. 30, 2021

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

We use the asset and liability method of accounting for income taxes. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to temporary differences between the financial statement carrying amount of existing assets and liabilities and their respective tax basis. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. Such amounts are adjusted, as appropriate, to reflect changes in tax rates expected to be in effect when temporary differences reverse. The effect of changes in tax rates on deferred taxes is recognized in the period that the change is enacted. A valuation allowance is recorded to reduce the Company's deferred tax assets to the amount that is more likely than not to be realized. We had no recorded valuation allowance at September 30, 2021 and December 31, 2020. Our effective tax rate was 26.9% and 24.7% for the three months ended September 30, 2021 and 2020, respectively. The increase in the effective tax rate is due to non-recurring favorable adjustments for Interpretation 48 of Financial Accounting Standard 109 ("FIN 48") recognized in 2020 and favorable return adjustments associated with returns filed July of 2020 due to COVID-19 legislation. Our effective tax rate was 25.8% and 24.5% for the nine months ended September 30, 2021 and 2020, respectively. The increase in the effective tax rate is due to non-recurring favorable adjustments realized in 2020.

We recognize the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. We record interest and penalties related to unrecognized tax benefits in income tax expense.

At September 30, 2021 and December 31, 2020, we had a total of $4.6 million and $4.9 million in gross unrecognized tax benefits, respectively included in long-term income taxes payable in the consolidated balance sheet. Of this amount, $3.6 million and $3.9 million represents the amount of unrecognized tax benefits that, if recognized, would impact our effective tax rate as of September 30, 2021 and December 31, 2020. The net change in unrecognized tax benefits was zero and a decrease of $0.2 million during the three months ended September 30, 2021 and September 30, 2020, respectively. The net decrease in unrecognized tax benefits was due to settlements with corresponding reductions to uncertain tax liabilities occurring in the three months ended September 30, 2020. The net change in unrecognized tax benefits was a decrease of $0.3 million during the nine months ended September 30, 2021 and 2020, respectively. The net decrease in unrecognized tax benefits during the nine months ended September 30, 2021 and 2020 was mainly due to the expiration of certain statutes of limitations net of additions and adjustments to actual positions on returns filed for prior year. The total net amount of accrued interest and penalties for such unrecognized tax benefits was $0.8 million and $0.9 million at September 30, 2021 and December 31, 2020, respectively and is included in long-term income taxes payable in the consolidated balance sheets. Income tax expense is increased each period for the accrual of interest on outstanding positions and penalties when the uncertain tax position is initially recorded. Income tax expense is reduced in periods by the amount of accrued interest and penalties associated with reversed uncertain tax positions due to lapse of applicable statute of limitations, when applicable or when a position is settled.

Net interest and penalties included in income tax expense for the three month period ended September 30, 2021 and September 30, 2020 was a net expense of approximately $0.1 million and zero, respectively. Net interest and penalties included in income tax expense for the nine month period ended September 30, 2021 and September 30, 2020 was a net benefit of

approximately $0.1 million and $0.1 million, respectively. The favorable impact to income tax expense was due to reversals of interest and penalties due to lapse of applicable statute of limitations and settlements, net of additions for interest and penalty accruals during the same period. These unrecognized tax benefits relate to risks associated with state income tax filing positions for our corporate subsidiaries.

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:

	2021
	(in thousands)
Balance at January 1, 2021	$	4,937
Additions based on tax positions related to current year	372
Reductions for tax positions of prior years	(179)
Reductions due to lapse of applicable statute of limitations	(533)
Balance at September 30, 2021	$	4,597

A number of years may elapse before an uncertain tax position is audited and ultimately settled. It is difficult to predict the ultimate outcome or the timing of resolution for uncertain tax positions. It is reasonably possible that the amount of unrecognized tax benefits could significantly increase or decrease within the next twelve months. These changes could result from the expiration of the statute of limitations, examinations or other unforeseen circumstances. We do not have any outstanding litigation related to income tax matters. At this time, management’s best estimate of the reasonably possible change in the amount of gross unrecognized tax benefits is approximately no change to an increase of $1.0 million during the next twelve months, due to the combination of expiration of certain statute of limitations and estimated additions.  The federal statute of limitations remains open for the years 2018 and forward. Tax years 2011 and forward are subject to audit by state tax authorities depending on the tax code and administrative practice of each state.

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2021

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

We are a party to ordinary, routine litigation and administrative proceedings incidental to our business. In the opinion of management, our potential exposure under pending legal proceedings is adequately provided for in the accompanying consolidated financial statements.  

The total estimated purchase commitments for tractors (net of tractor sale commitments) and trailer equipment as of September 30, 2021 was $42.9 million. These commitments extend through the remainder of 2021 and into 2022.

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Subsequent Events	9 Months Ended
	Sep. 30, 2021
Subsequent Events [Abstract]
Subsequent Events, Policy [Policy Text Block]	Subsequent EventsNo events occurred requiring disclosure other than the repurchase of 37,759 shares of our common stock for $0.6 million subsequent to September 30, 2021.

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Basis of Presentation Basis of Presentation (Policies)

9 Months Ended

Sep. 30, 2021

Basis of Presentation [Abstract]

Basis of Presentation [Policy Text Block]

Basis of Presentation and New Accounting PronouncementsHeartland 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 ("Millis Transfer"). We, together with our subsidiaries, are a short-to-medium haul truckload carrier (predominately 500 miles or less per load). We primarily provide nationwide asset-based dry van truckload service for major shippers across the United States.The accompanying consolidated financial statements include the parent company, Heartland Express, Inc., and its subsidiaries, all of which are wholly owned. All material intercompany items and transactions have been eliminated in consolidation. The accompanying unaudited consolidated financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and with the instructions to Form 10-Q and Regulation S-X. Accordingly, they do not include all of the information and notes to the financial statements required by U.S. GAAP for complete financial statements. In the opinion of management, all normal, recurring adjustments considered necessary for a fair presentation have been included. The consolidated financial statements should be read in conjunction with the audited consolidated financial statements and accompanying notes for the year ended December 31, 2020 included in the Annual Report on Form 10-K the Company filed with the Securities and Exchange Commission (the "SEC") on February 22, 2021. Interim results of operations are not necessarily indicative of the results to be expected for the full year or any other interim periods.

New Accounting Pronouncements, Policy [Policy Text Block]

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): "Simplifying the Accounting for Income Taxes". The ASU simplifies the accounting for income taxes by removing certain exceptions to the general principles in Topic 740. The ASU also clarifies and amends existing guidance to improve consistent application among reporting entities. This ASU is effective for fiscal years beginning after December 15, 2020, including interim periods within that reporting period. We have adopted the guidance effective January 1, 2021 and the impact was immaterial to our financial statements.

Use of Estimates, Policy [Policy Text Block]

Use of EstimatesThe preparation of the consolidated financial statements in conformity with 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.

Segment Reporting, Policy [Policy Text Block]

Segment InformationWe provide truckload services across the United States (U.S.) and parts of Canada. These truckload services are primarily asset-based transportation services in the dry van truckload market, and we also offer truckload temperature-controlled transportation services to select dedicated customers, which are not significant to our operations. Our Chief Operating Decision Maker (“CODM”) oversees and manages all of our transportation services, on a combined basis, including previously acquired entities. As a result of the foregoing, we have determined that we have one segment, consistent with the authoritative accounting guidance on disclosures about segments of an enterprise and related information.

Revenue [Policy Text Block]

The Company recognizes revenue over time as control of the promised services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those services. The delivery of the shipment and completion of the performance obligation allows for the collection of payment generally within 30 days after the delivery date of the shipment for the majority of our customers.

The Company's operations are consistent with those in the trucking industry where freight is hauled twenty-four hours a day and seven days a week, subject to hours of service rules. The Company’s average length of haul is 400-500 miles per trip and

each individual shipment accepted by the Company is considered a separate contract with the performance obligation being the delivery of the freight. Our average length of haul for each load of freight generally equals less than one day of continuous transit time. The Company estimates revenue for multiple-stop loads based on miles run and estimates revenue for single stop loads based on transit time, as the customer simultaneously receives and consumes the benefit provided. The Company hauls freight and earns revenue on a consistent basis throughout the periods presented.

Cash and Cash Equivalents, Policy [Policy Text Block]

Cash and Cash EquivalentsCash equivalents are short-term, highly liquid investments with insignificant interest rate risk and original maturities of three months or less at acquisition.

Property, Plant and Equipment, Policy [Policy Text Block]

Prepaid Tires, Property, Equipment, and DepreciationProperty and equipment are reported at cost, net of accumulated depreciation. Maintenance and repairs are charged to operations as incurred. New tires are capitalized separately from revenue equipment and are reported separately as “Prepaid tires” in the consolidated balance sheets and amortized over two years. Depreciation for financial statement purposes is computed by the straight-line method for all assets other than tractors. We recognize depreciation expense on new tractors (excludes assets acquired in an acquisition) using the 125% declining balance method. Revenue equipment acquired through acquisitions is generally revalued to current market values as of the acquisition date. These acquired assets are depreciated on a straight-line basis aligned with the remaining period of expected use. As acquired equipment is replaced, our fleet returns to our base methods of declining balance depreciation for tractors and straight-line depreciation for trailers. New tractors are depreciated to salvage values of $15,000 while new trailers are depreciated to salvage values of $4,000.

Earnings Per Share, Policy [Policy Text Block]

Earnings per ShareBasic earnings per share is based upon the weighted average common shares outstanding during each year. Diluted earnings per share is based on the basic weighted earnings per share with additional weighted common shares for common stock equivalents.

Income Tax, Policy [Policy Text Block]

Income TaxesWe use the asset and liability method of accounting for income taxes. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to temporary differences between the financial statement carrying amount of existing assets and liabilities and their respective tax basis. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. Such amounts are adjusted, as appropriate, to reflect changes in tax rates expected to be in effect when temporary differences reverse. The effect of changes in tax rates on deferred taxes is recognized in the period that the change is enacted. A valuation allowance is recorded to reduce the Company's deferred tax assets to the amount that is more likely than not to be realized.

Income Tax Uncertainties, Policy [Policy Text Block]

We recognize the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. We record interest and penalties related to unrecognized tax benefits in income tax expense.

Subsequent Events, Policy [Policy Text Block]

Subsequent EventsNo events occurred requiring disclosure other than the repurchase of 37,759 shares of our common stock for $0.6 million subsequent to September 30, 2021.

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Other Intangible, Net and Goodwill (Tables)

9 Months Ended

Sep. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	Amortization period (years)	Gross Amount		Accumulated Amortization		Net intangible assets
		(in thousands)
Customer relationships	15-20	$	23,000	$	5,514	$	17,486
Tradename	0.5-6	12,900		9,100		3,800
Covenants not to compete	1-10	5,300		3,633		1,667
		$	41,200	$	18,247	$	22,953

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Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three months ended September 30, 2021
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	24,466	79,336	$	0.31
Effect of restricted stock	—		28
Diluted EPS	$	24,466	79,364	$	0.31

	Three months ended September 30, 2020
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	20,714	81,370	$	0.25
Effect of restricted stock	—		34
Diluted EPS	$	20,714	81,404	$	0.25

	Nine months ended September 30, 2021
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	58,942	79,795	$	0.74
Effect of restricted stock	—		44
Diluted EPS	$	58,942	79,839	$	0.74

	Nine months ended September 30, 2020
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	53,134	81,530	$	0.65
Effect of restricted stock	—		57
Diluted EPS	$	53,134	81,587	$	0.65

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Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2021

Share-based Payment Arrangement [Abstract]

Disclosure of restricted stock award activity

The following tables summarize our restricted stock award activity for the three and nine months ended September 30, 2021 and 2020.

	Three Months Ended September 30, 2021
	Number of Shares of Restricted Stock Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested at beginning of period	44.2	$	19.83
Granted	5.0	16.79
Vested	(21.5)	18.82
Forfeited	—	—
Outstanding (unvested) at end of period	27.7	$	20.07

	Three Months Ended September 30, 2020
	Number of Shares of Restricted Stock Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested at beginning of period	59.3	$	20.87
Granted	—	—
Vested	(21.1)	20.64
Forfeited	—	—
Outstanding (unvested) at end of period	38.2	$	20.99

	Nine Months Ended September 30, 2021
	Number of Shares of Restricted Stock Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested at beginning of period	59.7	$	20.29
Granted	24.3	18.29
Vested	(56.3)	19.54
Forfeited	—	—
Outstanding (unvested) at end of period	27.7	$	20.07

	Nine Months Ended September 30, 2020
	Number of Shares of Restricted Stock Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested at beginning of period	52.1	$	20.55
Granted	60.2	20.84
Vested	(73.6)	20.59
Forfeited	(0.5)	19.32
Outstanding (unvested) at end of period	38.2	$	20.99

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Income Taxes (Tables)

9 Months Ended

Sep. 30, 2021

Income Tax Disclosure [Abstract]

Reconciliation of Unrecognized Tax Benefits

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:

	2021
	(in thousands)
Balance at January 1, 2021	$	4,937
Additions based on tax positions related to current year	372
Reductions for tax positions of prior years	(179)
Reductions due to lapse of applicable statute of limitations	(533)
Balance at September 30, 2021	$	4,597

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Segment Information (Details)	9 Months Ended
	Sep. 30, 2021 segments
Segment Reporting Information [Line Items]
Number of Segments	1

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Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Contract with Customer, Asset, after Allowance for Credit Loss	$ 1,200		$ 1,200		$ 1,100
Operating Revenue	152,612	$ 162,282	459,142	$ 489,473
Revenue from Contract with Customer, Including Assessed Tax	2,700	3,600	8,600	10,500
fuel surcharge [Member]
Disaggregation of Revenue [Line Items]
Fuel surcharge revenue	$ 19,600	$ 14,400	$ 55,500	$ 47,900

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Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Property, Plant and Equipment [Line Items]
Restricted Cash and Cash Equivalents	$ 16,700	$ 17,300
Restricted Cash included in other current assets	932	1,100	$ 1,097
Restricted Cash included in other assets	$ 15,753	$ 16,200	$ 16,145

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Prepaid Tires, Property, Equipment and Depreciation (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Amortization Period of Tires	two years
Sold revenue equipment in other current assets	$ 1,400	$ 3,400
Tractors [Member]
Property, Plant and Equipment [Line Items]
Property, Plant, and Equipment, Salvage Value	15
Trailers [Member]
Property, Plant and Equipment [Line Items]
Property, Plant, and Equipment, Salvage Value	$ 4

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Other Intangible, Net and Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Amortization Expense	$ 600	$ 600	$ 1,800	$ 1,800
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	0		0
Carrying amount of goodwill	168,295		168,295		$ 168,295
Gross Amount	41,200		41,200
Accumulated Amortization	18,247		18,247
Net Intangible Assets	22,953		22,953
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	23,000		23,000
Accumulated Amortization	5,514		5,514
Net Intangible Assets	17,486		17,486
Tradename
Finite-Lived Intangible Assets [Line Items]
Gross Amount	12,900		12,900
Accumulated Amortization	9,100		9,100
Net Intangible Assets	3,800		3,800
Covenants Not to Compete
Finite-Lived Intangible Assets [Line Items]
Gross Amount	5,300		5,300
Accumulated Amortization	3,633		3,633
Net Intangible Assets	$ 1,667		$ 1,667
Maximum [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period (years)			20 years
Maximum [Member] | Tradename
Finite-Lived Intangible Assets [Line Items]
Amortization period (years)			6 years
Maximum [Member] | Covenants Not to Compete
Finite-Lived Intangible Assets [Line Items]
Amortization period (years)			10 years
Minimum [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period (years)			15 years
Minimum [Member] | Tradename
Finite-Lived Intangible Assets [Line Items]
Amortization period (years)			6 months
Minimum [Member] | Covenants Not to Compete
Finite-Lived Intangible Assets [Line Items]
Amortization period (years)			1 year

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Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income	$ 24,466	$ 20,714	$ 58,942	$ 53,134
Basic EPS, Shares	79,336	81,370	79,795	81,530
Basic EPS, Per Share Amount	$ 0.31	$ 0.25	$ 0.74	$ 0.65
Effect of restricted stock	$ 0	$ 0	$ 0	$ 0
Effect of restricted stock, Shares	28	34	44	57
Diluted EPS, Net Income	$ 24,466	$ 20,714	$ 58,942	$ 53,134
Diluted EPS, Shares	79,364	81,404	79,839	81,587
Diluted EPS, Per Share Amount	$ 0.31	$ 0.25	$ 0.74	$ 0.65

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Equity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Aug. 20, 2021
Share Repurchases [Abstract]
Number of Shares Authorized to be Repurchased	6,700		6,700
Additional Shares Authorized to be Repurchased					3,000
Treasury Stock, Shares, Acquired	1,000	0	1,800	700
Treasury Stock Value, Acquired, Cost Method	$ 16,400		$ 30,900	$ 12,300
Dividends, Common Stock, Cash	41,100	$ 1,600	44,300	4,900
Special Dividend	39,500		39,500
Regular Dividend	$ 1,600	$ 1,600	$ 4,800	$ 4,900
Special Dividend Per Share	$ 0.5		$ 0.5

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Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	May 13, 2021	Jul. 11, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition			9 months 18 days
Restricted Stock Shares Authorized					600,000	900,000
Stock-based Compensation	$ 200	$ 200	$ 1,000	$ 1,500
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 200		$ 200
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Unvested at beginning of year, Number of Restricted Stock Awards (in shares)	44,200	59,300	59,700	52,100
Unvested at beginning of year, Weighted Average Grant Date Fair Value (in dollars)	$ 19.83	$ 20.87	$ 20.29	$ 20.55
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period	5,000.0	0	24,300	60,200
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 16.79	$ 0	$ 18.29	$ 20.84
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	(21,500)	(21,100)	(56,300)	(73,600)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	$ 18.82	$ 20.64	$ 19.54	$ 20.59
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	0	0	0	(500)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 0	$ 0	$ 0	$ 19.32
Outstanding (unvested) at end of year, Number of Restricted Stock Awards (in shares)	27,700	38,200	27,700	38,200
Outstanding (unvested) at end of year, Weighted Average Grant Date Fair Value (in dollars)	$ 20.07	$ 20.99	$ 20.07	$ 20.99

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Long-Term Debt (Details)	9 Months Ended
	Sep. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)	Aug. 31, 2018 USD ($)	Nov. 01, 2016 USD ($)	Nov. 11, 2013 USD ($)
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity, Current	$ 25,000,000		$ 100,000,000	$ 175,000,000	$ 250,000,000
Allowable Amount For Issuance of Letters of Credit	$ 20,000,000		30,000,000		$ 20,000,000
Debt Instrument, Covenant, Leverage Ratio	2
Debt Covenant, Minimum Net Income Requirement	$ 1.00
Debt Covenant, Minimum Tangible Net Worth	250,000,000
Long-term Debt	0	$ 0
Letters of Credit Outstanding, Amount	10,800,000
Line of Credit Facility, Current Borrowing Capacity	14,200,000
Accordion Feature [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity, Current	$ 100,000,000		$ 100,000,000

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Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Effective Income Tax Rate, Percent	26.90%	24.70%	25.80%	24.50%
Valuation Allowance [Abstract]
Valuation Allowance, Amount	$ 0		$ 0		$ 0
Income Tax Uncertainties [Abstract]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	3,600		3,600		3,900
Unrecognized Tax Benefits, Period Increase (Decrease)	0	$ (200)	(300)	$ (300)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	800		800		$ 900
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	100	$ 0	(100)	$ (100)
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance beginning of period			4,937
Additions based on tax positions related to current year			372
Reductions for tax positions of prior years			(179)
Reductions due to lapse of applicable statute of limitations			(533)
Balance end of period	4,597		4,597
Maximum [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	1,000		1,000
Minimum [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 0		$ 0

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Commitments and Contingencies (Details) $ in Millions	Sep. 30, 2021 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Unrecorded Unconditional Purchase Obligation	$ 42.9

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Subsequent Events (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021 USD ($) shares
Subsequent Events [Abstract]
Repurchase of Common Stock, Shares | shares	37,759
Payments for Repurchase of Common Stock | $	$ 600