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STOCKHOLDERS' EQUITY (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at beginning of period $ (454)  
Balance at end of period (545)  
Accumulated Net Unrealized Investment Gain (Loss)    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at beginning of period (454) $ (30)
Other comprehensive loss before reclassifications (91) (34)
Amounts reclassified from accumulated other comprehensive income (loss) 0 0
Balance at end of period $ (545) $ (64)