Consolidated Condensed Balance Sheets (unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 935	$ 2,907
Accounts receivable, net of allowance for doubtful accounts of $1,067 and $1,565, respectively	44,189	40,069
Tires on equipment in use, net	9,042	8,176
Equipment held for sale	41	832
Other current assets	8,950	7,840
Total current assets	63,157	59,824
Property and equipment, net	49,052	54,680
Deferred income taxes	3,039	3,039
Other assets	4,061	6,096
Total assets	119,309	123,639
Current liabilities
Accounts payable	29,563	26,178
Insurance and claims accruals	9,137	10,033
Accrued payroll and deferred compensation	3,800	3,951
Accrued liabilities	1,288	1,429
Current maturities of notes payable and capital lease obligations	3,157	3,040
Deferred income taxes	2,727	2,727
Total current liabilities	49,672	47,358
Borrowings under credit facility	26,049	26,215
Long-term notes payable and capital lease obligations	15,254	16,891
Insurance and claims accruals	5,604	4,904
Total liabilities	96,579	95,368
Shareholders' equity
Common stock, $1.50 par value per share; 75,000 shares authorized; 18,572 shares issued	27,858	27,858
Additional paid-in capital	678	1,165
Accumulated other comprehensive loss	(76)	(79)
Retained earnings	658	6,516
Total common shareholders' equity	29,118	35,460
Treasury stock (972 and 1,026 shares), at cost	(6,388)	(7,189)
Total shareholders' equity	22,730	28,271
Total liabilities and shareholders' equity	$ 119,309	$ 123,639