Consolidated Condensed Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities
Net loss	$ (3,255)	$ (5,649)
Non-cash items included in net loss
Gain on sale of property and equipment	(266)	(1,760)
Depreciation and amortization	3,575	4,256
Provision for losses on accounts receivable	(95)	(192)
Deferred compensation	14	137
Equity in loss (earnings) of limited partnership	10	(235)
Gain on sale of investment in limited partnership	(1,649)	0
Change in operating assets and liabilities
Accounts receivable	(712)	3,220
Tires on equipment in use	(1,092)	(878)
Other current assets	1,528	3,188
Other assets	25	(83)
Accounts payable	(1,427)	(9,778)
Insurance and claims accruals	(1,265)	(1,410)
Accrued liabilities, payroll and other	249	(91)
Net cash used in operating activities	(4,360)	(9,275)
Cash flows from investing activities
Expenditures for property and equipment	(1,138)	(297)
Proceeds from sale of property and equipment	1,347	6,118
Cash distributions from investments	180	31
Proceeds from sale of investment in limited partnership	3,184	0
Net cash provided by investing activities	3,573	5,852
Cash flows from financing activities
Proceeds from borrowings under credit facility	20,020	25,281
Payments against borrowings under credit facility	(20,396)	(20,928)
Proceeds from notes payable and capital lease obligations	0	31
Repayments of notes payable and capital lease obligations	(734)	(466)
Income tax expense of stock-based awards	0	(62)
Purchases of treasury stock	(4)	(3)
Net cash (used in) provided by financing activities	(1,114)	3,853
Net (decrease) increase in cash and cash equivalents	(1,901)	430
Cash and cash equivalents at beginning of period	2,907	1,048
Cash and cash equivalents at end of period	1,006	1,478
Supplemental disclosure of cash flow information:
Interest paid	$ 192	$ 203