SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning	[1]	$ 793	$ 1,048	$ 1,074
Provision	[1]	584	522	404
Write-offs and recoveries, net	[1]	(315)	(777)	(430)
Balance Ending	[1]	1,062	793	1,048
Reserve for Excess and Obsolete Inventories [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning	[2]	21,325	23,946	17,222
Provision	[2]	2,159	3,539	11,652
Write-offs and recoveries, net	[2]	(3,854)	(6,160)	(4,928)
Balance Ending	[2]	$ 19,630	$ 21,325	$ 23,946

[1] The provision is included in selling expenses.

[2] The provision is included in cost of revenues.