Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Jul. 06, 2017	Dec. 31, 2016
CURRENT ASSETS
Cash and cash equivalents	$ 75,378		$ 128,507
Trade receivables, net	64,293		46,844
Prepaid tires	10,989		8,181
Other current assets	13,782	$ 2,426	13,841
Income tax receivable	6,393		4,738
Total current assets	170,835		202,111
PROPERTY AND EQUIPMENT
Land and land improvements	40,283		39,356
Buildings	48,657		48,371
Leasehold improvements	2,208		1,703
Furniture and fixtures	3,437		2,096
Shop and service equipment	12,202		11,009
Revenue equipment	555,980		556,464
Construction in progress	3,996		54
Property and equipment, gross	666,763		659,053
Less accumulated depreciation	223,901		251,405
Property and equipment, net	442,862	71,964	407,648
Goodwill	132,410	32,198	100,212
OTHER INTANGIBLES, NET	17,022		12,090
Deferred Income Tax Assets, Net	1,737		3,785
OTHER ASSETS	24,261	1,244	12,382
Assets	789,127	157,079	738,228
CURRENT LIABILITIES
Accounts payable and accrued liabilities	14,366		12,355
Compensation and benefits	26,752		23,320
Insurance accruals	21,368		19,132
Other accruals	12,835	$ 596	10,727
Total current liabilities	75,321		65,534
LONG-TERM LIABILITIES
Income taxes payable	8,147		11,954
Deferred income taxes, net	65,488		94,657
Insurance accruals less current portion	65,526		60,257
Total long-term liabilities	139,161		166,868
COMMITMENTS AND CONTINGENCIES (Note 13)
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 2017 and 2016; outstanding 83,303 and 83,287 in 2017 and 2016, respectively	907		907
Additional paid-in capital	3,518		3,433
Retained earnings	694,174		625,668
Treasury stock, at cost; 7,386 and 7,402 shares in 2017 and 2016, respectively	(123,954)		(124,182)
Stockholders' Equity Attributable to Parent	574,645		505,826
Liabilities and Stockholders' Equity	$ 789,127		$ 738,228