Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 334	$ 336
Estimated intangible asset amortization expense, remainder of fiscal year	1,300
Estimated intangible asset amortization expense in 2017	1,300
Estimated intangible asset amortization expense in 2018	1,300
Estimated intangible asset amortization expense in 2019	1,300
Estimated intangible asset amortization expense in 2020	$ 1,300