Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Operating activities:
Net income (loss)	$ 1,116	$ (1,589)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	10,671	11,455
Provision for doubtful accounts	17	113
Deferred income taxes, net	510
Share-based compensation	226	116
Gain on disposal of assets, net	(503)	(343)
Loss on extinguishment of debt	750
Other	(2)	1
Changes in operating assets and liabilities:
Accounts receivable	6,739	(12,585)
Inventories and prepaid expenses	(2,841)	(1,855)
Accounts payable and accrued liabilities	2,167	9,447
Insurance and claims accruals	550	988
Other long-term assets and liabilities	294
Net cash provided by operating activities	19,694	5,748
Investing activities:
Capital expenditures	(11,678)	(2,959)
Proceeds from sale of property and equipment	6,196	3,853
Change in other assets, net		7
Net cash (used in) provided by investing activities	(5,482)	901
Financing activities:
Borrowings under long-term debt	108,736	22,895
Payments on long-term debt	(112,236)	(21,795)
Payments on capitalized lease obligations	(7,507)	(5,194)
Net increase in bank drafts payable	(2,409)	(2,101)
Excess tax benefit from exercise of stock options	433
Principal payments on note payable	(335)	(339)
Net payments on stock-based awards	(160)	(123)
Net cash used in financing activities	(13,478)	(6,657)
Increase (Decrease) in cash	734	(8)
Cash:
Beginning of period	205	14
End of period	939	6
Cash paid during the period for:
Interest	570	857
Income taxes	55	163
Accounts Payable [Member]
Supplemental disclosure of non-cash investing activities:
Purchases of revenue equipment included in accounts payable	$ 238	$ 7,296