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Significant Accounting Policies (Policies) | 12 Months Ended
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Dec. 31, 2019
Accounting Policies [Abstract] |
Segment Reporting, Policy [Policy Text Block] | Segment Realignment In 2019, we made a number of changes to our organizational structure. These changes impacted the company’s reportable operating segments but did not impact the company’s Consolidated Financial Statements. Under this revised reporting structure, we have four reportable operating segments, which include:
● | Non-dedicated truckload services ("Highway Services"), which consists of two truckload service offerings that are aggregated because they have similar economic characteristics and meet the aggregation criteria. The two truckload service offerings include: (i) expedited and (ii) over-the-road (“OTR”).
● | Dedicated contract truckload services (“Dedicated”), which consists of our truckload business that involves longer-term contracts that allocate a specified number of tractors and trailers to a specific customer, with fixed and variable compensation.
● | Freight brokerage, transportation management services ("TMS"), and warehousing services (“Managed Freight”), which consists of three service offerings that are aggregated because they have similar economic characteristics and meet the aggregation criteria. The three service offerings that comprise our Managed Freight segment are as follows: (i) Freight brokerage (“Brokerage”); (ii) TMS, (iii) and Warehousing (“Warehousing”).
● | Accounts receivable factoring services (“Factoring”), which assists current and potential capacity providers with improving their cash flows through secured invoice factoring services.
The following table summarizes our revenue by our four reportable operating segment, disaggregated to the service offering level, as used by our chief operating decision maker in making decisions regarding allocation of resources, etc., organized first by reporting operating segment and then by service offering for the years ended December 31, 2019, 2018, and 2017:
|  | Year ended |
|  | December 31, |
(in thousands) |  | 2019 |  |  | 2018 |  |  | 2017 |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |
Highway Services: |  |  |  |  |  |  |  |  |  |  |  |
Expedited |  | $ | 262,764 |  |  | $ | 317,244 |  |  | $ | 314,579 |
OTR |  |  | 93,757 |  |  |  | 152,064 |  |  |  | 153,413 |
Total Highway Services |  |  | 356,521 |  |  |  | 469,308 |  |  |  | 467,992 |
Dedicated |  |  | 342,473 |  |  |  | 257,739 |  |  |  | 144,845 |
Managed Freight: |  |  |  |  |  |  |  |  |  |  |  |
Brokerage |  |  | 102,479 |  |  |  | 102,730 |  |  |  | 79,630 |
TMS |  |  | 36,136 |  |  |  | 27,036 |  |  |  | 9,412 |
Warehousing |  |  | 47,779 |  |  |  | 23,580 |  |  |  | - |
Total Managed Freight |  |  | 186,394 |  |  |  | 153,346 |  |  |  | 89,042 |
Factoring |  |  | 9,140 |  |  |  | 5,062 |  |  |  | 3,128 |
Total revenues |  | $ | 894,528 |  |  | $ | 885,455 |  |  | $ | 705,007 |
Consolidation, Policy [Policy Text Block] | Principles of Consolidation The consolidated financial statements include the accounts of Covenant Transportation Group, Inc., a holding company incorporated in the state of Nevada in 1994, and its wholly owned subsidiaries: Covenant Transport, Inc., a Tennessee corporation; Southern Refrigerated Transport, Inc., an Arkansas corporation; Star Transportation, Inc., a Tennessee corporation, each d/b/a Covenant Transport Services; Covenant Transport Solutions, LLC., a Nevada limited liability company, d/b/a Transport Financial Services; Covenant Logistics, Inc., a Nevada corporation; Covenant Asset Management, LLC., a Nevada limited liability corporation; CTG Leasing Company, a Nevada corporation; IQS Insurance Risk Retention Group, Inc., a Vermont corporation; Driven Analytic Solutions, LLC, a Nevada limited liability company; Heritage Insurance, Inc., a Tennessee corporation; Landair Holdings, Inc., a Tennessee corporation; Landair Transport, Inc., a Tennessee corporation; Landair Logistics, Inc., a Tennessee corporation; Landair Leasing, Inc., a Tennessee corporation; and Transport Management Services, LLC, a Tennessee limited liability company. References in this report to "it," "we," "us," "our," the "Company," and similar expressions refer to Covenant Transportation Group, Inc. and its subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation.
Equity Method Investments [Policy Text Block] | Investment in Transport Enterprise Leasing, LLC Transport Enterprise Leasing, LLC ("TEL") is a tractor and trailer equipment leasing company and used equipment reseller. We evaluated our investment in TEL to determine whether it should be recorded on a consolidated basis. Our percentage of ownership interest ( 49% ), an evaluation of control, and whether a variable interest entity ("VIE") existed were all considered in our consolidation assessment. Based on the analysis, the Company is not the primary beneficiary of TEL and TEL should not be consolidated. We have accounted for our investment in TEL using the equity method of accounting given our 49% ownership interest and ability to exercise significant influence over operating and financial policies. Under the equity method, the cost of our investment is adjusted for our share of equity in the earnings of TEL and reduced by distributions received and our proportionate share of TEL's net income is included in our earnings. On a periodic basis, we assess whether there are any indicators that the fair value of our investment in TEL may be impaired. The investment is impaired only if the estimate of the fair value of the investment is less than the carrying value of the investment, and such decline in value is deemed to be other than temporary. To the extent impairment has occurred, the loss would be measured as the excess of the carrying amount of the investment over the fair value of the investment. As a result of TEL's earnings, no impairment indicators were noted that would provide for impairment of our investment.
Revenue [Policy Text Block] | Revenue Recognition Revenue, drivers' wages, and other direct operating expenses generated by our Highway Services and Dedicated reportable segments are recognized proportionally as the transportation service is performed based on the percentage of miles completed as of the period end, as opposed to recognizing revenue upon the completion of the load, which was our historic practice prior to the adoption of ASU 2014 - 09 on January 1, 2018. Revenue is recognized on a gross basis at amounts charged to our customers because we control and are primarily responsible for the fulfillment of the promised service. Revenue includes transportation revenue, fuel surcharges, loading and unloading activities, equipment detention, and other accessorial services. Revenue generated by our Managed Freight and Factoring segments is recognized upon completion of the services provided. Revenue is recorded on a gross basis, without deducting third party purchased transportation costs, as we act as a principal with substantial risks as primary obligor, except for transactions whereby equipment from our Highway Services and Dedicated segments perform the related services, which we record on a net basis in accordance with the related authoritative guidance. Revenue for the factoring business is recognized on a net basis after giving effect to receivables payments we make to the factoring client, given we are acting as an agent and are not the primary generator of the factored receivables in these transactions. Revenue for the warehousing business is generally recognized as the service is performed, based upon a weekly rate.
Use of Estimates, Policy [Policy Text Block] | Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires us to make decisions based upon estimates, assumptions, and factors we consider as relevant to the circumstances. Such decisions include the selection of applicable accounting principles and the use of judgment in their application, the results of which impact reported amounts and disclosures. Changes in future economic conditions or other business circumstances may affect the outcomes of our estimates and assumptions. Accordingly, actual results could differ from those anticipated.
Cash and Cash Equivalents, Policy [Policy Text Block] | Cash and Cash Equivalents We consider all highly liquid investments with a maturity of three months or less at acquisition to be cash equivalents. Additionally, we are also subject to concentrations of credit risk related to deposits in banks in excess of the Federal Deposit Insurance Corporation limits.
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] | Accounts Receivable and Concentration of Credit Risk We extend credit to our customers in the normal course of business. We perform ongoing credit evaluations and generally do not require collateral. Trade accounts receivable are recorded at their invoiced amounts, net of allowance for doubtful accounts. We evaluate the adequacy of our allowance for doubtful accounts quarterly. Accounts outstanding longer than contractual payment terms are considered past due and are reviewed individually for collectability. We maintain reserves for potential credit losses based upon its loss history and specific receivables aging analysis. Receivable balances are written off when collection is deemed unlikely. Accounts receivable are comprised of a diversified customer base that mitigates the level of concentration of credit risk. During 2019, 2018, and 2017 , our top ten customers generated 45% , 49% , and 49% of total revenue, respectively. In 2019 and 2018, one customer accounted for more than 10% of our consolidated revenue in each year. In 2017, there were two such customers. The carrying amount reported in the consolidated balance sheet for accounts receivable approximates fair value based on the fact that the receivables collection averaged approximately 33 days and 32 days in 2019 and 2018 , respectively. Included in accounts receivable is $86.6 million and $53.6 million of factoring receivables at December 31, 2019 and 2018 , respectively, net of allowances for bad debts of $0.5 million and $0.4 million in those years. We advance approximately 85% to 95% of each receivable factored and retain the remainder as collateral for collection issues that might arise. The retained amounts are returned to the clients after the related receivable has been collected, net of interest and fees on the amount we advanced. At December 31, 2019 , the retained amounts related to factored receivables totaled $1.8 million and were included in accounts payable in the consolidated balance sheet. Our factoring clients are smaller trucking companies that factor their receivables to us for a fee to facilitate faster cash flow. We evaluate each client's customer base under predefined criteria. The carrying value of the factored receivables approximates the fair value, as the receivables are generally repaid directly to us by the client's customer within 30–40 days due to the combination of the short-term nature of the financing transaction and the underlying quality of the receivables. The following table provides a summary (in thousands) of the activity in the allowance for doubtful accounts for 2019, 2018, and 2017 :
Years ended December 31: |  | Beginning balance January 1, |  |  | Additional provisions to (reversal of) allowance |  |  | Write-offs and other adjustments |  |  | Ending balance December 31, |
2019 |  | $ | 1,985 |  |  | $ | 255 |  |  | $ | (296 | ) |  | $ | 1,944 |
2018 |  | $ | 1,456 |  |  | $ | 507 |  |  | $ | 22 |  |  | $ | 1,985 |
2017 |  | $ | 1,345 |  |  | $ | 454 |  |  | $ | (343 | ) |  | $ | 1,456 |
Inventory, Policy [Policy Text Block] | Inventories and Supplies Inventories and supplies consist of parts, tires, fuel, and supplies. Tires on new revenue equipment are capitalized as a component of the related equipment cost when the tractor or trailer is placed in service and recovered through depreciation over the life of the vehicle. Replacement tires and parts on hand at year end are recorded at the lower of cost or net realizable value with cost determined using the first -in, first -out (FIFO) method. Replacement tires are expensed when placed in service.
Assets Held for Sale Policy [Policy Text Block] | Assets Held for Sale Assets held for sale include property and revenue equipment no longer utilized in continuing operations which are available and held for sale. Assets held for sale are no longer subject to depreciation, and are recorded at the lower of depreciated book value or fair market value less selling costs. We periodically review the carrying value of these assets for possible impairment. We expect to sell these assets within twelve months.
Property, Plant and Equipment, Policy [Policy Text Block] | Property and Equipment Property and equipment is stated at cost less accumulated depreciation. Depreciation for book purposes is determined using the straight-line method over the estimated useful lives of the assets. Depreciation of revenue equipment is our largest item of depreciation. We generally depreciate new tractors (excluding day cabs) over five years to salvage values of approximately 15% of their cost. We generally depreciate new trailers over seven years for refrigerated trailers and ten years for dry van trailers to salvage values of approximately 25 % of their cost. We annually review the reasonableness of our estimates regarding useful lives and salvage values of our revenue equipment and other long-lived assets based upon, among other things, our experience with similar assets, conditions in the used revenue equipment market, and prevailing industry practice. Changes in the useful life or salvage value estimates, or fluctuations in market values that are not reflected in our estimates, could have a material effect on our results of operations. Gains and losses on the disposal of revenue equipment are included in depreciation expense in the consolidated statements of operations. We lease certain revenue equipment under finance and operating leases with terms of approximately 48 to 84 months. Amortization of assets under finance and operating leases are included in depreciation and amortization expense and revenue and equipment rentals and purchased transportation, respectively. A portion of our tractors are protected by non-binding indicative trade-in values or binding trade-back agreements with the manufacturers. The remainder of our tractors and substantially all of our owned trailers are subject to fluctuations in market prices for used revenue equipment. Moreover, our trade-back agreements are contingent upon reaching acceptable terms for the purchase of new equipment. Declines in the price of used revenue equipment or failure to reach agreement for the purchase of new tractors with the manufacturers issuing trade-back agreements could result in impairment of, or losses on the sale of, revenue equipment.
Goodwill and Intangible Assets, Policy [Policy Text Block] | Goodwill and Other Intangible Assets We classify intangible assets into two categories: (i) intangible assets with finite lives subject to amortization and (ii) goodwill. We test goodwill for impairment annually and whenever events or changes in circumstances indicate that impairment may have occurred. We test intangible assets with finite lives for impairment if conditions exist that indicate the carrying value may not be recoverable. Such conditions may include an economic downturn in a geographic market or a change in the assessment of future operations. We record an impairment charge when the carrying value of the finite lived intangible asset is not recoverable by the cash flows generated from the use of the asset. We determine the useful lives of our identifiable intangible assets after considering the specific facts and circumstances related to each intangible asset. Factors we consider when determining useful lives include the contractual term of any agreement, the history of the asset, our long-term strategy for the use of the asset, any laws or other local regulations which could impact the useful life of the asset, and other economic factors, including competition and specific market conditions. Intangible assets that are deemed to have finite lives are amortized, generally on a straight-line basis, over their useful lives, ranging from 5 to 15 years.
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] | Impairment of Long-Lived Assets Pursuant to applicable accounting standards, revenue equipment and other long-lived assets are tested for impairment whenever an event occurs that indicates an impairment may exist. Expected future cash flows are used to analyze whether an impairment has occurred. If the sum of expected undiscounted cash flows is less than the carrying value of the long-lived asset, then an impairment loss is recognized. We measure the impairment loss by comparing the fair value of the asset to its carrying value. Fair value is determined based on a discounted cash flow analysis or the appraised value of the assets, as appropriate.
Insurance And Other Claims [Policy Text Block] | Insurance and Other Claims The primary claims arising against us consist of auto liability (personal injury and property damage), workers' compensation, cargo, commercial liability, and employee medical expenses. At December 31, 2019 , our insurance program involves self-insurance with the following risk retention levels (before giving effect to any commutation of an auto liability policy):
| ● | auto liability - $1.0 million
| ● | workers' compensation - $1.3 million
| ● | cargo - $0.3 million
| ● | employee medical - $0.4 million
| ● | physical damage - 100%
Due to our significant self-insured retention amounts, we have exposure to fluctuations in the number and severity of claims and to variations between our estimated and actual ultimate payouts. We accrue the estimated cost of the uninsured portion of pending claims and an estimate for allocated loss adjustment expenses including legal and other direct costs associated with a claim. Estimates require judgments concerning the nature and severity of the claim, historical trends, advice from third -party administrators and insurers, the size of any potential damage award based on factors such as the specific facts of individual cases, the jurisdictions involved, the prospect of punitive damages, future medical costs, and inflation estimates of future claims development, and the legal and other costs to settle or defend the claims. We have significant exposure to fluctuations in the number and severity of claims. If there is an increase in the frequency and severity of claims, or we are required to accrue or pay additional amounts if the claims prove to be more severe than originally assessed, or any of the claims would exceed the limits of our insurance coverage, our profitability could be adversely affected. In addition to estimates within our self-insured retention layers, we also must make judgments concerning claims where we have third party insurance and for claims outside our coverage limits. Upon settling claims and expenses associated with claims where we have third party coverage, we are generally required to initially fund payment to the claimant and seek reimbursement from the insurer. Receivables from insurers for claims and expenses we have paid on behalf of insurers were $0.3 million and $3.0 million at December 31, 2019 and 2018 , respectively, and are included in drivers' advances and other receivables on our consolidated balance sheet. Additionally, we accrue claims above our self-insured retention and record a corresponding receivable for amounts we expect to collect from insurers upon settlement of such claims. We have $2.1 million and $5.1 million at December 31, 2019 and 2018 , respectively, as a receivable in other assets and as a corresponding accrual in the long-term portion of insurance and claims accruals on our consolidated balance sheet for claims above our self-insured retention for which we believe it is reasonably assured that the insurers will provide their portion of such claims. We evaluate collectability of the receivables based on the credit worthiness and surplus of the insurers, along with our prior experience and contractual terms with each. If any claim occurrence were to exceed our aggregate coverage limits, we would have to accrue for the excess amount. Our critical estimates include evaluating whether a claim may exceed such limits and, if so, by how much. If one or more claims were to exceed our then effective coverage limits, our financial condition and results of operations could be materially and adversely affected. We also make judgments regarding the ultimate benefit versus risk of commuting certain periods within our auto liability policy. If we commute a policy, we assume 100% risk for covered claims in exchange for a policy refund. Effective April 2018, we entered into new auto liability policies with a three -year term. The policy includes a limit for a single loss of $9.0 million, an aggregate of $18.0 million for each policy year, and a $30.0 million aggregate for the 36 month term ended March 31, 2021. The policy included a policy release premium refund or commutation option of up to $14.0 million, less any future amounts paid on claims by the insurer. A decision with respect to commutation of the policy could be made before April 1, 2021. Additionally, our prior auto liability policy that ran from October 1, 2014 through March 31, 2018, included a commutation provision if we were to commute the policy for the entire 42 months. Based on claims paid to date the policy premium release refund could range from zero to $5.2 million, depending on actual claims settlements in the future. Management cannot predict whether or not future claims or the development of existing claims will justify a commutation of either policy period, and accordingly, no related amounts were recorded at December 31, 2019 . We carry excess policy layers above the primary auto liability policy described above.
Interest Capitalization, Policy [Policy Text Block] | Interest We capitalize interest on major projects during construction. Interest is capitalized based on the average interest rate on related debt. Capitalized interest was $0.1 million in 2019 and less than $0.1 million in 2018 and 2017, respectively.
Fair Value of Financial Instruments, Policy [Policy Text Block] | Fair Value of Financial Instruments Our financial instruments consist primarily of cash and cash equivalents, accounts receivable, available-for-sale securities, accounts payable, debt, and interest rate swaps. The carrying amount of cash and cash equivalents, accounts receivable, accounts payable, and current debt approximates their fair value because of the short-term maturity of these instruments. The carrying value of the factored receivables approximates the fair value, as the receivables are generally repaid directly to us by the client's customer within 30–40 days due to the combination of the short-term nature of the financing transaction and the underlying quality of the receivables. Interest rates that are currently available to us for issuance of long-term debt with similar terms and remaining maturities are used to estimate the fair value of our long-term debt, which primarily consists of revenue equipment installment notes. The fair value of our revenue equipment installment notes approximated the carrying value at December 31, 2019 , as the weighted average interest rate on these notes approximates the market rate for similar debt. Borrowings under our revolving Credit Facility approximate fair value due to the variable interest rate on the facility. Additionally, certain investments intended to serve the purposes of capital preservation and to fund insurance losses are designated as available-for-sale as discussed in Note 14 and are valued based on quoted prices in active markets. The fair value of our interest rate swap agreements is determined using the market-standard methodology of netting the discounted future fixed-cash payments and the discounted expected variable-cash receipts. The variable-cash receipts are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves. These analyses reflect the contractual terms of the swap, including the period to maturity, and use observable market-based inputs, including interest rate curves and implied volatilities. The fair value calculation also includes an amount for risk of non-performance of our counterparties using "significant unobservable inputs" such as estimates of current credit spreads to evaluate the likelihood of default, which we have determined to be insignificant to the overall fair value of our interest rate swap agreements.
Income Tax, Policy [Policy Text Block] | Income Taxes Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts 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. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. We have reflected the net liability after offsetting our deferred tax assets and liabilities in the deferred income taxes line in the accompanying consolidated balance sheets. We believe the future tax deductions will be realized principally through future reversals of existing taxable temporary differences and future taxable income, except for when a valuation allowance has been provided as discussed in Note 8. In the ordinary course of business there is inherent uncertainty in quantifying our income tax positions. We assess our income tax positions and record tax benefits for all years subject to examination based upon management's evaluation of the facts, circumstances, and information available at the reporting dates. For those tax positions where it is more likely than not that a tax benefit will be sustained, we have recorded the largest amount of tax benefit with a greater than 50% likelihood of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information. For those income tax positions where it is not more likely than not that a tax benefit will be sustained, no tax benefit has been recognized in the financial statements. Potential accrued interest and penalties related to unrecognized tax benefits are recognized as a component of income tax expense. Our policy is to recognize income tax benefit arising from the exercise of stock options and restricted share vesting based on the ordering provisions of the tax law as prescribed by the Internal Revenue Code, including indirect tax effects, if any.
Lessee, Leases [Policy Text Block] | Lease Accounting At the commencement date of a new lease agreement with contractual terms longer than twelve months, we recognize an asset and a lease liability on the balance sheet and categorize the lease as either finance or operating. Certain lease agreements have lease and nonlease components, and we have elected to account for these components separately. Right-of-use assets and lease liabilities are initially recorded based on the present value of lease payments over the term of the lease. When the rate implicit in the lease is readily determinable, this rate is used for calculating the present value of remaining lease payments; otherwise, our incremental borrowing rate is used. Right-of-use assets also include prepaid lease expenses and initial direct costs of executing the leases, which are reduced by landlord incentives. Options to extend or terminate a lease agreement are included in or excluded from the lease term, respectively, when those options are reasonably certain to be exercised. Right-of-use assets are tested for impairment in the same manner as long-lived assets. Finance lease obligations are utilized to finance a portion of our revenue equipment and are entered into with certain finance companies who are not parties to our Credit Facility and may contain guarantees of the residual value of the related equipment by us. As such, the residual guarantees are included in the related debt balance as a balloon payment at the end of the related term as well as included in the future minimum finance lease payments. These lease agreements require us to pay personal property taxes, maintenance, and operating expenses. Our operating lease obligations do not typically include residual value guarantees or material restrictive covenants. Right-of-use assets are included in net property and equipment. For finance leases, right-of-use assets are amortized on a straight-line basis over the shorter of the expected useful life or the lease term, and the carrying amount of the lease liability is adjusted to reflect interest expense, which is recorded in interest expense, net. Operating lease right-of-use assets are amortized over the lease term on a straight-line basis, and the lease liability is measured at the present value of the remaining lease payments. Variable lease payments not included in the lease liability for mileage charges on leased revenue equipment are expensed as incurred. Operating lease costs are recognized on a straight-line basis over the term of the lease within operating expenses.
Stockholders' Equity, Policy [Policy Text Block] | Capital Structure The shares of Class A and B common stock are substantially identical except that the Class B shares are entitled to two votes per share and immediately convert to Class A shares if beneficially owned by anyone other than our Chief Executive Officer or certain members of his immediate family, while Class A shares are entitled to one vote per share. The terms of any future issuances of preferred shares will be set by our Board of Directors.
Earnings Per Share, Policy [Policy Text Block] | Income Per Share Basic income per share excludes dilution and is computed by dividing earnings available to common stockholders by the weighted-average number of common shares outstanding for the period. Diluted income per share reflects the dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in our earnings. The calculation of diluted earnings per share includes approximately 0.2 million unvested shares. A de minimis number of unvested shares have been excluded from the calculation of diluted earnings per share since the effect of any assumed exercise of the related awards would be anti-dilutive for the years ended December 31, 2019, 2018, and 2017 , respectively. Income per share is the same for both Class A and Class B shares. The following table sets forth the calculation of net income per share included in the consolidated statements of operations for each of the three years ended December 31:
(in thousands except per share data) |  |  |  |  |  |  |  |  |  |  |  |
|  | 2019 |  |  | 2018 |  |  | 2017 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 8,477 |  |  | $ | 42,503 |  |  | $ | 55,439 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic income per share – weighted-average shares |  |  | 18,435 |  |  |  | 18,340 |  |  |  | 18,279 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Equivalent shares issuable upon conversion of unvested restricted shares |  |  | 200 |  |  |  | 129 |  |  |  | 93 |
Denominator for diluted income per share adjusted weighted-average shares and assumed conversions |  |  | 18,635 |  |  |  | 18,469 |  |  |  | 18,372 |
Net income per share: |  |  |  |  |  |  |  |  |  |  |  |
Basic income per share |  | $ | 0.46 |  |  | $ | 2.32 |  |  | $ | 3.03 |
Diluted income per share |  | $ | 0.45 |  |  | $ | 2.30 |  |  | $ | 3.02 |
Share-based Payment Arrangement [Policy Text Block] | Stock-Based Employee Compensation We issue several types of stock-based compensation, including awards that vest based on service and performance conditions or a combination of the conditions. Performance-based awards vest contingent upon meeting certain performance criteria established by the Compensation Committee of the Board of Directors. All awards require future service. For performance-based awards, determining the appropriate amount to expense in each period is based on likelihood and timing of achieving the stated targets for performance-based awards and requires judgment, including forecasting future financial results. The estimates are revised periodically based on the probability and timing of achieving the required performance and adjustments are made as appropriate. Awards that are only subject to time vesting provisions are amortized using the straight-line method.
New Accounting Pronouncements, Policy [Policy Text Block] | Recent Accounting Pronouncements Accounting Standards adopted In May 2014 the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ("ASU") 2014 - 09, which supersedes virtually all existing revenue guidance. The new standard introduces a five -step model to determine when and how revenue is recognized. The premise of the new model is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance also requires enhanced disclosures regarding the nature, timing and uncertainty of revenue and cash flows arising from an entity’s contracts with customers. The new standard became effective for us for our annual and interim reporting periods beginning January 1, 2018. The guidance permits the use of either a full retrospective or modified retrospective adoption approach with a cumulative effect adjustment recorded in either scenario as necessary upon transition. As permitted by the guidance, we elected the modified retrospective approach and thus recognized the cumulative effect of adoption of $0.6 million, net of tax, as a positive adjustment to retained earnings in the first quarter of 2018 as a result of the initial recording of in process revenue and associated direct expenses. Based on our review of our customer shipping arrangements and the related guidance, we have concluded that we will recognize revenue from loads proportionally as the transportation service is performed based on the percentage of miles completed as of the period end, as opposed to recognizing revenue upon the completion of the load, which was our historic practice. Revenue will be recognized on a gross basis at amounts charged to our customers because we control and are primarily responsible for the fulfillment of the promised service. Our recognition of revenue under the new standard approximates our recognition of revenue under the prior standard, as there will generally be a consistent amount of freight in process at the beginning and end of the period; however, seasonality and the day on which the period ends may cause minor differences. In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016 - 02, which establishes Topic 842 to replace Topic 840 regarding accounting for leases. Topic 842 requires lessees to recognize a right-of-use asset and a lease liability for most leases on the balance sheet. Leases that were previously described as capital leases are now called finance leases, and operating leases with a term of at least twelve months are now required to be recorded on the balance sheet. We adopted this standard on January 1, 2019 using the modified retrospective approach. In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016 - 02, which establishes Topic 842 to replace Topic 840 regarding accounting for leases. Topic 842 requires lessees to recognize a right-of-use asset and a lease liability for most leases on the balance sheet. Leases that were previously described as capital leases are now called finance leases, and operating leases with a term of at least twelve months are now required to be recorded on the balance sheet. We adopted this standard on January 1, 2019 using the modified retrospective approach. In July 2018, FASB issued ASU 2018 - 11, which provides an optional transition method allowing application of Topic 842 as of the adoption date and recognition of a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption, with no restatement of comparative prior periods. We have adopted the standard using this optional transition method. Within Topic 842, FASB has provided a number of practical expedients for applying the new lease standard in relation to leases that commenced prior to the standard's effective date. We have elected the package of practical expedients which allowed us, among other things, to carry forward the operating and capital lease classifications from Topic 840 to the new operating and finance lease classifications under Topic 842. The adoption of this ASU resulted in the initial recognition of operating lease assets of $40.1 million and liabilities totaling $41.0 million, comprised of $15.3 million of current operating lease obligations and $25.7 million of long-term operating lease obligations. Accounting Standards not yet adopted In June 2016, FASB issued ASU 2016 - 13, Financial Instruments - Measurement of Credit Losses on Financial Instruments , which will require an entity to measure credit losses for certain financial instruments and financial assets, including trade receivables. Under this update, on initial recognition and at each reporting period, an entity will be required to recognize an allowance that reflects the entity’s current estimate of credit losses expected to be incurred over the life of the financial instrument. This update will be effective for us for our annual reporting period beginning January 1, 2023, including interim periods within that reporting period. Early adoption is permitted. We are currently evaluating the impacts the adoption of this standard will have on the consolidated financial statements.

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- Definition Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4273-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 + Details
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- Definition Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.3A-02) -URI http://asc.fasb.org/extlink&oid=116822174&loc=d3e355033-122828 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.3A-03) -URI http://asc.fasb.org/extlink&oid=116822174&loc=d3e355100-122828 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109239629&loc=d3e5614-111684 + Details
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- Definition Disclosure of accounting policy for equity method of accounting for investments and other interests. Investment includes, but is not limited to, unconsolidated subsidiary, corporate joint venture, noncontrolling interest in real estate venture, limited partnership, and limited liability company. Information includes, but is not limited to, ownership percentage, reason equity method is or is not considered appropriate, and accounting policy election for distribution received. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14064-108612 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 21D -URI http://asc.fasb.org/extlink&oid=118932676&loc=SL94080555-108585 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 + Details
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- Definition Disclosure of accounting policy for determining the fair value of financial instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 60 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7493716&loc=d3e21868-110260 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13279-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 + Details
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- Definition Disclosure of accounting policy for goodwill and intangible assets. This accounting policy also may address how an entity assesses and measures impairment of goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Disclosure of accounting policy for recognizing and measuring the impairment of long-lived assets. An entity also may disclose its accounting policy for long-lived assets to be sold. This policy excludes goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 05 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109226317&loc=d3e202-110218 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.CC) -URI http://asc.fasb.org/extlink&oid=27011434&loc=d3e125687-122742 + Details
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- Definition Disclosure of accounting policy for interest capitalization. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 + Details
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- Definition Disclosure of inventory accounting policy for inventory classes, including, but not limited to, basis for determining inventory amounts, methods by which amounts are added and removed from inventory classes, loss recognition on impairment of inventories, and situations in which inventories are stated above cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=116847112&loc=d3e4556-108314 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116846552&loc=d3e543-108305 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=116847112&loc=d3e4492-108314 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Disclosure of accounting policy for leasing arrangement entered into by lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918666-209980 + Details
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- Definition Disclosure of accounting policy for estimating the allowance for losses on loans and lease receivables. The disclosure may include (a) how the entity determines each element of the allowance, (b) which loans are evaluated individually and which loans are evaluated as a group, (c) how the entity determines both the allocated and unallocated portions of the allowance, (d) how the entity determines the loss factors applied to graded loans in order to develop a general allowance, and (e) what self-correcting mechanism the entity uses to reduce differences between estimated and actual losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5144-111524 + Details
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