Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
CURRENT ASSETS
Cash and cash equivalents	$ 23,323	$ 17,763
Trade receivables, net	87,235	84,400
Prepaid tires	10,089	6,999
Prepaid shop supplies	2,264	4,194
Other current assets	13,973	11,061
Income tax receivable	0	5,706
Deferred income taxes, net	14,990	14,177
Total current assets	151,874	144,300
PROPERTY AND EQUIPMENT
Land and land improvements	22,343	17,069
Buildings	33,316	27,347
Leasehold improvements	8,033	16,134
Furniture and fixtures	2,096	1,829
Shop and service equipment	10,794	10,604
Revenue equipment	568,035	549,415
Construction in progress	662	466
Property, Plant and Equipment, Gross	645,279	622,864
Less accumulated depreciation	182,842	173,605
Property and equipment, net	462,437	449,259
GOODWILL	100,212	98,686
OTHER INTANGIBLES, NET	16,971	18,746
OTHER ASSETS	20,127	13,850
Assets	751,621	724,841
CURRENT LIABILITIES
Accounts payable and accrued liabilities	35,733	26,912
Compensation and benefits	27,794	28,084
Insurance accruals	19,811	20,945
Other accruals	15,095	12,627
Income taxes payable	1,993	0
Total current liabilities	100,426	88,568
LONG-TERM LIABILITIES
Income taxes payable	17,963	20,089
Long-term debt	21,000	75,000
Deferred income taxes, net	78,103	61,948
Insurance accruals less current portion	66,790	67,965
Other long-term liabilities	10,984	13,618
Total long-term liabilities	194,840	238,620
COMMITMENTS AND CONTINGENCIES (Note 14)
STOCKHOLDERS' EQUITY
Preferred stock, par value $.01; authorized 5,000 shares; none issued	0	0
Capital stock, common, $.01 par value; authorized 395,000 shares; issued 90,689 in 2014 and 2013; outstanding 87,779 in 2014 and 87,705 in 2013, respectively	907	907
Additional paid-in capital	3,638	5,897
Retained earnings	490,048	432,034
Treasury stock, at cost; 2,910 shares in 2014 and 2,984 in 2013, respectively	(38,238)	(41,185)
Stockholders' Equity Attributable to Parent	456,355	397,653
Liabilities and Stockholders' Equity	$ 751,621	$ 724,841