Summary of Restructuring Reserve (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016
Restructuring And Related Activities [Abstract]
Restructuring reserve beginning balance	$ 388
Restructuring expenses incurred during the period	552	$ 924
Adjustments to prior period estimates, net	(16)
Amounts paid during the period	(553)	(553)
Restructuring reserve ending balance	$ 371	$ 371