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PROPERTY AND EQUIPMENT - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Abstract]    
Depreciation $ 2,370 $ 2,181
Property and equipment useful life 3 years  
Capitalized software development costs $ 2,756 $ 2,711