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INCOME TAXES (Provision) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Current provision (benefit): |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | $ (604) | $ 9,156 | $ 18,063
State |  |  |  |  |  |  |  |  | (335) | 165 | 23
Foreign |  |  |  |  |  |  |  |  | 1,052 | 2,124 | 1,657
Current tax provision |  |  |  |  |  |  |  |  | 113 | 11,445 | 19,743
Deferred provision (benefit): |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | 8,161 | 12,914 | 1,575
State |  |  |  |  |  |  |  |  | 1,354 | 3,589 | 3,366
Foreign |  |  |  |  |  |  |  |  | 7 | (68) | (249)
Deferred tax provision |  |  |  |  |  |  |  |  | 9,522 | 16,435 | 4,692
Total provision (benefit) for income taxes | $ (488) | $ 7,615 | $ 6,150 | $ (3,642) | $ 1,878 | $ 12,892 | $ 12,942 | $ 167 | 9,635 | 27,880 | 24,435
Components of the deferred tax provision or benefit |  |  |  |  |  |  |  |  |  |  |
Amortization, depreciation, and basis differences for property, plant and equipment and other long-lived assets |  |  |  |  |  |  |  |  | 12,182 | 21,098 | 3,579
Amortization of intangibles |  |  |  |  |  |  |  |  | (3,623) | (3,184) | (2,934)
Changes in reserves for workers’ compensation, third-party casualty, and cargo claims |  |  |  |  |  |  |  |  | 362 | (674) | (1,970)
Revenue recognition |  |  |  |  |  |  |  |  | 1,862 | 7 | 361
Allowance for doubtful accounts |  |  |  |  |  |  |  |  | (295) | 307 | (501)
Foreign tax credit carryforward utilized |  |  |  |  |  |  |  |  |  | 434 | 665
Nonunion pension and other retirement plans |  |  |  |  |  |  |  |  | 3,861 | (234) | (1,595)
Deferred compensation plans |  |  |  |  |  |  |  |  | 203 | 541 | 350
Federal net operating loss carryforwards utilized |  |  |  |  |  |  |  |  | 161 | 70 | 4,472
State net operating loss carryforwards utilized (generated) |  |  |  |  |  |  |  |  | (304) | 623 | 2,812
State depreciation adjustments |  |  |  |  |  |  |  |  | (758) | (657) | (539)
Share-based compensation |  |  |  |  |  |  |  |  | (681) | (621) | 959
Valuation allowance increase (decrease) |  |  |  |  |  |  |  |  | (61) | 22 | (696)
Leases |  |  |  |  |  |  |  |  | (1) | (969) | 237
Other accrued expenses |  |  |  |  |  |  |  |  | (4,108) | 1,256 | (362)
Other |  |  |  |  |  |  |  |  | 722 | (1,584) | (146)
Deferred tax provision |  |  |  |  |  |  |  |  | $ 9,522 | $ 16,435 | $ 4,692

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