Significant Accounting Policies [Text Block] | Note 1. Significant Accounting Policies Basis of Presentation The condensed consolidated financial statements include the accounts of Covenant Transportation Group, Inc., a Nevada holding company, and its wholly owned subsidiaries. References in this report to "we," "us," "our," the "Company," and similar expressions refer to Covenant Transportation Group, Inc. and its wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and with the instructions to Form 10 10 X 1933. Certain information and footnote disclosures have been condensed or omitted pursuant to such rules and regulations. The December 31, 2017, three six June 30, 2018 not may December 31, 2018. 10 December 31, 2017. Recent Accounting Pronouncements Accounting Standards adopted In May 2014 2014 09, five January 1, 2018. As permitted by the guidance, we elected the modified retrospective approach and thus recognized the cumulative effect of adoption of $0.6 first 2018 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 The following tables summarize the impacts of adopting ASU 606 three six June 30, 2018. Three Months Ended June 30, 2018 Financial Statement Line Item (in thousands) As reported Adjustments Balances without adoption of Topic 606 Consolidated Balance S heet Accounts receivable, net of allowances $ 103,053 $ (1,325 ) $ 101,728 Total assets 729,826 (1,325 ) 728,501 Accrued expenses 29,420 (140 ) 29,280 Deferred income taxes 70,552 (326 ) 70,226 Total liabilities 416,275 (466 ) 415,809 Retained earnings 172,450 (859 ) 171,591 Total stockholders’ equity 313,551 (859 ) 312,692 Total liabilities and stockholders’ equity 729,826 (1,325 ) 728,501 Consolidated Statement of Operations Freight revenue 170,635 (34 ) 170,601 Total revenue 196,318 (34 ) 196,284 Salaries, wages and related expenses 64,633 (1 ) 64,632 Revenue equipment rentals and purchased transportation 37,388 60 37,448 Total operating expenses 182,253 59 182,312 Income tax expense 3,928 (25 ) 3,903 Net income 9,971 (68 ) 9,903 Consolidated Statement of Comprehensive Income Net income 9,971 (68 ) 9,903 Comprehensive income 10,551 (68 ) 10,483 Consolidated Statement of Cash Flows Operating Cash Flows Net income 9,971 (68 ) 9,903 Deferred income tax expense 4,805 (25 ) 4,780 Change in: Receivables and advances (1,174 ) 34 (1,140 ) Change in: Accounts payable and accrued expenses 5,881 59 5,940 Net cash flows provided by operating activities 25,936 - 25,936 Six Months Ended June 30, 2018 Financial Statement Line Item (in thousands) As reported Adjustments Balances without adoption of Topic 606 Consolidated Balance S heet Accounts receivable, net of allowances $ 103,053 $ (1,325 ) $ 101,728 Total assets 729,826 (1,325 ) 728,501 Accrued expenses 29,420 (140 ) 29,280 Deferred income taxes 70,552 (326 ) 70,226 Total liabilities 416,275 (466 ) 415,809 Retained earnings 172,450 (859 ) 171,591 Total stockholders’ equity 313,551 (859 ) 312,692 Total liabilities and stockholders’ equity 729,826 (1,325 ) 728,501 Consolidated Statement of Operations Freight revenue 321,097 (315 ) 320,782 Total revenue 369,884 (315 ) 369,569 Salaries, wages and related expenses 125,253 14 125,267 Revenue equipment rentals and purchased transportation 68,079 41 68,120 Total operating expenses 349,394 55 349,449 Income tax expense 5,467 (101 ) 5,366 Net income 14,388 (269 ) 14,119 Consolidated Statement of Comprehensive Income Net income 14,388 (269 ) 14,119 Comprehensive income 15,639 (269 ) 15,370 Consolidated Statement of Cash Flows Operating Cash Flows Net income 14,388 (269 ) 14,119 Deferred income tax expense 6,495 (101 ) 6,394 Change in: Receivables and advances 11,821 315 12,136 Change in: Accounts payable and accrued expenses 1,635 55 1,690 Net cash flows provided by operating activities 62,632 - 62,632 We have two The Truckload segment consists of three three Managed Freight is comprised primarily of freight brokerage and logistics services. Also included in Managed Freight is our accounts receivable factoring business, which does not $2.0 2018 The following table summarizes our revenue by reportable segment by operating fleet, as used by our chief operating decision maker of the Company in making decisions regarding allocation of resources, etc., for the three six June 30, 2018: (in thousands) Three Months ended June 30, Six Months ended June 30, 2018 2017 2018 2017 Total Revenues: Truckload: Covenant Transport $ 105,648 $ 89,444 $ 201,361 $ 177,287 Truckload: SRT 45,594 41,823 86,297 82,523 Truckload: Star Transportation 19,469 16,364 37,601 33,446 Managed Freight 25,607 16,695 44,625 29,814 Total $ 196,318 $ 164,326 $ 369,884 $ 323,070 Accounting Standards not In February 2016, 2016 02, not twelve January 1, 2019, 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, while depreciation for tax purposes is generally recorded using an accelerated method. Depreciation of revenue equipment is our largest item of depreciation. We have historically depreciated new tractors (excluding day cabs) over five 15% seven ten 25% not |