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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
CURRENT ASSETS    
Cash and cash equivalents $ 158,372 $ 76,620
Short-term investments 167,662 48,339
Accounts receivable, less allowances (2022 - $14,172; 2021 - $13,226) 580,515 582,344
Other accounts receivable, less allowances (2022 - $713; 2021 - $690) 11,867 13,094
Prepaid expenses 40,240 40,104
Prepaid and refundable income taxes 19,239 9,654
Other 11,888 5,898
TOTAL CURRENT ASSETS 989,783 776,053
PROPERTY, PLANT AND EQUIPMENT    
Land and structures 406,620 350,694
Revenue equipment 1,038,832 980,283
Service, office, and other equipment 302,891 251,085
Software 180,929 175,989
Leasehold improvements 23,466 16,931
TOTAL PROPERTY, PLANT AND EQUIPMENT, Gross 1,952,738 1,774,982
Less allowances for depreciation and amortization 1,142,218 1,079,061
PROPERTY, PLANT AND EQUIPMENT, net 810,520 695,921
GOODWILL 305,382 300,337
INTANGIBLE ASSETS, net 113,796 126,580
OPERATING RIGHT-OF-USE ASSETS 166,515 106,686
DEFERRED INCOME TAXES 6,342 5,470
OTHER LONG-TERM ASSETS 101,948 101,629
TOTAL ASSETS 2,494,286 2,112,676
CURRENT LIABILITIES    
Accounts payable 317,541 311,401
Income taxes payable 16,630 12,087
Accrued expenses 341,822 305,851
Current portion of long-term debt 66,252 50,615
Current portion of operating lease liabilities 26,225 22,740
TOTAL CURRENT LIABILITIES 768,470 702,694
LONG-TERM DEBT, less current portion 198,371 174,917
OPERATING LEASE LIABILITIES, less current portion 147,828 88,835
POSTRETIREMENT LIABILITIES, less current portion 12,196 16,733
OTHER LONG-TERM LIABILITIES 154,745 135,537
DEFERRED INCOME TAXES 61,275 64,893
STOCKHOLDERS' EQUITY    
Common stock, $0.01 par value, authorized 70,000,000 shares; issued 2022: 29,758,716 shares, 2021: 29,359,597 shares 298 294
Additional paid-in capital 339,582 318,033
Retained earnings 1,088,693 801,314
Treasury stock, at cost, 2022: 5,529,383 shares; 2021: 4,492,514 shares (284,275) (194,273)
Accumulated other comprehensive income 7,103 3,699
TOTAL STOCKHOLDERS' EQUITY 1,151,401 929,067
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 2,494,286 $ 2,112,676