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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
CURRENT ASSETS |  |
Cash and cash equivalents | $ 124,652 | $ 120,772
Short-term investments | 54,669 | 56,401
Accounts receivable, less allowances (2018 – $7,837; 2017 – $7,657) | 289,366 | 279,074
Other accounts receivable, less allowances (2018 – $936; 2017 – $921) | 19,262 | 19,491
Prepaid expenses | 24,891 | 22,183
Prepaid and refundable income taxes | 10,267 | 12,296
Other | 9,029 | 12,132
TOTAL CURRENT ASSETS | 532,136 | 522,349
PROPERTY, PLANT AND EQUIPMENT |  |
Land and structures | 338,346 | 344,224
Revenue equipment | 790,685 | 793,523
Service, office, and other equipment | 189,055 | 179,950
Software | 132,088 | 129,589
Leasehold improvements | 8,948 | 8,888
TOTAL PROPERTY, PLANT AND EQUIPMENT, GROSS | 1,459,122 | 1,456,174
Less allowances for depreciation and amortization | 884,959 | 865,010
PROPERTY, PLANT AND EQUIPMENT, net | 574,163 | 591,164
GOODWILL | 108,320 | 108,320
INTANGIBLE ASSETS, net | 72,336 | 73,469
DEFERRED INCOME TAXES | 6,095 | 5,965
OTHER LONG-TERM ASSETS | 65,033 | 64,374
TOTAL ASSETS | 1,358,083 | 1,365,641
CURRENT LIABILITIES |  |
Accounts payable | 139,830 | 129,099
Income taxes payable | 93 | 324
Accrued expenses | 202,656 | 211,237
Current portion of long-term debt | 56,057 | 61,930
TOTAL CURRENT LIABILITIES | 398,636 | 402,590
LONG-TERM DEBT, less current portion | 196,425 | 206,989
PENSION AND POSTRETIREMENT LIABILITIES | 36,984 | 39,827
OTHER LONG-TERM LIABILITIES | 12,320 | 15,616
DEFERRED INCOME TAXES | 48,244 | 49,157
STOCKHOLDERS' EQUITY |  |
Common stock, $0.01 par value, authorized 70,000,000 shares; issued 2018: 28,498,971 shares; 2017: 28,495,628 shares | 285 | 285
Additional paid-in capital | 321,265 | 319,436
Retained earnings | 450,267 | 438,379
Treasury stock, at cost, 2018: 2,857,460 shares; 2017: 2,851,578 shares | (86,265) | (86,064)
Accumulated other comprehensive loss | (20,078) | (20,574)
TOTAL STOCKHOLDERS' EQUITY | 665,474 | 651,462
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | $ 1,358,083 | $ 1,365,641

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