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INCOME TAXES AND RELATED PAYMENTS - Components of Income Tax Expense (Benefit) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Current:      
U.S. federal income tax $ 1,478 $ 4,128 $ 5,516
State and local income tax 1,650 (372) 5,148
Foreign income tax 2,621 2,245 3,195
Current: 5,749 6,001 13,859
Deferred:      
U.S. federal income tax 11,306 12,544 11,253
State and local income tax 786 1,836 1,120
Foreign income tax (292) (1,845) 0
Deferred: 11,800 12,535 12,373
Total:      
U.S. federal income tax 12,784 16,672 16,769
State and local income tax 2,436 1,464 6,268
Foreign income tax 2,329 400 3,195
Income tax expense $ 17,549 $ 18,536 $ 26,232