Consolidated Condensed Statements of Cash Flows (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities
Net loss	$ (11,242)	$ (8,150)
Non-cash items included in net loss
Gain on sale of property and equipment	(573)	(580)
Depreciation and amortization	11,027	9,912
Provision for losses on accounts receivable	465	361
Deferred income tax	(1,662)	(1,207)
Deferred compensation	250	405
Postretirement benefits	(69)	0
Investment income	(359)	(197)
Change in operating assets and liabilities
Accounts receivable	(3,300)	(667)
Tires on equipment in use	(2,599)	(1,667)
Other current assets	1,072	4,859
Other assets	(411)	(107)
Accounts payable	(1,901)	(387)
Insurance and claims accruals	38	(2,146)
Accrued liabilities, payroll and other	(358)	2,039
Net cash (used in) provided by operating activities	(9,622)	2,468
Cash flows from investing activities
Expenditures for property and equipment	(4,768)	(5,074)
Proceeds from sale of property and equipment	3,730	4,026
Cash distributions from investment	761	787
Other	0	76
Net cash used in investing activities	(277)	(185)
Cash flows from financing activities
Proceeds from borrowings	70,048	10,407
Payments against borrowings	(60,716)	(10,407)
Income tax benefit of stock options and restricted stock	14	4
Proceeds from capital stock transactions, net	598	671
Purchases of treasury stock	(616)	(70)
Net cash provided by provided by financing activities	9,328	605
Net (decrease) increase in cash and cash equivalents	(571)	2,888
Cash and cash equivalents at beginning of period	1,203	3,667
Cash and cash equivalents at June 30	$ 632	$ 6,555