Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
CURRENT ASSETS
Cash and cash equivalents	$ 49,462	$ 157,742
Trade receivables, net	139,819	52,812
Prepaid tires	11,293	9,168
Other current assets	26,069	9,406
Income tax receivable	3,139	4,095
Total current assets	229,782	233,223
PROPERTY AND EQUIPMENT
Land and land improvements	94,155	90,218
Buildings	143,899	95,305
Furniture and fixtures	6,946	5,365
Shop and service equipment	21,652	15,727
Revenue equipment	1,000,472	500,311
Construction in progress	15,070	3,834
Property and equipment, gross	1,282,194	710,760
Less accumulated depreciation	308,936	222,845
Property and equipment, net	973,258	487,915
GOODWILL	320,675	168,295
OTHER INTANGIBLES, NET	103,701	22,355
DEFERRED INCOME TAX ASSETS, NET	1,224	0
OTHER ASSETS	19,894	16,754
OPERATING LEASE RIGHT OF USE ASSETS	20,954	0
Assets	1,669,488	928,542
CURRENT LIABILITIES
Accounts payable and accrued liabilities	62,712	20,538
Compensation and benefits	30,972	21,411
Insurance accruals	18,490	15,677
Long-term debt and finance lease liabilities - current portion	13,946	0
Operating lease liabilities - current portion	12,001	0
Other accruals	18,636	13,968
Total current liabilities	156,757	71,594
LONG-TERM LIABILITIES
Income taxes payable	6,466	5,491
Long-term debt and finance lease liabilities less current portion	399,062	0
Operating lease liabilities less current portion	8,953	0
Deferred income taxes, net	207,516	89,971
Accident and work comp accruals less current portion	35,257	34,384
Total long-term liabilities	657,254	129,846
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 2022 and 2021; outstanding 78,984 and 78,923 in 2022 and 2021, respectively	907	907
Additional paid-in capital	4,165	4,141
Retained earnings	1,051,641	924,375
Treasury stock, at cost; 11,705 and 11,766 shares in 2022 and 2021, respectively	(201,236)	(202,321)
Stockholders' Equity Attributable to Parent	855,477	727,102
Liabilities and Stockholders' Equity	$ 1,669,488	$ 928,542