Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Operating activities
Net loss	$ (9,110)	$ (17,671)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	44,947	45,058
Provision for doubtful accounts	187	153
Deferred income taxes	(4,774)	(9,589)
Stock based compensation	216	131
Gain on disposal of assets	(1,648)	(2,151)
Other	(250)	161
Changes in operating assets and liabilities:
Accounts receivable	(1,752)	(9,792)
Inventories, prepaid expenses and other current assets	1,103	1,098
Trade accounts payable and accrued expenses	(3,783)	4,416
Insurance and claims accruals	10,757	3,722
Net cash provided by operating activities	35,893	15,536
Investing activities
Purchases of property and equipment	(12,924)	(22,014)
Proceeds from sale of property and equipment	15,757	17,651
Change in other assets	38	15
Net cash provided by (used in) investing activities	2,871	(4,348)
Financing activities
Borrowings under long-term debt	78,478	276,556
Principal payments on long-term debt	(98,222)	(263,811)
Principal payments on capitalized lease obligations	(17,230)	(23,136)
Principal payments on note payable	(1,715)	(1,820)
Net increase in bank drafts payable	(1,805)	106
Proceeds from exercise of stock options	2
Net cash used in financing activities	(40,492)	(12,105)
Decrease in cash and cash equivalents	(1,728)	(917)
Cash and cash equivalents:
Beginning of year	1,742	2,659
End of year	14	1,742
Cash paid during the period for:
Interest	3,802	4,274
Income taxes	477	165
Supplemental schedule of non-cash investing and financing activities:
Liability incurred for capitalized leases on revenue equipment	27,603	27,757
Liability incurred for notes payable	1,387	1,801
Accounts Payable [Member]
Supplemental schedule of non-cash investing and financing activities:
Capital Expenditures Incurred but Not yet Paid	5
Long-term Debt [Member]
Supplemental schedule of non-cash investing and financing activities:
Capital Expenditures Incurred but Not yet Paid		$ 355