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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
CURRENT ASSETS    
Cash and cash equivalents $ 267,645 $ 201,909
Short-term investments 83,411 116,579
Accounts receivable, less allowances (2020 - $7,343; 2019 - $5,448) 323,760 282,579
Other accounts receivable, less allowances (2020 - $665; 2019 - $476) 14,464 18,774
Prepaid expenses 29,562 30,377
Prepaid and refundable income taxes 6,163 9,439
Other 5,235 4,745
TOTAL CURRENT ASSETS 730,240 664,402
PROPERTY, PLANT AND EQUIPMENT    
Land and structures 346,322 342,122
Revenue equipment 912,924 896,020
Service, office, and other equipment 233,689 233,354
Software 158,454 151,068
Leasehold improvements 14,064 10,383
TOTAL PROPERTY, PLANT AND EQUIPMENT, Gross 1,665,453 1,632,947
Less allowances for depreciation and amortization 987,396 949,355
PROPERTY, PLANT AND EQUIPMENT, net 678,057 683,592
GOODWILL 88,320 88,320
INTANGIBLE ASSETS, net 56,016 58,832
OPERATING RIGHT-OF-USE ASSETS 112,568 68,470
DEFERRED INCOME TAXES 6,975 7,725
OTHER LONG-TERM ASSETS 74,055 79,866
TOTAL ASSETS 1,746,231 1,651,207
CURRENT LIABILITIES    
Accounts payable 162,021 134,374
Income taxes payable 5 12
Accrued expenses 249,172 232,321
Current portion of long-term debt 65,887 57,305
Current portion of operating lease liabilities 20,431 20,265
TOTAL CURRENT LIABILITIES 497,516 444,277
LONG-TERM DEBT, less current portion 226,037 266,214
OPERATING LEASE LIABILITIES, less current portion 96,549 52,277
POSTRETIREMENT LIABILITIES, less current portion 20,486 20,294
OTHER LONG-TERM LIABILITIES 35,377 38,892
DEFERRED INCOME TAXES 67,627 66,210
STOCKHOLDERS' EQUITY    
Common stock, $0.01 par value, authorized 70,000,000 shares; issued 2020: 29,039,994 shares, 2019: 28,810,902 shares 290 288
Additional paid-in capital 339,908 333,943
Retained earnings 574,053 533,187
Treasury stock, at cost, 2020: 3,632,099 shares; 2019: 3,404,639 shares (110,245) (104,578)
Accumulated other comprehensive income (loss) (1,367) 203
TOTAL STOCKHOLDERS' EQUITY 802,639 763,043
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 1,746,231 $ 1,651,207