Accumulated Other Comprehensive Income (Loss) - Summary of Changes in AOCI, Net of Tax, from Unrealized Gains (Losses) on Available-for-Sale Marketable Securities (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Total Accumulated Other Comprehensive (Loss), Beginning Balance	$ 0
Other comprehensive loss before reclassifications	(35)
Amount reclassified from accumulated other comprehensive income	0
Net current period other comprehensive loss	(35)
Total Accumulated Other Comprehensive (Loss), Ending Balance	$ (35)