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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
CURRENT ASSETS |  |
Cash and cash equivalents | $ 181,731 | $ 190,186
Short-term investments | 117,657 | 106,806
Accounts receivable, less allowances (2019 - $6,238; 2018 - $7,380) | 296,090 | 297,051
Other accounts receivable, less allowances (2019 - $463; 2018 - $806) | 17,207 | 19,146
Prepaid expenses | 28,546 | 25,304
Prepaid and refundable income taxes | 5,237 | 1,726
Other | 4,982 | 9,007
TOTAL CURRENT ASSETS | 651,450 | 649,226
PROPERTY, PLANT AND EQUIPMENT |  |
Land and structures | 339,255 | 339,640
Revenue equipment | 888,588 | 858,251
Service, office, and other equipment | 218,131 | 199,230
Software | 143,181 | 138,517
Leasehold improvements | 10,058 | 9,365
TOTAL PROPERTY, PLANT AND EQUIPMENT, GROSS | 1,599,213 | 1,545,003
Less allowances for depreciation and amortization | 947,264 | 913,815
PROPERTY, PLANT AND EQUIPMENT, net | 651,949 | 631,188
GOODWILL | 108,320 | 108,320
INTANGIBLE ASSETS, net | 66,700 | 68,949
OPERATING RIGHT-OF-USE ASSETS | 68,810 |
DEFERRED INCOME TAXES | 6,296 | 7,468
OTHER LONG-TERM ASSETS | 80,402 | 74,080
TOTAL ASSETS | 1,633,927 | 1,539,231
CURRENT LIABILITIES |  |
Accounts payable | 166,829 | 143,785
Income taxes payable | 1,942 | 1,688
Accrued expenses | 228,994 | 243,111
Current portion of long-term debt | 47,205 | 54,075
Current portion of operating lease liabilities | 18,273 |
Current portion of pension and postretirement liabilities | 8,231 | 8,659
TOTAL CURRENT LIABILITIES | 471,474 | 451,318
LONG-TERM DEBT, less current portion | 235,001 | 237,600
OPERATING LEASE LIABILITIES, less current portion | 54,040 |
PENSION AND POSTRETIREMENT LIABILITIES, less current portion | 31,874 | 31,504
OTHER LONG-TERM LIABILITIES | 37,268 | 44,686
DEFERRED INCOME TAXES | 61,111 | 56,441
STOCKHOLDERS' EQUITY |  |
Common stock, $0.01 par value, authorized 70,000,000 shares; issued 2019: 28,786,473 shares, 2018: 28,684,779 shares | 288 | 287
Additional paid-in capital | 329,388 | 325,712
Retained earnings | 526,551 | 501,389
Treasury stock, at cost, 2019: 3,266,169 shares; 2018: 3,097,634 shares | (100,639) | (95,468)
Accumulated other comprehensive loss | (12,429) | (14,238)
TOTAL STOCKHOLDERS' EQUITY | 743,159 | 717,682
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | $ 1,633,927 | $ 1,539,231

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