Consolidated Condensed Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities
Net loss	$ (5,858)	$ (4,578)
Non-cash items included in net loss
Gain on sale of property and equipment	(567)	(2,537)
Depreciation and amortization	7,025	7,727
Provision for losses on accounts receivable	(60)	(416)
Deferred compensation	104	246
Equity in loss (earnings) of limited partnership	10	(332)
Gain on sale of investment in limited partnership	(1,649)	0
Change in operating assets and liabilities
Accounts receivable	(4,060)	2,388
Tires on equipment in use	(2,041)	(2,248)
Other current assets	(1,151)	(2,194)
Other assets	65	(43)
Accounts payable	3,368	(4,133)
Insurance and claims accruals	(196)	(2,648)
Accrued liabilities, payroll and other	(75)	(267)
Net cash used in operating activities	(5,085)	(9,035)
Cash flows from investing activities
Expenditures for property and equipment	(1,655)	(1,073)
Proceeds from sale of property and equipment	3,094	7,219
Cash distributions from investments	180	312
Proceeds from sale of investment in limited partnership	3,184	0
Net cash provided by investing activities	4,803	6,458
Cash flows from financing activities
Proceeds from borrowings under credit facility	52,055	50,656
Payments against borrowings under credit facility	(52,220)	(46,285)
Proceeds from notes payable and capital lease obligations	28	31
Repayments of notes payable and capital lease obligations	(1,548)	(951)
Income tax expense of stock-based awards	0	(92)
Purchases of treasury stock	(5)	(4)
Net cash (used in) provided by financing activities	(1,690)	3,355
Net (decrease) increase in cash and cash equivalents	(1,972)	778
Cash and cash equivalents at beginning of period	2,907	1,048
Cash and cash equivalents at end of period	935	1,826
Supplemental disclosure of cash flow information:
Interest paid	$ 390	$ 399