STOCKHOLDERS' EQUITY - CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	$ 115
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive income before reclassifications	(22)
Amounts reclassified from accumulated other comprehensive income	0
Net current period other comprehensive income	(22)
Ending balance	93
Unrealized gains and losses on available-for sale securities
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	(7)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive income before reclassifications	(22)
Amounts reclassified from accumulated other comprehensive income	0
Net current period other comprehensive income	(22)
Ending balance	(29)
Foreign currency items
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance	122
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive income before reclassifications	0
Amounts reclassified from accumulated other comprehensive income	0
Net current period other comprehensive income	0
Ending balance	$ 122