Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Operating activities
Net income	$ 5,019	$ 1,382
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income tax provision	1,407	190
Depreciation and amortization	21,833	23,901
Losses on sale of equipment	1,229	805
Share based compensation	856	208
Other	308	1,688
Changes in operating assets and liabilities:
Receivables	3,560	(10,706)
Prepaid insurance and licenses	(4,761)	(5,242)
Operating supplies	(285)	(936)
Other assets	383	(1,582)
Accounts payable and other accrued liabilities	(2,844)	(13,936)
Accrued wages and benefits	(1,226)	2,365
Net cash provided by (used in) operating activities	25,479	(1,863)
Investing activities
Payments for purchases of property and equipment	(36,604)	(26,871)
Proceeds from sales of property and equipment	13,115	8,176
Sale of subsidiary, net of cash	(9,002)
Net cash used in investing activities	(32,491)	(18,695)
Financing activities
Borrowings under lines of credit		102,676
Payments under lines of credit		(82,950)
Borrowings under long-term debt	14,355	23,438
Payments of long-term debt	(31,128)	(36,062)
Payments of financing costs and original issue discount		(14)
Payments of long-term consideration for business acquistion	(990)	(1,010)
Tax withholding related to net share settlement of restricted stock awards	(39)
Repurchase of membership units		(51)
Book overdraft	5,233	9,469
Net cash provided by (used in) financing activities	(12,569)	15,496
Change in cash previously included in assets held for sale	11,784
Net change in cash and cash equivalents	(7,797)	(5,062)
Cash and cash equivalents:
Beginning of year	9,892	9,232
End of period	2,095	4,170
Supplemental disclosure of cash flow information
Cash paid during the year for interest	5,620	11,249
Cash refunded during the year for income taxes	(91)	(330)
Supplemental disclosure of significant noncash investing and financing activities
Debt obligations relieved in conjunction with the divesture of Xpress Internacional	7,109
Uncollected proceeds from asset sales		1,706
Capital Lease Obligations [Member]
Supplemental disclosure of significant noncash investing and financing activities
Capital lease extinguishments	$ 33	$ 764

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