STOCKHOLDERS' EQUITY - CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Balance as December 31, 2018	$ 122	$ 116
Amounts reclassified from accumulated other comprehensive income	16	22
Net current period other comprehensive income	16	22
Ending balance	138	138
Unrealized Gains & Losses on Available for Sale Securities
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Balance as December 31, 2018	0	(6)
Amounts reclassified from accumulated other comprehensive income	16	22
Net current period other comprehensive income	16	22
Ending balance	16	16
Foreign Currency Items
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Balance as December 31, 2018	122	122
Amounts reclassified from accumulated other comprehensive income	0	0
Net current period other comprehensive income	0	0
Ending balance	$ 122	$ 122