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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
CURRENT ASSETS |  |
Cash and cash equivalents | $ 159,307 | $ 120,772
Short-term investments | 68,013 | 56,401
Accounts receivable, less allowances (2018 – $8,057; 2017 – $7,657) | 309,112 | 279,074
Other accounts receivable, less allowances (2018 – $952; 2017 – $921) | 19,548 | 19,491
Prepaid expenses | 19,912 | 22,183
Prepaid and refundable income taxes | 4,665 | 12,296
Other | 9,509 | 12,132
TOTAL CURRENT ASSETS | 590,066 | 522,349
PROPERTY, PLANT AND EQUIPMENT |  |
Land and structures | 338,902 | 344,224
Revenue equipment | 818,674 | 793,523
Service, office, and other equipment | 190,109 | 179,950
Software | 131,139 | 129,589
Leasehold improvements | 9,131 | 8,888
TOTAL PROPERTY, PLANT AND EQUIPMENT, GROSS | 1,487,955 | 1,456,174
Less allowances for depreciation and amortization | 896,738 | 865,010
PROPERTY, PLANT AND EQUIPMENT, net | 591,217 | 591,164
GOODWILL | 108,320 | 108,320
INTANGIBLE ASSETS, net | 71,206 | 73,469
DEFERRED INCOME TAXES | 6,226 | 5,965
OTHER LONG-TERM ASSETS | 65,261 | 64,374
TOTAL ASSETS | 1,432,296 | 1,365,641
CURRENT LIABILITIES |  |
Accounts payable | 176,034 | 129,099
Income taxes payable | 511 | 324
Accrued expenses | 221,880 | 211,237
Current portion of long-term debt | 51,562 | 61,930
TOTAL CURRENT LIABILITIES | 449,987 | 402,590
LONG-TERM DEBT, less current portion | 198,070 | 206,989
PENSION AND POSTRETIREMENT LIABILITIES | 36,169 | 39,827
OTHER LONG-TERM LIABILITIES | 38,456 | 15,616
DEFERRED INCOME TAXES | 41,099 | 49,157
STOCKHOLDERS' EQUITY |  |
Common stock, $0.01 par value, authorized 70,000,000 shares; issued 2018: 28,541,578 shares; 2017: 28,495,628 shares | 285 | 285
Additional paid-in capital | 322,895 | 319,436
Retained earnings | 449,442 | 438,379
Treasury stock, at cost, 2018: 2,857,460 shares; 2017: 2,851,578 shares | (86,265) | (86,064)
Accumulated other comprehensive loss | (17,842) | (20,574)
TOTAL STOCKHOLDERS' EQUITY | 668,515 | 651,462
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | $ 1,432,296 | $ 1,365,641

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- Definition Gross amount as of the balance sheet date of real estate held for productive use and long-lived depreciable assets that include building structures held for productive use including any addition, improvement, or renovation to the structure, such as interior masonry, interior flooring, electrical, and plumbing. + References No definition available. + Details
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