BALANCE SHEET - Accounts Receivable, Inventories, Property and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2012	Dec. 31, 2011
Accounts receivable
Accounts receivable	$ 103,150	$ 118,138
Less: allowances for doubtful accounts, returns and discounts	(8,512)	(8,252)
Accounts Receivable, Net, Current, Total	94,638	109,886
Inventories:
Raw materials	10,708	14,099
Work-in-process	5,182	4,250
Finished goods	52,379	52,300
Total inventories, net	68,269	70,649
Property and equipment:
Furniture and fixtures	7,548	6,706
Machinery and equipment	105,865	97,916
Leasehold improvements	7,584	7,079
Property, Plant and Equipment, Gross, Total	120,997	111,701
Less: accumulated depreciation and amortization	(81,876)	(71,232)
Property and equipment, net	$ 39,121	$ 40,469