Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
CURRENT ASSETS
Cash and cash equivalents	$ 79,476	$ 17,303
Trade receivables, net	70,460	77,034
Prepaid tires	9,399	10,160
Prepaid shop supplies	1,429	2,056
Other current assets	16,482	8,992
Income tax receivable	2,900	19,920
Deferred income taxes, net	16,536	14,767
Total current assets	196,682	150,232
PROPERTY AND EQUIPMENT
Land and land improvements	24,787	22,463
Buildings	39,548	34,151
Leasehold improvements	6,509	8,033
Furniture and fixtures	2,096	2,096
Shop and service equipment	10,691	10,820
Revenue equipment	583,275	600,335
Construction in progress	341	668
Property, Plant and Equipment, Gross	667,247	678,566
Less accumulated depreciation	208,124	198,007
Property and equipment, net	459,123	480,559
GOODWILL	100,212	100,212
OTHER INTANGIBLES, NET	15,148	16,380
OTHER ASSETS	10,929	12,611
Assets	782,094	759,994
CURRENT LIABILITIES
Accounts payable and accrued liabilities	16,834	8,261
Compensation and benefits	28,262	26,303
Insurance accruals	19,353	19,249
Other accruals	13,475	14,475
Total current liabilities	77,924	68,288
LONG-TERM LIABILITIES
Income taxes payable	15,498	18,296
Long-term debt	0	24,600
Deferred income taxes, net	101,311	101,605
Insurance accruals less current portion	60,998	59,300
Other long-term liabilities	11,653	11,318
Total long-term liabilities	$ 189,460	$ 215,119
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 2015 and 2014; outstanding 87,862 in 2015 and 87,781 in 2014, respectively	907	907
Additional paid-in capital	3,734	4,058
Retained earnings	547,243	509,834
Treasury stock, at cost; 2,827 shares in 2015 and 2,908 in 2014, respectively	(37,174)	(38,212)
Stockholders' Equity Attributable to Parent	514,710	476,587
Liabilities and Stockholders' Equity	$ 782,094	$ 759,994