STOCKHOLDERS' EQUITY - CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	$ 138	$ 116
Amounts reclassified from accumulated other comprehensive income	(6)	16
Net current period other comprehensive income	(6)	16
Ending balance	132	132
Unrealized Gains & Losses on Available for Sale Securities
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	16	(6)
Amounts reclassified from accumulated other comprehensive income	(6)	16
Net current period other comprehensive income	(6)	16
Ending balance	10	10
Foreign Currency Items
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	122	122
Amounts reclassified from accumulated other comprehensive income	0	0
Net current period other comprehensive income	0	0
Ending balance	$ 122	$ 122