Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Operating activities
Net loss	$ (8,359,000)	$ (2,118,000)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	22,335,000	25,102,000
Provision for doubtful accounts	127,000	63,000
Deferred income taxes	(4,492,000)	(372,000)
Stock-based compensation	86,000	(78,000)
Gain on disposal of assets, net	(1,266,000)	(2,256,000)
Recognition of deferred gain	(4,000)	(3,000)
Changes in operating assets and liabilities:
Accounts receivable	(7,162,000)	(18,707,000)
Inventories and prepaid expenses	(983,000)	(1,617,000)
Trade accounts payable and accrued expenses	6,490,000	9,295,000
Insurance and claims accruals	2,182,000	236,000
Net cash provided by operating activities	8,954,000	9,545,000
Investing activities
Purchases of property and equipment	(7,839,000)	(25,294,000)
Proceeds from sale of property and equipment	11,727,000	13,596,000
Change in other assets	(110,000)	(8,000)
Net cash provided by (used in) investing activities	3,778,000	(11,706,000)
Financing activities
Borrowings under long-term debt	98,628,000	49,737,000
Principal payments on long-term debt	(93,528,000)	(39,680,000)
Principal payments on capitalized lease obligations	(16,007,000)	(8,459,000)
Principal payments on note payable	(912,000)	(671,000)
Net (decrease) increase in bank drafts payable	(2,942,000)	269,000
Proceeds from exercise of stock options		15,000
Net cash (used in) provided by financing activities	(14,761,000)	1,211,000
Decrease in cash	(2,029,000)	(950,000)
Cash:
Beginning of period	2,659,000	2,726,000
End of period	630,000	1,776,000
Cash paid during the period for:
Interest	2,038,000	1,544,000
Supplemental disclosure of non-cash investing activities:
Liability incurred for leases on revenue equipment	16,484,000	15,421,000
Accounts Payable [Member]
Supplemental disclosure of non-cash investing activities:
Capital Expenditures Incurred but Not yet Paid	7,051,000	6,428,000
Long-term Debt [Member]
Supplemental disclosure of non-cash investing activities:
Capital Expenditures Incurred but Not yet Paid	$ 233,000