Balance Sheet Components - Accounts Receivable, Net, Prepaid Expenses and Other Current Assets, Inventories, Property and Equipment, Net (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 28, 2014	Dec. 31, 2013
Accounts receivable, net
Accounts receivable	$ 84,421	$ 83,266
Less: allowances for doubtful accounts, returns and discounts	(6,906)	(8,214)
Accounts receivable, net	77,515	75,052
Inventories:
Raw materials	2,174	2,389
Work-in-process	1,169	976
Finished goods	26,961	33,561
Total inventories, net	30,304	36,926
Property and equipment, net:
Furniture and fixtures	8,222	8,227
Machinery and equipment	116,079	114,178
Leasehold improvements	8,170	7,888
Property, Plant and Equipment Gross, Total	132,471	130,293
Less: accumulated depreciation and amortization	(98,368)	(95,348)
Property and equipment, net	$ 34,103	$ 34,945