Accrued Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 28, 2015	Dec. 31, 2014
Schedule of Accrued Liabilities [Line Items]
Accrued compensation and benefits	$ 10,247	$ 12,798
Accrued warranties	2,291	2,309	$ 2,202	$ 2,719
Professional and legal fees	1,170	2,014
Other accrued liabilities	5,137	5,453
Accrued liabilities	$ 18,845	$ 22,574