Consolidated Condensed Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities
Net loss	$ (10,241)	$ (24,910)
Non-cash items included in net loss
Depreciation and amortization	11,045	17,029
Gain on sale of property and equipment	(4,939)	(1,234)
Provision for losses on accounts receivable	(437)	1,061
Deferred income taxes	0	(1,647)
Deferred compensation	203	152
Postretirement benefits	5	(69)
Equity in earnings of limited partnership	(543)	(551)
Change in operating assets and liabilities
Accounts receivable	1,477	(5,835)
Tires on equipment in use	(3,972)	(4,184)
Other current assets	(1,360)	(1,327)
Other assets	9	(1,536)
Accounts payable	(2,435)	(122)
Insurance and claims accruals	(2,477)	4,631
Accrued liabilities, payroll and other	979	995
Net cash used in operating activities	(12,686)	(17,547)
Cash flows from investing activities
Expenditures for property and equipment	(1,893)	(19,683)
Proceeds from sale of property and equipment	12,135	4,969
Cash distributions from investments	365	999
Net cash provided by (used in) investing activities	10,607	(13,715)
Cash flows from financing activities
Proceeds from borrowings under credit facility	71,834	98,273
Payments against borrowings under credit facility	(67,823)	(75,610)
Proceeds from notes payable and capital lease obligations	31	9,685
Repayments of notes payable and capital lease obligations	(1,446)	(132)
Income tax (expense) benefit of stock options and restricted stock	(112)	22
Proceeds from capital stock transactions, net	0	604
Purchases of treasury stock	(5)	(635)
Net cash provided by financing activities	2,479	32,207
Net increase in cash and cash equivalents	400	945
Cash and cash equivalents at beginning of period	1,048	1,203
Cash and cash equivalents at end of period	1,448	2,148
Supplemental disclosure of cash flow information:
Interest paid	586	396
Stock options	$ 0	$ 582