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INCOME TAXES (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Mar. 31, 2018
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Operating Loss Carryforwards [Line Items]          
Deferred income taxes     $ 79 $ 384  
Deferred tax liabilities, goodwill $ 1,230   1,230    
Federal net operating loss carryforwards         $ 101,200
Tax credit carryforward amount 3,804   3,804    
Refundable amount 1,902   1,902    
Current income tax expense (benefit) (475)   (1,426)    
Deferred income tax provisions 475   1,426    
Goodwill          
Operating Loss Carryforwards [Line Items]          
Deferred income taxes $ 406 $ (1,635) $ (1,230)