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