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INCOME TAXES (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Income Tax Disclosure [Abstract]          
Provision for income taxes $ 2,841 $ 2,396 $ 3,738 $ 5,964  
Effective Income Tax Rate, Continuing Operations 51.00% (27.00%) 12.00% (27.00%)  
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent     21.00%   35.00%