Balance Sheet Components - Accounts Receivable, Net, Inventories, Property and Equipment, Net (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 29, 2013	Dec. 31, 2012
Accounts receivable, net
Accounts receivable	$ 105,497	$ 95,515
Less: allowances for doubtful accounts, returns and discounts	(9,805)	(9,595)
Accounts receivable, net	95,692	85,920
Inventories:
Raw materials	4,579	10,731
Work-in-process	2,850	4,347
Finished goods	38,956	49,192
Total inventories, net	46,385	64,270
Property and equipment, net:
Furniture and fixtures	7,902	7,856
Machinery and equipment	105,499	108,262
Leasehold improvements	7,387	7,612
Property, Plant and Equipment Gross, Total	120,788	123,730
Less: accumulated depreciation and amortization	(83,587)	(85,608)
Property and equipment, net	$ 37,201	$ 38,122