Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
CURRENT ASSETS
Cash and cash equivalents	$ 55,506	$ 49,462
Trade receivables, net of $3.2 and $3.3 million allowance in 2023 and 2022, respectively	126,170	139,819
Prepaid tires	10,862	11,293
Other current assets	19,774	26,069
Income tax receivable	0	3,139
Total current assets	212,312	229,782
PROPERTY AND EQUIPMENT
Land and land improvements	94,539	94,155
Buildings	144,022	143,899
Furniture and fixtures	6,947	6,946
Shop and service equipment	21,598	21,652
Revenue equipment	990,523	1,000,472
Construction in progress	22,286	15,070
Property and equipment, gross	1,279,915	1,282,194
Less accumulated depreciation	341,509	308,936
Property and equipment, net	938,406	973,258
GOODWILL	320,675	320,675
OTHER INTANGIBLES, NET	102,410	103,701
OTHER ASSETS	19,642	19,894
Deferred Income Taxes, Net	1,488	1,224
OPERATING LEASE RIGHT OF USE ASSETS	17,577	20,954
Assets	1,612,510	1,669,488
CURRENT LIABILITIES
Accounts payable and accrued liabilities	47,492	62,712
Compensation and benefits	31,549	30,972
Insurance accruals	17,635	18,490
Long-term debt and finance lease liabilities - current portion	13,307	13,946
Operating lease liabilities - current portion	10,885	12,001
Other accruals	16,088	18,636
Income tax payable	9,608	0
Total current liabilities	146,564	156,757
LONG-TERM LIABILITIES
Income taxes payable	6,569	6,466
Long-term debt and finance lease liabilities less current portion	352,645	399,062
Operating lease liabilities less current portion	6,692	8,953
Deferred income taxes, net	199,121	207,516
Insurance accruals	34,300	35,257
Total long-term liabilities	599,327	657,254
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 2023 and 2022; outstanding 78,989 and 78,984 in 2023 and 2022, respectively	907	907
Additional paid-in capital	4,197	4,165
Retained earnings	1,062,672	1,051,641
Treasury stock, at cost; 11,700 and 11,705 in 2023 and 2022, respectively	(201,157)	(201,236)
Stockholders' Equity	866,619	855,477
Liabilities and Stockholders' Equity	$ 1,612,510	$ 1,669,488