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INCOME TAXES (Uncertain Income Tax Positions) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Unrecognized Tax Benefits [Roll Forward]      
Unrecognized, January 1, $ 2,962 $ 2,215 $ 3,502
Additions based on tax positions taken in current year 1,193 888 561
Reductions based on tax positions taken in prior year 0 (141) (1,848)
Unrecognized, December 31, $ 4,155 $ 2,962 $ 2,215