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Acquisition of Interstate Distributor Co. (Tables) | 12 Months Ended
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Dec. 31, 2018
Business Combinations [Abstract] |
Business Acquisition, Pro Forma Information [Text Block] |
| Year ended |  | Year ended
| December 31, 2016 |  | December 31, 2017
| (in thousands) |  |
Operating revenue | $ | 938,007 |  | $ | 756,498
Net income | $ | 54,222 |  | $ | 72,752
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] | The assets and liabilities associated with IDC were recorded at their fair values as of the acquisition date and the amounts are as follows:
| (in thousands)
Cash and cash equivalents | $ | 6,316
Trade and other accounts receivable | 35,131
Other current assets | 2,426
Property and equipment | 71,964
Other non-current assets | 1,244
Intangible assets | 7,800
Goodwill | 32,198
Total assets | 157,079
Accounts payable, accrued expenses, and current portion of long-term debt | (35,209)
Insurance accruals | (10,826)
Long-term debt | (17,404)
Other accruals | (596)
Total consideration transferred | $ | 93,044
Schedule of Business Acquisitions, by Acquisition [Table Text Block] |
TOTAL PURCHASE PRICE CONSIDERATION | (in thousands)
Cash paid pursuant to Stock Purchase Agreement | $ | 93,044
Cash acquired included in historical book value of IDC assets and liabilities | (6,316)
Net cash paid | $ | 86,728

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- Definition Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1486-128463 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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