Consolidated Condensed Balance Sheets (unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current assets
Cash and cash equivalents	$ 1,826	$ 1,048
Accounts receivable, net	41,478	43,450
Tires on equipment in use, net	6,573	5,968
Equipment held for sale	2,282	3,437
Other current assets	9,031	7,868
Total current assets	61,190	61,771
Property and equipment, net	50,601	57,757
Deferred income taxes	1,009	1,009
Other assets	5,814	5,867
Total assets	118,614	126,404
Current liabilities
Accounts payable	26,441	30,339
Insurance and claims accruals	8,719	10,667
Accrued payroll and deferred compensation	3,802	4,047
Accrued liabilities	1,205	1,251
Current maturities of notes payable and capital lease obligations	2,027	1,936
Deferred income taxes	690	690
Total current liabilities	42,884	48,930
Borrowings under credit facility	24,259	19,888
Long-term notes payable and capital lease obligations	7,890	8,901
Insurance and claims accruals	5,083	5,783
Total liabilities	80,116	83,502
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	666	427
Accumulated other comprehensive loss	(63)	(67)
Retained earnings	16,994	21,572
Total common shareholders' equity	45,455	49,790
Treasury stock (988 and 980 shares), at cost	(6,957)	(6,888)
Total shareholders' equity	38,498	42,902
Total liabilities and shareholders' equity	$ 118,614	$ 126,404