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BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Recently Adopted Accounting Standards [Abstract]    
Retained earnings $ 165,518 $ 147,807
ASU 2014-09 [Member]    
Recently Adopted Accounting Standards [Abstract]    
Retained earnings   151,256
Adjustments Due to ASC 606 [Member] | ASU 2014-09 [Member]    
Recently Adopted Accounting Standards [Abstract]    
Retained earnings $ 4,129 $ 3,449