Consolidated Condensed Balance Sheets (unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Current assets
Cash and cash equivalents	$ 1,478	$ 1,048
Accounts receivable, net	40,422	43,450
Tires on equipment in use, net	5,780	5,968
Equipment held for sale	0	3,437
Other current assets	4,997	7,868
Total current assets	52,677	61,771
Property and equipment, net	53,759	57,757
Deferred income taxes	1,009	1,009
Other assets	6,023	5,867
Total assets	113,468	126,404
Current liabilities
Accounts payable	20,564	30,339
Insurance and claims accruals	9,325	10,667
Accrued payroll and deferred compensation	4,195	4,047
Accrued liabilities	1,006	1,251
Current maturities of notes payable and capital lease obligations	1,993	1,936
Deferred income taxes	690	690
Total current liabilities	37,773	48,930
Borrowings under credit facility	24,241	19,888
Long-term notes payable and capital lease obligations	8,409	8,901
Insurance and claims accruals	5,715	5,783
Total liabilities	76,138	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	463	427
Accumulated other comprehensive loss	(67)	(67)
Retained earnings	15,923	21,572
Total common shareholders' equity	44,177	49,790
Treasury stock (972 and 980 shares), at cost	(6,847)	(6,888)
Total shareholders' equity	37,330	42,902
Total liabilities and shareholders' equity	$ 113,468	$ 126,404