Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Accumulated Other Comprehensive Income (Loss), Net of Tax, from Unrealized Gains (Losses) on Available-for-Sale Marketable Securities (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2016 USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Total Accumulated Other Comprehensive Income (Loss), Beginning Balance	$ (35)
Other comprehensive income before reclassifications	76
Amount reclassified from accumulated other comprehensive income	0
Net current period other comprehensive income	76
Total Accumulated Other Comprehensive Income (Loss), Ending Balance	$ 41