Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 26,306		$ 26,500
Decrease in goodwill offset amount due to foreign currency fluctuations	194
Aggregate amortization expense on intangible assets	$ 25	$ 25