Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
CURRENT ASSETS
Cash and cash equivalents	$ 111,934	$ 161,448
Trade receivables, net of allowance of $1.0 million and $0.9 million	60,645	48,955
Prepaid tires	10,441	9,378
Other current assets	15,353	12,551
Income tax receivable	0	170
Total current assets	198,373	232,502
PROPERTY AND EQUIPMENT
Land and land improvements	59,561	46,095
Buildings	68,864	57,505
Leasehold improvements	437	437
Furniture and fixtures	3,997	3,057
Shop and service equipment	13,335	10,968
Revenue equipment	587,058	479,068
Construction in progress	4,376	6,540
Property, Plant and Equipment, Gross	737,628	603,670
Less accumulated depreciation	203,971	200,550
Property and equipment, net	533,657	403,120
GOODWILL	165,021	132,410
OTHER INTANGIBLES, NET	27,886	14,494
Deferred Income Taxes, Net	5,743	4,535
OTHER ASSETS	18,363	19,152
Assets	949,043	806,213
CURRENT LIABILITIES
Accounts payable and accrued liabilities	16,277	10,552
Compensation and benefits	24,357	22,558
Insurance accruals	21,441	22,130
Long-term Debt, Current Maturities	14,275	0
Other accruals	9,521	9,449
Accrued Income Taxes, Current	923	0
Total current liabilities	86,794	64,689
LONG-TERM LIABILITIES
Income taxes payable	5,745	5,577
Long-term Debt	39,186	0
Deferred income taxes, net	95,153	71,041
Insurance accruals less current portion	49,030	48,934
Total long-term liabilities	189,114	125,552
COMMITMENTS AND CONTINGENCIES (Note 16)
STOCKHOLDERS' EQUITY
Preferred stock, par value $.01; authorized 5,000 shares; none issued
Capital stock, common, $.01 par value; authorized 395,000 shares; issued 90,689 in 2019 and 2018; outstanding 82,016 in 2019 and 81,930 in 2018	907	907
Additional paid-in capital	3,945	3,454
Retained earnings	815,520	760,262
Treasury stock, at cost; 8,673 shares in 2019 and 8,759 in 2018	(147,237)	(148,651)
Stockholders' Equity Attributable to Parent	673,135	615,972
Liabilities and Stockholders' Equity	$ 949,043	$ 806,213