Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Operating activities:
Net income (loss)	$ 1,850	$ (4,474)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	33,274	33,399
Provision for doubtful accounts	798	(82)
Deferred income taxes, net	(4,176)	(2,071)
Share-based compensation	246	192
Other	(859)	(1,446)
Changes in operating assets and liabilities:
Accounts receivable	(10,066)	(5,006)
Inventories and prepaid expenses	(458)	(260)
Accounts payable and accrued liabilities	16,264	820
Insurance and claims accruals	1,203	5,617
Net cash provided by operating activities	38,076	26,696
Investing activities:
Capital expenditures	(34,577)	(10,095)
Proceeds from sale of property and equipment	12,882	10,508
Change in other assets, net	19	40
Net cash (used in) provided by investing activities	(21,676)	453
Financing activities:
Borrowings under long-term debt	48,938	73,277
Payments on long-term debt	(50,583)	(84,820)
Payments on capitalized lease obligations	(12,840)	(13,749)
Net increase in bank drafts payable	(1,860)	(3,615)
Proceeds from employee stock plans	18	24
Net cash used in financing activities	(16,327)	(28,883)
Increase (Decrease) in cash	73	(1,734)
Cash:
Beginning of period	14	1,742
End of period	87	8
Cash paid during the period for:
Interest	2,574	2,860
Income taxes	407	140
Supplemental disclosure of non-cash investing activities:
Liability incurred for leases on revenue equipment		27,602
Accounts Payable [Member]
Supplemental disclosure of non-cash investing activities:
Capital Expenditures Incurred but Not yet Paid	3,635	2,610
Long-term Debt [Member]
Supplemental disclosure of non-cash investing activities:
Capital Expenditures Incurred but Not yet Paid		$ 301