Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating activities:
Net loss	$ (2,474,000)	$ (4,873,000)
Depreciation and amortization	10,915,000	11,157,000
Provision for doubtful accounts	(125,000)	62,000
Deferred income taxes	(1,590,000)	(2,674,000)
Stock-based compensation	(89,000)	8,000
Gain on disposal of assets, net	(389,000)	(542,000)
Deferred gain	25,000	(2,000)
Changes in operating assets and liabilities:
Accounts receivable	(2,326,000)	(5,033,000)
Inventories and prepaid expenses	(889,000)	(2,465,000)
Trade accounts payable and accrued expenses	(549,000)	4,572,000
Insurance and claims accruals	658,000	760,000
Net cash provided by operating activities	3,167,000	970,000
Investing activities:
Purchases of property and equipment	(2,791,000)	(341,000)
Proceeds from sale of property and equipment	2,160,000	5,860,000
Change in other assets	(7,000)	(42,000)
Net cash (used in) provided by investing activities	(638,000)	5,477,000
Financing activities:
Borrowings under long-term debt	31,128,000	51,557,000
Principal payments on long-term debt	(26,704,000)	(44,857,000)
Principal payments on capitalized lease obligations	(7,534,000)	(11,100,000)
Principal payments on note payable	(448,000)	(455,000)
Net (decrease) increase in bank drafts payable	(401,000)	54,000
Net cash used in financing activities	(3,959,000)	(4,801,000)
(Decrease) increase in cash	(1,430,000)	1,646,000
Cash:
Beginning of period	1,742,000	2,659,000
End of period	312,000	4,305,000
Cash paid during the period for:
Interest	935,000	995,000
Supplemental disclosure of non-cash investing activities:
Liability incurred for leases on revenue equipment	10,275,000	10,686,000
Accounts Payable [Member]
Supplemental disclosure of non-cash investing activities:
Capital Expenditures Incurred but Not yet Paid	7,648,000
Long-term Debt [Member]
Supplemental disclosure of non-cash investing activities:
Capital Expenditures Incurred but Not yet Paid	$ 295,000