Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 319	$ 333	$ 652	$ 669
Estimated intangible asset amortization expense, remainder of fiscal year	1,300		1,300
Estimated intangible asset amortization expense in 2017	1,300		1,300
Estimated intangible asset amortization expense in 2018	1,300		1,300
Estimated intangible asset amortization expense in 2019	1,300		1,300
Estimated intangible asset amortization expense in 2020	$ 1,300		$ 1,300