Accounts Receivable, Net - Schedule of Allowance for Doubtful Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Receivables [Abstract]
Balance at beginning of period	$ 2,241	$ 2,500	$ 2,359
Charge to costs and expenses	1,137	610	666
Write-offs, net of recoveries	(273)	(785)	(510)
Other adjustments	(148)	(84)	(15)
Balance at end of period	$ 2,957	$ 2,241	$ 2,500