Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
CURRENT ASSETS
Cash and cash equivalents	$ 64,165	$ 17,303
Trade receivables, net	64,519	77,034
Prepaid tires	9,673	10,160
Prepaid shop supplies	561	2,056
Other current assets	24,379	8,992
Income tax receivable	4,651	19,920
Deferred income taxes, net	17,219	14,767
Total current assets	185,167	150,232
PROPERTY AND EQUIPMENT
Land and land improvements	24,597	22,463
Buildings	39,548	34,151
Leasehold improvements	6,509	8,033
Furniture and fixtures	2,096	2,096
Shop and service equipment	10,946	10,820
Revenue equipment	584,712	600,335
Construction in progress	177	668
Property, Plant and Equipment, Gross	668,585	678,566
Less accumulated depreciation	212,179	198,007
Property and equipment, net	456,406	480,559
GOODWILL	100,212	100,212
OTHER INTANGIBLES, NET	14,558	16,380
OTHER ASSETS	11,116	12,611
Assets	767,459	759,994
CURRENT LIABILITIES
Accounts payable and accrued liabilities	24,720	8,261
Compensation and benefits	28,486	26,303
Insurance accruals	19,906	19,249
Other accruals	12,411	14,475
Total current liabilities	85,523	68,288
LONG-TERM LIABILITIES
Income taxes payable	15,804	18,296
Long-term debt	0	24,600
Deferred income taxes, net	99,489	101,605
Insurance accruals less current portion	61,843	59,300
Other long-term liabilities	12,153	11,318
Total long-term liabilities	$ 189,289	$ 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 86,097 in 2015 and 87,781 in 2014, respectively	907	907
Additional paid-in capital	3,942	4,058
Retained earnings	560,621	509,834
Treasury stock, at cost; 4,592 shares in 2015 and 2,908 in 2014, respectively	(72,823)	(38,212)
Stockholders' Equity Attributable to Parent	492,647	476,587
Liabilities and Stockholders' Equity	$ 767,459	$ 759,994