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INCOME TAXES - Reconciliation Of Unrecognized Tax Benefits (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Taxes      
Beginning balance $ 869 $ 892 $ 1,008
Additions on tax positions of prior years   106  
Lapses of applicable statute of limitations (185) (129) (116)
Ending balance $ 684 $ 869 $ 892