Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets
Cash and cash equivalents	$ 2,907	$ 1,048
Accounts receivable, net	40,069	43,450
Tires on equipment in use, net	8,176	5,968
Equipment held for sale	832	3,437
Other current assets	7,840	7,868
Total current assets	59,824	61,771
Property and equipment, net	54,680	57,757
Deferred income taxes	3,039	1,009
Other assets	6,096	5,867
Total assets	123,639	126,404
Current liabilities
Accounts payable	26,178	30,339
Insurance and claims accruals	10,033	10,667
Accrued payroll and deferred compensation	3,951	4,047
Accrued liabilities	1,429	1,251
Current maturities of notes payable and capital lease obligations	3,040	1,936
Deferred income taxes	2,727	690
Total current liabilities	47,358	48,930
Long-term debt	26,215	19,888
Long-term notes payable and capital lease obligations	16,891	8,901
Insurance and claims accruals	4,904	5,783
Total liabilities	95,368	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	1,165	427
Accumulated other comprehensive loss	(79)	(67)
Retained earnings	6,516	21,572
Total common shareholders' equity	35,460	49,790
Treasury stock (1,026 and 980 shares), at cost	(7,189)	(6,888)
Total shareholders' equity	28,271	42,902
Total liabilities and shareholders' equity	$ 123,639	$ 126,404