10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

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

For the Fiscal Year Ended December 31, 2020

[  ]    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)

319-626-3600

(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

Securities Registered Pursuant to section 12(g) of the Act:    None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.  

Yes [X] No [  ]

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 of Section 15(d) of the Act.

Yes [ ] No [X]

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, a smaller reporting company, or emerging growth company. See the definitions 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 growth 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 has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. [X]

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

Yes [ ] No [X]

The aggregate market value of voting common stock held by non-affiliates of the registrant as of June 30, 2020 was $0.9 billion. In making this calculation the registrant has assumed, without admitting for any purpose, that the Gerdin family, our directors, and our executive officers, as a group, and no other persons, are affiliates. As of February 15, 2021 there were 79,977,102 shares of the Company’s common stock ($0.01 par value) outstanding, excluding 53,700 shares of unvested restricted stock.

Portions of the Proxy Statement for the annual shareholders’ meeting to be held on May 13, 2021 are incorporated by reference in Part III of this report.

HEARTLAND EXPRESS, INC.

AND SUBSIDIARIES

TABLE OF CONTENTS

PART I			Page
	Item 1.	Business	1
	Item 1A.	Risk Factors	12
	Item 1B.	Unresolved Staff Comments	23
	Item 2.	Properties	23
	Item 3.	Legal Proceedings	24
	Item 4.	Mine Safety Disclosures	24
PART II
	Item 5.	Market for the Registrant's Common Equity, Related Stockholder Matters, and Issuer Purchases of Equity Securities	25
	Item 6.	Selected Financial Data	26
	Item 7.	Management's Discussion and Analysis of Financial Condition and Results of Operations	28
	Item 7A.	Quantitative and Qualitative Disclosures about Market Risk	38
	Item 8.	Financial Statements and Supplementary Data	38
	Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	38
	Item 9A.	Controls and Procedures	38
	Item 9B.	Other Information	39
PART III
	Item 10.	Directors, Executive Officers, and Corporate Governance	40
	Item 11.	Executive Compensation	40
	Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	40
	Item 13.	Certain Relationships and Related Transactions, and Director Independence	40
	Item 14.	Principal Accounting Fees and Services	41
PART IV
	Item 15.	Exhibits, Financial Statement Schedule	42
	Item 16.	Form 10-K Summary	44
SIGNATURES			45

PART I

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Annual Report 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 those sections and the Private Securities Litigation Reform Act of 1995, as amended. All statements, other than statements of historical or current 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 statements of assumptions underlying any of the foregoing. In this Annual Report, statements relating to expected sources of working capital, liquidity and funds for meeting equipment purchase obligations, expected capital expenditures and incurrence of debt, future acquisitions and dispositions of and upgrades to revenue equipment, future market for used equipment, future trucking capacity, expected freight demand and volumes, future rates and prices, future impact of the acquisition of Millis Transfer and the impact of its driver training programs, future depreciation and amortization, future asset utilization, expected tractor and trailer count, expected fleet age, future driver market, expected gains on sale of equipment, expected driver compensation, expected independent contractor usage, including the classification of our independent contractors, expected rent expense, expected changes to financial controls, planned allocation of capital, future equipment costs, future income taxes, future insurance and claims, future growth, future safety performance, expected regulatory action and the impact of regulatory changes, future compliance with law, future litigation and our potential exposure for pending legal proceedings, future goodwill impairment, future inflation, future share prices, dividends, and repurchases, if any, future fuel expense and the future effectiveness of fuel surcharge programs, and the impacts of the COVID-19 pandemic on our business operations and driver recruiting and retention, among others, are forward-looking statements. 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 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. Known factors that could cause or contribute to such differences include, but are not limited to, those discussed in the section entitled “Risk Factors,” set forth below. Readers should review and consider the factors discussed in “Risk Factors” of this Annual Report, 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 Annual Report.  You are cautioned not to place undue reliance on such forward-looking statements.  We expressly disclaim any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements contained herein to reflect any change in our expectations with regard thereto or any change in the events, conditions, or circumstances on which any such statement is based.

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

ITEM 1.    Business

General

Heartland Express, Inc. is a holding company incorporated in Nevada, which owns directly or through subsidiaries, all of the stock of Heartland Express, Inc. of Iowa, Heartland Express Services, Inc., Heartland Express Maintenance Services, Inc., Midwest Holding Group, LLC and Millis Transfer, LLC. On December 31, 2018, A & M Express, Inc. was merged into Heartland Express, Inc. of Iowa. On August 26, 2019, Heartland Express, Inc. of Iowa acquired Midwest Holding Group, Inc. and Millis Real Estate Leasing, LLC (together, "Millis Transfer"), a truckload carrier headquartered in Black River Falls, Wisconsin. Effective December 31, 2019, Millis Transfer, Inc. and Midwest Holding Group, Inc. were converted to Millis Transfer, LLC and Midwest Holding Group, LLC, respectively. Further, effective December 31, 2019, Millis Real Estate Leasing, LLC, Rivera Real Estate, LLC, and Great River Leasing, LLC were merged into Millis Transfer, LLC.

We, together with our subsidiaries, are a short-to-medium haul truckload carrier (predominately 500 miles or less per load). We operate our consolidated operations under the brand names of Heartland Express and Millis Transfer. We primarily provide nationwide asset-based dry van truckload service for major shippers from Washington to Florida and New England to

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California. Approximately 99.9% of our operating revenue is derived from shipments within the United States ("U.S.") with the remainder being Canada. We do not have any operations in Mexico. We focus on providing high quality service to targeted customers with a high density of freight in our regional operating areas. We also offer limited temperature-controlled truckload services, which are not significant to our operations and have been reduced to serving select dedicated customers specifically in the western part of the U.S. since 2019. Further, we do not operate a non-asset-based freight brokerage business. We generally earn revenue based on the number of miles per load delivered and the revenue per mile paid.  We believe the keys to success are maintaining high levels of customer service and safety, which are generally 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.

Our headquarters is located in North Liberty, Iowa, in a low-cost environment with ready access to a skilled, educated, and industrious workforce. Our other terminals are located near major shipping corridors nationwide, affording proximity to customer locations, driver domiciles, and distribution centers. Approximately 80% of our terminals are located within 200 miles of the 25 largest cities in the U.S. We believe our geographic reach and terminal locations assist us with driver recruiting and retention, efficient fleet maintenance, and consistent customer engagement.

We were founded by Russell A. Gerdin in 1978 and became publicly traded in November 1986. Over the thirty-four years from 1986 to 2020, we have grown our revenues to $645.3 million from $21.6 million and our net income has increased to $70.8 million from $3.0 million. Much of our growth has been attributable to expanding service for existing customers, acquiring new customers, and continued expansion of our operating regions through new and existing customers as well as strategic acquisitions. More information regarding our total assets, revenues and profits for the past three and five years can be found in our “Consolidated Statements of Comprehensive Income” and “Selected Financial Data” that are included in this report.

In addition to 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 seven 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. Our Chief Operating Decision Maker (“CODM”), Michael Gerdin, our President and Chief Executive Officer, oversees and manages all of our transportation services, on a combined basis, including previously acquired entities.

Operations

Our operations department focuses on the successful execution of customer expectations and providing consistent opportunities for our drivers, in conjunction with maximizing equipment utilization. These objectives require a combined effort of marketing, regional operations managers, and fleet management.

Our customer service department is responsible for maintaining the continuity between the customer’s needs and our ability to meet those needs by communicating the customer’s expectations to the fleet management group. Collectively, the operations group (customer service and fleet management) and marketing are charged with developing customer relationships, ensuring service standards, coordinating proper freight-to-capacity balancing, trailer asset management, and daily tactical decisions to match customer demand with revenue equipment availability across our entire network. Fleet management assigns orders to drivers based on well-defined criteria, such as United States Department of Transportation (the “DOT”) hours of service ("HOS") compliance, customer requirements, equipment utilization, driver “home time”, limiting non-revenue miles, and equipment maintenance needs.

Fleet management employees are responsible for driver management and development. Additionally, they maximize the capacity that is available to meet the service needs of our customers. Their responsibilities include meeting the needs of the drivers within the standards that have been set by the organization and communicating the requirements of the customers to the drivers on each order to ensure successful execution.

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Serving the short-to-medium haul market permits us to use primarily single rather than team drivers and dispatch most loads directly from origin to destination without an intermediate equipment change other than for driver scheduling purposes. Approximately 75% of our loads are less than 500 miles in length of haul. Substantially all of our revenue is, and for the last three fiscal years has been, generated from within the U.S. with immaterial revenue derived from Canada. We do not have, nor have we during the last three fiscal years had, any long-lived assets permanently located outside the U.S.

We operate twenty-six terminal facilities throughout the contiguous U.S. in addition to our terminal and corporate headquarters in North Liberty, Iowa. These terminal locations are strategically located to concentrate on regional freight movements generally within a 500-mile radius of the terminals. This allows us to meet the needs of our customers in those regions while allowing our drivers to primarily stay within an operating region which provides them with more “home time.” This also allows us to service and maintain revenue equipment at our facilities on a frequent basis.

Personnel at the individual terminal locations manage these operations based on the overall corporate operating and maintenance goals and objectives. Our CODM evaluates the operational efficiencies of the Company's transportation services and operating performance of terminals on a combined basis based on consolidated operating ratio and reports detailing all of the Company’s load movements, rate per mile, and non-revenue miles. Both Heartland Express and Millis Transfer operate centralized computer networks and regular communication to achieve enterprise-wide load coordination.

We emphasize customer satisfaction through on-time performance, dependable late-model equipment, and consistent equipment availability to meet the volume requirements of our customers. We also maintain a trailer to tractor ratio that allows us to position trailers at customer locations for convenient loading and unloading. Most of the freight we transport is non-perishable and predominantly does not require driver handling. These factors help minimize waiting time, which increases tractor utilization and promotes driver retention.

Customers, Marketing, Safety and Diversity

We seek to transport freight that will complement traffic in our existing service areas and remain consistent with our focus on short-to-medium haul and regional distribution markets.  Management believes that building lane density in our primary traffic lanes will minimize empty miles and enhance driver “home time.”

We target customers with multiple, time-sensitive shipments, including those utilizing “just-in-time” manufacturing and inventory management. In seeking these customers, we have positioned our business as a provider of premium service at compensatory rates, rather than competing solely on the basis of price.  We believe our reputation for quality service, reliable equipment, and equipment availability makes us a core carrier for many of our customers.  This past year we once again were recognized for customer service by several of our customers as a testament to our service standards. These awards include:

•FedEx Express Core Carrier of the Year (10 years in a row)

•FedEx Express Platinum Award (99.96% On-Time Delivery)

•FedEx Ground Superior Performance Award

•Lowe's - One-Way Store Carrier of the Year

•MillerCoors National Logistics & Transportation Supplier of the Year

•Quaker/Gatorade - Central West Region Carrier of the Year

•Unilever - 2019 Carrier of the Year

•DHL - 2019 National Truckload Carrier of the Year

•Hills Pet Nutrition for Commitment, Dedication, and Outstanding Service

During 2020, we were also recognized with the following safety, operational, community service, and environmental awards:

•BP Driving Safety Standards Award 2019

•Logistics Management Quest for Quality Award (our seventeenth award in eighteen years)

•Commercial Carrier Journal Top 250 Award (#39)

•Wreaths Across America Honor Fleet

•U.S. EPA SmartWay Excellence Award

Our primary customers include retailers and manufacturers. Our 25, 10, and 5 largest customers accounted for approximately 74%, 50%, and 34% of our operating revenues, respectively, in 2020. During 2019, our 25, 10, and 5 largest customers were approximately 75%, 52%, and 36%, of our operating revenues respectively. Our broad capacity network and customer base has allowed us to remain appropriately diversified and no customer accounted for more than 10% of our operating revenues in 2020. One customer accounted for more than 10% of our operating revenues in 2019 at 10.9% and 2018 at 12.5%.

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Seasonality

The nature of our primary traffic (appliances, automotive parts, consumer products, paper products, packaged foodstuffs, and retail goods) generally causes it to be distributed with relative uniformity throughout the year. However, seasonal variations associated with the winter holiday season have historically resulted in increased shipment volumes by retail customers during the fourth quarter, followed by reduced shipment volumes by customers in several industries after the holiday season. In addition, our operating expenses historically have been higher during the winter months due to decreased fuel efficiency, increased colder weather-related equipment maintenance and repairs, and increased claims and costs attributed to higher accident frequency from harsh weather.

Drivers, Independent Contractors, and Other Employees

We rely on our workforce in achieving our business objectives. During the year ended December 31, 2020, we employed an average of approximately 3,780 people compared to approximately 4,050 people during the year ended December 31, 2019. The decrease in employees as of December 31, 2020 was generally due to a decline in drivers due to the challenging qualified driver recruiting and retention environment experienced during 2020 along with the ongoing right-sizing of support staff following the acquisition of Millis Transfer. We also contracted with independent contractors to provide and operate tractors which provides us additional revenue equipment capacity, although not material to our operations. Independent contractors own their own tractors and are responsible for all associated expenses, including financing costs, fuel, maintenance, insurance, and highway use taxes. For the year ended December 31, 2020, independent contractors accounted for approximately 0.7% of our total miles compared to 1.2% in 2019.

Historically our strategy for both employee drivers and independent contractors is to (i) hire and engage safe and experienced drivers (the majority of drivers we hire and engage must have at least six months of qualifying over-the-road experience); (ii) promote retention with an industry-competitive compensation package, positive working conditions, and freight that requires little or no handling; and (iii) minimize safety problems through careful screening, mandatory drug testing, continuous training, the use of electronic logging devices ("ELDs"), and financial rewards for accident-free driving. We also seek to minimize turnover of our employee drivers by providing quality pay for their time with additional pay for safety, modern equipment, and by regularly scheduling "home time." Our drivers are generally compensated on the basis of miles driven including empty miles. This provides an incentive for us to minimize empty miles and at the same time does not penalize drivers for inefficiencies of operations that are beyond their control.

In addition to hiring experienced drivers, the acquisition of Millis Transfer in 2019, included a CDL training school. They have operated Millis Training Institute since 1989. Millis Training Institute is a driver training program dedicated to identifying, training, and developing capable individuals into obtaining their commercial driving license and becoming professional truck drivers. We operate in a cyclical industry and competition for drivers, which has historically been intense, escalates during periods of increased freight demand. Competition for professional drivers that meet our qualification standards is challenging due to the current trend of decreasing numbers of qualified drivers in our industry. This driver training program currently provides a source of qualified professional drivers for Millis Transfer and will become an additional source of potential professional drivers for legacy Heartland as we expect to expand upon the current training program in 2021.

We are not a party to a collective bargaining agreement.  We believe that we have good relationships with our employees.

Driver Compensation

Our comprehensive driver compensation 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 generally includes guaranteed minimum pay for our newest drivers, 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. In addition to the scheduled pay increases based on years of continued service, we have increased the base pay package three times during the last four years. We believe that our driver compensation package, compared to others in our industry, 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. We also invest a significant amount of capital in our terminal facilities as we strive to offer our driver employees up to date and convenient amenities throughout our terminal network across the country while they are away from home.

Revenue Equipment

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Our industry is very capital intensive as it relates to tractors and trailers. One of our core operating goals is to maintain a modern fleet of tractor and trailer equipment. The overall performance and reliability of tractor equipment typically has increased with each new model year of tractors that we have acquired in the last 5 years. By maintaining late model year tractors, a low average age, we experience better operating performance, our drivers benefit from the latest safety technologies and features that we choose to equip our tractors with, helps us with appeal to new drivers, and retention of current drivers. Deploying this core strategy, along with idle management technology, also allows us to reduce our carbon footprint. This is evidenced by us being awarded the U.S. Environmental Protection Agency SmartWay Excellence Award six times in the last eight years.

We have historically owned our tractors and trailers and do not lease revenue equipment, other than when we have acquired companies that have utilized leases. Historically, we have paid cash for the acquisition of new revenue equipment. These strategies allow us the flexibility to buy and sell tractors (and trailers) opportunistically to capitalize on new and used equipment markets, size our fleet to the volume of attractive freight, and manage cash tax expense. One method we use to accomplish these goals is to depreciate our new tractors (excludes assets acquired through an acquisition) for financial reporting purposes using the 125% declining balance method, in which depreciation is higher in early periods and tapers off in later periods. We believe this method more accurately reflects actual asset values and affords us the flexibility to sell tractors at most points during their life cycle without experiencing losses. In addition, the decline in depreciation during later periods is typically offset by increased repairs and maintenance expense as the tractors age, which keeps our total operating costs more uniform over the operating life of the equipment. Trailers are depreciated using the straight-line 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. We believe our revenue equipment strategy is sound over the long term. However, it can contribute to volatility in gain on sale of equipment and quarterly earnings per share.

At December 31, 2020, the majority of our operating tractor fleet was equipped with idle management controls. All over-the-road tractors are equipped with mobile communication systems that comply with the latest ELD regulations. This technology allows for efficient communication with our drivers regarding freight and safety, and provides the ability to manage the needs of our customers based on real-time information on load status. Our mobile communication systems also allow us to obtain information regarding equipment for better planning and efficient maintenance time as well as information regarding driver performance and efficiency.

As of December 31, 2020 the average age of our tractor fleet was 1.7 years compared to 1.8 years at December 31, 2019. We have historically operated the majority of our tractors while under warranty to minimize repair and maintenance cost and reduce service interruptions caused by breakdowns. The average age of our trailer fleet was 3.7 years at December 31, 2020 compared to 3.6 years at December 31, 2019.  

We obtain additional tractor capacity through the use of independent contractors who own their own tractor equipment, although our use of independent contractors is not material to our overall operations. Independent contractors are responsible for the maintenance of their equipment. We utilized revenue equipment operating leases following our acquisition in 2017 until these leases ended on March 31, 2019.

The "Regulation" section in this Item 1 of Part I of this Annual Report discusses in detail several regulations that have impacted and could continue to affect our cost and use of revenue equipment.

Fuel

We purchase diesel fuel ("fuel") over-the-road through a network of fuel stops throughout the U.S. at which we have negotiated price discounts. In addition, bulk fuel sites are maintained at the majority of our twenty-seven terminal locations. We strategically manage fuel purchase decisions based on pricing of over-the-road fuel prices, bulk fuel prices, and the routing of equipment. Both above ground and underground storage tanks are utilized at the bulk fuel sites. We believe exposure to environmental cleanup costs is minimized by periodic inspection and monitoring of the tanks. We also have insurance policies in place for the operation of our tanks located at terminal locations. Increases in fuel prices can have an adverse effect on the results of operations. We have fuel surcharge agreements with most customers that enable us to pass through most long-term price increases.  For the years ended December 31, 2020, and 2019, fuel expense was $86.1 million and $101.9 million, or 15.6% and 20.3%, respectively, of our total operating expenses.  For the years ended December 31, 2020 and 2019, fuel surcharge revenues were $61.7 million and $75.0 million, respectively. Department of Energy (“DOE”) average price of fuel decreased 16.5% in 2020 compared to 2019, which had a corresponding positive impact on our net fuel cost, before the impacts

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of improved fleet efficiency, for the year ended December 31, 2020 compared to 2019. Fuel consumed by empty and out-of-route miles and by truck engine idling time is not recoverable and therefore any increases or decreases in fuel costs related to empty and out-of-route miles and idling time will directly impact our operating results. The decrease in the DOE diesel fuel prices seen in 2020 was mostly due to a 15.7% average price decrease during the second quarter of 2020 compared to the first quarter of 2020. Fuel prices remained fairly consistent during the third and fourth quarters of 2020, although they began to increase in late 2020. This trend of fuel price increases has continued through February 2021. The latest DOE diesel fuel price in February 2021 is up 8.9% compared to the end of 2020 and is up 12.7% compared to the 2020 yearly average.

Competition and Industry

The truckload industry is highly competitive and fragmented with thousands of carriers of varying sizes. We compete with other truckload carriers; primarily those serving the regional, short-to-medium haul market. Logistics providers, railroads, less-than-truckload carriers, and private fleets provide additional competition but to a lesser extent. The industry is highly competitive based primarily upon freight rates, qualified drivers, service, and equipment availability. We specialize in time-sensitive shipments, including "just-in-time" and similar types of freight. We provide premium service at compensatory rates, rather than competing solely on the basis of price.

We operate in a cyclical industry. Demand for our freight services was elevated throughout all of 2018 (peak in mid-2018 and began to decline in the second half of 2018), which resulted in tight freight capacity. Throughout 2019, the general demand for freight services was at a level much lower than what was experienced throughout 2018. 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 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. This led to an overall increase in freight demand and favorable pricing environment as freight rates increased throughout the second half of 2020.

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. 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 previously discussed, Millis Transfer's driver training program will provide 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 implemented three driver pay increases within the past four years (October 2017, July 2018, and October 2020). 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 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.

Safety and Risk Management

Our safety program is designed to minimize accidents and to conduct our business within governmental safety regulations. We communicate safety issues with drivers on a regular basis and emphasize safety through equipment specifications and regularly scheduled maintenance intervals. Our drivers are compensated and recognized for achieving and maintaining a safe driving record.

The primary risks associated with our business include cargo loss and physical damage, personal injury, property damage, and workers’ compensation claims. We self-insure a portion of the exposure related to all of the aforementioned risks. Insurance coverage, including self-insurance retention levels, is evaluated on an annual basis. We actively participate in the settlement of each claim incurred.

We act as a self-insurer for auto liability involving property damage, personal injury, or cargo based on defined insurance retention of $1.0 million under our Millis policy or $2.0 million under our Heartland policy for any individual claim based on the insured party, accident date, and circumstances of the loss event. Within the Heartland policy, there is an additional one-time $1.0 million aggregate self-insurance corridor for auto liability claims between $2.0 million and $3.0 million. For both Heartland and Millis claims, liabilities in excess of these deductibles are covered by insurance up to $60.0 million, including

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retention of 50% of exposure from $5.0 million to $10.0 million. We retain any liability in excess of $60.0 million. We act as a self-insurer for workers' compensation liability claims based on defined insurance retention of $1.0 million. We act as a self-insurer for property damage to our tractors and trailers. We maintain a general insurance coverage policy for our terminal facilities with a $0.25 million deductible.

Regulation

Transportation Regulations

We are a common and contract motor carrier regulated by the DOT and various state and local agencies. The DOT generally governs matters such as safety requirements, registration to engage in motor carrier operations, insurance requirements, and periodic financial reporting. Our Company drivers and independent contractors also must comply with the safety and fitness regulations of the DOT, including those relating to drug and alcohol testing and HOS. Such matters as weight and equipment dimensions are also subject to U.S. regulations. We also may become subject to new or more restrictive regulations relating to fuel emissions, drivers' HOS, ergonomics, or other matters affecting safety or operating methods. Other agencies, such as the Environmental Protection Agency ("EPA") and the Department of Homeland Security ("DHS") also regulate our equipment, operations, and drivers.

The DOT, through the Federal Motor Carrier Safety Administration (“FMCSA”), imposes safety and fitness regulations on us and our drivers, including rules that restrict driver HOS. Changes to such HOS rules can negatively impact our productivity and affect our operations and profitability by reducing the number of hours per day or week our drivers may operate and/or disrupting our network. However, in August 2019, the FMCSA issued a proposal to make changes to its hours-of-service rules that would allow truck drivers more flexibility with their 30-minute rest break and with dividing their time in the sleeper berth. It also would extend by two hours the duty time for drivers encountering adverse weather, and extend the shorthaul exemption by lengthening the drivers’ maximum on-duty period from 12 hours to 14 hours. In June 2020, the FMCSA adopted a final rule substantially as proposed, which became effective in September 2020. Since that time, we have seen a slight increase in the productivity of our drivers. Any future changes to HOS rules could materially and adversely affect our operations and profitability.

There are two methods of evaluating the safety and fitness of carriers. The first method is the application of a safety rating that is based on an onsite investigation and affects a carrier’s ability to operate in interstate commerce. We currently have a satisfactory DOT safety rating under this method, which is the highest available rating under the current safety rating scale. If we received a conditional or unsatisfactory DOT safety rating, it could adversely affect our business, as some of our existing customer contracts require a satisfactory DOT safety rating. In January 2016, the FMCSA published a Notice of Proposed Rulemaking outlining a revised safety rating measurement system which would replace the current methodology. Under the proposed rule, the current three safety ratings of “satisfactory,” “conditional,” and “unsatisfactory” would be replaced with a single safety rating of “unfit.” Thus, a carrier with no rating would be deemed fit. Moreover, data from roadside inspections and the results of all investigations would be used to determine a carrier’s fitness on an ongoing basis. This would replace the current methodology of determining a carrier’s fitness based solely on infrequent comprehensive onsite reviews. The proposed rule underwent a public comment period that ended in June 2016 and several industry groups and lawmakers expressed their disagreement with the proposed rule, arguing that it violates the requirements of the Fixing America's Surface Transportation Act (“FAST Act”) and that the FMCSA must first finalize its review of the CSA scoring system, described in further detail below. Based on this feedback and other concerns raised by industry stakeholders, in March 2017, the FMCSA withdrew the Notice of Proposed Rulemaking related to the new safety rating system. In its notice of withdrawal, the FMCSA noted that a new rulemaking related to a similar process may be initiated in the future. Therefore, it is uncertain if, when, or under what form any such rule could be implemented. The FMCSA also recently indicated its intent to perform a new study on the causation of crashes. Although it remains unclear whether such a study will ultimately be undertaken and completed, the results of such a study could spur further proposed and/or final rules in regards to safety and fitness.

In addition to the safety rating system, the FMCSA has adopted the Compliance Safety Accountability program (“CSA”) as an additional safety enforcement and compliance model that evaluates and ranks fleets on certain safety-related standards. The CSA program analyzes data from roadside inspections, moving violations, crash reports from the last two years, and investigation results. The data is organized into seven categories. Carriers are grouped by category with other carriers that have a similar number of safety events (e.g., crashes, inspections, or violations) and carriers are ranked and assigned a rating percentile to prioritize them for interventions if they are above a certain threshold. Currently, these scores do not have a direct impact on a carrier’s safety rating. However, the occurrence of unfavorable scores in one or more categories may (i) affect driver recruiting and retention by causing high-quality drivers to seek employment with other carriers, (ii) cause our customers to direct their business away from us and to carriers with higher fleet rankings (iii), subject us to an increase in compliance

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reviews and roadside inspections, or (iv) cause us to incur greater than expected expenses in our attempts to improve unfavorable scores, any of which could adversely affect our results of operations and profitability.

Under CSA, these scores were initially made available to the public in five of the seven categories. However, pursuant to the FAST Act, which was signed into law in December 2015, the FMCSA was required to remove from public view the previously available CSA scores while it reviews the reliability of the scoring system. During this period of review by the FMCSA, we will continue to have access to our own scores and will still be subject to intervention by the FMCSA when such scores are above the intervention thresholds. We will continue to monitor our CSA scores and compliance through results from roadside inspections and other data available to detect positive or negative trends in compliance issues on an ongoing basis. A study was conducted and delivered to the FMCSA in June 2017 with several recommendations to make the CSA program more fair, accurate, and reliable. In late June 2018, the FMCSA provided a report to Congress outlining the changes it may make to the CSA program in response to the study. Such changes include the testing and possible adoption of a revised risk modeling theory, potential collection and dissemination of additional carrier data, and revised measures for intervention thresholds. The adoption of such changes is contingent on the results of the new modeling theory and additional public feedback. Therefore, it is unclear if, when, and to what extent such changes to the CSA program will occur. However, any changes that increase the likelihood of us receiving unfavorable scores could adversely affect our results of operations and profitability.

In May 2020, the FMCSA announced that effective immediately it is making permanent a pilot program that will not count a crash in which a motor carrier was not at fault when calculating the carrier’s safety measurement profile, called the Crash Preventability Demonstration Program (“CPDP”). The CPDP expands the types of eligible crashes, modify the Safety Measurement System to exclude crashes with not preventable determinations from the prioritization algorithm and note the not preventable determinations in the Pre-Employment Screening Program. Under the program, carriers with eligible crashes that occurred on or after August 2019, may submit a Request for Data Review with the required police accident report and other supporting documents, photos or videos through the FMCSA’s DataQs website. If the FMCSA determines the crash was not preventable, it will be listed on the Safety Measurement System but not included when calculating a carrier’s Crash Indicator Behavior Analysis and Safety Improvement Category measure in SMS. Additionally, the not preventable determinations will be noted on a driver’s Pre-Employment Screening Program report.

The FMCSA published a final rule in December 2015 that required the use of ELDs or automatic onboard recording devices ("AOBRs") by nearly all carriers by December 2017 (the "2015 ELD Rule"). Enforcement of the 2015 ELD Rule was phased in, as states did not begin putting tractors out of service for non-compliance until April 2018. However, carriers were subject to citations, on a state-by-state basis, for non-compliance with the rule after the December 2017 compliance deadline. The use of AOBRs was permitted until December 2019, at which time the use of ELDs was required. Since we had proactively installed AOBRs on 100% of our tractor fleet, implementation of the 2015 ELD Rule did not impact our operations or profitability or our use of AOBRs. We had ELDs (not AOBRs) installed on 100% of our fleet by the December 2019 deadline. We believe that more effective HOS enforcement under the 2015 ELD Rule may improve our competitive position by causing all carriers to adhere more closely to HOS requirements and may further reduce industry capacity.

In the aftermath of the September 11, 2001 terrorist attacks, the Department of Homeland Security ("DHS") and other federal, state, and municipal authorities implemented and continue to implement various security measures, including checkpoints and travel restrictions on large trucks. The U.S. Transportation Security Administration ("TSA") adopted regulations that require determination by the TSA that each driver who applies for or renews his or her license for carrying hazardous materials is not a security threat. This could reduce the pool of qualified drivers who are permitted to transport hazardous waste, which could require us to increase driver compensation, limit our fleet growth, or allow trucks to sit idle. These regulations also could complicate the matching of available equipment with hazardous material shipments, thereby increasing our response time on customer orders and our non-revenue miles. As a result, it is possible we could fail to meet the needs of our customers or could incur increased expenses to do so. While transporting hazardous materials subjects us to a wide array of regulations, the number of hazardous material shipments we make is insignificant relative to our total number of shipments.

In December 2016, the FMCSA issued a final rule establishing a national clearinghouse for drug and alcohol testing results and requiring motor carriers and medical review officers to provide records of violations by commercial drivers of FMCSA drug and alcohol testing requirements. Motor carriers are required to query the clearinghouse to ensure drivers and driver applicants do not have violations of federal drug and alcohol testing regulations that prohibit them from operating commercial motor vehicles. The final rule became effective in January 2017, with a compliance date in January 2020. In December 2019, however, the FMCSA announced a final rule extending by three years the date for state driver’s licensing agencies to comply with certain Drug and Alcohol Clearinghouse requirements. The December 2016 commercial driver’s license rule required states to request information from the Clearinghouse about individuals prior to issuing, renewing, upgrading, or transferring to a CDL. This new action will allow states’ compliance with the requirement, which was set to begin January 2020, to be delayed until January 2023. That being said, the FMCSA has indicated that it will allow states the option to voluntarily query

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Clearinghouse information beginning January 2020. The compliance date of January 2020 remained in place for all other requirements set forth in the Clearinghouse final rule. However, upon implementation, the rule may reduce the number of available drivers in an already constrained driver market.

In September 2020, the Department of Health and Human Services (“DHHS”) announced proposed mandatory guidelines to allow employers to drug test truck drivers and other federal workers for pre-employment and random testing using hair specimens. However, the proposal also requires a second sample using either urine or an oral swab test if a hair test is positive, if a donor is unable to provide a sufficient amount of hair for faith-based or medical reasons, or due to an insufficient amount or length of hair. The proposal specifically requires that the second test be done simultaneously at the collection event or when directed by the medical review officer after review and verification of laboratory-reported results for the hair specimen. DHHS indicated the two-test approach is intended to protect federal workers from issues that have been identified as limitations of hair testing, and related legal deficiencies identified in two prior court cases. The American Trucking Associations (“ATA”) has voiced concerns with the new guidelines, characterizing them as “weak” and “misguided,” and specially taking issue with the second sample requirement, which the ATA feels diminishes the value of hair testing. It is unclear if, and when, a final rule may be put in place. Any final rule may reduce the number of available drivers.

In November 2015, the FMCSA published its final rule related to driver coercion, which took effect in January 2016. Under this rule, carriers, shippers, receivers, or transportation intermediaries that are found to have coerced drivers to violate certain FMCSA regulations (including HOS rules) may be fined up to $16,000 for each offense. In addition, other rules have been recently proposed or made final by the FMCSA, including (i) a rule requiring the use of speed limiting devices on heavy duty tractors to restrict maximum speeds, which was proposed in 2016, and (ii) a rule setting forth minimum driver training standards for new drivers applying for commercial driver’s licenses for the first time and to experienced drivers upgrading their licenses or seeking a hazardous materials endorsement, which was made final in December 2016, with a compliance date in February 2020. However, in May 2020, the FMCSA approved an interim rule delaying implementation of the final rule by two years which extends the compliance date to February 2022. In July 2017, the DOT announced that it would no longer pursue a speed limiter rule, but left open the possibility that it could resume such a pursuit in the future. In 2019, U.S. Congressional representatives proposed a similar rule related to speed-limiting devices. The effect of these rules, to the extent they become effective, could result in a decrease in fleet production and driver availability, either of which could adversely affect our business or operations. Certain U.S. Congressional representatives proposed a bill in 2019 that would lower the age requirement from 21 to 18 for interstate commercial driving if certain requirements are met, which received support from the ATA during a February 2020 Senate hearing. It is unclear how long the process of finalizing such a bill will take, however, if one comes to fruition at all. Meanwhile, the FMCSA announced in September 2020 that it is seeking public comment on a new pilot program to allow drivers aged 18, 19, and 20 to operate commercial motor vehicles in interstate commerce.

In March 2014, the Ninth Circuit Court of Appeals held that California state wage and hour laws are not preempted by federal law. The case was appealed to the Supreme Court of the United States, which in May 2015 refused to review the case, and accordingly, the Ninth Circuit Court of Appeals decision stood. However, in December 2018, the FMCSA granted a petition filed by the ATA and in doing so determined that federal law does preempt California’s wage and hour laws, and interstate truck drivers are not subject to such laws. The FMCSA’s decision has been appealed by labor groups and multiple lawsuits have been filed in federal courts seeking to overturn the decision, and while the Ninth Circuit Court of Appeals has since upheld the FMCSA's decision, it still remains uncertain whether it will stand. Other current and future state and local laws, including laws related to employee meal breaks and rest periods, may also vary significantly from federal law. Further, driver piece rate compensation, which is an industry standard, has been attacked as non-compliant with state minimum wage laws and lawsuits have recently been filed and/or adjudicated against carriers demanding compensation for sleeper berth time, layovers, rest breaks and pre-trip and post-trip inspections, the outcome of which could have major implications for the treatment of time that drivers spend off-duty (whether in a truck’s sleeper berth or otherwise) under applicable wage laws. Both of these issues are adversely impacting the Company and the industry as a whole, with respect to the practical application of the laws, thereby resulting in additional cost. As a result, we, along with other companies in the industry, could become subject to an uneven patchwork of laws throughout the U.S. Federal legislation has been proposed in the past to preempt certain state and local laws; however, passage of such legislation is uncertain. If federal legislation is not passed, we will either need to comply with the most restrictive state and local laws across our entire network, or overhaul our management systems to comply with varying state and local laws. Either solution could result in increased compliance and labor costs, driver turnover, decreased efficiency, and amplified legal exposure.

Tax and other regulatory authorities, as well as independent contractors themselves, have increasingly asserted that independent contractor drivers in the trucking industry are employees rather than independent contractors, for a variety of purposes, including income tax withholding, workers' compensation, wage and hour compensation, unemployment, and other issues. Federal legislators have introduced legislation in the past to make it easier for tax and other authorities to reclassify independent contractor drivers as employees, including legislation to increase the recordkeeping requirements for those that engage independent contractor drivers and to heighten the penalties of companies who misclassify their employees and are found to have violated employees' overtime and/or wage requirements. Additionally, federal legislators have sought to abolish the

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current safe harbor allowing taxpayers meeting certain criteria to treat individuals as independent contractors if they are following a long-standing, recognized practice, extend the Fair Labor Standards Act to independent contractors, and impose notice requirements based upon employment or independent contractor status and fines for failure to comply. Some states have put initiatives in place to increase their revenues from items such as unemployment, workers' compensation, and income taxes, and a reclassification of independent contractor drivers as employees would help states with these initiatives.

Recently, courts in certain states have issued decisions that could result in a greater likelihood that independent contractors would be judicially classified as employees in such states. In September 2019, California enacted A.B. 5 (“AB5”), a new law that changed the landscape of the state’s treatment of employees and independent contractors. AB5 provides that the three-pronged “ABC Test” must be used to determine worker classification in wage-order claims. Under the ABC Test, a worker is presumed to be an employee, and the burden to demonstrate their independent contractor status is on the hiring company through satisfying all three of the following criteria:

•the worker is free from control and direction in the performance of services; and

•the worker is performing work outside the usual course of business of the hiring company; and

•the worker is customarily engaged in an independently established trade, occupation, or business.

How AB5 will be enforced is still to be determined. In January 2021, however, the California Supreme Court ruled that the ABC Test could apply retroactively to all cases not yet final as of the date the original decision was rendered, April 30, 2018. While AB5 was set to go into effect in January 2020, a federal judge in California issued a preliminary injunction barring the enforcement of AB5 on the trucking industry while the California Trucking Association (“CTA”) moves forward with its suit seeking to invalidate AB5. While this preliminary injunction provides temporary relief to the enforcement of AB5, it remains unclear how long such relief will last, and whether the CTA will ultimately be successful in invalidating the law. It is also possible AB5 will spur similar legislation in states other than California, which could adversely affect our results of operations and profitability. In September 2020, the U.S. Court of Appeals for the Ninth Circuit heard oral arguments in the case to decide whether the preliminary injunction should remain in effect. A decision on the matter is expected soon.

Further, class actions and other lawsuits have been filed against certain members of our industry seeking to reclassify independent contractors as employees for a variety of purposes, including workers' compensation and health care coverage. Taxing and other regulatory authorities and courts apply a variety of standards in their determination of independent contractor status. Our classification of independent contractors has been the subject of audits by such authorities from time to time. While we have been successful in continuing to classify our independent contractor drivers as independent contractors and not employees, we may be unsuccessful in defending that position in the future. If our independent contractor drivers are determined to be our employees, we would incur additional exposure under federal and state tax, workers' compensation, unemployment benefits, labor, employment, and tort laws, including for prior periods, as well as potential liability for employee benefits and tax withholdings. Our use of independent contractors is not significant to our total operations.

Environmental Regulations

We are subject to various environmental laws and regulations dealing with the hauling and handling of hazardous materials, fuel storage tanks, air emissions from our vehicles and facilities, engine idling, and discharge and retention of storm water. Our truck terminals often are located in industrial areas where groundwater or other forms of environmental contamination could occur. Our operations involve the risks of fuel spillage or seepage, environmental damage, and hazardous waste disposal, among others. Certain facilities have waste oil, new oil, diesel exhaust fluid ("DEF"), or fuel storage tanks and fueling islands. We do not know of any environmental regulations that would have a material effect on our capital expenditures, earnings or competitive position. Additionally, increasing efforts to control emissions of greenhouse gases may have an adverse effect on us. We maintain a young fleet age of tractors to ensure we are using the most up-to-date technology deployed by manufacturers to reduce emissions. Although we have instituted programs to monitor and control environmental risks and promote compliance with applicable environmental laws and regulations, if we are involved in a spill or other accident involving hazardous substances, if there are releases of hazardous substances we transport, if soil or groundwater contamination is found at our facilities or results from our operations, or if we are found to be in violation of applicable laws or regulations, we could be subject to cleanup costs and liabilities, including substantial fines or penalties or civil and criminal liability, any of which could have a materially adverse effect on our business and operating results.

In August 2011, the National Highway Traffic Safety Administration ("NHTSA") and the EPA adopted final rules that established the first-ever fuel economy and greenhouse gas standards for medium and heavy-duty vehicles, including the tractors we employ (the “Phase 1 Standards”). The Phase 1 Standards apply to tractor model years 2014 to 2018 and require the achievement of an approximate 20 percent reduction in fuel consumption by the 2018 model year, which equates to approximately four gallons of fuel for every 100 miles traveled. In addition, in February 2014, President Obama announced that

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his administration would begin developing the next phase of tighter fuel efficiency and greenhouse gas standards for medium-and heavy-duty tractors and trailers (the “Phase 2 Standards”). In October 2016, the EPA and NHTSA published the final rule mandating that the Phase 2 Standards will apply to trailers beginning with model year 2018 and tractors beginning with model year 2021. The Phase 2 Standards require nine percent and 25 percent reductions in emissions and fuel consumption for trailers and tractors, respectively, by 2027. We believe these requirements will result in additional increases in new tractor and trailer prices and additional parts and maintenance costs incurred to retrofit our tractors and trailers with technology to achieve compliance with such standards, which could adversely affect our operating results and profitability, particularly if such costs are not offset by potential fuel savings. We cannot predict, however, the extent to which our operations and productivity will be impacted. In October 2017, the EPA announced a proposal to repeal the Phase 2 Standards as they relate to gliders (which mix refurbished older components, including transmissions and pre-emission-rule engines, with a new frame, cab, steer axle, wheels, and other standard equipment). The outcome of such proposal is still undetermined as the EPA continues to consider Congressionally requested investigations into the legality of the proposal and the merits of an anti-glider study that was published shortly after the proposal became official. Additionally, implementation of the Phase 2 Standards as they relate to trailers has been delayed due to a provisional stay granted in October 2017 by the U.S. Court of Appeals for the District of Columbia, which is overseeing a case against the EPA by the Truck Trailer Manufacturers Association, Inc. regarding the Phase 2 Standards.

In January 2020, the EPA announced it is seeking input on reducing emissions of nitrogen oxides and other pollutants from heavy-duty trucks. The EPA is aiming to release proposed rulemaking for the new plan, commonly referred to as the “Cleaner Trucks Initiative,” later in 2020, and may take final action in 2021. The EPA is targeting 2027 for these new standards to take effect.

The California Air Resources Board ("CARB") also adopted emission control regulations that will be applicable to all heavy-duty tractors that pull 53-foot or longer box-type trailers within the State of California. The tractors and trailers subject to these CARB regulations must be either EPA SmartWay certified or equipped with low-rolling resistance tires and retrofitted with SmartWay-approved aerodynamic technologies. Enforcement of these CARB regulations for model year 2011 equipment began in January 2010 and have been phased in over several years for older equipment. In addition, in February 2017 CARB proposed California Phase 2 standards that would generally align with the federal Phase 2 Standards, with some minor additional requirements, and as proposed would stay in place even if the federal Phase 2 Standards were affected by action from President Trump’s administration. In February 2019, the California Phase 2 standards became final. Thus, even if the trailer provisions of the Phase 2 Standards are permanently removed, we would still need to ensure the majority of our fleet is compliant with the California Phase 2 standards, which may result in increased equipment costs and could adversely affect our operating results and profitability. CARB has also recently announced intentions to adopt regulations ensuring that 100% of tractors operating in California are operating with battery or fuel cell-electric engines in the future. Whether these regulations will ultimately be adopted remains unclear. Federal and state lawmakers also are considering a variety of other climate-change proposals. Compliance with such regulations could increase the cost of new tractors and trailers, impair equipment productivity, and increase operating expenses. These effects, combined with the uncertainty as to the operating results that will be produced by the newly designed diesel engines and the residual values of these vehicles, could increase our costs or otherwise adversely affect our business or operations. In June 2020, CARB also passed the Advanced Clean Trucks (“ACT”) regulation, requiring original equipment manufacturers to begin shifting towards greater production of zero-emission heavy duty tractors starting in 2024. Under ACT, by 2045, every new tractor sold in California will need to be zero-emission. While ACT does not apply to those simply operating tractors in California, it could affect the cost and/or supply of traditional diesel tractors and may lead to similar legislation in other states or at the federal level.

In order to reduce exhaust emissions, some states and municipalities have begun to restrict the locations and amount of time where diesel-powered tractors may idle. These restrictions could force us to purchase on-board power units that do not require the engine to idle or to alter our drivers' behavior, which could result in a decrease in productivity or increase in driver turnover.

Executive and Legislative Climate

It is still uncertain how President Biden’s leadership will impact our industry. That being said, President Biden has indicated his intent to make a green infrastructure package a top priority for his administration. Any measure in furtherance thereof could draw from the Moving Forward Act, a $1.5 trillion infrastructure bill that passed the U.S. House of Representatives in June 2020, but is still waiting to be heard by the U.S. Senate. The Moving Forward Act incorporated and expanded upon the Investing in a New Vision for the Environment and Surface Transportation in America (INVEST in America) Act, a nearly $500 billion bill intended to rebuild and reimagine U.S. transportation and infrastructure that was passed out of the House Committee on Transportation and Infrastructure in June 2020. It is unclear whether these legislative initiatives will be signed into law and what changes they may undergo prior thereto. However, adoption and implementation of the same could negatively impact our business by increasing our compliance obligations and related expenses. President Biden has also

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indicated an intention to make substantial changes to the current U.S. tax laws during his administration, including changes to the way capital gains are treated. Any changes to U.S. tax laws may have an adverse impact on our business and profitability.

The United States Mexico Canada Agreement (“USMCA”) was entered into effect in July 2020. The USMCA is designed to modernize food and agriculture trade, advance rules of origin for automobiles and trucks, and enhance intellectual property protections, among other matters, according to the Office of U.S. Trade Representative. It is difficult to predict at this stage what could be the impact of the USMCA on the economy, including the transportation industry. However, given the amount of North American trade that moves by truck, it could have a significant impact on supply and demand in the transportation industry, and could adversely impact the amount, movement, and patterns of freight we transport.

With the FAST Act originally set to expire in September 2020, Congress had noted its intent to consider a multiyear highway measure that would update the FAST Act. However, in September 2020 Congress approved a one year extension of the FAST Act, now set to expire in September 2021. If Congress fails to reauthorize the FAST Act or pass updated replacement legislation by the September 2021 deadline, and proceeds to manage transportation policy via short-term legislative directives, there will be uncertainty that could have a negative impact on our operations.

Given COVID-19’s considerable effect on our industry in 2020, the FMCSA issued various temporary responsive measures throughout the year in order to combat the same, including, without limitation, those related to hours of service, commercial driver’s licenses and medical certifications. Although, to date, these measures have largely been enacted in order to assist industry participants in operating under adverse circumstances, any further responsive measures remain unclear and could have a negative impact on our operations.

For further discussion regarding laws and regulations, refer to the "Risk Factors" section under Item 1A of Part I of this Annual Report.

Available Information

Our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act of 1934, as amended, are available to the public, free of charge, through our Internet website, at http://www.heartlandexpress.com, as soon as reasonably practicable after we electronically file such material with, or furnish it to, the Securities and Exchange Commission ("SEC"). Information on our website is not incorporated by reference into this Annual Report. You may also access and read our filings with the SEC without charge through the SEC's website at www.sec.gov.

ITEM 1A.    RISK FACTORS

Our future results may be affected by a number of factors over which we have little or no control. The following discussion of risk factors contains forward-looking statements as discussed in "Cautionary Note Regarding Forward-Looking Statements" above. The following issues, uncertainties, and risks, among others, should be considered in evaluating our business and growth outlook. If any of the following risk factors, as well as other risks and uncertainties that are not currently known to us or that we currently believe are not material, actually occur, our business, financial condition, and results of operations could be materially adversely affected and you may lose all or a significant part of your investment.

STRATEGIC RISKS

Our business is subject to economic, credit, business, and regulatory factors affecting the trucking industry that are largely out of our control, any of which could have a materially adverse effect on our operating results.

The truckload industry is highly cyclical, and our business is dependent on a number of factors that may have a materially adverse effect on our results of operations, many of which are beyond our control. We believe that some of the most significant of these factors are economic changes that affect supply and demand in transportation markets, such as:

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• recessionary economic cycles, which are characterized by weak demand and downward pressure on freight rates;

• downturns in customers’ business cycles, including as a result of declines in consumer spending;

• changes in customers’ inventory levels and practices, including shrinking product/package size, and in the availability of funding for their working capital;

• excess tractor and trailer capacity in the trucking industry in comparison with shipping demand;

• changes in the way our customers choose to source or utilize our services;

• the rate of unemployment and availability of and compensation for alternative jobs for truck drivers, which impact the pool of available drivers and our driver compensation costs;

• activity in key economic indicators such as manufacturing of automobiles and durable goods, and housing construction;

• supply chain disruptions due to factors such as weather and railroad or ports congestion; and

• rising costs of healthcare.

Economic conditions that decrease shipping demand and increase the supply of available tractors and trailers can exert downward pressure on rates and equipment utilization, thereby decreasing asset productivity. The risks associated with these factors are heightened when the U.S. economy is weakened. Some of the principal risks during such times are as follows:

• we may experience a reduction in overall freight levels, which may impair our asset utilization;

• certain of our customers may face credit issues and could experience cash flow problems that may lead to payment delays, increased credit risk, bankruptcies and other financial hardships that could result in even lower freight demand and may require us to increase our allowance for doubtful accounts;

• freight patterns may change as supply chains are redesigned, resulting in an imbalance between our capacity and our customers’ freight demand;

• customers may solicit bids for freight from multiple trucking companies or select competitors that offer lower rates from among existing choices in an attempt to lower their costs and we might be forced to lower our rates or lose freight;

• we may be forced to accept freight from freight brokers, where freight rates are typically lower, or may be forced to incur more non-revenue miles to obtain loads; and

• the resale value of our equipment may decline, which could negatively impact our earnings and cash flows.

We also are subject to potential increases in various costs and other events that are outside of our control that could materially reduce our profitability if we are unable to increase our rates sufficiently. Further, we may be unable to appropriately adjust our costs and staffing levels to changing market demands.

In addition, we cannot predict future economic conditions, fuel price fluctuations, revenue equipment resale values, or how consumer confidence, macroeconomic conditions, or production capabilities, could be affected by actual or threatened outbreaks of disease or other public health risks, armed conflicts or terrorist attacks, government efforts to combat terrorism, military action against a foreign state or group located in a foreign state, or heightened security requirements. Enhanced security measures in connection with such events could impair our operating efficiency and productivity and result in higher operating costs.

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Our growth may not continue at historical rates, if at all, and any decrease in revenues or profits may impair our ability to implement our business strategy, which could have a materially adverse effect on our results of operations.

Historically, we have experienced significant growth in revenue and profits, although there have been times, particularly after acquisitions, when our revenue and/or profitability decreased. There can be no assurance that our business will grow in a similar fashion in the future, or at all, or that we can effectively adapt our management, administrative, and operational systems to respond to any future growth. Further, there can be no assurance that our operating margins will not be adversely affected by future changes in and expansion of our business or by changes in economic conditions.

We have established terminals throughout the contiguous U.S. in order to serve markets in various regions. These regional operations require the commitment of additional personnel and revenue equipment, as well as management resources, for future development and establishing terminals and operations in new markets could require more time, resources or a more substantial financial commitment than anticipated. Should the growth in our regional operations stagnate or decline, the results of our operations could be adversely affected. If we seek to further expand, it may become more difficult to identify large cities that can support a terminal and we may expand into smaller cities where there is insufficient economic activity, fewer opportunities for growth and fewer drivers and non-driver personnel to support the terminal. We may encounter operating conditions in these new markets, as well as our current markets, that differ substantially from our current operations and customer relationships and appropriate freight rates in new markets could be challenging to attain. We may not be able to duplicate or sustain our operating strategy and establishing service centers or terminals and operations in new markets could require more time or resources, or a more substantial financial commitment than anticipated. These challenges may negatively impact our growth, which could have a materially adverse effect on our ability to execute our business strategy and our results of operations.

We operate in a highly competitive and fragmented industry, and numerous competitive factors could impair our ability to improve our profitability, limit growth opportunities, and could have a materially adverse effect on our results of operations.

Numerous competitive factors present in our industry could impair our ability to maintain or improve our current profitability, limit our prospects for growth, and could have a materially adverse effect on our results of operations. These factors include the following:

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• we compete with many other truckload carriers of varying sizes and, to a lesser extent, with less-than-truckload carriers, railroads, intermodal companies, and other transportation and logistics companies, many of which have access to more equipment and greater capital resources than we do;

• many of our competitors periodically reduce their freight rates to gain business, especially during times of reduced growth rates in the economy, which may limit our ability to maintain or increase freight rates or to maintain or expand our business or may require us to reduce our freight rates in order to maintain business and keep our equipment productive;

• we may increase the size of our fleet during periods of high freight demand during which our competitors also increase their capacity, and we may experience losses in greater amounts than such competitors during subsequent cycles of softened freight demand if we are required to dispose of assets at a loss to match reduced customer demand;

• a significant portion of our business is in the retail industry, which continues to undergo a shift away from the traditional brick and mortar model towards e-commerce, and this shift could impact the manner in which our customers source or utilize our services;

• many customers reduce the number of carriers they use by selecting so-called "core carriers" as approved service providers or by engaging dedicated providers, and we may not be selected;

• the trend toward consolidation in the trucking industry may create large carriers with greater financial resources and other competitive advantages relating to their size, and we may have difficulty competing with these larger carriers;

• the market for qualified drivers is increasingly competitive, and our inability to attract and retain drivers could reduce our equipment utilization or cause us to increase compensation to our drivers, both of which would adversely affect our profitability;

• competition from freight logistics and freight brokerage companies may adversely affect our customer relationships and freight rates; and

• the Heartland and Millis Transfer brand names are valuable assets that are subject to the risk of adverse publicity (whether or not justified),which could result in the loss of value attributable to our brand and reduced demand for our services.

We may not make acquisitions in the future, or if we do, we may not be successful in integrating the acquired company, either of which could have a materially adverse effect on our business.

Historically, acquisitions have been a part of our growth. There is no assurance that we will be successful in identifying, negotiating, or consummating any future acquisitions. If we fail to make any future acquisitions, our historical growth rate could be materially and adversely affected. If we succeed in consummating future acquisitions, our business, financial condition and results of operations, may be materially adversely affected because:

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• some of the acquired businesses may not achieve anticipated revenue, earnings, or cash flows;

• we may assume liabilities that were not disclosed to us or otherwise exceed our estimates;

• we may be unable to integrate acquired businesses successfully, or at all, and realize anticipated economic, operational and other benefits in a timely manner, which could result in substantial costs and delays or other operational, technical, or financial problems;

• acquisitions could disrupt our ongoing business, distract our management, and divert our resources;

• we may experience difficulties operating in markets in which we have had no or only limited direct experience;

• we may incur transaction costs and acquisition-related integration costs;

• we could lose customers, employees, and drivers of any acquired company;

• we may experience potential future impairment charges, write-offs, write-downs, or restructuring charges; and

• we may issue dilutive equity securities, incur indebtedness, and/or incur large one-time expenses.

OPERATIONAL RISKS

Increases in driver compensation or difficulties in attracting and retaining qualified drivers, including independent contractors, may have a materially adverse effect on our profitability and the ability to maintain or grow our fleet.

Like many truckload carriers, we experience substantial difficulty in attracting and retaining sufficient numbers of qualified drivers which includes to a lesser extent, our engagement of independent contractors. Independent contractors currently represent a small portion of our fleet. The truckload industry is subject to a shortage of qualified drivers. Such shortage is exacerbated during periods of economic expansion, in which alternative employment opportunities, such as those in the construction and manufacturing industries, are more plentiful and freight demand increases. Furthermore, capacity at driving schools may be limited by COVID-19 related social distancing requirements. Regulatory requirements, including those related to safety ratings, ELDs and HOS changes, drug and alcohol testing national database, an improved economy, and aging of the driver workforce, could further reduce the pool of eligible drivers or force us to increase driver compensation to attract and retain drivers. We have seen evidence that CSA, the drug and alcohol clearing house, and stricter HOS regulations adopted by the DOT in the past have tightened, and, to the extent new regulations are enacted, may continue to tighten, the market for eligible drivers. The lack of adequate tractor parking along some U.S. highways and congestion caused by inadequate highway funding may make it more difficult for drivers to comply with HOS regulations and cause added stress for drivers, further reducing the pool of eligible drivers. Further, the compensation we offer our drivers is subject to market conditions, and we may find it necessary to increase driver compensation in future periods.

In addition, we and many other truckload carriers suffer from a high turnover rate of drivers that is inherent within our industry. This high turnover rate requires us to continually recruit a substantial number of drivers in order to operate existing revenue equipment. We also employ driver hiring standards which we believe are more rigorous than the hiring standards employed in general in our industry and could further reduce the pool of available drivers from which we would hire. If we are unable to continue to attract and retain a sufficient number of drivers, we could be forced to, among other things, adjust our compensation packages, increase the number of our tractors without drivers, or operate with fewer tractors and face difficulty meeting shipper demands, any of which could adversely affect our profitability and results of operations.

We are highly dependent on a few major customers, the loss of one or more of which could have a materially adverse effect on our business.

We generate a significant portion of our operating revenue from a small number of our major customers. Generally, we do not have long-term contracts with our major customers. A substantial portion of our freight is from customers in the retail industry. As such, our volumes are largely dependent on consumer spending and retail sales, and our results may be more susceptible to trends in unemployment and retail sales than carriers that do not have this concentration. In addition, our major customers

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engage in bid processes and other activities periodically (including currently) in an attempt to lower their costs of transportation. We may not choose to participate in these bids or, if we participate, may not be awarded the freight, either of which could result in a reduction of our freight volumes with these customers. In this event, we could be required to replace the volumes elsewhere at uncertain rates and volumes, suffer reduced equipment utilization, or reduce the size of our fleet. In addition, the size and market concentration of some of our customers may allow them to exert increased pressure on the prices, margins and non-monetary terms of our contracts. Failure to retain our existing customers, or enter into relationships with new customers, each on acceptable terms, could materially impact our business, financial condition, results of operations, and ability to meet our current and long-term financial forecasts.

Our customers’ financial difficulties can negatively impact our results of operations and financial condition, especially if they were to delay or default on payments to us. If any of our major customers experience financial hardship, the demand for our services could decrease which could negatively affect our operating results. Further, if one or more of our major customers were to seek protection under bankruptcy laws, we might not receive payment for a significant amount of services rendered and, under certain circumstances, might have to return certain payments made by such customers, which may cause an adverse impact on our profitability and operations. Generally, we do not have contractual relationships that guarantee any minimum volumes with our customers, and we cannot assure you that our customer relationships will continue as presently in effect. Certain services we provide customers are subject to longer term written contracts. However, certain of these contracts contain cancellation clauses, including our “evergreen” contracts, which automatically renew for one year terms but that can be terminated more easily. There is no assurance any of our customers, including those with longer term contracts, will continue to utilize our services, renew our existing contracts, or continue at the same volume levels. Despite the existence of contractual arrangements with our customers, certain of our customers may nonetheless engage in competitive bidding processes that could negatively impact our contractual relationship. In addition, certain of our major customers may increasingly use their own truckload and delivery fleets, which would reduce our freight volumes. A reduction in or termination of our services by one or more of our major customers, including our customers with longer term contracts, could have a material adverse effect on our business, financial condition and results of operations.

If fuel prices increase significantly, our results of operations could be adversely affected.

Our operations are dependent upon fuel. Prices and availability of petroleum products are subject to political, economic, weather-related, geographic and market factors that are outside our control and each of which may lead to fluctuations in the cost of fuel. Fuel prices also are affected by the rising demand for fuel in developing countries, and could be materially adversely affected by the use of crude oil and oil reserves for purposes other than fuel production and by diminished drilling activity. Such events may lead not only to increases in fuel prices, but also to fuel shortages and disruptions in the fuel supply chain. Fuel also is subject to regional pricing differences and is often more expensive in certain areas where we operate.

Because our operations are dependent upon fuel, significant increases in fuel costs, fuel shortages, rationings, or supply disruptions could materially and adversely affect our results of operations and financial condition, particularly if we are unable to pass increased costs on to customers through rate increases or fuel surcharges. Even if we are able to pass some increased costs on to customers, fuel surcharge programs generally do not protect us against all of the increases in fuel prices. Moreover, in times of rising fuel prices, the lag between purchasing the fuel, and the billing for the surcharge (which typically is based on the prior week's average price), can negatively impact our earnings and cash flows and lead to fluctuations in our levels of reimbursement, which have occurred in the past. In addition, the terms of each customer's fuel surcharge agreement vary, and certain customers have sought to modify the terms of their fuel surcharge agreements to minimize recoverability for fuel price increases. During periods of low freight volumes, customers may use their negotiating leverage to impose fuel surcharge policies that provide a lower reimbursement of our fuel costs. There is no assurance that our fuel surcharge programs can be maintained indefinitely or will be sufficiently effective. Our results of operations would be negatively affected to the extent we cannot recover higher fuel costs or fail to improve our fuel price protection through our fuel surcharge programs.

We depend on the proper functioning and availability of our management information and communication systems and other technology assets (and the data contained therein) and a system failure or unavailability, including those caused by cybersecurity breaches, or an inability to effectively upgrade such systems and assets could cause a significant disruption to our business and have a materially adverse effect on our results of operations.

Our business depends on the efficient and uninterrupted operation of our information and communications systems and other technology assets, including the data contained therein and our communication system with our fleet of revenue equipment. We currently use centralized computer networks and regular communication to achieve system-wide load coordination for both Heartland and Millis. Our operating systems are critical to understanding customer demands, accepting and planning loads, dispatching equipment and drivers, and billing and collecting for our services. Our financial reporting system is critical to producing accurate and timely financial statements and analyzing business information to help us manage effectively. Furthermore, recently enacted data privacy laws, such as the California Consumer Privacy Act that became effective on January

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1, 2020 and provides new data privacy rights for consumers and operational requirements for companies, may result in increased liability and amplified compliance and monitoring costs, any of which could have a material adverse effect on our financial performance and business operations.

Our operations and those of our technology and communications service providers are vulnerable to interruption by fire, earthquake, power loss, telecommunications failure, terrorist attacks, cyberattacks, internet failures, computer viruses, deliberate attacks of unauthorized access to systems, denial-of-service attacks on websites, and other events beyond our control. More sophisticated and frequent cyberattacks in recent years have also increased security risks associated with information technology systems. We also maintain information security policies to protect our systems, networks, and other information technology assets (and the data contained therein) from cybersecurity breaches and threats, such as hackers, malware, and viruses; however, such policies cannot ensure the protection of our systems, networks, and other information technology assets (and the data contained therein). If any of our critical information systems fail or become otherwise unavailable, whether as a result of a system upgrade project or otherwise, we would have to perform the functions manually, which could temporarily impact our ability to manage our fleet efficiently, to respond to customers’ requests effectively, to maintain billing and other records reliably, and to bill for services and prepare financial statements accurately or in a timely manner. We do not carry a cybersecurity insurance policy. Any significant system failure, upgrade complication, security breach (including cyberattacks), or other system disruption could interrupt or delay our operations, damage our reputation, cause us to lose customers, or impact our ability to manage our operations and report our financial performance, any of which could have a materially adverse effect on our business.

If we are unable to retain our key employees or find, develop and retain a core group of managers, our business, financial condition, and results of operations could be materially adversely affected.

We are highly dependent upon the services of several executive officers and key management employees. The loss of any of their services could have a negative impact on our operations and profitability. We currently do not have employment agreements with any of our key employees or executive officers. Turnover, planned or otherwise, in these or other key leadership positions may materially adversely affect our ability to manage our business efficiently and effectively, and such turnover can be disruptive and distracting to management, may lead to additional departures of existing personnel, and could have a material adverse effect on our operations and future profitability. We must continue to develop and retain a core group of managers if we are to realize our goal of expanding our operations and continuing our growth. Failing to develop and retain a core group of managers could have a materially adverse effect on our business.

Seasonality and the impact of weather and other catastrophic events affect our operations and profitability.

Weather and other seasonal events could adversely affect our operating results. Our tractor productivity decreases during the winter season because inclement weather impedes operations, and some shippers reduce their shipments after the winter holiday season. Revenue can also be affected by bad weather and holidays, since revenue is directly related to available working days of shippers. At the same time, operating expenses increase and fuel efficiency declines because of engine idling, while harsh weather creates higher accident frequency, increased claims, and more equipment repairs. In addition, many of our customers, particularly those in the retail industry where we have a large presence, demand additional capacity during the fourth quarter, which limits our ability to take advantage of more attractive market rates that generally exist during such periods. Further, despite our efforts to meet such demands, we may fail to do so, which may result in lost future business opportunities with such customers, which could have a materially adverse effect on our operations. Recently, the duration of this increased period of demand in the fourth quarter has shortened, with certain customers requiring the same volume of shipments over a more condensed timeframe, resulting in increased stress and demand on our network, people, and systems. If this trend continues, it could make satisfying our customers and maintaining the quality of our service during the fourth quarter increasingly difficult. We may also suffer from weather-related or other unforeseen events such as tornadoes, hurricanes, blizzards, ice storms, floods, fires, earthquakes, and explosions. These events may disrupt fuel supplies, increase fuel costs, disrupt freight shipments or routes, affect regional economies, destroy our assets, or adversely affect the business or financial condition of our customers, any of which could have a materially adverse effect on our results of operations or make our results of operations more volatile.

COMPLIANCE RISKS

We self-insure for a significant portion of our claims exposure, which could significantly increase the volatility of, and decrease the amount of, our earnings.

Our future insurance and claims expense might exceed historical levels, which could reduce our earnings. Our business results in a substantial number of claims and litigation related to workers’ compensation, auto liability, general liability, cargo and property damage claims, personal injuries, and employment issues as well as employees’ health insurance. We self-insure for a portion of our claims, which could increase the volatility of, and decrease the amount of, our earnings, and could have a

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materially adverse effect on our results of operations. See Note 7 of the consolidated financial statements for more information regarding our self-insured retention amounts. We are also responsible for our legal expenses relating to such claims. We reserve currently for anticipated losses and related expenses. We periodically evaluate and adjust our claims reserves to reflect trends in our own experience as well as industry trends. However, ultimate results may differ from our estimates due to a number of uncertainties, including evaluation of severity, legal costs, and claims that have been incurred but not reported, which could result in losses over our reserved amounts. Due to our high retained amounts, we have significant exposure to fluctuations in the number and severity of claims. If we are required to reserve or pay additional amounts because our estimates are revised or the claims ultimately prove to be more severe than originally assessed or if our self-insured retention levels change, our financial condition and results of operations may be materially adversely affected.

We maintain insurance for most risks above the amounts for which we self-insure with licensed insurance carriers. We do not currently maintain directors’ and officers’ insurance coverage, although we are obligated to indemnify them against certain liabilities they may incur while serving in such capacities. If any claim is not covered by an insurance policy, exceeds our coverage, or falls outside the aggregate coverage limit, we would bear the excess or uncovered amount, in addition to our other self-insured amounts. Insurance carriers that provide excess insurance coverage to us currently and for past claim years have encountered financial issues. Recently there have been several insurance carriers that have exited the excess reinsurance market. Insurance carriers have recently raised premiums and collateral requirements for many businesses, including trucking companies. As a result, our insurance and claims expense could likely increase if we have a similar experience at renewal, or we could find it necessary to raise our self-insured retention or decrease our aggregate coverage limits when our policies are renewed or replaced. At our last policy renewal in April 2020, we reduced our excess insurance coverage. Should these expenses increase, we become unable to find excess coverage in amounts we deem sufficient, we experience a claim in excess of our coverage limits, we experience a claim for which we do not have coverage, or we have to increase our reserves or collateral, there could be a materially adverse effect on our results of operations and financial condition.

We operate in a highly regulated industry, and changes in existing regulations or violations of existing or future regulations could have a materially adverse effect on our operations and profitability.

We, our drivers, and our equipment are regulated by the DOT, the EPA, the DHS, and other agencies in the states in which we operate. For further discussion of the laws and regulations applicable to us, our drivers, and our equipment, please see “Regulation” under “Item 1: Business.” Future laws and regulations may be more stringent and require changes in our operating practices, influence the demand for transportation services, or require us to incur significant additional costs. Higher costs incurred by us or by our suppliers who pass the costs on to us through higher prices could adversely affect our results of operations.

If our independent contractors are deemed by regulators or judicial process to be employees, our business, financial condition and results of operations could be adversely affected.

While the size of our independent contractor fleet has been significantly reduced, independent contractors have historically comprised a portion of our fleet. Tax and other regulatory authorities, as well as independent contractors themselves, have increasingly asserted that independent contractors in the trucking industry are employees rather than independent contractors, for a variety of purposes, including income tax withholding, workers' compensation, wage and hour compensation, unemployment, and other issues. Federal legislators have introduced legislation in the past to make it easier for tax and other authorities to reclassify independent contractor drivers as employees, including legislation to increase the recordkeeping requirements for those that engage independent contractor drivers and to heighten the penalties of companies who misclassify their employees and are found to have violated employees' overtime and/or wage requirements. Additionally, federal legislators have sought to abolish the current safe harbor allowing taxpayers meeting certain criteria to treat individuals as independent contractors if they are following a long-standing, recognized practice, extend the Fair Labor Standards Act to independent contractors, and impose notice requirements based upon employment or independent contractor status and fines for failure to comply. Some states have put initiatives in place to increase their revenues from items such as unemployment, workers’ compensation, and income taxes, and a reclassification of independent contractors as employees would help states with these initiatives. Additionally, courts in certain states have issued recent decisions that could result in a greater likelihood that independent contractors would be judicially classified as employees in such states. Further, class actions and other lawsuits have been filed against certain members of our industry seeking to reclassify independent contractors as employees for a variety of purposes, including workers’ compensation and health care coverage. Taxing and other regulatory authorities and courts apply a variety of standards in their determination of independent contractor status. Our classification of independent contractors has been the subject of audits by such authorities from time to time. While we have been successful in continuing to classify our independent contractor drivers as independent contractors and not employees, we may be unsuccessful in defending that position in the future. If our independent contractors are determined to be our employees, we would incur additional exposure under federal and state tax, workers’ compensation, unemployment benefits, labor, employment, and tort laws, including for prior periods, as well as potential liability for employee benefits and tax withholdings. For further discussion of the laws impacting the classification of independent contractors, please see "Regulation" under “Item 1. Business.”

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Developments in labor and employment law and any unionizing efforts by employees could have a materially adverse effect on our results of operations.

We face the risk that Congress, federal agencies, or one or more states could approve legislation or regulations significantly affecting our businesses and our relationship with our employees, which would have substantially liberalized the procedures for union organizations. None of our domestic employees are currently covered by a collective bargaining agreement, but any attempt by our employees to organize a labor union could result in increased legal and other associated costs. Additionally, given the National Labor Relations Board’s “speedy election” rule, our ability to timely and effectively address any unionizing efforts would be difficult. If we entered into a collective bargaining agreement with our domestic employees, the terms could materially adversely affect our costs, efficiency, and ability to generate acceptable returns on the affected operations. Failure to comply with existing or future labor and employment laws could have a materially adverse effect on our business and operating results. For further discussion of the labor and employment laws, please see "Regulation" under “Item 1. Business.”

The CSA program adopted by the FMCSA could adversely affect our profitability and operations, our ability to maintain or grow our fleet, and our customer relationships.

Under CSA, fleets are evaluated and ranked against their peers based on certain safety-related standards. As a result, our fleet could be ranked poorly as compared to peer carriers, which could have an adverse effect on our business, financial condition, and results of operations. The occurrence of future deficiencies could affect driver recruitment by causing high-quality drivers to seek employment with other carriers, limit the pool of available drivers, or could cause our customers to direct their business away from us and to carriers with higher fleet safety rankings, either of which would adversely affect our results of operations. Further, we may incur greater than expected expenses in our attempts to improve unfavorable scores.

We have in the past exceeded the FMCSA's established intervention thresholds in certain of the seven CSA safety-related categories. Based on these unfavorable ratings, we may be prioritized for an intervention action or roadside inspection, either of which could adversely affect our results of operations. In addition, customers may be less likely to assign loads to us. We have put procedures in place in an attempt to address areas where we have exceeded the thresholds. However, we cannot assure you these measures will be effective.

Receipt of an unfavorable DOT safety rating could have a materially adverse effect on our operations and profitability.

We currently have satisfactory DOT ratings, which is the highest available rating under the current safety rating scale. If we were to receive a conditional or unsatisfactory DOT safety rating, it could materially adversely affect our business, financial condition, and results of operations as customer contracts may require a satisfactory DOT safety rating, and a conditional or unsatisfactory rating could materially adversely affect or restrict our operations. Furthermore, any changes to the DOT safety rating could make it more difficult for us to receive a satisfactory rating.

Compliance with various environmental laws and regulations may increase our costs of operations and non-compliance with such laws and regulations could result in substantial fines or penalties.

In addition to direct regulation under the DOT and related agencies, we are subject to various environmental laws and regulations dealing with the hauling and handling of hazardous materials, waste oil, fuel storage tanks, air emissions from our vehicles and facilities, engine idling, and discharge and retention of storm water. Our truck terminals often are located in industrial areas where groundwater or other forms of environmental contamination may have occurred or could occur. Our operations involve the risks of fuel spillage or seepage, environmental damage, and hazardous waste disposal, among others. Certain of our facilities have waste oil or fuel storage tanks and fueling islands. A small percentage of our freight consists of low-grade hazardous substances, which subjects us to a wide array of regulations. Although we have instituted programs to monitor and control environmental risks and promote compliance with applicable environmental laws and regulations, if we are involved in a spill or other accident involving hazardous substances, if there are releases of hazardous substances we transport, if soil or groundwater contamination is found at our facilities or results from our operations, or if we are found to be in violation of applicable laws or regulations, we could be subject to cleanup costs and liabilities, including substantial fines or penalties or civil and criminal liability, any of which could have a materially adverse effect on our business and operating results. For further discussion of environmental laws and regulations, please see "Regulation" under “Item 1. Business.”

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Changes to trade regulation, quotas, duties, or tariffs, caused by the changing U.S. and geopolitical environments or otherwise, may increase our costs and materially adversely affect our business.

The approach of President Biden’s administration to tariffs and other trade regulations is still uncertain. The imposition of additional tariffs or quotas or changes to certain trade agreements, including tariffs applied to goods traded between the United States and China, could, among other things, increase the costs of the materials and decrease the availability of certain materials used by our suppliers to produce new revenue equipment or increase the price of fuel. Such cost increases for our revenue equipment suppliers would likely be passed on to us, and to the extent fuel prices increase, we may not be able to fully recover such increases through rate increases or our fuel surcharge program, either of which could have a material adverse effect on our business.

Litigation may adversely affect our business, financial condition, and results of operations.

Our business is subject to the risk of litigation by employees, independent contractors, customers, vendors, government agencies, stockholders, and other parties through private actions, class actions, administrative proceedings, regulatory actions, and other processes. Recently, trucking companies, including us, have been subject to lawsuits, including class action lawsuits, alleging violations of various federal and state wage and hour laws regarding, among other things, employee meal breaks, rest periods, overtime eligibility, and failure to pay for all hours worked. A number of these lawsuits have resulted in the payment of substantial settlements or damages by the defendants.

The outcome of litigation, particularly class action lawsuits and regulatory actions, is difficult to assess or quantify, and the magnitude of the potential loss relating to such lawsuits may remain unknown for substantial periods of time. The cost to defend litigation may also be significant. Not all claims are covered by our insurance, and there can be no assurance that our coverage limits will be adequate to cover all amounts in dispute. To the extent we experience claims that are uninsured, exceed our coverage limits, involve significant aggregate use of our self-insured retention amounts, or cause increases in future premiums, the resulting expenses could have a significant materially adverse effect on our business, results of operations, financial condition, or cash flows.

In addition, we may be subject, and have been subject in the past, to litigation resulting from trucking accidents. The number and severity of litigation claims may be worsened by distracted driving by both truck drivers and other motorists. These lawsuits have resulted, and may result in the future, in the payment of substantial settlements or damages and rising risk of higher insurance costs.

FINANCIAL RISKS

The incurrence of indebtedness under our Credit Agreement or lack of access to other financing sources could have adverse consequences on our future operations.

Historically, we have generally funded our growth, working capital, capital expenditures, dividends, stock repurchases, acquisitions, and other general corporate expenses through cash flows generated from operations. However, in 2013 we entered into an unsecured credit agreement with Wells Fargo Bank, National Association (as amended, the “Credit Agreement”), which was amended in August 2018 and currently provides for an unsecured revolving line of credit with the flexibility to borrow up to $100.0 million and provides for an additional $100.0 million of borrowing capacity based on defined provisions in the agreement. We had no outstanding borrowings as of December 31, 2020. If we need to incur indebtedness in the future, any borrowings we make under the Credit Agreement, or from other sources could have adverse consequences on our future operations by reducing the availability of our future cash flows, limiting our flexibility regarding future expenditures, and making us more vulnerable to changes in the industry and economy. Our Credit Agreement expires in August 2021. To the extent we are unable to renew our credit facility on similar terms to the existing credit facility, could have an adverse effect on our operations, financial condition, or cash flows. Further, if borrowings under the Credit Agreement become unavailable, including because of recent significant fines or future regulatory actions and fines, judgements, or settlements, imposed upon Wells Fargo, and we need to obtain financing from other sources, we may be unable to obtain terms as favorable as the current terms of the Credit Agreement, or to secure financing at all, which could have adverse consequences on our future operations.

Our profitability may be materially adversely impacted if our capital investments do not match customer demand or if there is a decline in the availability of funding sources for these investments.

Our operations require significant capital investments. The amount and timing of such investments depend on various factors, including anticipated freight demand and the price and availability of assets. If anticipated demand differs materially from actual usage, we may have too many or too few assets. Moreover, resource requirements vary based on customer demand, which may be subject to seasonal or general economic conditions. During periods of decreased customer demand, our asset utilization may suffer, and we may be forced to sell equipment on the open market or turn in equipment under certain

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equipment leases, if any, in order to right size our fleet. This could cause us to incur losses on such sales or require payments in connection with the return of such equipment, particularly during times of a softer used equipment market, either of which could have a materially adverse effect on our profitability. Our ability to select profitable freight and adapt to changes in customer transportation requirements is important to efficiently deploy resources and make capital investments in tractors and trailers.

Our historical policy of operating newer equipment requires us to expend significant amounts annually to maintain a newer average age for our fleet of revenue equipment. We expect to pay for projected capital expenditures with cash flows from operations, proceeds from sales of equipment being replaced, and with proceeds of borrowings if necessary. If we are unable to generate sufficient cash from operations, or proceeds from sales of equipment being replaced, or utilize borrowing capacity on our Credit Agreement, we would need to seek alternative sources of capital, including additional financing, to meet our capital requirements. In the event that we are unable to generate sufficient cash from operations or obtain additional financing on favorable terms in the future, we may have to limit our fleet size, enter into less favorable financing arrangements, or operate our revenue equipment for longer periods, any of which could have a materially adverse effect on our profitability.

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. Moreover, an inability to obtain an adequate supply of new tractors or trailers could have a materially adverse effect on our business, financial condition, and results of operation.

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.

We could determine that our goodwill and other intangible assets are impaired, thus recognizing a related loss.

As of December 31, 2020, we had goodwill of $168.3 million and other intangible assets of $24.7 million. We evaluate our goodwill and other intangible assets for impairment. We could recognize impairments in the future, and we may never realize the full value of our intangible assets. If these events occur, our profitability and financial condition will suffer.

Concentrated ownership of our stock can influence stockholder decisions, may discourage a change in control, and may have an adverse effect on share price of our stock.

Investors who purchase our common stock may be subject to certain risks due to the concentrated ownership of our common stock. The Gerdin family, our directors, and our executive officers, as a group, own or control approximately 41% of our common stock, and their interests may conflict with the interests of our other stockholders. This ownership concentration may have the effect of discouraging, delaying, or preventing a change in control, and may also have an adverse effect on the market price of our shares. As a result of their ownership, the Gerdin family, the executive officers and directors, as a group, may have the ability to influence the outcome of any matter submitted to our stockholders for approval, including the election of directors.

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This concentration of ownership could limit the price that some investors might be willing to pay for our common stock, and could allow the Gerdin family to prevent or could discourage or delay a change of control, which other stockholders may favor. Further, our bylaws have been amended to “opt out” of the Nevada control share statute. Accordingly, an acquisition of more than a majority of our common stock by the Gerdin family will not result in certain shares in excess of a majority losing their voting rights and may enhance the Gerdin family's ability to exercise control over decisions affecting us. The interests of the Gerdin family may conflict with the interests of other holders of our common stock, and they may take actions affecting us with which other stockholders disagree.

The market price of our common stock may be volatile.

The price of our common stock may fluctuate widely, depending upon a number of factors, many of which are beyond our control. In addition, stock markets generally experience significant price and volume volatility from time to time which may adversely affect the market price of our common stock for reasons unrelated to our performance.

COVID-19 RISKS

We could be negatively impacted by the COVID-19 pandemic or other similar outbreaks.

We have experienced an increase in absences or terminations among our driver and non-driver personnel due to the outbreak of COVID-19, which have disrupted our operations. Further, our operations, particularly in areas of increased COVID-19 infections, could be disrupted. Negative financial results, operational disruptions, driver and non-driver absences, uncertainties in the market, and a tightening of credit markets, caused by COVID-19, other similar outbreaks, or a recession, could have a material adverse effect on our liquidity and reduce credit options available to us.

The outbreak of COVID-19 has significantly increased economic and demand uncertainty. It is likely that the current outbreak has caused a slowdown in the global economy and the duration of the contraction remains uncertain. Risks related to a slowdown or recession are described in our risk factor titled “Our business is subject to economic, credit, business, and regulatory factors affecting the trucking industry that are largely out of our control, any of which could have a materially adverse effect on our operating results.”

Developments related to COVID-19 have been unpredictable and the extent to which further developments could impact our operations, financial condition, liquidity, results of operations, and cash flows is highly uncertain. Such developments may include the duration of the virus, the distribution and availability of vaccines, the severity of the disease and the actions that may be taken by various governmental authorities and other third parties in response to the outbreak.

ITEM 1B.    UNRESOLVED STAFF COMMENTS

None.

ITEM 2.    PROPERTIES

Our headquarters is located in North Liberty, Iowa which is located on Interstate 380 near the intersection of Interstates 380 and 80. The headquarters is located on 40 acres of land along the Cedar Rapids/Iowa City business corridor and includes a 65,000 square foot office building and a 32,600 square foot shop and maintenance building.

The following table provides information regarding our terminal facilities with either shop and maintenance or fueling services:

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Company Location	Office	Shop	Fuel	Owned or Leased
Albany, Georgia	No	Yes	No	Owned
Atlanta, Georgia	Yes	Yes	Yes	Owned
Black River Falls, Wisconsin	Yes	Yes	Yes	Owned
Boise, Idaho	Yes	Yes	No	Owned
Burleson, Texas	No	Yes	No	Owned
Carlisle, Pennsylvania	Yes	Yes	Yes	Owned
Cartersville, Georgia	Yes	Yes	Yes	Owned
Chester, Virginia	Yes	Yes	Yes	Owned
Columbus, Ohio	Yes	Yes	Yes	Owned
Eden, North Carolina	Yes	Yes	No	Owned
Frederick, Colorado	Yes	Yes	Yes	Owned
Jacksonville, Florida	Yes	Yes	Yes	Owned
Kingsport, Tennessee	Yes	Yes	Yes	Owned
Lathrop, California	Yes	Yes	Yes	Owned
Medford, Oregon	Yes	Yes	Yes	Owned
Mt. Juliet, Tennessee	Yes	Yes	Yes	Owned
North Liberty, Iowa (1)	Yes	Yes	Yes	Owned
Olive Branch, Mississippi	Yes	Yes	Yes	Owned
Phoenix, Arizona	Yes	Yes	Yes	Owned
Pontoon Beach, Illinois	Yes	Yes	No	Owned
Rancho Cucamonga, California	Yes	Yes	Yes	Owned
Richfield, Wisconsin	Yes	Yes	Yes	Owned
Ridgeway, Virginia	Yes	No	Yes	Owned
Seagoville, Texas	Yes	Yes	Yes	Owned
Tacoma, Washington	Yes	Yes	Yes	Owned
Trenton, Ohio	Yes	Yes	Yes	Owned
Weedsport, New York	No	Yes	Yes	Owned

(1) Corporation headquarters.

ITEM 3.    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.

ITEM 4.     MINE SAFETY DISCLOSURES

None.

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PART II

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS, AND ISSUER PURCHASES OF EQUITY SECURITIES

Trading Symbol

Our common stock trades on The NASDAQ Global Select Market under the symbol HTLD.

As of February 15, 2021, we had 272 stockholders of record of our common stock. However, we estimate that we have a significantly greater number of stockholders because a substantial number of our shares of record are held by brokers or dealers for their customers in street names.

Dividend Policy

We currently intend to continue the quarterly cash dividend program. However, future payments of cash dividends will depend upon our financial condition, results of operations and capital requirements, as well as other factors deemed relevant by the Board of Directors.

Stock Repurchase

We have a stock repurchase program with 5.4 million shares remaining authorized for repurchase as of December 31, 2020. There were 1.5 million shares repurchased in the open market during the year ended December 31, 2020 and no shares repurchased in 2019. Shares repurchased during 2020 were accounted for as treasury stock.

Shares repurchased during the three month period ended December 31, 2020 are as follows:

	(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
				6,187,085
October 1, 2020 - October 31, 2020	417,039	18.62	417,039	5,770,046
November 1, 2020 - November 30, 2020	162,038	18.53	162,038	5,608,008
December 1, 2020 - December 31, 2020	168,433	18.36	168,433	5,439,575

Subsequent to December 31, 2020, we have repurchased 0.7 million shares of our common stock for $12.9 million. This has reduced the remaining authorized shares for repurchase to 4.7 million shares as of February 15, 2021. The specific timing and amount of future repurchases will be determined by market conditions, cash flow requirements, securities law limitations, and other factors. Repurchases are expected to continue from time to time, as conditions permit, until the number of shares authorized to be repurchased have been bought, or until the authorization to repurchase is terminated, whichever occurs first. The share repurchase authorization is discretionary and has no expiration date. The repurchase program may be suspended, modified, or discontinued at any time without prior notice.

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 “Plan”) was ratified. The Plan authorized the issuance of up to 0.9 million shares and is administered by the Compensation Committee of our Board of Directors (the “Committee”). In accordance with and subject to the provisions of the Plan, the Committee has the authority to determine all provisions of awards of restricted stock, including, without limitation, the employees who will receive awards, the number of shares awarded to individual employees, the time or times when awards will be granted, restrictions and other conditions (including, for example, the lapse of time) to which the vesting of awards may be subject, and other terms and conditions and form of agreement to be entered into by us and employees subject to awards of restricted stock. Per the terms of the awards, employees receiving awards

25

will have all of the rights of a stockholder with respect to the unvested restricted shares including, but not limited to, the right to receive such cash dividends, if any, as may be declared on such shares from time to time and the right to vote such shares at any meeting of our stockholders.

The following table summarizes, as of December 31, 2020, information about the Plan:

	Number of Securities to be Issued upon Exercise of Outstanding Options, Warrants and Rights	Weighted Average Stock Price of Outstanding Options, Warrants and Rights	Number of Securities Remaining Available for Future Issuance under Equity Compensation Plans (Excluding Securities Reflected in Column (a))
	(a)	(b)	(c)
Equity compensation plan approved by stockholders	59,700	—	117,886
Total	59,700	—	117,886

Column (a) represents unvested restricted stock awards outstanding under the Plan as of December 31, 2020. The weighted average stock price on the date of grant for outstanding restricted stock awards was $20.29, which is not reflected in column (b), because restricted stock awards do not have an exercise price. Column (c) represents the maximum aggregate number of shares of restricted stock that can be issued under the Plan as of December 31, 2020. We do not have any equity compensation plans that were not approved by stockholders.

ITEM 6.    SELECTED FINANCIAL DATA

The selected consolidated financial data presented below is derived from our consolidated financial statements. The information set forth below should be read in conjunction with “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our consolidated financial statements and notes thereto within this Annual Report.

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	Year Ended December 31,
	(in thousands, except per share amounts)
	2020		2019 (1)		2018		2017 (2)		2016
Statements of Income Data:
Operating revenue	$	645,262	$	596,815	$	610,803	$	607,336	$	612,937
Operating expenses:
Salaries, wages, and benefits	269,482		240,139		227,872		236,872		231,980
Rent and purchased transportation	4,643		7,984		18,700		30,002		23,485
Fuel	86,094		101,871		110,536		104,381		91,494
Operations and maintenance	27,647		24,479		27,143		29,609		26,159
Operating taxes and licenses	14,962		14,459		16,390		16,615		15,559
Insurance and claims	22,229		17,003		17,227		18,850		24,449
Communications and utilities	5,281		4,953		6,086		5,781		4,485
Depreciation and amortization	109,937		100,212		100,519		103,690		105,578
Other operating expenses	26,398		22,781		21,506		24,666		13,385
Gain on disposal of property and equipment	(14,830)		(31,341)		(24,963)		(26,674)		(9,205)
	551,843		502,540		521,016		543,792		527,369
Operating income	93,419		94,275		89,787		63,544		85,568
Interest income	842		3,955		2,130		1,129		481
Interest expense	—		(1,052)		—		(175)		—
Income before income taxes	94,261		97,178		91,917		64,498		86,049
Federal and state income (benefit) taxes	23,455		24,211		19,240		(10,675)		29,663
Net income	$	70,806	$	72,967	$	72,677	$	75,173	$	56,386
Weighted average shares outstanding (3)
Basic	81,388		81,980		82,378		83,298		83,297
Diluted	81,444		82,024		82,410		83,336		83,365
Earnings per share
Basic	$	0.87	$	0.89	$	0.88	$	0.90	$	0.68
Diluted	$	0.87	$	0.89	$	0.88	$	0.90	$	0.68
Dividends declared per share	$	0.08	$	0.08	$	0.08	$	0.08	$	0.08
Balance Sheet data:
Net working capital	$	121,970	$	88,407	$	167,813	$	95,514	$	136,577
Total assets	$	951,176	$	898,931	$	806,213	$	789,127	$	738,228
Long-term debt (4)	$	—	$	—	$	—	$	—	$	—
Stockholders' equity	$	724,334	$	684,659	$	615,972	$	574,645	$	505,826

(1)	We acquired 100% of the outstanding stock of Millis Transfer in August 2019. Therefore, our operating results for the year ended December 31, 2019, include the operating results of Millis Transfer for only the period of August 26, 2019 to December 31, 2019.
(2)	We acquired 100% of the outstanding stock of IDC in July 2017. Therefore, our operating results for the year ended December 31, 2017, include the operating results of IDC for only the period of July 6, 2017 to December 31, 2017.
(3)	The difference between basic and diluted weighted average shares outstanding is due to the effect of unvested restricted stock granted under the 2011 Restricted Stock Award Plan.
(4)	During 2013 we entered into an unsecured reducing line of credit agreement and was later amended to provide an unsecured revolving line of credit. Maximum borrowing capacity as of December 31, 2020 was $100.0 million. Based on outstanding letters of credit, we had available borrowing capacity of $88.5 million under such line of credit.

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ITEM 7.    MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS

OF OPERATIONS

This Item 7, as well as other items of this Annual Report, 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 those sections and the Private Securities Litigation Reform Act of 1995, as amended. All statements, other than statements of historical or current 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 statements of assumptions underlying any of the foregoing. In this Item 7, statements relating to expected sources of working capital, liquidity and funds for meeting equipment purchase obligations, expected capital expenditures and incurrence of debt, future acquisitions and dispositions of and upgrades to revenue equipment, future market for used equipment, future trucking capacity, expected freight demand and volumes, future rates and prices, future impact of the acquisition of Millis Transfer and the impact of its driver training programs, future depreciation and amortization, future asset utilization, expected tractor and trailer count, expected fleet age, future driver market, expected gains on sale of equipment, expected driver compensation, expected independent contractor usage, including the classification of our independent contractors, expected rent expense, expected changes to financial controls, planned allocation of capital, future equipment costs, future income taxes, future insurance and claims, future growth, future safety performance, expected regulatory action and the impact of regulatory changes, future compliance with laws, future litigation and our potential exposure for pending legal proceedings, future goodwill impairment, future inflation, future share prices, dividends, and repurchases, if any, future fuel expense and the future effectiveness of fuel surcharge programs, and the impacts of the COVID-19 pandemic on our business operations and driver recruiting and retention, among others, are forward-looking statements. 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. 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. Known factors that could cause or contribute to such differences include, but are not limited to, those discussed in the section entitled “Risk Factors” set forth above. Readers should review and consider the factors discussed in “Risk Factors” of this Annual Report, 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 Annual Report. You are cautioned not to place undue reliance on such forward-looking statements. We expressly disclaim any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements contained herein to reflect any change in our expectations with regard thereto or any change in the events, conditions, or circumstances on which any such statement is based.

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. 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 and have been reduced to serving select dedicated customers since 2019. 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, 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.

Our headquarters is located in North Liberty, Iowa, in a low-cost environment with ready access to a skilled, educated, and industrious workforce. Our other terminals are located near major shipping corridors nationwide, affording proximity to

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customer locations, driver domiciles, and distribution centers. Approximately 80% of our terminals are located within 200 miles of the 25 largest cities in the U.S. We believe our geographic reach and terminal locations assist us with driver recruiting and retention, efficient fleet maintenance, and consistent customer engagement.

Our long-term objectives, which have not changed since we were founded in 1978, are to achieve significant growth, to operate with a low-80s operating ratio (operating expenses as a percentage of operating revenue), and to maintain a debt-free balance sheet. We maintain a disciplined approach to cost controls. We do this by scrutinizing all expenditures, prioritizing expenses that improve our drivers' experience or our customer service, minimizing non-driving personnel through proven technology when the cost of doing so is justified, and operating late-model tractors and trailers with sound warranty coverage and enhanced fuel efficiency.

Our Management’s Discussion and Analysis of Financial Condition and Results of Operations included in this document generally discusses 2020 and 2019 items and year-to-year comparisons between 2020 and 2019. Discussions of 2018 items and year-to-year comparisons between 2019 and 2018 that are not included in this document can be found in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part II, Item 7 of our Annual Report on Form 10-K for the fiscal year ended December 31, 2019.

Recent Developments

On August 26, 2019 we completed our third acquisition within seven years. We acquired all the outstanding equity of Millis Transfer. The Millis Transfer acquisition added additional dry van truckload capacity to our core operations and this resulted in increased revenues and increased operating costs after August 26, 2019. Therefore, our financial results for 2019, only include Millis Transfer activity from August 26, 2019 to December 31, 2019.     

In 2020, we generated operating revenues of $645.3 million, including fuel surcharges, net income of $70.8 million, and basic net income per share of $0.87 on basic weighted average outstanding shares of 81.4 million. This compared to operating revenues of $596.8 million, including fuel surcharges, net income of $73.0 million, and basic net income per share of $0.89 on basic weighted average shares of 82.0 million in 2019. We posted an 85.5% operating ratio (which represents operating expenses as a percentage of operating revenues) for the year ended December 31, 2020, compared to 84.2% for the same period of 2019, and an 11.0% net margin (which represents net income as a percentage of operating revenues) for 2020, compared to 12.2% in the same period of 2019. We posted an 84.0% non-GAAP adjusted operating ratio(1) (operating expenses as a percentage of operating revenues, net of fuel surcharge) for the year ended December 31, 2020 compared to 81.9% for the same period of 2019. We had total assets of $951.2 million at December 31, 2020. We achieved a return on assets of 7.5% and a return on equity of 10.0% over the year ended December 31, 2020, compared to 8.2% and 11.0% respectively, for 2019.

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(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)
	Twelve Months Ended December 31,
	2020			2019
	(in thousands)
Operating revenue	$	645,262		$	596,815
Less: Fuel surcharge revenue (non-GAAP)	61,725			74,955
Operating revenue excluding fuel surcharge revenue	583,537			521,860
Operating expenses	551,843			502,540
Less: Fuel surcharge revenue (non-GAAP)	61,725			74,955
Adjusted operating expenses	490,118			427,585
Operating income	$	93,419		$	94,275
Operating ratio	85.5		%	84.2		%
Adjusted operating ratio (non-GAAP)	84.0		%	81.9		%

(a) Adjusted operating ratio as reported in this annual report 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 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.

Our cash flow from operating activities for the twelve months ended December 31, 2020 was $178.9 million or 27.7% of operating revenues, compared to $146.4 million or 24.5% of operating revenues in 2019. During 2020, we used $111.0 million in net investing cash flows, which was primarily used for $111.2 million of net purchases of revenue equipment. We used $32.7 million in financing activities including $6.5 million used to pay dividends to our shareholders and $25.7 million for stock repurchases during 2020. As a result, our cash, cash equivalents, and restricted cash increased by $35.1 million during the year ended December 31, 2020 to $131.1 million, with no outstanding debt.

We operate in a cyclical industry. Demand for our freight services was elevated throughout all of 2018 (peak in mid-2018 and began to decline in the second half of 2018), which resulted in tight freight capacity. Throughout 2019, the general demand for freight services was at a level much lower than what was experienced throughout 2018. 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 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 2nd 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. This led to an overall increase in freight demand and favorable pricing environment as freight rates increased throughout the second half of 2020.

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

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increased freight demand which intensified during the second half of 2020. 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 previously discussed, Millis Transfer's driver training program will provide an additional source of future potential professional drivers. For 2021, we expect the industry trends experienced in the second half of 2020 will likely continue.

Growth History and Capital Allocation

In addition to 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 seven 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.

We manage our business primarily based on long-term cash flow generation prospects and return on equity, and we place less emphasis on quarterly earnings per share. When we are experiencing or expect favorable freight markets, we invest in fleet expansion internally, dependent on our ability to hire drivers that meet our qualifications, and through acquisitions. When freight markets are less favorable, we concentrate our assets on customers offering the most acceptable returns and are willing to shrink our fleet to maintain margins and limit net capital expenditures. We have also deployed available cash opportunistically toward dividends and stock repurchases. For the periods ended December 31, 2020, our operating cash flows as a percentage of operating revenues five-year average was 24.0%, our three-year average was 25.5%, and most recently for 2020 was 27.7%.

Tractor Strategy and Depreciation

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. Our tractor strategy is important to our goals and differs from the practices of many of our peers. We strive to operate a relatively new fleet to keep operating costs low, better driver comfort, and enhance dependability. We seek the flexibility to buy and sell tractors (and trailers) opportunistically to capitalize on new and used equipment markets, size our fleet to the volume of attractive freight, and manage cash tax expense. One method we use to accomplish these goals is to depreciate our new tractors (excludes assets acquired through an acquisition) for financial reporting purposes using the 125% declining balance method, in which depreciation is higher in early periods and tapers off in later periods. We believe this method more accurately reflects actual asset values and affords us the flexibility to sell tractors at most points during their life cycle without experiencing losses. In addition, the decline in depreciation during later periods is typically offset by increased repairs and maintenance expense as the tractors age, which keeps our total operating costs more uniform over the operating life of the equipment. Trailers are depreciated using the straight-line 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. We believe our revenue equipment strategy is sound over the long term. However, it can contribute to volatility in gain on sale of equipment and quarterly earnings per share. At December 31, 2020, our tractor fleet had an average age of 1.7 years and our trailer fleet had an average age of 3.7 years. During 2021, we expect the age of both our tractor and trailer fleets to decrease slightly compared to 2020, based on estimated net capital expenditures in 2021.

Fuel Costs

After salaries, wages, and benefits, and depreciation expense, fuel expense is our next highest operating cost. Containment of fuel cost continues to be one of management's top priorities. Average DOE diesel fuel prices per gallon for 2020 and 2019 were $2.55 and $3.06, respectively. The average price per gallon in 2021, through February 16, 2021, was $2.75. Fuel prices were volatile during 2020 with COVID-19 impacts generally deflating fuel prices. We cannot predict what fuel prices will be throughout 2021. We are not able to pass through all fuel price increases through fuel surcharge agreements with customers due

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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) in a rising fuel environment and is positively impacted in a declining fuel environment. We expect to continue to manage and 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, reducing tractor idle time, controlling out-of-route miles, controlling empty miles, utilizing on-board power units to minimize idling, educating drivers to save energy, trailer skirting, and increasing fuel economy through the purchase of newer, more fuel-efficient tractors.

Results of Operations

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

	Year Ended December 31,
	2020		2019
Operating revenue	100.0	%	100.0	%
Operating expenses:
Salaries, wages, and benefits	41.8	%	40.3	%
Rent and purchased transportation	0.7		1.4
Fuel	13.3		17.1
Operations and maintenance	4.3		4.1
Operating taxes and licenses	2.3		2.4
Insurance and claims	3.5		2.8
Communications and utilities	0.8		0.8
Depreciation and amortization	17.0		16.8
Other operating expenses	4.1		3.8
Gain on disposal of property and equipment	(2.3)		(5.3)
	85.5	%	84.2	%
Operating income	14.5	%	15.8	%
Interest income	0.1	%	0.7	%
Interest expense	0.0	%	(0.2)	%
Income before income taxes	14.6	%	16.3	%
Income tax expense	3.6		4.1
Net income	11.0	%	12.2	%

Year Ended December 31, 2020 Compared with the Year Ended December 31, 2019

On August 26, 2019 we completed our third acquisition within seven years. We acquired all the outstanding equity of Millis Transfer. The Millis Transfer acquisition added additional dry van truckload capacity to our core operations during the period August 26, 2019 to December 31, 2019 and for the full year of 2020.

Operating revenue increased $48.5 million (8.1%), to $645.3 million for the year ended December 31, 2020 from $596.8 million for the year ended December 31, 2019. The increase in revenue was the net result of an increase in trucking and other revenues of $61.8 million partially offset by a decrease in fuel surcharge revenue of $13.3 million. Millis Transfer contributed approximately 24.0% of the operating revenues, for the year ended December 31, 2020. Operating revenues (the total of trucking and fuel surcharge revenue) are primarily earned based on loaded miles driven in providing truckload services. The number of loaded miles is affected by general freight supply and demand trends and the number of tractors. The number of tractors is directly affected by the number of available company drivers and independent contractors providing capacity to us. During 2019, we acquired Millis Transfer and the additional drivers and operations created growth to our operating fleet during part of the third and all of the fourth quarter of 2019 and the entire year of 2020. For 2021, we expect the industry trends experienced in 2020 will likely continue due to the driver shortage within our industry that will impact recruiting and retention, exacerbated by COVID-19 impacts. We also expect driver recruiting and retention to continue to be a challenge during 2021.

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. The operating revenues increase was the result of an increase in loaded miles along with an increase in the average rate per loaded mile.

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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 decreased primarily as a result of a decrease in average DOE diesel fuel prices of 16.5% during 2020 compared to 2019, as reported by the DOE.

Salaries, wages, and benefits increased $29.4 million (12.2%), to $269.5 million for the year ended December 31, 2020 from $240.1 million in the 2019 period. Salaries, wages, and benefits increased primarily due to the addition of Millis Transfer drivers and partial year effects of recent driver pay increases, partially offset by attrition of drivers and less miles driven during 2020 as well as a decline in non-driver employees and related benefit costs for both groups. To address the demand for drivers across our industry, the Company implemented a driver wage increase for legacy Heartland Express drivers that was effective late October 2020. This equated to an approximate average increase of 6% per driver within the driver pay component of salaries, wages, and benefits expense. In addition, health insurance and workers' compensation had a net decrease of $1.0 million due to an overall net decrease in severity and frequency of claims.

Rent and purchased transportation decreased $3.4 million (42.0%), to $4.6 million for the year ended December 31, 2020 from $8.0 million in the comparable period of 2019. The decrease was attributable to a decrease in amounts paid to independent contractors of $1.6 million and a net decrease in amounts paid for operating leases of revenue equipment and leased property expense of $1.8 million. The decrease in amounts paid to independent contractors was due to fewer miles driven by independent contractors. During the year ended December 31, 2020, independent contractors accounted for 0.7% of the total fleet miles compared to 1.2% for the same period of 2019. The decreases in operating leases of revenue equipment and leased terminal property expense was due to an effort to remove leased revenue equipment acquired from IDC from our operating fleet and decreasing the number of leased terminal locations during 2019. Our rent expense related to terminal locations was further reduced in 2020 resulting from the execution of a purchase option and related property acquisition.

Fuel decreased $15.8 million (15.5%), to $86.1 million for the year ended December 31, 2020 from $101.9 million for the same period of 2019. The decrease in the DOE diesel fuel prices seen in 2020 was mostly due to a 15.7% average price decrease during the second quarter of 2020 compared to the first quarter of 2020. Fuel prices remained fairly consistent during the third and fourth quarters of 2020, although they began to increase in late 2020. This trend of fuel price increases has continued through February 2021. The latest DOE diesel fuel price in February 2021 is up 8.9% to the end of 2020 and is up 12.7% compared to the 2020 yearly average. We cannot currently predict how long and how much the average diesel prices will continue to increase.

Depreciation and amortization increased $9.7 million (9.7%), to $109.9 million during the year ended December 31, 2020 from $100.2 million in the same period of 2019. The increase is attributable to an increase in the amount of tractor and trailer depreciation expense in our legacy fleet and the increase for the addition of depreciation expense on the acquired Millis Transfer fleet, partially offset by a slight decrease in intangible asset amortization. We expect depreciation expense in 2021 to be approximately $110.0 million to $120.0 million.

Operating and maintenance expense increased $3.1 million (12.9%), to $27.6 million during the year ended December 31, 2020, from $24.5 million in the same period of 2019. Operating and maintenance costs increased mainly due to an increase in tractors and trailers and miles driven resulting from the Millis Transfer acquisition. In addition, there was an increase in maintenance activity to prepare revenue equipment for sale during 2020. There was a 93.7% increase in the quantity of tractors sold, partially offset by a 58.4% decline in volume of trailers sold during 2020 as compared to 2019.

Operating taxes and licenses expense increased $0.5 million (3.5%), to $15.0 million during the year ended December 31, 2020 from $14.5 million in 2019, due to a higher number of revenue equipment units (tractors and trailers) licensed in 2020 as compared to 2019.

Insurance and claims expense increased $5.2 million (30.7%), to $22.2 million during the year ended December 31, 2020 from $17.0 million in 2019 due primarily to an increase in premiums along with increased severity and frequency of claims. Increased premiums expense was due to a combination of increased revenue equipment units covered by our insurance policies during 2020 compared to 2019 mainly as a result of the Millis Transfer acquisition. 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.

Other operating expenses increased $3.6 million (15.9%), to $26.4 million, during the year ended December 31, 2020 from $22.8 million in 2019, due mainly to more miles driven in 2020 due to a full year of Millis Transfer fleet miles.

Gains on the disposal of property and equipment decreased $16.5 million (52.7%), to $14.8 million during the year ended December 31, 2020, from $31.3 million in the same period of 2019. The decrease was mainly due to a $15.0 million decrease in gains on sales of trailer equipment. The decrease in gains on trailer sales was due to a significant decrease in gains per unit sold

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in 2020 as compared to 2019 as well as a 58.4% decline in volume of trailers sold during 2020 as compared to 2019. We currently anticipate tractor and trailer equipment sale activity to be elevated in 2021 compared to 2020, as we expect to continue to refresh the acquired Millis Transfer fleet and to a lesser extent our legacy operating fleet. Total gains are estimated to be approximately $20 to $25 million in 2021. This expectation is based on current used equipment prices and our anticipated timing of equipment sales however the used equipment market can be volatile and could impact these expectations.

Our effective tax rate was 24.9% and 24.9% for years ended December 31, 2020 and 2019, respectively.  We expect the 2021 effective tax rate to be comparable to the 2020 effective tax rate.

Inflation and Fuel Cost

Most of our operating expenses are inflation-sensitive, with inflation generally producing increased costs of operations. During the past three years, inflation has been fairly modest with its impacts mostly related to revenue equipment prices, tire prices and compensation paid to drivers. Innovations in equipment technology, EPA mandated new engine emission requirements and driver comfort have resulted in higher tractor prices. More significant inflation has been experienced in insurance and claims cost related to health insurance and claims and also auto liability insurance and claims. We historically have limited the effects of inflation through increases in freight rates and certain cost control efforts. Over the long term, general economic growth and industry supply and demand conditions have allowed rate increases, although the rate increases received have significantly lagged the increases in tractor prices and related depreciation expense.

In addition to inflation, significant fluctuations in fuel prices can adversely affect our operating results and profitability. We have attempted to limit the effects of increases in fuel prices through certain cost control efforts and our fuel surcharge program. We impose fuel surcharges on substantially all accounts. Although we historically have been able to pass through most long-term increases in fuel prices and operating taxes to customers in the form of surcharges and higher rates, these arrangements generally do not fully protect us from short-term fuel price increases and also may prevent us from receiving the full benefit of any fuel price decreases. Additionally, we are not able to recover fuel surcharge on empty miles, out of route miles, or fuel used in idling.

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 cash flow provided by operating activities and sales of equipment. Our primary source of liquidity is cash flow provided by operating activities. We entered into a line of credit during the fourth quarter of 2013, described below, to partially finance an acquisition, including the payoff of debt we assumed. Our primary source of liquidity during 2020 and 2019 was cash flow generated from operating activities. During 2019, we were able to fund the acquisition of Millis Transfer, including pay off of acquired debt, and revenue equipment purchases with cash on hand and cash flows provided by operating activities and sales of equipment. We believe we have adequate liquidity to meet our current and projected needs in the foreseeable future. We expect to have significant capital requirements over the long-term, which we expect to fund with cash flows provided by operating activities, proceeds from the sale of used equipment, and available capacity on the line of credit. At December 31, 2020, we had $113.9 million in cash and cash equivalents, no outstanding debt, and $88.5 million available borrowing capacity on the line of credit.

Operating cash flow for 2020 was $178.9 million compared to $146.4 million for 2019. Cash flow from operating activities was 27.7% of operating revenues for the year ended December 31, 2020, compared to 24.5% for the same period of 2019. The CARES Act allows employers to defer the deposit and payment of the employer's share of Social Security taxes. As a result, we have deferred remitting payroll taxes normally paid on a weekly basis until the end of 2021 when the first half of the deferred tax payments are due and 2022 when the second half of the deferred tax payments are due. The CARES Act deferred federal payroll taxes as of December 31, 2020 was $8.9 million.

Cash flows used in investing activities were $111.0 million during 2020, representing a decrease in cash used of $21.8 million compared to cash flows used in investing activities of $132.8 million during 2019. The decrease in cash used in investing activities was mainly the result of $61.9 million used to acquire Millis Transfer in 2019, partially offset by $40.3 million more net purchases of revenue equipment in 2020, compared to net purchases of revenue equipment in 2019. We currently anticipate net capital expenditures to be approximately $80.0 million to $90.0 million for 2021.

Cash flows used in financing activities decreased $67.7 million in 2020 compared to 2019. This was primarily due to the net effect of $93.3 million cash used for repayments of debt which was acquired as part of the Millis Transfer acquisition in 2019, partially offset by $25.7 million cash used for repurchases of our common stock during 2020, as no shares were repurchased in 2019. There were no repayments of debt during 2020, as we had no indebtedness.

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We have a stock repurchase program with 5.4 million shares remaining authorized for repurchase as of December 31, 2020 and the program has no expiration date. There were 1.5 million shares repurchased in the open market during the year ended December 31, 2020 and no shares were repurchased in 2019. 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.

We paid income taxes, net of refunds, of $13.7 million in 2020, compared with $18.9 million during 2019. The decline in net payments is due to a federal refund received during 2020, as well as increased net purchases of property and equipment, that qualified for additional tax deductions resulting in a reduction in estimated tax payments.

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, Borrower and the Bank entered into the First Amendment to this Credit Agreement. The First Amendment (i) provides 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) 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) increases the letter of credit subfeature of the Credit Agreement from $20 million to $30 million, and (iv) extends 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.

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. Borrowings under the Credit Agreement can either be, at Borrower's election, (i) one-month or three-month LIBOR (Index) plus a spread between 0.700% and 0.900% per annum, based on the Company's consolidated funded debt to adjusted EBITDA ratio or (ii) Prime (Index) plus 0.0%. There is a commitment fee on the unused portion of the Revolver between 0.0725% and 0.1750% per annum, 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 during 2020.

Off-Balance Sheet Transactions

Our liquidity or financial condition is not materially affected by off-balance sheet transactions except as disclosed for purchase obligations and letters of credit.

Contractual Obligations and Commercial Commitments

The following sets forth our contractual obligations and commercial commitments at December 31, 2020.

	Payments due by period (in millions)
Contractual Obligations	Total		Less than 1 year		1–3 years		3–5 years		More than 5 years
Purchase obligation (1)	$	121.9	$	121.9	$	—	$	—	$	—
Obligations for unrecognized tax benefits (2)	5.8		—		—		—		5.8
	$	127.7	$	121.9	$	—	$	—	$	5.8

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(1)	Relates mainly to our commitment on revenue equipment purchases, net of estimated sale values of tractor equipment where we have contracted values for used equipment.
(2)	Obligations for unrecognized tax benefits represent potential liabilities and includes interest and penalties. We are unable to reasonably determine when these amounts will be settled. See below for a detailed discussion of our unrecognized tax benefits.

At December 31, 2020, we had a total of $4.9 million in gross unrecognized tax benefits included in long-term income taxes payable in the consolidated balance sheets. Of this amount, $3.9 million represents the amount of unrecognized tax benefits that, if recognized, would impact our effective tax rate as of December 31, 2020. The total net amount of accrued interest and penalties for such unrecognized tax benefits was $0.9 million at December 31, 2020, and is included in income taxes payable within the consolidated balance sheet. 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. These unrecognized tax benefits relate to risks associated with state income tax filing positions for our corporate subsidiaries. A reconciliation of the obligations for unrecognized tax benefits is as follows:

	December 31, 2020
	(in thousands)
Gross unrecognized tax benefits	$	4,937
Accrued penalties and interest associated with the unrecognized tax benefits (net of benefit of interest deduction)	864
Obligations for unrecognized tax benefits	$	5,801

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 2017 and forward. Tax years 2010 and forward are subject to audit by state tax authorities depending on the tax code and administrative practice of each state.

Critical Accounting Policies

The preparation of financial statements in conformity with U.S. generally accepted accounting principles ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Management routinely makes judgments and estimates about the effect of matters that are inherently uncertain. As the number of variables and assumptions affecting the probable future resolution of the uncertainties increase, these judgments become even more subjective and complex. We have identified certain accounting policies, described below, that are the most important to the portrayal of our current financial condition and results of operations.

The most significant accounting policies and estimates that affect the financial statements include the following:

Property, plant, and equipment

Management estimates the useful lives of revenue equipment based on estimated use of the asset. It has been our historical practice to buy new tractor and trailer equipment directly from manufacturers. Tractors and trailers are depreciated using the 125% declining balance method for new tractors (excludes assets acquired in an acquisition) and straight-line method, respectively, as management believes this is the best matching of depreciation expense with the decline in estimated tractor and trailer values based on the use of the tractor and trailers. 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. Depreciable lives of tractors and trailers are 5 and 7 years, respectively, when purchased new. Management estimates the useful lives on tractors based on average miles per truck per year

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as well as manufacturer warranty periods. We have not historically run tractors outside of manufacturer warranty periods. Management estimates the useful lives of trailers based on manufacturer warranty periods as well as our internal maintenance programs. Estimates of salvage value are based upon the expected market values of equipment at the end of the expected useful life. A key component to expected market values of equipment is our historical maintenance programs which in management's opinion are critical to the resale value of equipment. Management selects depreciation methods that it believes most accurately reflects the timing of benefit received from the applicable assets.

We periodically evaluate property and equipment for impairment upon the occurrence of events or changes in circumstances that indicate the carrying amount of assets may not be recoverable. Recoverability of assets to be held and used is evaluated by a comparison of the carrying amount of an asset group to future net undiscounted cash flows expected to be generated by the group. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount over which the carrying amount of the assets exceeds the fair value of the assets. There were no impairment charges recognized during the years ended December 31, 2020 and 2019.

Goodwill and other intangibles

Goodwill is not subject to amortization and is tested for impairment annually and whenever events or changes in circumstances indicate that impairment may have occurred. The Company performs its annual impairment test as of September 30. The Company first assesses qualitative factors to determine whether it is more likely than not (that is, a likelihood of more than 50%) that the fair value of our reporting unit is less than its carrying amount, including goodwill. If, after assessing qualitative factors, the Company determines that it is more likely than not that the fair value of our reporting unit is less than its carrying amount, then the Company performs a full fair value assessment of identifiable net assets to identify potential goodwill impairment and measure the amount of goodwill impairment loss to be recognized, if any. As of September 30, 2020, the Company’s assessment of qualitative factors confirmed our conclusion that a goodwill impairment did not occur. The significant qualitative factors considered include an increase in the Company’s revenue and continued strong cash flow. Our reporting unit had fair value significantly in excess of its carrying value.

We periodically evaluate other intangibles that are amortizable for impairment when the occurrence of events or changes in circumstances that indicate the carrying amount of assets may not be recoverable. Recoverability of assets to be held and used is evaluated by a comparison of the carrying amount of an asset group to future net undiscounted cash flows expected to be generated by the group. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount over which the carrying amount of the assets exceeds the fair value of the assets. There were no impairment charges related to goodwill or other intangibles recognized during the years ended December 31, 2020 and 2019.

Self-insurance accruals

Management estimates accruals for the self-insured portion of pending accident liability, workers’ compensation, physical damage and cargo damage claims. These accruals are based upon individual case estimates, including reserve development, and estimates of incurred-but-not-reported losses based upon past experience. Industry development as well as our historical case results are used to determine development of individual case claims. These liabilities are undiscounted and represent management's best estimate of our ultimate obligations.

Income taxes

Significant management judgment is required to determine the provision for income taxes and to determine whether deferred income taxes will be realized. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which the temporary differences are expected to be recovered or settled. A valuation allowance is required to be established for the amount of deferred income tax assets that are determined not to be realizable. We have not recorded a valuation allowance against deferred tax assets as it is management's opinion that it is more likely than not we will be able to utilize the remaining deferred tax assets based on our history of profitability and taxable income.

Management judgment is required in the accounting for uncertainty in income taxes recognized in the financial statements based on recognition threshold and measurement attributes for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. The unrecognized tax benefits relate to risks associated with state income filing positions and not federal income tax filing positions. Measurement of uncertain income tax positions is based on statutes of limitations, penalty rates, and interest rates on a state by state and year by year basis.

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New Accounting Pronouncements

See Note 1 of the consolidated financial statements for a full description of recent accounting pronouncements and the respective dates of adoption and effects on results of operations and financial position.

ITEM 7A.    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 U.S., we are not directly subject to a material foreign currency risk.

Interest Rate Risk

We had no debt outstanding at December 31, 2020. Interest rates associated with borrowings under the Credit Agreement can either be, at our election, (i) one-month or three-month LIBOR (Index) plus a spread between 0.700% and 0.900%, based on the Company's consolidated funded debt to adjusted EBITDA ratio or (ii) Prime (Index) plus 0.0%. Increases in interest rates would not currently impact our annual interest expense as we do not have any outstanding borrowings but could impact our annual interest expense on future borrowings.

Commodity Price Risk

We are subject to commodity price risk primarily with respect to purchases of fuel and rubber. 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. Based on our actual fuel purchases for 2020, assuming miles driven, fuel surcharges as a percentage of revenue, percentage of unproductive 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. 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 8.    FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The reports of Grant Thornton, LLP, our independent registered public accounting firm, our consolidated financial statements, and the notes thereto, and the financial statement schedule are included beginning on page F-1.

ITEM 9.    CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND

FINANCIAL DISCLOSURE

None.

ITEM 9A.    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.

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Based upon that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of December 31, 2020.

Management’s Annual Report on Internal Control Over Financial Reporting – Management is responsible for establishing and maintaining adequate internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act). Management, including our Chief Executive Officer and Chief Financial Officer, assessed the effectiveness of our internal control over financial reporting as of December 31, 2020. In making this assessment, our management used the criteria for effective internal control over financial reporting described in “Internal Control-Integrated Framework (2013),” issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Based on this assessment, we have concluded that our internal control over financial reporting was effective as of December 31, 2020.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate. Accordingly, even effective internal control over financial reporting can only provide reasonable assurance of achieving its control objectives.

The Company’s internal control over financial reporting as of December 31, 2020 has been audited by Grant Thornton LLP, an independent registered public accounting firm as stated in its report which is included herein.

Changes in Internal Control Over Financial Reporting – Except for the design, implementation, and testing of Millis Transfer internal controls, there were no other changes in the Company’s internal control over financial reporting (as defined in Rules 13a-15 and 15d-15 under the Exchange Act) that occurred during the twelve months ended December 31, 2020 that have materially affected, or were reasonably likely to materially affect, the Company’s internal control over financial reporting.

ITEM 9B.    OTHER INFORMATION

None.

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PART III

ITEM 10.    DIRECTORS, EXECUTIVE OFFICERS, AND CORPORATE GOVERNANCE

The information required by Item 10 of Part III, with the exception of the Code of Ethics discussed below, is incorporated herein by reference to our Proxy Statement for the annual shareholders’ meeting to be held on May 13, 2021 (the “Proxy Statement”) under the headings “Proposal 1 - Election of Directors,” and “Corporate Governance and the Board of Directors.”

Code of Ethics

We have adopted a code of ethics known as the “Code of Business Conduct and Ethics” that applies to our employees including the principal executive officer, principal financial officer, controller, and persons performing similar functions. In addition, we have adopted a code of ethics known as “Code of Ethics for Senior Financial Officers” that applies to our senior financial officers, including our chief executive officer, chief financial officer, treasurer, controller, and other senior financial officers performing similar functions who have been identified by the chief executive officer. We make these codes available on our website at www.heartlandexpress.com (and in print to any shareholder who requests them, free of charge). Information on our website is not incorporated by reference into this Annual Report.

Environmental and Sustainability

We have adopted an "Environmental and Sustainability Mission". This document portrays our commitment to the environment and sustainability through our long track record of successful business practices. Heartland's sustainability efforts are endorsed and overseen by senior management throughout the Company.

ITEM 11.    EXECUTIVE COMPENSATION

The information required by Item 11 of Part III is incorporated herein by reference to our Proxy Statement under the headings “Compensation Discussion and Analysis,” “Corporate Governance and the Board of Directors,” and “Summary of Cash and Certain Other Compensation Paid to the Named Executive Officers.”

ITEM 12.    SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT, AND RELATED STOCKHOLDER MATTERS

The information required by Item 12 of Part III is incorporated herein by reference to Item 5 of Part II of this Annual Report and the Proxy Statement under the heading “Security Ownership of Principal Stockholders, Management and Others.”

ITEM 13.    CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

The information required by Item 13 of Part III is incorporated herein by reference to the Proxy Statement under the headings “Certain Relationships and Related Transactions” and “Corporate Governance and the Board of Directors.”

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ITEM 14.    PRINCIPAL ACCOUNTING FEES AND SERVICES

The information required by Item 14 of Part III is incorporated herein by reference to the Proxy Statement under the heading “Relationship with Independent Registered Public Accounting Firm.”

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PART IV

ITEM 15.    EXHIBITS, FINANCIAL STATEMENT SCHEDULES

(a)       1.  Financial Statements and Schedules.

Report of Independent Registered Public Accounting Firm	F-1
Consolidated Balance Sheets - as of December 31, 2020 and 2019	F-4
Consolidated Statements of Comprehensive Income - Years ended December 31, 2020, 2019 and 2018	F-5
Consolidated Statements of Stockholders' Equity - Years ended December 31, 2020, 2019 and 2018	F-6
Consolidated Statements of Cash Flows - Years ended December 31, 2020, 2019 and 2018	F-7
Notes to Consolidated Financial Statements	F-9

2.  Financial Statements Schedule

Schedule II - Valuation and Qualifying Accounts and Reserves - Years ended December 31, 2020, 2019, and 2018 S-1

Schedules not listed have been omitted because they are not applicable or are not required or the information required to be set forth therein is included in the Consolidated Financial Statements or Notes thereto.

           3.  Exhibits–The exhibits required by Item 601 of Regulation S-K are listed at paragraph (b) below.

(b)           Exhibits.  The following exhibits are filed with this Form 10-K or incorporated herein by reference to the document set forth next to the exhibit listed below:

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EXHIBIT INDEX

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. Incorporated by reference to Exhibit 2.1 to the Company’s Form 10-Q for the quarter ended September 30, 2019.
3.1	Articles of Incorporation, as amended. Incorporated by reference to Exhibit 3.1 to the Company’s Form 10-Q, for the quarter ended September 30, 2017.
3.2	Amended and Restated Bylaws. Incorporated by reference to Exhibit 3.2 to the Company’s Form 10-Q, for the quarter ended September 30, 2017.
4.1**	Description of the Registrant's securities registered pursuant to Section 12 of the Securities Exchange Act of 1934. Incorporated by reference to Exhibit 4.1 to the Company's Form 10-K for the year ended December 31, 2019
10.1*	Heartland Express, Inc. 2011 Restricted Stock Award Plan. Incorporated by reference to Appendix A to the Company’s Schedule 14-A filed June 13, 2011.
10.2*	Nonqualified Deferred Compensation Plan. Incorporated by reference to Exhibit 10.3 to the Company’s Form 10-K for the year ended December 31, 2006.
10.3*	Form Award Notice under the 2011 Restricted Stock Award Plan. Incorporated by reference to Exhibit 10.3 to the Company's Form 10-K for the year ended December 31, 2011.
10.4	Credit Agreement, dated November 11, 2013, by and between Wells Fargo Bank, National Association and Heartland Express, Inc. of Iowa, Heartland Express, Inc., A&M Express, Inc., Heartland Express, Maintenance Services, Inc., Heartland Express Services, Inc., and Gordon Trucking Inc. Incorporated by reference to Exhibit 10.4 to the Company’s Form 10-K for the year ended December 31, 2013.
10.5	First Amendment to Credit Agreement, dated August 31, 2018, by and between Wells Fargo Bank, National Association and Heartland Express, Inc. of Iowa, Heartland Express, Inc., A&M Express, Inc., Heartland Express, Maintenance Services, Inc., and Heartland Express Services, Inc. Incorporated by reference to Exhibit 10.1 to the Company’s Form 10-Q, for the quarter ended September 30, 2018.
21**	Subsidiaries of the Registrant.
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 Chief 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 Chief 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)

43

* Management contract or compensatory plan or arrangement.

** Filed herewith.

*** Furnished herewith.

ITEM 16.    FORM 10-K SUMMARY

None.

44

SIGNATURES

Pursuant to the requirements of Sections 13 or 15(d) 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:	February 19, 2021	By: /s/ Michael J. Gerdin
		Michael J. Gerdin
		Chairman, President, and Chief Executive Officer
		(Principal Executive Officer)
		By: /s/ Christopher A. Strain
		Christopher A. Strain
		Vice President of Finance, Treasurer, and Chief Financial Officer
		(Principal Accounting and Financial Officer)

Pursuant to the Securities Act of 1934, this report has been signed below by the following persons on behalf of the registrant in the capacities and on the dates indicated.

Signature	Title	Date
/s/ Michael J. Gerdin	Chairman, President, Chief Executive Officer and Director (Principal Executive Officer)	February 19, 2021
Michael J. Gerdin
/s/ Christopher A. Strain	Vice President of Finance, Treasurer, and Chief Financial Officer (Principal Accounting and Financial Officer)	February 19, 2021
Christopher A. Strain
/s/ Benjamin J. Allen	Director	February 19, 2021
Benjamin J. Allen
/s/ Larry J. Gordon	Director	February 19, 2021
Larry J. Gordon
/s/ Tahira K. Hira	Director	February 19, 2021
Tahira K. Hira
/s/ David P. Millis	Director	February 19, 2021
David P. Millis
/s/ Brenda S. Neville	Director	February 19, 2021
Brenda S. Neville
/s/ James G. Pratt	Director	February 19, 2021
James G. Pratt
/s/ Michael J. Sullivan	Director	February 19, 2021
Michael J. Sullivan

45

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Board of Directors and Stockholders

Heartland Express, Inc.

Opinion on the financial statements

We have audited the accompanying consolidated balance sheets of Heartland Express, Inc. (a Nevada corporation) and subsidiaries (the “Company”) as of December 31, 2020 and 2019, the related consolidated statements of comprehensive income, stockholders’ equity, and cash flows for each of the three years in the period ended December 31, 2020, and the related notes and financial statement schedule II (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2020 and 2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2020, in conformity with accounting principles generally accepted in the United States of America.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the Company’s internal control over financial reporting as of December 31, 2020, based on criteria established in the 2013 Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”), and our report dated February 19, 2021 expressed an unqualified opinion.

Basis for opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical audit matter

The critical audit matter communicated below is a matter arising from the current period audit of the financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of the critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Auto Liability and Workers’ Compensation Claims Reserve Accrual

As described further in Notes 1 and 7 to the consolidated financial statements, the Company is self-insured for a portion of its risk related to auto liability and workers’ compensation. Self-insurance results when the Company insures itself by maintaining funds to cover possible losses rather than by purchasing an insurance policy. The Company accrues for the cost of the self-insured portion of unpaid claims by evaluating the nature and severity of individual claims and by estimating future claims development based upon historical development trends. The actual cost to settle self-insured claim liabilities may differ from the Company’s reserve estimates due to legal costs, claims that have been incurred but not reported, and various other uncertainties.

We identified the estimation of auto liability and workers’ compensation claims accruals subject to self-insurer insurance retention of $2.0 million and $1.0 million, respectively, as a critical audit matter. Auto liability and workers’ compensation unpaid claim liabilities are determined by projecting the estimated ultimate loss related to a claim, less actual costs paid to date. These estimates rely on the assumption that historical claim patterns are an accurate representation for future claims that have been incurred but not completely paid. The principal considerations for assessing auto liability and workers’ compensation claims as a critical audit matter are the high level of estimation uncertainty related to determining the severity of these types of claims, as well as the inherent subjectivity in management’s judgment in estimating the total costs to settle or dispose of these claims.

Our audit procedures related to this critical audit matter included the following, among others:

•We tested the effectiveness of controls over auto liability and workers’ compensation claims, including the completeness and accuracy of claim expenses and payments.

F-1

•We tested management’s process for determining the auto liability and workers’ compensation accrual, including evaluating the reasonableness of the methods and assumptions used in estimating the ultimate claim losses with the assistance of an actuarial specialist.

•We tested management's claim reserve estimates by inspecting source documents to test key attributes of the claims data.

/s/ GRANT THORNTON LLP

We have served as the Company’s auditor since 2018.

Tulsa, Oklahoma

February 19, 2021

F-2

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Board of Directors and Stockholders

Heartland Express, Inc.

Opinion on internal control over financial reporting

We have audited the internal control over financial reporting of Heartland Express, Inc. (a Nevada corporation) and subsidiaries (the “Company”) as of December 31, 2020, based on criteria established in the 2013 Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2020, based on criteria established in the 2013 Internal Control—Integrated Framework issued by COSO.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the consolidated financial statements of the Company as of and for the year ended December 31, 2020, and our report dated February 19, 2021 expressed an unqualified opinion on those financial statements.

Basis for opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Annual Report on Internal Control Over Financial Reporting (“Management’s Report”). Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and limitations of internal control over financial reporting

A company’s internal control over financial reporting is a process designed 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. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ GRANT THORNTON LLP

Tulsa, Oklahoma

February 19, 2021

F-3

HEARTLAND EXPRESS, INC. AND SUBSIDIARIES CONSOLIDATED BALANCE SHEETS (in thousands, except per share amounts)
ASSETS	December 31, 2020		December 31, 2019
CURRENT ASSETS
Cash and cash equivalents	$	113,852	$	76,684
Trade receivables, net	55,577		56,753
Prepaid tires	8,241		9,107
Other current assets	15,342		8,947
Income tax receivable	—		323
Total current assets	193,012		151,814
PROPERTY AND EQUIPMENT
Land and land improvements	77,525		60,637
Buildings	86,712		70,603
Leasehold improvements	—		437
Furniture and fixtures	4,807		4,255
Shop and service equipment	14,380		13,726
Revenue equipment	590,153		583,134
Construction in progress	5,783		6,351
	779,360		739,143
Less accumulated depreciation	240,080		212,856
Property and equipment, net	539,280		526,287
GOODWILL	168,295		168,295
OTHER INTANGIBLES, NET	24,746		27,136
DEFERRED INCOME TAXES, NET	8,164		6,006
OTHER ASSETS	17,679		19,393
	$	951,176	$	898,931
LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	12,751	$	11,060
Compensation and benefits	22,422		24,712
Insurance accruals	15,837		17,584
Other accruals	18,557		10,051
Income taxes payable	1,475		—
Total current liabilities	71,042		63,407
LONG-TERM LIABILITIES
Income taxes payable	5,801		5,956
Deferred income taxes, net	104,004		93,698
Insurance accruals less current portion	45,995		51,211
Total long-term liabilities	155,800		150,865
COMMITMENTS AND CONTINGENCIES (Note 12)
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 2020 and 2019; outstanding 80,653 and 82,028 in 2020 and 2019, respectively	907		907
Additional paid-in capital	4,330		4,141
Retained earnings	890,970		826,666
Treasury stock, at cost; 10,036 and 8,661 shares in 2020 and 2019, respectively	(171,873)		(147,055)
	724,334		684,659
	$	951,176	$	898,931

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

F-4

HEARTLAND EXPRESS, INC.
AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(in thousands, except per share amounts)
	Year Ended December 31,
	2020		2019		2018
OPERATING REVENUE	$	645,262	$	596,815	$	610,803
OPERATING EXPENSES
Salaries, wages and benefits	269,482		240,139		227,872
Rent and purchased transportation	4,643		7,984		18,700
Fuel	86,094		101,871		110,536
Operations and maintenance	27,647		24,479		27,143
Operating taxes and licenses	14,962		14,459		16,390
Insurance and claims	22,229		17,003		17,227
Communications and utilities	5,281		4,953		6,086
Depreciation and amortization	109,937		100,212		100,519
Other operating expenses	26,398		22,781		21,506
Gain on disposal of property and equipment	(14,830)		(31,341)		(24,963)
	551,843		502,540		521,016
Operating income	93,419		94,275		89,787
Interest income	842		3,955		2,130
Interest expense	—		(1,052)		—
Income before income taxes	94,261		97,178		91,917
Federal and state income tax expense	23,455		24,211		19,240
Net income	$	70,806	$	72,967	$	72,677
Other comprehensive income, net of tax	—		—		—
Comprehensive income	$	70,806	$	72,967	$	72,677
Net income per share
Basic	$	0.87	$	0.89	$	0.88
Diluted	$	0.87	$	0.89	$	0.88
Weighted average shares outstanding
Basic	81,388		81,980		82,378
Diluted	81,444		82,024		82,410
Dividends declared per share	$	0.08	$	0.08	$	0.08

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

F-5

HEARTLAND EXPRESS, INC.
AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
(in thousands, except per share amounts)
	Capital		Additional
	Stock,		Paid-In		Retained		Treasury
	Common		Capital		Earnings		Stock		Total
Balance, January 1, 2018	$	907	$	3,518	$	694,174	$	(123,954)	$	574,645
Net income	—		—		72,677		—		72,677
Dividends on common stock, $0.08 per share	—		—		(6,589)		—		(6,589)
Repurchases of common stock	—		—		—		(25,087)		(25,087)
Stock-based compensation, net of tax	—		(64)		—		390		326
Balance, December 31, 2018	907		3,454		760,262		(148,651)		615,972
Net income	—		—		72,967		—		72,967
Dividends on common stock, $0.08 per share	—		—		(6,563)		—		(6,563)
Issuance of common stock for acquisition	—		113		—		637		750
Stock-based compensation, net of tax	—		574		—		959		1,533
Balance, December 31, 2019	907		4,141		826,666		(147,055)		684,659
Net income	—		—		70,806		—		70,806
Dividends on common stock, $0.08 per share	—		—		(6,502)		—		(6,502)
Repurchases of common stock	—		—		—		(26,139)		(26,139)
Stock-based compensation, net of tax	—		189		—		1,321		1,510
Balance, December 31, 2020	$	907	$	4,330	$	890,970	$	(171,873)	$	724,334

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

F-6

HEARTLAND EXPRESS, INC.
AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(in thousands)
	Year Ended December 31,
OPERATING ACTIVITIES	2020		2019		2018
Net income	$	70,806	$	72,967	$	72,677
Adjustments to reconcile net income to net cash provided   by operating activities:
Depreciation and amortization	110,381		100,932		101,329
Deferred income taxes	8,148		4,699		2,755
Stock-based compensation expense	2,092		2,065		539
Gain on disposal of property and equipment	(14,830)		(31,341)		(24,963)
Changes in certain working capital items (net of acquisition):
Trade receivables	1,176		6,676		15,338
Prepaid expenses and other current assets	(3,628)		509		1,227
Accounts payable, accrued liabilities, and accrued expenses	3,062		(10,758)		(26,012)
Accrued income taxes	1,643		623		3,653
Net cash provided by operating activities	178,850		146,372		146,543
INVESTING ACTIVITIES
Proceeds from sale of property and equipment	93,160		92,942		130,752
Purchases of property and equipment, net of trades	(204,337)		(163,780)		(169,276)
Acquisition of business, net of cash acquired	—		(61,927)		—
Change in other assets	129		(26)		710
Net cash used in investing activities	(111,048)		(132,791)		(37,814)
FINANCING ACTIVITIES
Cash dividends paid	(6,502)		(6,563)		(6,589)
Shares withheld for employee taxes related to stock-based compensation	(582)		(532)		(213)
Repayments on acquired debt	—		(93,348)		—
Repurchases of common stock	(25,654)		—		(25,087)
Net cash used in financing activities	(32,738)		(100,443)		(31,889)
Net increase (decrease) in cash, cash equivalents and restricted cash	35,064		(86,862)		76,840
CASH, CASH EQUIVALENTS AND RESTRICTED CASH
Beginning of period	96,076		182,938		106,098
End of period	$	131,140	$	96,076	$	182,938
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Interest paid	$	—	$	929	$	—
Cash paid during the period for income taxes, net of refunds	$	13,664	$	18,888	$	12,832
Noncash investing and financing activities:
Purchased property and equipment in accounts payable	$	2,172	$	1,476	$	1,944
Sold revenue equipment in other current assets	$	3,383	$	1,282	$	3,783
Treasury stock acquired in accounts payable	$	485	$	—	$	—

F-7

	Year Ended December 31,
RECONCILIATION OF CASH, CASH EQUIVALENTS AND RESTRICTED CASH	2020		2019		2018
Cash and cash equivalents	$	113,852	$	76,684	$	161,448
Restricted cash included in other current assets	$	1,075	$	1,594	$	3,105
Restricted cash included in other assets	$	16,213	$	17,798	$	18,385
Total cash, cash equivalents and restricted cash	$	131,140	$	96,076	$	182,938

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

F-8

HEARTLAND EXPRESS, INC.

AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Note 1.  Significant Accounting Policies

Nature of Business

Heartland Express, Inc. is a holding company incorporated in Nevada, which owns all of the stock of Heartland Express, Inc. of Iowa, Heartland Express Services, Inc., Heartland Express Maintenance Services, Inc., Midwest Holding Group, LLC and Millis Transfer, LLC. On December 31, 2018, A & M Express, Inc. was merged into Heartland Express, Inc. of Iowa. On August 26, 2019, Heartland Express, Inc. of Iowa acquired Midwest Holding Group, Inc. and Millis Real Estate Leasing, LLC (together, "Millis Transfer"), a truckload carrier headquartered in Black River Falls, Wisconsin. Effective December 31, 2019, Millis Transfer, Inc. and Midwest Holding Group, Inc. were converted to Millis Transfer, LLC and Midwest Holding Group, LLC, respectively. Further, effective December 31, 2019, Millis Real Estate Leasing, LLC, Rivera Real Estate, LLC, and Great River Leasing, LLC were merged into Millis Transfer, LLC. We, together with our subsidiaries, are a short-to-medium haul truckload carrier (predominately 500 miles or less per load). We primarily provide nationwide asset-based dry van truckload service for major shippers from Washington to Florida and New England to California.

Principles of Consolidation

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.

Use of Estimates

The preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period.  Actual results could differ from those estimates.

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 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.

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 December 31, 2020 and 2019, restricted and designated cash and investments totaled $17.3 million and $19.4 million, respectively. At December 31, 2020, $1.1 million was included in other current assets and $16.2 million was included in other non-current assets in the consolidated balance sheets. At December 31, 2019, $1.6 million was included in other current assets and $17.8 million was included in other non-current assets in the consolidated balance sheets.  The restricted and designated funds represent deposits required by state agencies for self-insurance purposes and funds that are earmarked for a specific purpose and not for general business use.

Investments

Municipal bonds of $1.5 million at December 31, 2020 and 2019, are stated at amortized cost, are classified as held-to-maturity and are included in restricted cash in other non-current assets.  Investment income received on held-to-maturity municipal bond investments is generally exempt from federal income taxes and is recognized as earned.

F-9

Trade Receivables and Allowance for Doubtful Accounts

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 based on the credit terms for customer accounts which are generally on a net 30 day basis or less.   We use our write off history and our knowledge of uncollectible accounts in estimating the allowance for bad debts.  We review the adequacy of our allowance for doubtful accounts on a monthly basis.  We are aggressive in our collection efforts resulting in a low number of write-offs annually.  Conditions that would lead an account to be considered uncollectible include customers filing bankruptcy and the exhaustion of all practical collection efforts.  We will use the necessary legal recourse to recover as much of the receivable as is practical under the law.  Allowance for doubtful accounts was $1.1 million and $1.1 million at December 31, 2020 and 2019, respectively.

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.  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 expense of $0.4 million and $0.7 million for the years ended December 31, 2020 and 2019, respectively, has been included in communications and utilities in the consolidated statements of comprehensive income. Depreciation for financial statement purposes is computed by the straight-line method for all assets other than new tractors.  We recognize depreciation expense on new tractors (excluded tractors acquired through acquisition) at 125% declining balance method. New tractors are depreciated to salvage values of $15,000, while new trailers are depreciated to salvage values of $4,000. 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.

Lives of the assets are as follows:
	Years
Land improvements and buildings	5-30
Leasehold improvements	5-25
Furniture and fixtures	3-5
Shop and service equipment	3-10
Revenue equipment	5-7

Impairment of Long-Lived Assets

We periodically evaluate property and equipment and amortizable intangible assets for impairment upon the occurrence of events or changes in circumstances that indicate the carrying amount of assets may not be recoverable. Recoverability of assets to be held and used is evaluated by a comparison of the carrying amount of an asset group to future net undiscounted cash flows expected to be generated by the group. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount over which the carrying amount of the assets exceeds the fair value of the assets.  There were no impairment charges recognized during the years ended December 31, 2020, 2019, and 2018.

Fair Value of Financial Instruments

The fair values of cash and cash equivalents, trade receivables, held-to-maturity investments and accounts payable, which are recorded at cost, approximate fair value based on the short-term nature and high credit quality of these financial instruments.

Advertising Costs

We expense all advertising costs as incurred.  Advertising costs are included in other operating expenses in the consolidated statements of comprehensive income. Advertising expense was $1.8 million, $1.9 million, and $1.8 million for the years ended December 31, 2020, 2019, and 2018, respectively.

F-10

Goodwill

Goodwill is not subject to amortization and is tested for impairment annually and whenever events or changes in circumstances indicate that impairment may have occurred. The Company performs its annual impairment test as of September 30. The Company first assesses qualitative factors to determine whether it is more likely than not (that is, a likelihood of more than 50%) that the fair value of our reporting unit is less than its carrying amount, including goodwill. If, after assessing qualitative factors, the Company determines that it is more likely than not that the fair value of our reporting unit is less than its carrying amount, then the Company performs a full fair value assessment of identifiable net assets to identify potential goodwill impairment and measure the amount of goodwill impairment loss to be recognized, if any. As of September 30, 2020, the Company’s assessment of qualitative factors informed its conclusion that a goodwill impairment did not occur. The significant qualitative factors considered include an increase in the Company’s revenue and continued strong cash flow. Our reporting unit had fair value significantly in excess of its carrying value. Management determined that no impairment charge was required for the years ended December 31, 2020, 2019, and 2018.

Other Intangibles, Net

Other intangibles, net consists of a tradename, covenants not to compete, and customer relationships. 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. We periodically evaluate amortizable intangible assets for impairment upon occurrence of events or changes in circumstances that indicate the carrying amount of intangible assets may not be recoverable. Management determined that no intangible impairment charge was required for the years ended December 31, 2020, 2019, and 2018. See Note 5 for additional information regarding intangible assets.

Insurance Accruals

We are self-insured for auto liability, cargo loss and damage, bodily injury and property damage ("BI/PD"), and workers’ compensation. Insurance accruals reflect the estimated cost of claims, including estimated loss and loss adjustment expenses incurred but not reported, and not covered by insurance.  Accident and workers’ compensation accruals are based upon individual case estimates, including reserve development, and estimates of incurred-but-not-reported losses based upon our own historical experience and industry claim trends. Insurance accruals are not discounted. In addition to internally developed reserves and estimates, we utilize an actuarial specialist to provide an independent annual assessment of the internally developed accident and workers' compensation accruals. The cost of cargo and BI/PD insurance and claims are included in insurance and claims expense, while the costs of workers’ compensation insurance and claims are included in salaries, wages, and benefits in the consolidated statements of comprehensive income. Insurance accruals are presented as either current or non-current in the consolidated balance sheets based on our expectation of when payment will occur.

Health insurance accruals reflect the estimated cost of health related claims, including estimated expenses incurred but not reported.  The cost of health insurance and claims are included in salaries, wages and benefits in the consolidated statements of comprehensive income.  Health insurance accruals of $4.5 million and $6.0 million are included in other accruals in the consolidated balance sheets as of December 31, 2020 and 2019, respectively.

Revenue and Expense 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 $1.1 million and $1.2 million as of December 31, 2020 and 2019, 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

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these same in-process loads. The Company had no contract liabilities associated with our operations as of December 31, 2020 and 2019.

Stock-Based Compensation

We have a stock-based compensation plan that provides for the grants of restricted stock awards to our employees. We account for restricted stock awards using the fair value method of accounting for stock-based compensation. Issuances of stock upon vesting of restricted stock are made from treasury stock. Compensation expense for restricted stock grants is recognized over the requisite service period of each award and is included in salaries, wages and benefits in the consolidated statements of comprehensive income. Total compensation of $13.6 million related to all awards granted under the program has been amortized over the requisite service period for each separate vesting period as if the award is, in substance, multiple awards between 2011 and 2023.

Earnings per Share

Basic earnings per share are 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 years ended December 31, 2020, 2019, and 2018, we granted restricted shares of common stock to certain of our employees under the Company's 2011 Restricted Stock Award 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 2020, 2019, and 2018 is as follows (in thousands, except per share data):

	2020
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	70,806	81,388	$	0.87
Effect of restricted stock	—		56
Diluted EPS	$	70,806	81,444	$	0.87

	2019
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	72,967	81,980	$	0.89
Effect of restricted stock	—		44
Diluted EPS	$	72,967	82,024	$	0.89

	2018
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	72,677	82,378	$	0.88
Effect of restricted stock	—		32
Diluted EPS	$	72,677	82,410	$	0.88

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 statements 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 the temporary differences reverse.  The effect of a change in tax rates on deferred taxes is recognized in the period that the change is enacted.  We have not recorded a valuation allowance against any deferred tax assets at December 31, 2020 and 2019. In

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management’s opinion, it is more likely than not that we will be able to utilize these deferred tax assets in future periods as a result of our history of profitability, taxable income, and reversal of deferred tax liabilities.

Pursuant to the authoritative accounting guidance on income taxes, when establishing a valuation allowance, we consider future sources of taxable income such as “future reversals of existing taxable temporary differences and carry-forwards” and “tax planning strategies”.  In the event we determine that the deferred tax assets will not be realized in the future, the valuation adjustment to the deferred tax assets is charged to earnings or accumulated other comprehensive loss based on the nature of the asset giving rise to the deferred tax asset and the facts and circumstances resulting in that conclusion.

We calculate our current and deferred tax provision based on estimates and assumptions that could differ from the actual results reflected in income tax returns filed in subsequent years.  Adjustments based on filed returns are recorded when identified.

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.

New Accounting Pronouncements

In June 2016, the FASB issued ASU 2016-13, "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments". This update requires measurement and recognition of expected versus incurred credit losses for financial assets held. ASU 2016-13 is effective for annual periods beginning after December 15, 2019, and interim periods therein. We have adopted this standard effective January 1, 2020 and the impact of adoption of the standard did not have a material impact on our financial statements.

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; however, early adoption is permitted. We have adopted this standard effective January 1, 2021 and the impact of adoption of the standard did not have a material impact on our financial statements.

Note 2.  Concentrations of Credit Risk and Major Customers

Our major customers represent primarily the consumer goods, appliances, food products and automotive industries.  Credit is granted to customers on an unsecured basis.  Our five largest customers accounted for approximately 34%, 36%, and 37% of operating revenues for the years ended December 31, 2020, 2019, and 2018, respectively. Our five largest customers accounted for approximately 30% and 30% of gross accounts receivable as of December 31, 2020 and 2019, respectively.

There was no single customer that accounted for more than 10% of operating revenues for the year ended December 31, 2020. During the years ended December 31, 2019 and December 31, 2018, there was one customer that accounted for more than 10% of operating revenues at 10.9% and 12.5%, respectively. This customer had accounts receivable of $5.8 million as of December 31, 2019.

Note 3. 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 $1.1 million and $1.2 million as of December 31, 2020 and 2019, respectively.

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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 December 31, 2020 and 2019.

Total revenues recorded were $645.3 million, $596.8 million, and $610.8 million for the twelve months ended December 31, 2020, 2019, and 2018, respectively. Fuel surcharge revenues were $61.7 million, $75.0 million, and $85.3 million for the twelve months ended December 31, 2020, 2019, and 2018, respectively. Accessorial and other revenues recorded in the consolidated statements of comprehensive income collectively represented $14.3 million, $13.5 million, and $14.9 million for the twelve months ended December 31, 2020, 2019, and 2018, respectively.

Note 4. Acquisition of Millis Transfer

On August 26, 2019, Heartland Express, Inc. of Iowa (the “Buyer”) and Heartland Express, Inc., as guarantor, entered into an Acquisition and Merger Agreement with Millis Transfer. Millis Transfer is a truckload carrier headquartered in Black River Falls, Wisconsin, providing asset-based dry van truckload transportation services, including local, regional, and dedicated services.

Pursuant to the Acquisition and Merger Agreement of the Millis Transfer acquisition, the Buyer acquired all of Millis Transfer’s outstanding equity (the “Transaction”). The Buyer paid $156.0 million of total consideration, including cash (net of working capital adjustment), restricted shares of the Company's common stock, and assumed indebtedness of Millis Transfer.

With the Millis Transfer acquisition, total cash paid, net of working capital adjustment, and common stock issued of $62.7 million was funded out of the Company’s available cash and restricted shares of the Company's common stock issued from treasury stock. The transaction included the assumption of $93.3 million of Millis Transfer's indebtedness, of which no debt was outstanding at December 31, 2019. The Acquisition and Merger Agreement contains customary representations, warranties, covenants, escrow, and indemnification provisions.

The following unaudited pro forma financial information for the years ended December 31, 2018 and December 31, 2019, assume that the acquisition of Millis occurred as of January 1, 2018. Pro forma adjustments reflected in the financial information below relate to accounting policy changes, such as changes in depreciation expense of revenue equipment, amortization of intangible assets, and accounting for certain operations and maintenance costs, along with other adjustments for terminal rent expense to align Millis results with those of the Company and income tax effects for the periods presented. The net effect of these pro forma adjustments increased net income by $3.0 million and $3.6 million for the periods ended December 31, 2019 and 2018, respectively.

	Year ended	Year ended
	December 31, 2019	December 31, 2018
	(in thousands)
Operating revenue	$694,672	$760,917
Net income	$75,951	$76,259

The Millis pro forma amounts do not purport to be indicative of the results that would have actually been obtained if the acquisition had occurred at the beginning of the periods presented or that may be obtained in the future.

The results of the acquired businesses have been included in the consolidated financial statements since the date of acquisition. Millis represented 21.1% of consolidated total assets as of December 31, 2019, and represented 8.8% of operating revenue for the twelve months ended December 31, 2019. Millis acquisition related expenses of $0.5 million are included in the consolidated statement of comprehensive income within the other operating expenses line item for the twelve months ended December 31, 2019.

The allocation of the Millis purchase price is detailed in the tables below. The goodwill recognized represents expected synergies from combining the operations of the Company with Millis Transfer, as well as other intangible assets that did not meet the criteria for separate recognition. Goodwill and intangible assets recognized in the transaction are not deductible for tax purposes.

The assets and liabilities associated with Millis Transfer were recorded at their fair values as of the acquisition date and the amounts are as follows:

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MILLIS TRANSFER ACQUISITION DATE FAIR MARKET VALUES	(in thousands)
Trade and other accounts receivable	$	14,474
Other current assets	1,656
Property and equipment	117,060
Other non-current assets	802
Intangible assets	15,300
Goodwill	35,885
Total assets	185,177
Accounts payable, accrued expenses, and current portion of long-term debt	(31,737)
Insurance accruals	(4,371)
Long-term debt	(70,191)
Deferred taxes	(16,201)
Total cash paid and common stock issued	$	62,677

MILLIS TRANSFER TOTAL PURCHASE PRICE CONSIDERATION	(in thousands)
Cash paid pursuant to Stock Purchase Agreement	$	61,927
Common stock issued pursuant to the Acquisition and Merger Agreement	750
Total cash paid and common stock issued	$	62,677

Note 5. Intangible Assets 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 twelve months ended December 31, 2020. Amortization expense of $2.4 million, $2.7 million and $2.5 million for the twelve months ended December 31, 2020, 2019 and 2018, respectively, was included in depreciation and amortization in the consolidated statements of comprehensive income. Intangible assets subject to amortization consisted of the following at December 31, 2020 and 2019:

	2020
	Amortization period (years)	Gross Amount		Accumulated Amortization		Net intangible assets
		(in thousands)
Customer relationships	15-20	$	23,000	$	4,531	$	18,469
Tradename	0.5-10	12,900		8,740		4,160
Covenants not to compete	1-10	5,300		3,183		2,117
		$	41,200	$	16,454	$	24,746

	2019
	Amortization period (years)	Gross Amount		Accumulated Amortization		Net intangible assets
		(in thousands)
Customer relationships	15-20	$	23,000	$	3,221	$	19,779
Tradename	0.5-10	12,900		8,260		4,640
Covenants not to compete	1-10	5,300		2,583		2,717
		$	41,200	$	14,064	$	27,136

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Future amortization expense for intangible assets is estimated at $2.4 million for 2021, $2.3 million for 2022, $2.2 million for 2023, $1.9 million for 2024, and $1.9 million for 2025.

Changes in carrying amount of goodwill during the twelve months ended December 31, 2020 and December 31, 2019 were as follows:

	(in thousands)
Balance at December 31, 2018	$	132,410
Acquisition	35,885
Balance at December 31, 2019	$	168,295
Acquisition	—
Balance at December 31, 2020	$	168,295

Note 6.  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 was used to assist in the repayment of all debt acquired at the time of acquisition, and 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 October 31, 2018. However, on August 31, 2018, Borrower and the Bank entered into the First Amendment to this Credit Agreement. The First Amendment (i) provides 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) 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) increases the letter of credit subfeature of the Credit Agreement from $20.0 million to $30.0 million, and (iv) extends 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.

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. Borrowings under the Credit Agreement can either be, at the Borrower's election, (i) one-month or three-month LIBOR (Index) plus a spread between 0.700% and 0.900% per annum, based on the Company's consolidated funded debt to adjusted EBITDA ratio or (ii) Prime (Index) plus 0.0%. The weighted average variable annual percentage rate is not calculated since no amounts were borrowed and outstanding at December 31, 2020. There is a commitment fee on the unused portion of the Revolver between 0.0725% and 0.1750% per annum, based on the Company's consolidated funded debt to adjusted EBITDA ratio.

The Credit Agreement contains customary financial covenants including, but not limited to, (i) a maximum adjusted leverage ratio of 2:1, measured quarterly on a trailing twelve month basis, (ii) a minimum net income requirement of $1.00, measured quarterly on a trailing twelve month basis, (iii) a minimum tangible net worth of $250.0 million requirement, measured quarterly, and (iv) limitations on other indebtedness and liens. The Credit Agreement also includes customary events of default, covenants, representations and warranties, and indemnification provisions. We were in compliance with the respective financial covenants as of and for the year ended December 31, 2020 and December 31, 2019.

We had no long term debt outstanding at December 31, 2020 or 2019. Outstanding letters of credit associated with the revolving line of credit at December 31, 2020 were $11.5 million compared to $11.3 million at December 31, 2019. As of December 31, 2020, availability for future borrowing under the Credit Agreement was $88.5 million compared to $88.7 million at December 31, 2019.

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Note 7.  Auto Liability and Workers’ Compensation Insurance Accruals

We act as a self-insurer for auto liability, defined as including property damage, personal injury, or cargo based on defined insurance retention of $0.1 million under our Millis policy prior to April 1, 2020 and $1.0 million subsequent to April 1, 2020, or $2.0 million under our Heartland policy, for any individual claim based on the insured party, accident date, and circumstances of the loss event. Within the Heartland policy, there is an additional $1.0 million aggregate self-insurance corridor for claims between $2.0 million and $3.0 million. For both Heartland and Millis claims, liabilities in excess of these deductibles are covered by insurance up to $60.0 million including retention of 50% of exposure from $5.0 million to $10.0 million. We retain any liability in excess of $60.0 million. We act as a self-insurer for property damage to our tractors and trailers. Prior to April 1, 2020, Heartland and Millis claims in excess of insurance retention had different coverage features. For the Heartland policy, claims in excess of the deductible are covered up to $100.0 million. For the Millis policy, claims subsequent to August 26, 2019 and prior to April 1, 2020, we retain liability between $3.0 million and $10.0 million, while liabilities in excess of these amounts are covered by insurance up to $100.0 million. For both policies prior to April 1, 2020, we retain any liability in excess of $100.0 million.

We act as a self-insurer for workers’ compensation based on defined insurance retention of $1.0 million under our Heartland policy, which includes Millis, effective July 1, 2020. Millis had defined insurance retention of $0.5 million from August 26, 2019 through July 1, 2020. Liabilities in excess of insurance retention limits are covered by insurance. The State of Iowa initially required us to deposit $0.7 million into a trust fund as part of the self-insurance program. Earnings on this account become part of the required deposit and as of December 31, 2020 and 2019 total deposits in this account were $1.5 million. This deposit is in municipal bonds classified as held-to-maturity and is recorded in other non-current assets on the consolidated balance sheets. 

In addition, we have provided insurance carriers with letters of credit totaling approximately $13.0 million in connection with our liability and workers’ compensation insurance arrangements and self-insurance requirements of the Federal Motor Carrier Safety Administration.  There were no outstanding balances due on any letters of credit at December 31, 2020 or 2019.

Accident and workers’ compensation accruals include the estimated settlements, settlement expenses and an estimate for claims incurred but not yet reported for property damage, personal injury and public liability losses from vehicle accidents and cargo losses as well as workers’ compensation claims for amounts not covered by insurance. Accident and workers’ compensation accruals are based upon individual case estimates, including reserve development, and estimates of incurred-but-not-reported losses based upon our own historical experience and industry claim trends. Since the reported liability is an estimate, the ultimate liability may be more or less than reported. In addition to internally developed reserves and estimates, we utilize an actuarial specialist to provide an independent annual assessment of the internally developed accident and workers' compensation accruals. If adjustments to previously established accruals are required, such amounts are included in operating expenses in the current period. These accruals are recorded on an undiscounted basis. Estimated claim payments to be made within one year of the balance sheet date have been classified as insurance accruals within current liabilities as of December 31, 2020 and 2019.

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Note 8.  Income Taxes

Deferred tax assets and liabilities as of December 31 are as follows:

	2020		2019
Deferred income tax assets:	(in thousands)
Allowance for doubtful accounts	$	258	$	262
Accrued expenses	6,353		3,892
Stock-based compensation	126		178
Insurance accruals	14,283		15,054
State net operating loss carryforward	—		2,618
Federal net operating loss carryover and credits	—		8,793
Indirect tax benefits of unrecognized tax benefits	1,037		1,052
Other	221		3
Total gross deferred tax assets	22,278		31,852
Less valuation allowance	—		—
Net deferred tax assets	22,278		31,852
Deferred income tax liabilities:
Property and equipment	(98,355)		(101,843)
Goodwill and amortizable intangibles	(18,959)		(15,939)
Prepaid expenses	(804)		(1,762)
	(118,118)		(119,544)
Net deferred tax liability	$	(95,840)	$	(87,692)

The deferred tax amounts above have been classified in the accompanying consolidated balance sheets at December 31, 2020 and 2019 as follows:

	2020		2019
	(in thousands)
Noncurrent assets, net	$	8,164	$	6,006
Long-term liabilities, net	(104,004)		(93,698)
	$	(95,840)	$	(87,692)

We have not recorded a valuation allowance against any deferred tax assets at December 31, 2020 and 2019.  In management’s opinion, it is more likely than not that we will be able to utilize these deferred tax assets in future periods as a result of our history of profitability, taxable income, and reversal of deferred tax liabilities.

Income tax expense consists of the following:

	2020		2019		2018
	(in thousands)
Current income taxes:
Federal	$	10,835	$	14,122	$	11,985
State	4,472		5,698		4,498
	15,307		19,820		16,483
Deferred income taxes:
Federal	736		5,595		5,537
State	7,412		(1,204)		(2,780)
	8,148		4,391		2,757
Total	$	23,455	$	24,211	$	19,240

The income tax provision differs from the amount determined by applying the U.S. federal tax rate as follows:

F-18

	2020		2019		2018
	(in thousands)
Federal tax at statutory rate (21%, 21%, 21% respectively)	$	19,795	$	20,406	$	19,302
State taxes, net of federal benefit	5,678		3,561		2,200
Permanent differences to return	446		540		408
Return to provision adjustment	(2,615)		(392)		(1,327)
Uncertain income tax penalties and interest, net	(73)		289		(1,067)
Other	224		(193)		(276)
	$	23,455	$	24,211	$	19,240

At December 31, 2020 and December 31, 2019, we had a total of $4.9 million and $5.0 million in gross unrecognized tax benefits, respectively, included in long-term income taxes payable in the consolidated balance sheets. Of this amount, $3.9 million and $4.0 million represents the amount of unrecognized tax benefits that, if recognized, would impact our effective tax rate as of December 31, 2020 and December 31, 2019, respectively. Unrecognized tax benefits were a net decrease of $0.1 million and a net increase of $0.4 million during the years ended December 31, 2020 and 2019, respectively, due mainly to the expiration of certain statutes of limitation net of additions and settlements with respective states. This had the effect of decreasing the effective state tax rate in 2020 and increasing the effective state rate during 2019. The total net amount of accrued interest and penalties for such unrecognized tax benefits was $0.9 million and $0.9 million at December 31, 2020 and December 31, 2019, respectively, and is included in income taxes payable in the consolidated balance sheets. Net interest and penalties included in income tax expense for the years ended December 31, 2020, 2019 and 2018 was approximately $0.1 million, zero, and a benefit of $1.4 million, respectively. 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. Income tax expense was reduced during the years ended December 31, 2020, 2019 and 2018 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:

	2020		2019
	(in thousands)
Balance at January 1,	$	5,010	$	4,585
Additions based on tax positions related to current year	767		1,138
Additions for tax positions of prior years	—		124
Reductions for tax positions of prior years	(216)		—
Reductions due to lapse of applicable statute of limitations	(428)		(701)
Settlements	(196)		(136)
Balance at December 31,	$	4,937	$	5,010

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 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 2017 and forward. Tax years 2010 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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Note 9. Equity

We have a stock repurchase program with 5.4 million shares remaining authorized for repurchase as of December 31, 2020. There were 1.5 million shares repurchased in the open market during the year ended December 31, 2020, none in 2019, and 1.4 million in 2018. 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 years ended December 31, 2020, 2019 and 2018 our Board of Directors declared regular quarterly dividends totaling $6.5 million, $6.6 million, and $6.6 million for each year, respectively.  Future payment of cash dividends and the amount of such dividends will depend upon our financial conditions, our results of operations, our cash requirements, our 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 “Plan”) was ratified. The Plan made available up to 0.9 million shares for the purpose of making restricted stock grants to our eligible officers and employees. The Plan has 0.1 million shares that remain available for the purpose of making restricted stock grants at December 31, 2020. Shares granted in 2017 through 2020 have various vesting terms that range from immediate to four years from the date of grant and have share prices ranging between $18.12 and $23.37. 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 $2.1 million, $2.1 million, and $0.5 million for the years ended December 31, 2020, 2019, and 2018, respectively. Unrecognized compensation expense was $0.7 million at December 31, 2020 which will be recognized over a weighted average period of 0.9 years.

The following table summarizes our restricted stock award activity for the years ended December 31, 2020, 2019 and 2018. The vesting dates for the awards vested in 2020 occurred relatively evenly throughout the year ended December 31, 2020. The fair value of awards vested during 2020, 2019 and 2018 was $2.3 million, $1.8 million and $0.8 million, respectively.

	2020
	Number of Restricted Stock Awards ( in thousands)	Weighted Average Grant Date Fair Value
Unvested at January 1	52.1	$	20.55
Granted	119.9	20.24
Vested	(111.8)	20.38
Forfeited	(0.5)	19.32
Outstanding (unvested) at end of year	59.7	$	20.29

	2019
	Number of Restricted Stock Awards ( in thousands)	Weighted Average Grant Date Fair Value
Unvested at January 1	26.5	$	21.31
Granted	114.0	19.88
Vested	(87.9)	19.93
Forfeited	(0.5)	17.11
Outstanding (unvested) at end of year	52.1	$	20.55

F-20

	2018
	Number of Restricted Stock Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested at beginning of year	53.7	$	21.82
Granted	10.0	18.58
Vested	(35.7)	21.48
Forfeited	(1.5)	17.11
Outstanding (unvested) at end of year	26.5	$	21.31

Note 11.  Profit Sharing Plan and Retirement Plan

We have retirement savings plans (the “Retirement Savings Plans”) for substantially all employees who have completed one year of service and are 19 years of age or older. Employees may make 401(k) contributions subject to Internal Revenue Code limitations. The Retirement Savings Plans provide for a discretionary profit sharing contribution to non-driver employees and a matching contribution of a discretionary percentage to driver employees ("Heartland Plan"). Following the acquisition of Millis Transfer on August 26, 2019 a retirement savings plan ("Millis Transfer Plan") was created. The Millis Transfer Plan has the aforementioned characteristics of the Heartland Plan, but is for Millis Transfer employees. Our contributions to the Retirement Savings Plans totaled approximately $2.3 million, $1.6 million, and $1.0 million, for the years ended December 31, 2020, 2019 and 2018, respectively.

Note 12.  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 at December 31, 2020, was $121.9 million.

Note 13. Quarterly Financial Information (Unaudited)

	First		Second		Third		Fourth
	(In Thousands, Except Per Share Data)
Year ended December 31, 2020
Operating revenue	$	166,318	$	160,873	$	162,282	$	155,789
Operating income	17,326		24,989		27,339		23,765
Income before income taxes	17,703		25,146		27,510		23,902
Net income	13,238		19,182		20,714		17,672
Net income per share, basic	0.16		0.24		0.25		0.22
Net income per share, diluted	0.16		0.24		0.25		0.22
Year ended December 31, 2019
Operating revenue	$	139,536	$	142,144	$	147,908	$	167,227
Operating income	20,843		29,030		26,739		17,663
Income before income taxes	21,988		30,259		27,415		17,516
Net income	17,318		22,361		20,501		12,787
Net income per share, basic	0.21		0.27		0.25		0.16
Net income per share, diluted	0.21		0.27		0.25		0.16

Note 14.  Subsequent Events

No events occurred requiring disclosure other than the repurchase of 0.7 million shares of our common stock for $12.9 million subsequent to December 31, 2020.

F-21

SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS AND RESERVES (In Thousands, Except Per Share Data)
			Column C
Column A	Column B		Charges To				Column D		Column E
	Balance At		Cost						Balance
	Beginning		And		Other				At End
Description	of Period		Expense		Accounts		Deductions		of Period
Allowance for doubtful accounts:
Year ended December 31, 2020	$	1,100	$	—	$	—	$	—	$	1,100
Year ended December 31, 2019	900		200		—		—		1,100
Year ended December 31, 2018	1,475		—		—		575		900

See accompanying Report of Independent Registered Public Accounting Firm.

S-1

EX-21.1

Exhibit No. 21

Subsidiaries of the Registrant

		State of Incorporation
Heartland Express, Inc.	Parent	NV
Heartland Express, Inc. of Iowa	Subsidiary	IA
Heartland Express Maintenance Services, Inc.	Subsidiary	NV
Heartland Express Services, Inc.	Subsidiary	NV
Midwest Holding Group, LLC	Subsidiary	WI
Millis Transfer, LLC	Subsidiary	WI

EX-31.1

Exhibit No. 31.1

Certification

I, Michael J. Gerdin, certify that:

1	I have reviewed this annual report on Form 10-K 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 annual 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 annual 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 annual 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 annual report based on such evaluation; and
	d)	Disclosed in this annual 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:	February 19, 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 annual report on Form 10-K 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 annual 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 annual 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 annual 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 annual report based on such evaluation; and
	d)	Disclosed in this annual 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:	February 19, 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

CHIEF 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 Annual Report of Heartland Express, Inc. (the "Company"), on Form 10-K for the period ended December 31, 2020 (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:	February 19, 2021	By:	/s/ Michael J. Gerdin
			Michael J. Gerdin
			Chairman, President and Chief Executive Officer

EX-32.2

Exhibit No. 32.2

CERTIFICATION OF

CHIEF 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 Annual Report of Heartland Express, Inc. (the "Company"), on Form 10-K for the period ended December 31, 2020 (the "Report"), filed with the Securities and Exchange Commission, I, Christopher A. Strain, Vice President of Finance, Treasurer, Secretary, 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:	February 19, 2021	By:	/s/ Christopher A. Strain
			Christopher A. Strain
			Vice President of Finance
			Treasurer, and Chief Financial Officer

XML

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2020	Feb. 15, 2021	Jun. 30, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Document Information [Line Items]
Entity Registrant Name	HEARTLAND EXPRESS, INC.
Entity Central Index Key	0000799233
Document Type	10-K
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Shell Company	false
Entity Current Reporting Status	Yes
Amendment Flag	false
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		79,977,102
Unvested, Number of Restricted Stock Awards (in shares)	59,700	53,700		52,150	26,500	53,700
Entity Public Float			$ 0.9
City Area Code	319
Local Phone Number	626-3600
Entity Incorporation, State or Country Code	NV
Entity File Number	0-15087
Entity Address, Address Line One	901 Heartland Way
Entity Address, City or Town	North Liberty
Entity Address, State or Province	IA
Security Exchange Name	NASDAQ
Entity Address, Postal Zip Code	52317
Entity Tax Identification Number	93-0926999
Document Transition Report	false
Entity Interactive Data Current	Yes
Trading Symbol	HTLD
Document Annual Report	true
Title of 12(g) Security	Common Stock, $0.01 par value
ICFR Auditor Attestation Flag	true

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
CURRENT ASSETS
Cash and Cash Equivalents, at Carrying Value	$ 113,852	$ 76,684
Trade receivables, net	55,577	56,753
Prepaid tires	8,241	9,107
Other current assets	15,342	8,947
Income tax receivable	0	323
Total current assets	193,012	151,814
PROPERTY AND EQUIPMENT
Land and land improvements	77,525	60,637
Buildings	86,712	70,603
Leasehold improvements	0	437
Furniture and fixtures	4,807	4,255
Shop and service equipment	14,380	13,726
Revenue equipment	590,153	583,134
Construction in progress	5,783	6,351
Property and equipment, gross	779,360	739,143
Less accumulated depreciation	240,080	212,856
Property and equipment, net	539,280	526,287
Goodwill	168,295	168,295
OTHER INTANGIBLES, NET	24,746	27,136
Deferred Income Tax Assets, Net	8,164	6,006
OTHER ASSETS	17,679	19,393
Assets	951,176	898,931
CURRENT LIABILITIES
Accounts payable and accrued liabilities	12,751	11,060
Compensation and benefits	22,422	24,712
Insurance accruals	15,837	17,584
Other Accrued Liabilities	18,557	10,051
Accrued Income Taxes, Current	1,475	0
Total current liabilities	71,042	63,407
LONG-TERM LIABILITIES
Income taxes payable	5,801	5,956
Deferred Income Taxes and Other Tax Liabilities, Noncurrent	104,004	93,698
Insurance accruals less current portion	45,995	51,211
Total long-term liabilities	155,800	150,865
COMMITMENTS AND CONTINGENCIES (Note 12)
STOCKHOLDERS' EQUITY
Preferred stock, par value $.01; authorized 5,000 shares; none issued	0	0
Capital stock, common, $.01 par value; authorized 395,000 shares; issued 90,689 in 2020 and 2019; outstanding 80,653 and 82,028 in 2020 and 2019, respectively	907	907
Additional paid-in capital	4,330	4,141
Retained earnings	890,970	826,666
Treasury stock, at cost; 10,036 and 8,661 shares in 2020 and 2019, respectively	(171,873)	(147,055)
Stockholders' Equity Attributable to Parent	724,334	684,659
Liabilities and Stockholders' Equity	$ 951,176	$ 898,931

XML

Consolidated Balance Sheets Parentheticals - $ / shares shares in Thousands	Dec. 31, 2020	Dec. 31, 2019
Consolidated Balance Sheets Parentheticals [Abstract]
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	80,653	82,028
Treasury Stock, Shares	10,036	8,661

XML

Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
OPERATING REVENUE	$ 645,262	$ 596,815	$ 610,803
Operating Expenses
Salaries, wages and benefits	269,482	240,139	227,872
Rent and purchased transportation	4,643	7,984	18,700
Fuel	86,094	101,871	110,536
Operations and maintenance	27,647	24,479	27,143
Operating taxes and licenses	14,962	14,459	16,390
Insurance and claims	22,229	17,003	17,227
Communications and utilities	5,281	4,953	6,086
Depreciation and amortization	109,937	100,212	100,519
Other operating expenses	26,398	22,781	21,506
Gain on disposal of property and equipment	(14,830)	(31,341)	(24,963)
Total operating expenses	551,843	502,540	521,016
Operating income	93,419	94,275	89,787
Interest income	842	3,955	2,130
Interest expense	0	(1,052)	0
Income before income taxes	94,261	97,178	91,917
Federal and state income tax expense	23,455	24,211	19,240
Net income	70,806	72,967	72,677
Other comprehensive income, net of tax	0	0	0
Comprehensive income	$ 70,806	$ 72,967	$ 72,677
Net income per share
Basic	$ 0.87	$ 0.89	$ 0.88
Diluted	$ 0.87	$ 0.89	$ 0.88
Weighted average shares outstanding
Basic	81,388	81,980	82,378
Diluted	81,444	82,024	82,410
Dividends declared per share	$ 0.08	$ 0.08	$ 0.08

XML

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Capital Stock, Common	Additional Paid-in Capital	Retained Earnings	Treasury Stock
Balance at Dec. 31, 2017	$ 574,645	$ 907	$ 3,518	$ 694,174	$ (123,954)
Net income	72,677	0	0	72,677	0
Dividends on common stock	(6,589)	0	0	(6,589)	0
Stock-based compensation, net of tax	326	0	(64)	0	390
Stock Repurchased During Period, Value	(25,087)	0	0	0	(25,087)
Balance at Dec. 31, 2018	615,972	907	3,454	760,262	(148,651)
Net income	72,967	0	0	72,967	0
Dividends on common stock	(6,563)	0	0	(6,563)	0
Stock-based compensation, net of tax	1,533	0	574	0	959
Stock Issued During Period, Value	750	0	113	0	637
Balance at Dec. 31, 2019	684,659	907	4,141	826,666	(147,055)
Net income	70,806	0	0	70,806	0
Dividends on common stock	(6,502)	0	0	(6,502)	0
Stock-based compensation, net of tax	1,510	0	189	0	1,321
Stock Repurchased During Period, Value	(26,139)	0	0	0	(26,139)
Balance at Dec. 31, 2020	$ 724,334	$ 907	$ 4,330	$ 890,970	$ (171,873)

XML

Consolidated Statement of Stockholders' Equity Parentheticals - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Dividends declared per share	$ 0.08	$ 0.08	$ 0.08

XML

Consolidated Statements of Cash Flows $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
OPERATING ACTIVITIES
Net income	$ 70,806	$ 72,967	$ 72,677
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	110,381	100,932	101,329
Deferred income taxes	8,148	4,699	2,755
Stock-based Compensation	2,092	2,065	539
Gain on disposal of property and equipment	(14,830)	(31,341)	(24,963)
Changes in certain working capital items:
Trade receivables	1,176	6,676	15,338
Prepaid expenses and other current assets	(3,628)	509	1,227
Accounts payable, accrued liabilities, and accrued expenses	3,062	(10,758)	(26,012)
Accrued income taxes	1,643	623	3,653
Net cash provided by operating activities	178,850	146,372	146,543
INVESTING ACTIVITIES
Proceeds from sale of property and equipment	93,160	92,942	130,752
Purchases of property and equipment, net of trades	(204,337)	(163,780)	(169,276)
Acquisition of business, net of cash acquired	0	(61,927)	0
Change in other assets	129	(26)	710
Net cash (used in) provided by investing activities	(111,048)	(132,791)	(37,814)
FINANCING ACTIVITIES
Cash dividends paid	(6,502)	(6,563)	(6,589)
Shares withheld for employee taxes related to stock-based compensation	(582)	(532)	(213)
Repayments on acquired debt	0	(93,348)	0
Repurchases of common stock	(25,654)	0	(25,087)
Net cash used in financing activities	(32,738)	(100,443)	(31,889)
Net increase (decrease) in cash, cash equivalents and restricted cash	35,064	(86,862)	76,840
CASH, CASH EQUIVALENTS AND RESTRICTED CASH
Beginning of period	96,076	182,938	106,098
End of Period	131,140	96,076	182,938
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Interest Paid	0	929	0
Cash paid during the period for income taxes, net of refunds	13,664	18,888	12,832
Noncash investing and financing activities:
Purchased property and equipment in accounts payable	2,172	1,476	1,944
Sold revenue equipment in other current assets	3,383	1,282	3,783
Treasury stock acquired in accounts payable	485	0	0
RECONCILIATION OF CASH, CASH EQUIVALENTS AND RESTRICTED CASH
Cash and Cash Equivalents	113,852	76,684	161,448
Restricted Cash included in other current assets	1,075	1,594	3,105
Restricted Cash included in other assets	16,213	17,798	18,385
End of Period	$ 131,140	$ 96,076	$ 182,938

XML

Significant Accounting Policies

12 Months Ended

Dec. 31, 2020

Significant Accounting Policies [Abstract]

Significant Accounting Policies

Significant Accounting Policies

Nature of Business

Heartland Express, Inc. is a holding company incorporated in Nevada, which owns all of the stock of Heartland Express, Inc. of Iowa, Heartland Express Services, Inc., Heartland Express Maintenance Services, Inc., Midwest Holding Group, LLC and Millis Transfer, LLC. On December 31, 2018, A & M Express, Inc. was merged into Heartland Express, Inc. of Iowa. On August 26, 2019, Heartland Express, Inc. of Iowa acquired Midwest Holding Group, Inc. and Millis Real Estate Leasing, LLC (together, "Millis Transfer"), a truckload carrier headquartered in Black River Falls, Wisconsin. Effective December 31, 2019, Millis Transfer, Inc. and Midwest Holding Group, Inc. were converted to Millis Transfer, LLC and Midwest Holding Group, LLC, respectively. Further, effective December 31, 2019, Millis Real Estate Leasing, LLC, Rivera Real Estate, LLC, and Great River Leasing, LLC were merged into Millis Transfer, LLC. We, together with our subsidiaries, are a short-to-medium haul truckload carrier (predominately 500 miles or less per load). We primarily provide nationwide asset-based dry van truckload service for major shippers from Washington to Florida and New England to California.

Principles of Consolidation

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.

Use of Estimates

The preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period.  Actual results could differ from those estimates.

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 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.

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 December 31, 2020 and 2019, restricted and designated cash and investments totaled $17.3 million and $19.4 million, respectively. At December 31, 2020, $1.1 million was included in other current assets and $16.2 million was included in other non-current assets in the consolidated balance sheets. At December 31, 2019, $1.6 million was included in other current assets and $17.8 million was included in other non-current assets in the consolidated balance sheets.  The restricted and designated funds represent deposits required by state agencies for self-insurance purposes and funds that are earmarked for a specific purpose and not for general business use.

Investments

Municipal bonds of $1.5 million at December 31, 2020 and 2019, are stated at amortized cost, are classified as held-to-maturity and are included in restricted cash in other non-current assets.  Investment income received on held-to-maturity municipal bond investments is generally exempt from federal income taxes and is recognized as earned.

Trade Receivables and Allowance for Doubtful Accounts

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 based on the credit terms for customer accounts which are generally on a net 30 day basis or less.   We use our write off history and our knowledge of uncollectible accounts in estimating the allowance for bad debts.  We review the adequacy of our allowance for doubtful accounts on a monthly basis.  We are aggressive in our collection efforts resulting in a low number of write-offs annually.  Conditions that would lead an account to be considered uncollectible include customers filing bankruptcy and the exhaustion of all practical collection efforts.  We will use the necessary legal recourse to recover as much of the receivable as is practical under the law.  Allowance for doubtful accounts was $1.1 million and $1.1 million at December 31, 2020 and 2019, respectively.

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.  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 expense of $0.4 million and $0.7 million for the years ended December 31, 2020 and 2019, respectively, has been included in communications and utilities in the consolidated statements of comprehensive income. Depreciation for financial statement purposes is computed by the straight-line method for all assets other than new tractors.  We recognize depreciation expense on new tractors (excluded tractors acquired through acquisition) at 125% declining balance method. New tractors are depreciated to salvage values of $15,000, while new trailers are depreciated to salvage values of $4,000. 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.

Lives of the assets are as follows:
	Years
Land improvements and buildings	5-30
Leasehold improvements	5-25
Furniture and fixtures	3-5
Shop and service equipment	3-10
Revenue equipment	5-7

Impairment of Long-Lived Assets

We periodically evaluate property and equipment and amortizable intangible assets for impairment upon the occurrence of events or changes in circumstances that indicate the carrying amount of assets may not be recoverable. Recoverability of assets to be held and used is evaluated by a comparison of the carrying amount of an asset group to future net undiscounted cash flows expected to be generated by the group. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount over which the carrying amount of the assets exceeds the fair value of the assets.  There were no impairment charges recognized during the years ended December 31, 2020, 2019, and 2018.

Fair Value of Financial Instruments

The fair values of cash and cash equivalents, trade receivables, held-to-maturity investments and accounts payable, which are recorded at cost, approximate fair value based on the short-term nature and high credit quality of these financial instruments.

Advertising Costs

We expense all advertising costs as incurred.  Advertising costs are included in other operating expenses in the consolidated statements of comprehensive income. Advertising expense was $1.8 million, $1.9 million, and $1.8 million for the years ended December 31, 2020, 2019, and 2018, respectively.

Goodwill

Goodwill is not subject to amortization and is tested for impairment annually and whenever events or changes in circumstances indicate that impairment may have occurred. The Company performs its annual impairment test as of September 30. The Company first assesses qualitative factors to determine whether it is more likely than not (that is, a likelihood of more than 50%) that the fair value of our reporting unit is less than its carrying amount, including goodwill. If, after assessing qualitative factors, the Company determines that it is more likely than not that the fair value of our reporting unit is less than its carrying amount, then the Company performs a full fair value assessment of identifiable net assets to identify potential goodwill impairment and measure the amount of goodwill impairment loss to be recognized, if any. As of September 30, 2020, the Company’s assessment of qualitative factors informed its conclusion that a goodwill impairment did not occur. The significant qualitative factors considered include an increase in the Company’s revenue and continued strong cash flow. Our reporting unit had fair value significantly in excess of its carrying value. Management determined that no impairment charge was required for the years ended December 31, 2020, 2019, and 2018.

Other Intangibles, Net

Other intangibles, net consists of a tradename, covenants not to compete, and customer relationships. 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. We periodically evaluate amortizable intangible assets for impairment upon occurrence of events or changes in circumstances that indicate the carrying amount of intangible assets may not be recoverable. Management determined that no intangible impairment charge was required for the years ended December 31, 2020, 2019, and 2018. See Note 5 for additional information regarding intangible assets.

Insurance Accruals

We are self-insured for auto liability, cargo loss and damage, bodily injury and property damage ("BI/PD"), and workers’ compensation. Insurance accruals reflect the estimated cost of claims, including estimated loss and loss adjustment expenses incurred but not reported, and not covered by insurance.  Accident and workers’ compensation accruals are based upon individual case estimates, including reserve development, and estimates of incurred-but-not-reported losses based upon our own historical experience and industry claim trends. Insurance accruals are not discounted. In addition to internally developed reserves and estimates, we utilize an actuarial specialist to provide an independent annual assessment of the internally developed accident and workers' compensation accruals. The cost of cargo and BI/PD insurance and claims are included in insurance and claims expense, while the costs of workers’ compensation insurance and claims are included in salaries, wages, and benefits in the consolidated statements of comprehensive income. Insurance accruals are presented as either current or non-current in the consolidated balance sheets based on our expectation of when payment will occur.

Health insurance accruals reflect the estimated cost of health related claims, including estimated expenses incurred but not reported.  The cost of health insurance and claims are included in salaries, wages and benefits in the consolidated statements of comprehensive income.  Health insurance accruals of $4.5 million and $6.0 million are included in other accruals in the consolidated balance sheets as of December 31, 2020 and 2019, respectively.

Revenue and Expense 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 $1.1 million and $1.2 million as of December 31, 2020 and 2019, 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 December 31, 2020 and 2019.

Stock-Based Compensation

We have a stock-based compensation plan that provides for the grants of restricted stock awards to our employees. We account for restricted stock awards using the fair value method of accounting for stock-based compensation. Issuances of stock upon vesting of restricted stock are made from treasury stock. Compensation expense for restricted stock grants is recognized over the requisite service period of each award and is included in salaries, wages and benefits in the consolidated statements of comprehensive income. Total compensation of $13.6 million related to all awards granted under the program has been amortized over the requisite service period for each separate vesting period as if the award is, in substance, multiple awards between 2011 and 2023.

Earnings per Share

Basic earnings per share are 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 years ended December 31, 2020, 2019, and 2018, we granted restricted shares of common stock to certain of our employees under the Company's 2011 Restricted Stock Award 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 2020, 2019, and 2018 is as follows (in thousands, except per share data):

	2020
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	70,806	81,388	$	0.87
Effect of restricted stock	—		56
Diluted EPS	$	70,806	81,444	$	0.87

	2019
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	72,967	81,980	$	0.89
Effect of restricted stock	—		44
Diluted EPS	$	72,967	82,024	$	0.89

	2018
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	72,677	82,378	$	0.88
Effect of restricted stock	—		32
Diluted EPS	$	72,677	82,410	$	0.88

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 statements 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 the temporary differences reverse.  The effect of a change in tax rates on deferred taxes is recognized in the period that the change is enacted.  We have not recorded a valuation allowance against any deferred tax assets at December 31, 2020 and 2019. In

management’s opinion, it is more likely than not that we will be able to utilize these deferred tax assets in future periods as a result of our history of profitability, taxable income, and reversal of deferred tax liabilities.

Pursuant to the authoritative accounting guidance on income taxes, when establishing a valuation allowance, we consider future sources of taxable income such as “future reversals of existing taxable temporary differences and carry-forwards” and “tax planning strategies”.  In the event we determine that the deferred tax assets will not be realized in the future, the valuation adjustment to the deferred tax assets is charged to earnings or accumulated other comprehensive loss based on the nature of the asset giving rise to the deferred tax asset and the facts and circumstances resulting in that conclusion.

We calculate our current and deferred tax provision based on estimates and assumptions that could differ from the actual results reflected in income tax returns filed in subsequent years.  Adjustments based on filed returns are recorded when identified.

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.

New Accounting Pronouncements

In June 2016, the FASB issued ASU 2016-13, "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments". This update requires measurement and recognition of expected versus incurred credit losses for financial assets held. ASU 2016-13 is effective for annual periods beginning after December 15, 2019, and interim periods therein. We have adopted this standard effective January 1, 2020 and the impact of adoption of the standard did not have a material impact on our financial statements.

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; however, early adoption is permitted. We have adopted this standard effective January 1, 2021 and the impact of adoption of the standard did not have a material impact on our financial statements.

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Concentrations of Credit Risk and Major Customers

12 Months Ended

Dec. 31, 2020

Concentrations of Credit Risk and Major Customers [Abstract]

Concentration of Credit Risk and Major Customers

Concentrations of Credit Risk and Major Customers

Our major customers represent primarily the consumer goods, appliances, food products and automotive industries.  Credit is granted to customers on an unsecured basis.  Our five largest customers accounted for approximately 34%, 36%, and 37% of operating revenues for the years ended December 31, 2020, 2019, and 2018, respectively. Our five largest customers accounted for approximately 30% and 30% of gross accounts receivable as of December 31, 2020 and 2019, respectively.

There was no single customer that accounted for more than 10% of operating revenues for the year ended December 31, 2020. During the years ended December 31, 2019 and December 31, 2018, there was one customer that accounted for more than 10% of operating revenues at 10.9% and 12.5%, respectively. This customer had accounts receivable of $5.8 million as of December 31, 2019.

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Revenue Recognition (Notes)

12 Months Ended

Dec. 31, 2020

Revenue Recognition and Deferred Revenue [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 $1.1 million and $1.2 million as of December 31, 2020 and 2019, 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 December 31, 2020 and 2019.

Total revenues recorded were $645.3 million, $596.8 million, and $610.8 million for the twelve months ended December 31, 2020, 2019, and 2018, respectively. Fuel surcharge revenues were $61.7 million, $75.0 million, and $85.3 million for the twelve months ended December 31, 2020, 2019, and 2018, respectively. Accessorial and other revenues recorded in the consolidated statements of comprehensive income collectively represented $14.3 million, $13.5 million, and $14.9 million for the twelve months ended December 31, 2020, 2019, and 2018, respectively.

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Acquisition of Millis Transfer (Notes)

12 Months Ended

Dec. 31, 2020

Business Combinations [Abstract]

Business Combination Disclosure [Text Block]

Acquisition of Millis Transfer

On August 26, 2019, Heartland Express, Inc. of Iowa (the “Buyer”) and Heartland Express, Inc., as guarantor, entered into an Acquisition and Merger Agreement with Millis Transfer. Millis Transfer is a truckload carrier headquartered in Black River Falls, Wisconsin, providing asset-based dry van truckload transportation services, including local, regional, and dedicated services.

Pursuant to the Acquisition and Merger Agreement of the Millis Transfer acquisition, the Buyer acquired all of Millis Transfer’s outstanding equity (the “Transaction”). The Buyer paid $156.0 million of total consideration, including cash (net of working capital adjustment), restricted shares of the Company's common stock, and assumed indebtedness of Millis Transfer.

With the Millis Transfer acquisition, total cash paid, net of working capital adjustment, and common stock issued of $62.7 million was funded out of the Company’s available cash and restricted shares of the Company's common stock issued from treasury stock. The transaction included the assumption of $93.3 million of Millis Transfer's indebtedness, of which no debt was outstanding at December 31, 2019. The Acquisition and Merger Agreement contains customary representations, warranties, covenants, escrow, and indemnification provisions.

The following unaudited pro forma financial information for the years ended December 31, 2018 and December 31, 2019, assume that the acquisition of Millis occurred as of January 1, 2018. Pro forma adjustments reflected in the financial information below relate to accounting policy changes, such as changes in depreciation expense of revenue equipment, amortization of intangible assets, and accounting for certain operations and maintenance costs, along with other adjustments for terminal rent expense to align Millis results with those of the Company and income tax effects for the periods presented. The net effect of these pro forma adjustments increased net income by $3.0 million and $3.6 million for the periods ended December 31, 2019 and 2018, respectively.

	Year ended	Year ended
	December 31, 2019	December 31, 2018
	(in thousands)
Operating revenue	$694,672	$760,917
Net income	$75,951	$76,259

The Millis pro forma amounts do not purport to be indicative of the results that would have actually been obtained if the acquisition had occurred at the beginning of the periods presented or that may be obtained in the future.

The results of the acquired businesses have been included in the consolidated financial statements since the date of acquisition. Millis represented 21.1% of consolidated total assets as of December 31, 2019, and represented 8.8% of operating revenue for the twelve months ended December 31, 2019. Millis acquisition related expenses of $0.5 million are included in the consolidated statement of comprehensive income within the other operating expenses line item for the twelve months ended December 31, 2019.

The allocation of the Millis purchase price is detailed in the tables below. The goodwill recognized represents expected synergies from combining the operations of the Company with Millis Transfer, as well as other intangible assets that did not meet the criteria for separate recognition. Goodwill and intangible assets recognized in the transaction are not deductible for tax purposes.

The assets and liabilities associated with Millis Transfer were recorded at their fair values as of the acquisition date and the amounts are as follows:

MILLIS TRANSFER ACQUISITION DATE FAIR MARKET VALUES	(in thousands)
Trade and other accounts receivable	$	14,474
Other current assets	1,656
Property and equipment	117,060
Other non-current assets	802
Intangible assets	15,300
Goodwill	35,885
Total assets	185,177
Accounts payable, accrued expenses, and current portion of long-term debt	(31,737)
Insurance accruals	(4,371)
Long-term debt	(70,191)
Deferred taxes	(16,201)
Total cash paid and common stock issued	$	62,677

MILLIS TRANSFER TOTAL PURCHASE PRICE CONSIDERATION	(in thousands)
Cash paid pursuant to Stock Purchase Agreement	$	61,927
Common stock issued pursuant to the Acquisition and Merger Agreement	750
Total cash paid and common stock issued	$	62,677

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Intangible Assets and Goodwill

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets and Goodwill

Intangible Assets 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 twelve months ended December 31, 2020. Amortization expense of $2.4 million, $2.7 million and $2.5 million for the twelve months ended December 31, 2020, 2019 and 2018, respectively, was included in depreciation and amortization in the consolidated statements of comprehensive income. Intangible assets subject to amortization consisted of the following at December 31, 2020 and 2019:

	2020
	Amortization period (years)	Gross Amount		Accumulated Amortization		Net intangible assets
		(in thousands)
Customer relationships	15-20	$	23,000	$	4,531	$	18,469
Tradename	0.5-10	12,900		8,740		4,160
Covenants not to compete	1-10	5,300		3,183		2,117
		$	41,200	$	16,454	$	24,746

	2019
	Amortization period (years)	Gross Amount		Accumulated Amortization		Net intangible assets
		(in thousands)
Customer relationships	15-20	$	23,000	$	3,221	$	19,779
Tradename	0.5-10	12,900		8,260		4,640
Covenants not to compete	1-10	5,300		2,583		2,717
		$	41,200	$	14,064	$	27,136

Future amortization expense for intangible assets is estimated at $2.4 million for 2021, $2.3 million for 2022, $2.2 million for 2023, $1.9 million for 2024, and $1.9 million for 2025.

Changes in carrying amount of goodwill during the twelve months ended December 31, 2020 and December 31, 2019 were as follows:

	(in thousands)
Balance at December 31, 2018	$	132,410
Acquisition	35,885
Balance at December 31, 2019	$	168,295
Acquisition	—
Balance at December 31, 2020	$	168,295

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Long-Term Debt (Notes)

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Line of Credit and Long Term Debt

Long-Term Debt

In November 2013, Heartland Express, Inc. of Iowa, (the "Borrower"), a wholly owned subsidiary of the Company, entered into a Credit Agreement with Wells Fargo Bank, National Association, (the “Bank”). Pursuant to the Credit Agreement, the Bank provided a five-year, $250.0 million unsecured revolving line of credit, which was used to assist in the repayment of all debt acquired at the time of acquisition, and 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 October 31, 2018. However, on August 31, 2018, Borrower and the Bank entered into the First Amendment to this Credit Agreement. The First Amendment (i) provides 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) 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) increases the letter of credit subfeature of the Credit Agreement from $20.0 million to $30.0 million, and (iv) extends 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.

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. Borrowings under the Credit Agreement can either be, at the Borrower's election, (i) one-month or three-month LIBOR (Index) plus a spread between 0.700% and 0.900% per annum, based on the Company's consolidated funded debt to adjusted EBITDA ratio or (ii) Prime (Index) plus 0.0%. The weighted average variable annual percentage rate is not calculated since no amounts were borrowed and outstanding at December 31, 2020. There is a commitment fee on the unused portion of the Revolver between 0.0725% and 0.1750% per annum, based on the Company's consolidated funded debt to adjusted EBITDA ratio.

The Credit Agreement contains customary financial covenants including, but not limited to, (i) a maximum adjusted leverage ratio of 2:1, measured quarterly on a trailing twelve month basis, (ii) a minimum net income requirement of $1.00, measured quarterly on a trailing twelve month basis, (iii) a minimum tangible net worth of $250.0 million requirement, measured quarterly, and (iv) limitations on other indebtedness and liens. The Credit Agreement also includes customary events of default, covenants, representations and warranties, and indemnification provisions. We were in compliance with the respective financial covenants as of and for the year ended December 31, 2020 and December 31, 2019.

We had no long term debt outstanding at December 31, 2020 or 2019. Outstanding letters of credit associated with the revolving line of credit at December 31, 2020 were $11.5 million compared to $11.3 million at December 31, 2019. As of December 31, 2020, availability for future borrowing under the Credit Agreement was $88.5 million compared to $88.7 million at December 31, 2019.

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Accident and Workers' Compensation Insurance Liabilities

12 Months Ended

Dec. 31, 2020

Accident and Workers' Compensation Insurance Liabilities [Abstract]

Accident and Workers' Compensation Insurance Liabilities

Auto Liability and Workers’ Compensation Insurance Accruals

We act as a self-insurer for auto liability, defined as including property damage, personal injury, or cargo based on defined insurance retention of $0.1 million under our Millis policy prior to April 1, 2020 and $1.0 million subsequent to April 1, 2020, or $2.0 million under our Heartland policy, for any individual claim based on the insured party, accident date, and circumstances of the loss event. Within the Heartland policy, there is an additional $1.0 million aggregate self-insurance corridor for claims between $2.0 million and $3.0 million. For both Heartland and Millis claims, liabilities in excess of these deductibles are covered by insurance up to $60.0 million including retention of 50% of exposure from $5.0 million to $10.0 million. We retain any liability in excess of $60.0 million. We act as a self-insurer for property damage to our tractors and trailers. Prior to April 1, 2020, Heartland and Millis claims in excess of insurance retention had different coverage features. For the Heartland policy, claims in excess of the deductible are covered up to $100.0 million. For the Millis policy, claims subsequent to August 26, 2019 and prior to April 1, 2020, we retain liability between $3.0 million and $10.0 million, while liabilities in excess of these amounts are covered by insurance up to $100.0 million. For both policies prior to April 1, 2020, we retain any liability in excess of $100.0 million.

We act as a self-insurer for workers’ compensation based on defined insurance retention of $1.0 million under our Heartland policy, which includes Millis, effective July 1, 2020. Millis had defined insurance retention of $0.5 million from August 26, 2019 through July 1, 2020. Liabilities in excess of insurance retention limits are covered by insurance. The State of Iowa initially required us to deposit $0.7 million into a trust fund as part of the self-insurance program. Earnings on this account become part of the required deposit and as of December 31, 2020 and 2019 total deposits in this account were $1.5 million. This deposit is in municipal bonds classified as held-to-maturity and is recorded in other non-current assets on the consolidated balance sheets. 

In addition, we have provided insurance carriers with letters of credit totaling approximately $13.0 million in connection with our liability and workers’ compensation insurance arrangements and self-insurance requirements of the Federal Motor Carrier Safety Administration.  There were no outstanding balances due on any letters of credit at December 31, 2020 or 2019.

Accident and workers’ compensation accruals include the estimated settlements, settlement expenses and an estimate for claims incurred but not yet reported for property damage, personal injury and public liability losses from vehicle accidents and cargo losses as well as workers’ compensation claims for amounts not covered by insurance. Accident and workers’ compensation accruals are based upon individual case estimates, including reserve development, and estimates of incurred-but-not-reported losses based upon our own historical experience and industry claim trends. Since the reported liability is an estimate, the ultimate liability may be more or less than reported. In addition to internally developed reserves and estimates, we utilize an actuarial specialist to provide an independent annual assessment of the internally developed accident and workers' compensation accruals. If adjustments to previously established accruals are required, such amounts are included in operating expenses in the current period. These accruals are recorded on an undiscounted basis. Estimated claim payments to be made within one year of the balance sheet date have been classified as insurance accruals within current liabilities as of December 31, 2020 and 2019.

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Income Taxes

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

Deferred tax assets and liabilities as of December 31 are as follows:

	2020		2019
Deferred income tax assets:	(in thousands)
Allowance for doubtful accounts	$	258	$	262
Accrued expenses	6,353		3,892
Stock-based compensation	126		178
Insurance accruals	14,283		15,054
State net operating loss carryforward	—		2,618
Federal net operating loss carryover and credits	—		8,793
Indirect tax benefits of unrecognized tax benefits	1,037		1,052
Other	221		3
Total gross deferred tax assets	22,278		31,852
Less valuation allowance	—		—
Net deferred tax assets	22,278		31,852
Deferred income tax liabilities:
Property and equipment	(98,355)		(101,843)
Goodwill and amortizable intangibles	(18,959)		(15,939)
Prepaid expenses	(804)		(1,762)
	(118,118)		(119,544)
Net deferred tax liability	$	(95,840)	$	(87,692)

The deferred tax amounts above have been classified in the accompanying consolidated balance sheets at December 31, 2020 and 2019 as follows:

	2020		2019
	(in thousands)
Noncurrent assets, net	$	8,164	$	6,006
Long-term liabilities, net	(104,004)		(93,698)
	$	(95,840)	$	(87,692)

We have not recorded a valuation allowance against any deferred tax assets at December 31, 2020 and 2019.  In management’s opinion, it is more likely than not that we will be able to utilize these deferred tax assets in future periods as a result of our history of profitability, taxable income, and reversal of deferred tax liabilities.

Income tax expense consists of the following:

	2020		2019		2018
	(in thousands)
Current income taxes:
Federal	$	10,835	$	14,122	$	11,985
State	4,472		5,698		4,498
	15,307		19,820		16,483
Deferred income taxes:
Federal	736		5,595		5,537
State	7,412		(1,204)		(2,780)
	8,148		4,391		2,757
Total	$	23,455	$	24,211	$	19,240

The income tax provision differs from the amount determined by applying the U.S. federal tax rate as follows:

	2020		2019		2018
	(in thousands)
Federal tax at statutory rate (21%, 21%, 21% respectively)	$	19,795	$	20,406	$	19,302
State taxes, net of federal benefit	5,678		3,561		2,200
Permanent differences to return	446		540		408
Return to provision adjustment	(2,615)		(392)		(1,327)
Uncertain income tax penalties and interest, net	(73)		289		(1,067)
Other	224		(193)		(276)
	$	23,455	$	24,211	$	19,240

At December 31, 2020 and December 31, 2019, we had a total of $4.9 million and $5.0 million in gross unrecognized tax benefits, respectively, included in long-term income taxes payable in the consolidated balance sheets. Of this amount, $3.9 million and $4.0 million represents the amount of unrecognized tax benefits that, if recognized, would impact our effective tax rate as of December 31, 2020 and December 31, 2019, respectively. Unrecognized tax benefits were a net decrease of $0.1 million and a net increase of $0.4 million during the years ended December 31, 2020 and 2019, respectively, due mainly to the expiration of certain statutes of limitation net of additions and settlements with respective states. This had the effect of decreasing the effective state tax rate in 2020 and increasing the effective state rate during 2019. The total net amount of accrued interest and penalties for such unrecognized tax benefits was $0.9 million and $0.9 million at December 31, 2020 and December 31, 2019, respectively, and is included in income taxes payable in the consolidated balance sheets. Net interest and penalties included in income tax expense for the years ended December 31, 2020, 2019 and 2018 was approximately $0.1 million, zero, and a benefit of $1.4 million, respectively. 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. Income tax expense was reduced during the years ended December 31, 2020, 2019 and 2018 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:

	2020		2019
	(in thousands)
Balance at January 1,	$	5,010	$	4,585
Additions based on tax positions related to current year	767		1,138
Additions for tax positions of prior years	—		124
Reductions for tax positions of prior years	(216)		—
Reductions due to lapse of applicable statute of limitations	(428)		(701)
Settlements	(196)		(136)
Balance at December 31,	$	4,937	$	5,010

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 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 2017 and forward. Tax years 2010 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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Stockholders' Equity

12 Months Ended

Dec. 31, 2020

Statement of Stockholders' Equity [Abstract]

Stockholders' Equity

Equity

We have a stock repurchase program with 5.4 million shares remaining authorized for repurchase as of December 31, 2020. There were 1.5 million shares repurchased in the open market during the year ended December 31, 2020, none in 2019, and 1.4 million in 2018. 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 years ended December 31, 2020, 2019 and 2018 our Board of Directors declared regular quarterly dividends totaling $6.5 million, $6.6 million, and $6.6 million for each year, respectively.  Future payment of cash dividends and the amount of such dividends will depend upon our financial conditions, our results of operations, our cash requirements, our 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

12 Months Ended

Dec. 31, 2020

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 “Plan”) was ratified. The Plan made available up to 0.9 million shares for the purpose of making restricted stock grants to our eligible officers and employees. The Plan has 0.1 million shares that remain available for the purpose of making restricted stock grants at December 31, 2020. Shares granted in 2017 through 2020 have various vesting terms that range from immediate to four years from the date of grant and have share prices ranging between $18.12 and $23.37. 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 $2.1 million, $2.1 million, and $0.5 million for the years ended December 31, 2020, 2019, and 2018, respectively. Unrecognized compensation expense was $0.7 million at December 31, 2020 which will be recognized over a weighted average period of 0.9 years.

The following table summarizes our restricted stock award activity for the years ended December 31, 2020, 2019 and 2018. The vesting dates for the awards vested in 2020 occurred relatively evenly throughout the year ended December 31, 2020. The fair value of awards vested during 2020, 2019 and 2018 was $2.3 million, $1.8 million and $0.8 million, respectively.

	2020
	Number of Restricted Stock Awards ( in thousands)	Weighted Average Grant Date Fair Value
Unvested at January 1	52.1	$	20.55
Granted	119.9	20.24
Vested	(111.8)	20.38
Forfeited	(0.5)	19.32
Outstanding (unvested) at end of year	59.7	$	20.29

	2019
	Number of Restricted Stock Awards ( in thousands)	Weighted Average Grant Date Fair Value
Unvested at January 1	26.5	$	21.31
Granted	114.0	19.88
Vested	(87.9)	19.93
Forfeited	(0.5)	17.11
Outstanding (unvested) at end of year	52.1	$	20.55

	2018
	Number of Restricted Stock Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested at beginning of year	53.7	$	21.82
Granted	10.0	18.58
Vested	(35.7)	21.48
Forfeited	(1.5)	17.11
Outstanding (unvested) at end of year	26.5	$	21.31

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Profit Sharing Plan and Retirement Plan	12 Months Ended
	Dec. 31, 2020
Profit Sharing Plan and Retirement Plan [Abstract]
Profit Sharing Plan and Retirement Plan	Profit Sharing Plan and Retirement PlanWe have retirement savings plans (the “Retirement Savings Plans”) for substantially all employees who have completed one year of service and are 19 years of age or older. Employees may make 401(k) contributions subject to Internal Revenue Code limitations. The Retirement Savings Plans provide for a discretionary profit sharing contribution to non-driver employees and a matching contribution of a discretionary percentage to driver employees ("Heartland Plan"). Following the acquisition of Millis Transfer on August 26, 2019 a retirement savings plan ("Millis Transfer Plan") was created. The Millis Transfer Plan has the aforementioned characteristics of the Heartland Plan, but is for Millis Transfer employees. Our contributions to the Retirement Savings Plans totaled approximately $2.3 million, $1.6 million, and $1.0 million, for the years ended December 31, 2020, 2019 and 2018, respectively.

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Commitments and Contingencies	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and ContingenciesWe 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 at December 31, 2020, was $121.9 million.

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Quarterly Financial Information (Unaudited)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information (Unaudited) [Abstract]

Quarterly Financial Information (Unaudited)

Quarterly Financial Information (Unaudited)

	First		Second		Third		Fourth
	(In Thousands, Except Per Share Data)
Year ended December 31, 2020
Operating revenue	$	166,318	$	160,873	$	162,282	$	155,789
Operating income	17,326		24,989		27,339		23,765
Income before income taxes	17,703		25,146		27,510		23,902
Net income	13,238		19,182		20,714		17,672
Net income per share, basic	0.16		0.24		0.25		0.22
Net income per share, diluted	0.16		0.24		0.25		0.22
Year ended December 31, 2019
Operating revenue	$	139,536	$	142,144	$	147,908	$	167,227
Operating income	20,843		29,030		26,739		17,663
Income before income taxes	21,988		30,259		27,415		17,516
Net income	17,318		22,361		20,501		12,787
Net income per share, basic	0.21		0.27		0.25		0.16
Net income per share, diluted	0.21		0.27		0.25		0.16

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Subsequent Events	12 Months Ended
	Dec. 31, 2020
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent EventsNo events occurred requiring disclosure other than the repurchase of 0.7 million shares of our common stock for $12.9 million subsequent to December 31, 2020.

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Schedule II Valuation of Qualifying Accounts and Reserves

12 Months Ended

Dec. 31, 2020

Schedule II Valuation and Qualifying Accounts and Reserves [Abstract]

SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS AND RESERVES (In Thousands, Except Per Share Data)
			Column C
Column A	Column B		Charges To				Column D		Column E
	Balance At		Cost						Balance
	Beginning		And		Other				At End
Description	of Period		Expense		Accounts		Deductions		of Period
Allowance for doubtful accounts:
Year ended December 31, 2020	$	1,100	$	—	$	—	$	—	$	1,100
Year ended December 31, 2019	900		200		—		—		1,100
Year ended December 31, 2018	1,475		—		—		575		900

See accompanying Report of Independent Registered Public Accounting Firm.

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Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2020

Significant Accounting Policies [Abstract]

Nature of Operations [Text Block]

Nature of Business

Heartland Express, Inc. is a holding company incorporated in Nevada, which owns all of the stock of Heartland Express, Inc. of Iowa, Heartland Express Services, Inc., Heartland Express Maintenance Services, Inc., Midwest Holding Group, LLC and Millis Transfer, LLC. On December 31, 2018, A & M Express, Inc. was merged into Heartland Express, Inc. of Iowa. On August 26, 2019, Heartland Express, Inc. of Iowa acquired Midwest Holding Group, Inc. and Millis Real Estate Leasing, LLC (together, "Millis Transfer"), a truckload carrier headquartered in Black River Falls, Wisconsin. Effective December 31, 2019, Millis Transfer, Inc. and Midwest Holding Group, Inc. were converted to Millis Transfer, LLC and Midwest Holding Group, LLC, respectively. Further, effective December 31, 2019, Millis Real Estate Leasing, LLC, Rivera Real Estate, LLC, and Great River Leasing, LLC were merged into Millis Transfer, LLC. We, together with our subsidiaries, are a short-to-medium haul truckload carrier (predominately 500 miles or less per load). We primarily provide nationwide asset-based dry van truckload service for major shippers from Washington to Florida and New England to California.

Consolidation, Policy [Policy Text Block]

Principles of Consolidation

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.

Use of Estimates, Policy [Policy Text Block]

Use of Estimates

The preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period.  Actual results could differ from those estimates.

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 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.

Cash and Cash Equivalents, Policy [Policy Text Block]

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 December 31, 2020 and 2019, restricted and designated cash and investments totaled $17.3 million and $19.4 million, respectively. At December 31, 2020, $1.1 million was included in other current assets and $16.2 million was included in other non-current assets in the consolidated balance sheets. At December 31, 2019, $1.6 million was included in other current assets and $17.8 million was included in other non-current assets in the consolidated balance sheets.  The restricted and designated funds represent deposits required by state agencies for self-insurance purposes and funds that are earmarked for a specific purpose and not for general business use.

Marketable Securities, Policy [Policy Text Block]

InvestmentsMunicipal bonds of $1.5 million at December 31, 2020 and 2019, are stated at amortized cost, are classified as held-to-maturity and are included in restricted cash in other non-current assets.  Investment income received on held-to-maturity municipal bond investments is generally exempt from federal income taxes and is recognized as earned.

Trade and Other Accounts Receivable, Policy [Policy Text Block]

Trade Receivables and Allowance for Doubtful Accounts

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 based on the credit terms for customer accounts which are generally on a net 30 day basis or less.   We use our write off history and our knowledge of uncollectible accounts in estimating the allowance for bad debts.  We review the adequacy of our allowance for doubtful accounts on a monthly basis.  We are aggressive in our collection efforts resulting in a low number of write-offs annually.  Conditions that would lead an account to be considered uncollectible include customers filing bankruptcy and the exhaustion of all practical collection efforts.  We will use the necessary legal recourse to recover as much of the receivable as is practical under the law.  Allowance for doubtful accounts was $1.1 million and $1.1 million at December 31, 2020 and 2019, respectively.

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

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.  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 expense of $0.4 million and $0.7 million for the years ended December 31, 2020 and 2019, respectively, has been included in communications and utilities in the consolidated statements of comprehensive income. Depreciation for financial statement purposes is computed by the straight-line method for all assets other than new tractors.  We recognize depreciation expense on new tractors (excluded tractors acquired through acquisition) at 125% declining balance method. New tractors are depreciated to salvage values of $15,000, while new trailers are depreciated to salvage values of $4,000. 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.

Lives of the assets are as follows:
	Years
Land improvements and buildings	5-30
Leasehold improvements	5-25
Furniture and fixtures	3-5
Shop and service equipment	3-10
Revenue equipment	5-7

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

Impairment of Long-Lived Assets

We periodically evaluate property and equipment and amortizable intangible assets for impairment upon the occurrence of events or changes in circumstances that indicate the carrying amount of assets may not be recoverable. Recoverability of assets to be held and used is evaluated by a comparison of the carrying amount of an asset group to future net undiscounted cash flows expected to be generated by the group. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount over which the carrying amount of the assets exceeds the fair value of the assets.  There were no impairment charges recognized during the years ended December 31, 2020, 2019, and 2018.

Fair Value of Financial Instruments, Policy [Policy Text Block]

Fair Value of Financial InstrumentsThe fair values of cash and cash equivalents, trade receivables, held-to-maturity investments and accounts payable, which are recorded at cost, approximate fair value based on the short-term nature and high credit quality of these financial instruments.

Advertising Cost, Policy, Expensed Advertising Cost [Policy Text Block]

Advertising Costs

We expense all advertising costs as incurred.  Advertising costs are included in other operating expenses in the consolidated statements of comprehensive income. Advertising expense was $1.8 million, $1.9 million, and $1.8 million for the years ended December 31, 2020, 2019, and 2018, respectively.

Goodwill and Intangible Assets, Policy [Policy Text Block]

GoodwillGoodwill is not subject to amortization and is tested for impairment annually and whenever events or changes in circumstances indicate that impairment may have occurred. The Company performs its annual impairment test as of September 30. The Company first assesses qualitative factors to determine whether it is more likely than not (that is, a likelihood of more than 50%) that the fair value of our reporting unit is less than its carrying amount, including goodwill. If, after assessing qualitative factors, the Company determines that it is more likely than not that the fair value of our reporting unit is less than its carrying amount, then the Company performs a full fair value assessment of identifiable net assets to identify potential goodwill impairment and measure the amount of goodwill impairment loss to be recognized, if any. As of September 30, 2020, the Company’s assessment of qualitative factors informed its conclusion that a goodwill impairment did not occur. The significant qualitative factors considered include an increase in the Company’s revenue and continued strong cash flow. Our reporting unit had fair value significantly in excess of its carrying value. Management determined that no impairment charge was required for the years ended December 31, 2020, 2019, and 2018.

Intangible Assets, Finite-Lived, Policy [Policy Text Block]

Other Intangibles, Net

Other intangibles, net consists of a tradename, covenants not to compete, and customer relationships. 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. We periodically evaluate amortizable intangible assets for impairment upon occurrence of events or changes in circumstances that indicate the carrying amount of intangible assets may not be recoverable. Management determined that no intangible impairment charge was required for the years ended December 31, 2020, 2019, and 2018. See Note 5 for additional information regarding intangible assets.

Self-insurance Policy Text Block [Policy Text Block]

Insurance Accruals

We are self-insured for auto liability, cargo loss and damage, bodily injury and property damage ("BI/PD"), and workers’ compensation. Insurance accruals reflect the estimated cost of claims, including estimated loss and loss adjustment expenses incurred but not reported, and not covered by insurance.  Accident and workers’ compensation accruals are based upon individual case estimates, including reserve development, and estimates of incurred-but-not-reported losses based upon our own historical experience and industry claim trends. Insurance accruals are not discounted. In addition to internally developed reserves and estimates, we utilize an actuarial specialist to provide an independent annual assessment of the internally developed accident and workers' compensation accruals. The cost of cargo and BI/PD insurance and claims are included in insurance and claims expense, while the costs of workers’ compensation insurance and claims are included in salaries, wages, and benefits in the consolidated statements of comprehensive income. Insurance accruals are presented as either current or non-current in the consolidated balance sheets based on our expectation of when payment will occur.

Health insurance accruals reflect the estimated cost of health related claims, including estimated expenses incurred but not reported.  The cost of health insurance and claims are included in salaries, wages and benefits in the consolidated statements of comprehensive income.  Health insurance accruals of $4.5 million and $6.0 million are included in other accruals in the consolidated balance sheets as of December 31, 2020 and 2019, respectively.

Revenue Recognition, Policy [Policy Text Block]

Revenue and Expense 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 $1.1 million and $1.2 million as of December 31, 2020 and 2019, 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 December 31, 2020 and 2019.

Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]

Stock-Based Compensation

We have a stock-based compensation plan that provides for the grants of restricted stock awards to our employees. We account for restricted stock awards using the fair value method of accounting for stock-based compensation. Issuances of stock upon vesting of restricted stock are made from treasury stock. Compensation expense for restricted stock grants is recognized over the requisite service period of each award and is included in salaries, wages and benefits in the consolidated statements of comprehensive income. Total compensation of $13.6 million related to all awards granted under the program has been amortized over the requisite service period for each separate vesting period as if the award is, in substance, multiple awards between 2011 and 2023.

Earnings Per Share, Policy [Policy Text Block]

Earnings per ShareBasic earnings per share are 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 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 statements 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 the temporary differences reverse.  The effect of a change in tax rates on deferred taxes is recognized in the period that the change is enacted.  We have not recorded a valuation allowance against any deferred tax assets at December 31, 2020 and 2019. In

management’s opinion, it is more likely than not that we will be able to utilize these deferred tax assets in future periods as a result of our history of profitability, taxable income, and reversal of deferred tax liabilities.

Pursuant to the authoritative accounting guidance on income taxes, when establishing a valuation allowance, we consider future sources of taxable income such as “future reversals of existing taxable temporary differences and carry-forwards” and “tax planning strategies”.  In the event we determine that the deferred tax assets will not be realized in the future, the valuation adjustment to the deferred tax assets is charged to earnings or accumulated other comprehensive loss based on the nature of the asset giving rise to the deferred tax asset and the facts and circumstances resulting in that conclusion.

We calculate our current and deferred tax provision based on estimates and assumptions that could differ from the actual results reflected in income tax returns filed in subsequent years.  Adjustments based on filed returns are recorded when identified.

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.

New Accounting Pronouncements, Policy [Policy Text Block]

New Accounting Pronouncements

In June 2016, the FASB issued ASU 2016-13, "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments". This update requires measurement and recognition of expected versus incurred credit losses for financial assets held. ASU 2016-13 is effective for annual periods beginning after December 15, 2019, and interim periods therein. We have adopted this standard effective January 1, 2020 and the impact of adoption of the standard did not have a material impact on our financial statements.

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; however, early adoption is permitted. We have adopted this standard effective January 1, 2021 and the impact of adoption of the standard did not have a material impact on our financial statements.

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Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Significant Accounting Policies [Abstract]

Property, Plant and Equipment [Table Text Block]

Lives of the assets are as follows:
	Years
Land improvements and buildings	5-30
Leasehold improvements	5-25
Furniture and fixtures	3-5
Shop and service equipment	3-10
Revenue equipment	5-7

Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]

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 2020, 2019, and 2018 is as follows (in thousands, except per share data):

	2020
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	70,806	81,388	$	0.87
Effect of restricted stock	—		56
Diluted EPS	$	70,806	81,444	$	0.87

	2019
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	72,967	81,980	$	0.89
Effect of restricted stock	—		44
Diluted EPS	$	72,967	82,024	$	0.89

	2018
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	72,677	82,378	$	0.88
Effect of restricted stock	—		32
Diluted EPS	$	72,677	82,410	$	0.88

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Acquisition of Millis Transfer (Tables)

12 Months Ended

Dec. 31, 2020

Business Combinations [Abstract]

Business Acquisition, Pro Forma Information [Text Block]

	Year ended	Year ended
	December 31, 2019	December 31, 2018
	(in thousands)
Operating revenue	$694,672	$760,917
Net income	$75,951	$76,259

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

MILLIS TRANSFER ACQUISITION DATE FAIR MARKET VALUES	(in thousands)
Trade and other accounts receivable	$	14,474
Other current assets	1,656
Property and equipment	117,060
Other non-current assets	802
Intangible assets	15,300
Goodwill	35,885
Total assets	185,177
Accounts payable, accrued expenses, and current portion of long-term debt	(31,737)
Insurance accruals	(4,371)
Long-term debt	(70,191)
Deferred taxes	(16,201)
Total cash paid and common stock issued	$	62,677

Schedule of Business Acquisitions, by Acquisition [Table Text Block]

MILLIS TRANSFER TOTAL PURCHASE PRICE CONSIDERATION	(in thousands)
Cash paid pursuant to Stock Purchase Agreement	$	61,927
Common stock issued pursuant to the Acquisition and Merger Agreement	750
Total cash paid and common stock issued	$	62,677

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Intangible Assets and Goodwill (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

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

	2020
	Amortization period (years)	Gross Amount		Accumulated Amortization		Net intangible assets
		(in thousands)
Customer relationships	15-20	$	23,000	$	4,531	$	18,469
Tradename	0.5-10	12,900		8,740		4,160
Covenants not to compete	1-10	5,300		3,183		2,117
		$	41,200	$	16,454	$	24,746

	2019
	Amortization period (years)	Gross Amount		Accumulated Amortization		Net intangible assets
		(in thousands)
Customer relationships	15-20	$	23,000	$	3,221	$	19,779
Tradename	0.5-10	12,900		8,260		4,640
Covenants not to compete	1-10	5,300		2,583		2,717
		$	41,200	$	14,064	$	27,136

Schedule of Goodwill [Table Text Block]

Changes in carrying amount of goodwill during the twelve months ended December 31, 2020 and December 31, 2019 were as follows:

	(in thousands)
Balance at December 31, 2018	$	132,410
Acquisition	35,885
Balance at December 31, 2019	$	168,295
Acquisition	—
Balance at December 31, 2020	$	168,295

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

Deferred tax assets and liabilities as of December 31 are as follows:

	2020		2019
Deferred income tax assets:	(in thousands)
Allowance for doubtful accounts	$	258	$	262
Accrued expenses	6,353		3,892
Stock-based compensation	126		178
Insurance accruals	14,283		15,054
State net operating loss carryforward	—		2,618
Federal net operating loss carryover and credits	—		8,793
Indirect tax benefits of unrecognized tax benefits	1,037		1,052
Other	221		3
Total gross deferred tax assets	22,278		31,852
Less valuation allowance	—		—
Net deferred tax assets	22,278		31,852
Deferred income tax liabilities:
Property and equipment	(98,355)		(101,843)
Goodwill and amortizable intangibles	(18,959)		(15,939)
Prepaid expenses	(804)		(1,762)
	(118,118)		(119,544)
Net deferred tax liability	$	(95,840)	$	(87,692)

The deferred tax amounts above have been classified in the accompanying consolidated balance sheets at December 31, 2020 and 2019 as follows:

	2020		2019
	(in thousands)
Noncurrent assets, net	$	8,164	$	6,006
Long-term liabilities, net	(104,004)		(93,698)
	$	(95,840)	$	(87,692)

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

Income tax expense consists of the following:

	2020		2019		2018
	(in thousands)
Current income taxes:
Federal	$	10,835	$	14,122	$	11,985
State	4,472		5,698		4,498
	15,307		19,820		16,483
Deferred income taxes:
Federal	736		5,595		5,537
State	7,412		(1,204)		(2,780)
	8,148		4,391		2,757
Total	$	23,455	$	24,211	$	19,240

The income tax provision differs from the amount determined by applying the U.S. federal tax rate as follows:

	2020		2019		2018
	(in thousands)
Federal tax at statutory rate (21%, 21%, 21% respectively)	$	19,795	$	20,406	$	19,302
State taxes, net of federal benefit	5,678		3,561		2,200
Permanent differences to return	446		540		408
Return to provision adjustment	(2,615)		(392)		(1,327)
Uncertain income tax penalties and interest, net	(73)		289		(1,067)
Other	224		(193)		(276)
	$	23,455	$	24,211	$	19,240

Reconciliation of Unrecognized Tax Benefits [Table Text Block]

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

	2020		2019
	(in thousands)
Balance at January 1,	$	5,010	$	4,585
Additions based on tax positions related to current year	767		1,138
Additions for tax positions of prior years	—		124
Reductions for tax positions of prior years	(216)		—
Reductions due to lapse of applicable statute of limitations	(428)		(701)
Settlements	(196)		(136)
Balance at December 31,	$	4,937	$	5,010

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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2020

Stock-Based Compensation [Abstract]

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

The following table summarizes our restricted stock award activity for the years ended December 31, 2020, 2019 and 2018. The vesting dates for the awards vested in 2020 occurred relatively evenly throughout the year ended December 31, 2020. The fair value of awards vested during 2020, 2019 and 2018 was $2.3 million, $1.8 million and $0.8 million, respectively.

	2020
	Number of Restricted Stock Awards ( in thousands)	Weighted Average Grant Date Fair Value
Unvested at January 1	52.1	$	20.55
Granted	119.9	20.24
Vested	(111.8)	20.38
Forfeited	(0.5)	19.32
Outstanding (unvested) at end of year	59.7	$	20.29

	2019
	Number of Restricted Stock Awards ( in thousands)	Weighted Average Grant Date Fair Value
Unvested at January 1	26.5	$	21.31
Granted	114.0	19.88
Vested	(87.9)	19.93
Forfeited	(0.5)	17.11
Outstanding (unvested) at end of year	52.1	$	20.55

	2018
	Number of Restricted Stock Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested at beginning of year	53.7	$	21.82
Granted	10.0	18.58
Vested	(35.7)	21.48
Forfeited	(1.5)	17.11
Outstanding (unvested) at end of year	26.5	$	21.31

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Quarterly Financial Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information (Unaudited) [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

	First		Second		Third		Fourth
	(In Thousands, Except Per Share Data)
Year ended December 31, 2020
Operating revenue	$	166,318	$	160,873	$	162,282	$	155,789
Operating income	17,326		24,989		27,339		23,765
Income before income taxes	17,703		25,146		27,510		23,902
Net income	13,238		19,182		20,714		17,672
Net income per share, basic	0.16		0.24		0.25		0.22
Net income per share, diluted	0.16		0.24		0.25		0.22
Year ended December 31, 2019
Operating revenue	$	139,536	$	142,144	$	147,908	$	167,227
Operating income	20,843		29,030		26,739		17,663
Income before income taxes	21,988		30,259		27,415		17,516
Net income	17,318		22,361		20,501		12,787
Net income per share, basic	0.21		0.27		0.25		0.16
Net income per share, diluted	0.21		0.27		0.25		0.16

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Significant Accounting Policies Segment Information (Details)	12 Months Ended
	Dec. 31, 2020 segments
Significant Accounting Policies [Abstract]
Number of Reportable Segments	1

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Significant Accounting Policies Cash and Cash Equivalents (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Significant Accounting Policies [Abstract]
Restricted Cash and Cash Equivalents	$ 17.3	$ 19.4
Restricted Cash and Cash Equivalents, Current	1.1	1.6
Restricted Cash and Cash Equivalents, Noncurrent	$ 16.2	$ 17.8

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Significant Accounting Policies Investments (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Significant Accounting Policies [Abstract]
Debt Securities, Held-to-maturity	$ 1.5	$ 1.5

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Significant Accounting Policies Trade Receivables and Allowance for Doubtful Accounts (Details) $ in Millions	Dec. 31, 2020 USD ($) d	Dec. 31, 2019 USD ($)
Significant Accounting Policies [Abstract]
Customer credit terms (in days) | d	30
Allowance for Doubtful Accounts Receivable, Current | $	$ 1.1	$ 1.1

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Significant Accounting Policies Property, Equipment and Depreciation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment
Amortization Period of Tires	two years
Communications and Utilities Expense [Member]
Property, Plant and Equipment
Depreciation	$ 400,000	$ 700,000
Tractors [Member]
Property, Plant and Equipment
Property, Plant, and Equipment, Salvage Value	15,000
Trailers [Member]
Property, Plant and Equipment
Property, Plant, and Equipment, Salvage Value	$ 4,000
Minimum [Member] | Land Improvements and Buildings [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	5 years
Minimum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	5 years
Minimum [Member] | Furniture and Fixtures [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	3 years
Minimum [Member] | Shop and Service Equipment [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	3 years
Minimum [Member] | Revenue Equipment [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	5 years
Maximum [Member] | Land Improvements and Buildings [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	30 years
Maximum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	25 years
Maximum [Member] | Furniture and Fixtures [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	5 years
Maximum [Member] | Shop and Service Equipment [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	10 years
Maximum [Member] | Revenue Equipment [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	7 years

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Significant Accounting Policies Impairment of Long-Lived Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Significant Accounting Policies [Abstract]
Asset Impairment Charges	$ 0.0	$ 0.0	$ 0.0

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Significant Accounting Policies Advertising Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Significant Accounting Policies [Abstract]
Advertising Expense	$ 1.8	$ 1.9	$ 1.8

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Significant Accounting Policies Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Asset Impairment Charges [Abstract]
Impairment of Intangible Assets (Excluding Goodwill)	$ 0	$ 0	$ 0
Goodwill, Impairment Loss	$ 0	$ 0	$ 0

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Significant Accounting Policies Self-Insurance Accruals (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Significant Accounting Policies [Abstract]
Health insurance reserves	$ 4.5	$ 6.0

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Significant Accounting Policies Revenue and Expense Recognition (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Contract with Customer, Asset, Net [Abstract]
Contract with Customer, Asset, Net	$ 1,100	$ 1,200

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Significant Accounting Policies Stock-based compensation (Details) - USD ($) $ in Thousands	12 Months Ended			143 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Nov. 15, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based Compensation	$ 2,100	$ 2,100	$ 500
Scenario, Forecast [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based Compensation				$ 13,600

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Significant Accounting Policies Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Significant Accounting Policies [Abstract]
Net Income Loss	$ 70,806	$ 72,967	$ 72,677
Weighted Average Number of Shares Outstanding, Basic	81,388	81,980	82,378
Basic EPS	$ 0.87	$ 0.89	$ 0.88
Dilutive Securities, Effect on Basic Earnings Per Share, Including Options and Restrictive Stock Units	$ 0	$ 0	$ 0
Incremental Common Shares Attributable to Share-based Payment Arrangements	56	44	32
Net Income (Loss) Available to Common Stockholders, Diluted	$ 70,806	$ 72,967	$ 72,677
Weighted Average Number of Shares Outstanding, Diluted	81,444	82,024	82,410
Diluted EPS	$ 0.87	$ 0.89	$ 0.88

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Significant Accounting Policies Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Significant Accounting Policies [Abstract]
PortionOfTaxBenefitRecordedPositionsMoreLikelyThanNotToBeSustained	50.00%
Valuation Allowance Against Any Deferred Tax Asset	$ 0	$ 0

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Concentrations of Credit Risk and Major Customers (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 Customer	Dec. 31, 2019 USD ($) Customer	Dec. 31, 2018
Concentration Risk
Concentration of risk, number of customers	5
Concentration Risk, Percentage	34.00%	36.00%	37.00%
Sales Revenue and Services, Net [Member] | Customer Concentration Risk [Member]
Concentration Risk
Concentration of risk, number of customers	0	1
Concentration Risk, Percentage		10.90%	12.50%
Baseline percentage for customer concentration of risk	10.00%	10.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Concentration Risk
Accounts receivable | $		$ 5.8
Concentration Risk, Percentage	30.00%	30.00%

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Revenue Recognition (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Contract with Customer, Asset, Net [Abstract]
Contract with Customer, Asset, Net	$ 1,100	$ 1,200
Operating Revenues	645,300	596,800	$ 610,800
Fuel surcharge revenue	61,700	75,000	85,300
Accessorial and other revenues	14,300	13,500	$ 14,900
Deposit Contracts, Liabilities	$ 0	$ 0

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Acquisition of Millis Transfer (Details) - USD ($) $ in Thousands		12 Months Ended
	Aug. 26, 2019	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs		$ 500
Accounts and Other Receivables, Net, Current	$ 14,474
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other	1,656
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	117,060
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	802
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	15,300
Business Combination, Recognized Identifiable Assets Acquired, Goodwill	35,885
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	185,177
Self Insurance Reserve	4,371
Payments to Acquire Businesses, Net of Cash Acquired	61,927
Accounts Payable and Accrued Liabilities	31,737
Long-term Debt	70,191
Business Combination, Total Consideration	156,000
Business Combination, Cash and Equity Transferred	62,677
Noncash or Part Noncash Acquisition, Debt Assumed	93,300
Acquired Business Percent of Assets		21.10%
Acquired Business Percent of Revenue		8.80%
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	750
Deferred Taxes	$ 16,201
Debt, Long-term and Short-term, Combined Amount		$ 0
Business Combination, Pro Forma Information, Net Income Change		3,000	$ 3,600
Business Acquisition, Pro Forma Revenue		694,672	760,917
Business Acquisition, Pro Forma Net Income (Loss)		$ 75,951	$ 76,259

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Intangible Assets and Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 0
Goodwill	168,295	$ 168,295	$ 132,410
Goodwill, Acquired During Period	0	35,885
Finite-Lived Intangible Assets, Amortization Expense	2,400	2,700	$ 2,500
Finite-Lived Intangible Assets, Gross	41,200	41,200
Finite-Lived Intangible Assets, Accumulated Amortization	16,454	14,064
Finite-Lived Intangible Assets, Net	24,746	27,136
Finite-Lived Intangible Assets, Amortization Expense, Next Rolling Twelve Months	2,400
Finite-Lived Intangible Assets, Amortization Expense, Year Two	2,300
Finite-Lived Intangible Assets, Amortization Expense, Year Three	2,200
Finite-Lived Intangible Assets, Amortization Expense, Year Four	1,900
Finite-Lived Intangible Assets, Amortization Expense, Year Five	1,900
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	23,000	23,000
Finite-Lived Intangible Assets, Accumulated Amortization	4,531	3,221
Finite-Lived Intangible Assets, Net	18,469	19,779
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	12,900	12,900
Finite-Lived Intangible Assets, Accumulated Amortization	8,740	8,260
Finite-Lived Intangible Assets, Net	4,160	4,640
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	5,300	5,300
Finite-Lived Intangible Assets, Accumulated Amortization	3,183	2,583
Finite-Lived Intangible Assets, Net	$ 2,117	$ 2,717
Minimum [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years	15 years
Minimum [Member] | Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	6 months	6 months
Minimum [Member] | Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	1 year	1 year
Maximum [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	20 years	20 years
Maximum [Member] | Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years	10 years
Maximum [Member] | Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years	10 years

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Long-Term Debt (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Aug. 31, 2018	Nov. 01, 2016	Nov. 11, 2013
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			$ 100,000,000.0	$ 175,000,000.0	$ 250,000,000.0
Allowable Amount for Issuance of Letters of Credit	$ 30,000,000.0				$ 20,000,000.0
Debt Instrument, Covenant, Leverage Ratio	2
Debt Covenant, Minimum Net Income Requirement	$ 1.00
Debt Instrument, Covenant minimum tangible net worth	250,000,000.0
Long-term Line of Credit	0	$ 0
Letters of Credit Outstanding on a Line of Credit, Amount Outstanding	11,500,000	11,300,000
Line of Credit Facility, Remaining Borrowing Capacity	$ 88,500,000	$ 88,700,000
Prime Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.00%
Accordion Feature [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 100,000,000.0
Maximum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage	0.175%
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.90%
Minimum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage	0.0725%
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.70%

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Accident and Workers' Compensation Insurance Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Accident and Workers' Compensation Insurance Liabilities [Line Items]
Excess Insurance Coverage Limit	$ 60.0	$ 100.0
Trust fund requirements	0.7
Debt Securities, Held-to-maturity	1.5	1.5
Letters of Credit Outstanding, Amount	13.0
Letter of credit due	0.0	0.0
Excess Insurance Coverage Minimum Claims		3.0
Excess Insurance Coverage Maximum Claims		10.0
Aggregate Self-Insurance Corridor	1.0
Aggregate Self-Insurance Corridor Claims Minimum [Member]	2.0
Aggregate Self-Insurance Corridor Claims Maximum [Member]	3.0
Auto Liability 50% Exposure Minimum [Member]	5.0
Auto Liability 50% Exposure Maximum [Member]	10.0
Auto liability retention limit minimum [Member]
Accident and Workers' Compensation Insurance Liabilities [Line Items]
Auto liability retention limit	1.0	0.1
Auto liability retention limit maximum [Member] [Member]
Accident and Workers' Compensation Insurance Liabilities [Line Items]
Auto liability retention limit	2.0	2.0
workers compensation retention limit minimum [Member]
Accident and Workers' Compensation Insurance Liabilities [Line Items]
Workers compensation retention limit	1.0	0.5
workers compensation retention limit maximum [Member]
Accident and Workers' Compensation Insurance Liabilities [Line Items]
Workers compensation retention limit	$ 1.0	$ 1.0

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Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	21.00%
Income Tax Uncertainties [Abstract]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 3,900	$ 4,000
Unrecognized Tax Benefits, Period Increase (Decrease)	(100)	400
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	900	900
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	100	0	$ (1,400)
Decrease in Unrecognized Tax Benefits is Reasonably Possible	0
Increase in Unrecognized Tax Benefits is Reasonably Possible	1,000
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance beginning of period	5,010	4,585
Additions based on tax positions related to current year	767	1,138
Additions for tax positions of prior years	0	124
Reductions for tax positions of prior years	(216)	0
Reductions due to lapse of applicable statute of limitations	(428)	(701)
Settlements	(196)	(136)
Balance end of period	4,937	5,010	$ 4,585
Valuation Allowance [Abstract]
Valuation Allowance, Amount	$ 0	$ 0

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Income Taxes Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Abstract]
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate	$ 19,795	$ 20,406	$ 19,302
Income Tax Reconciliation, State and Local Income Taxes	5,678	3,561	2,200
Income Tax Reconciliation, Permanent differences to return	446	540	408
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount	(2,615)	(392)	(1,327)
Income Tax Reconciliation, Tax Contingencies	(73)	289	(1,067)
Income Tax Reconciliation, Other Adjustments	224	(193)	(276)
Income Tax Expense (Benefit)	$ 23,455	$ 24,211	$ 19,240

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Income Taxes Income Tax Expense Detail (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Abstract]
Current Federal Tax Expense (Benefit)	$ 10,835	$ 14,122	$ 11,985
Current State and Local Tax Expense (Benefit)	4,472	5,698	4,498
Current Income Tax Expense (Benefit)	15,307	19,820	16,483
Deferred Federal Income Tax Expense (Benefit)	736	5,595	5,537
Deferred State and Local Income Tax Expense (Benefit)	7,412	(1,204)	(2,780)
Deferred Income Tax Expense (Benefit)	8,148	4,391	2,757
Income Tax Expense (Benefit)	$ 23,455	$ 24,211	$ 19,240

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Income Taxes Deferred Tax Summary (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [Abstract]
Deferred Income Taxes and Other Assets, Noncurrent	$ 8,164	$ 6,006
Deferred Tax Liabilities, Net, Noncurrent	(104,004)	(93,698)
Deferred Tax Liabilities, Net	$ (95,840)	$ (87,692)

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Income Taxes Deferred tax assets and liabilties (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [Abstract]
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	$ 258	$ 262
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities	6,353	3,892
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	126	178
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Self Insurance	14,283	15,054
Deferred Tax Assets Operating Loss Carryforwards - State	0	2,618
Deferred Tax Assets Operating Loss Carryforwards - Federal	0	8,793
Unrecognized tax benefit	1,037	1,052
Deferred Tax Assets, Other	221	3
Deferred Tax Assets, Gross	22,278	31,852
Deferred Tax Assets, Valuation Allowance	0	0
Deferred Tax Assets, Net	22,278	31,852
Deferred Tax Liabilities, Property, Plant and Equipment	(98,355)	(101,843)
Deferred Tax Liabilities, Goodwill and Intangible Assets	(18,959)	(15,939)
Deferred Tax Liabilities, Prepaid Expenses	(804)	(1,762)
Deferred Income Tax Liabilities	(118,118)	(119,544)
Deferred Tax Liabilities, Net	$ (95,840)	$ (87,692)

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Stockholders' Equity (Details) - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share Repurchases [Abstract]
Stock Repurchase Shares Authorized	5,400
Treasury Stock, Shares, Acquired	1,500	0	1,400
Payments of Dividends	$ 6.5	$ 6.6	$ 6.6

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Stock-Based Compensation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jul. 11, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	119,900	114,000.0	10,000.0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 2,300,000	$ 1,800,000	$ 800,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 19.32	$ 17.11	$ 17.11
Vesting Terms Range Minimum (in years)	0
Vesting Terms Range Maximum (in years)	4
Vesting Share Price Range Minimum	$ 18.12
Vesting Share Price Range Maximum	23.37
Stock-based Compensation	$ 2,100,000	$ 2,100,000	$ 500,000
Restricted Stock Shares Authorized				900,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	100,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 700,000
Share-based Compensation Arrangement by Share-based Payment Award, Grants in Period, Weighted Average Exercise Price, Beginning of Year	$ 20.55	$ 21.31	$ 21.82
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)	52,150	26,500	53,700
Unvested at end of year, Number of Restricted Stock Awards (in shares)	59,700	52,150	26,500
Share-based Compensation Arrangement by Share-based Payment Award, Grants in Period, Weighted Average Exercise Price, End of Year	$ 20.29	$ 20.55	$ 21.31
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 20.24	$ 19.88	$ 18.58
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	(111,800)	(87,900)	(35,700)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	$ 20.38	$ 19.93	$ 21.48
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	(500)	(500)	(1,500)
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition (in years)	10 months 24 days

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Profit Sharing Plan and Retirement Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Profit Sharing Plan and Retirement Plan [Abstract]
Defined Contribution Plan, Cost	$ 2.3	$ 1.6	$ 1.0

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Commitments and Contingencies (Details) $ in Millions	Dec. 31, 2020 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Unrecorded Unconditional Purchase Obligation	$ 121.9

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Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information (Unaudited) [Abstract]
OPERATING REVENUE	$ 155,789	$ 162,282	$ 160,873	$ 166,318	$ 167,227	$ 147,908	$ 142,144	$ 139,536	$ 645,262	$ 596,815	$ 610,803
Operating Income (Loss)	23,765	27,339	24,989	17,326	17,663	26,739	29,030	20,843	93,419	94,275	89,787
Income before income taxes	23,902	27,510	25,146	17,703	17,516	27,415	30,259	21,988	94,261	97,178	91,917
Net income	$ 17,672	$ 20,714	$ 19,182	$ 13,238	$ 12,787	$ 20,501	$ 22,361	$ 17,318	$ 70,806	$ 72,967	$ 72,677
Earnings Per Share Basic	$ 0.22	$ 0.25	$ 0.24	$ 0.16	$ 0.16	$ 0.25	$ 0.27	$ 0.21	$ 0.87	$ 0.89	$ 0.88
Earnings Per Share Diluted	$ 0.22	$ 0.25	$ 0.24	$ 0.16	$ 0.16	$ 0.25	$ 0.27	$ 0.21	$ 0.87	$ 0.89	$ 0.88

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Subsequent Events (Details) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) shares
Subsequent Event [Line Items]
Repurchase of Common Stock, Shares | shares	700
Payments For Repurchase Of Common Stock | $	$ 12,900

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Schedule II Valuation of Qualifying Accounts and Reserves (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation Allowances and Reserves, Balance Beginning of Period	$ 1,100	$ 900	$ 1,475
Valuation Allowances and Reserves, Charged to Cost and Expense	0	200	0
Valuation Allowances and Reserves, Charged to Other Accounts	0	0	0
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction	0	0	575
Valuation Allowances and Reserves, Balance End of Period	$ 1,100	$ 1,100	$ 900