Accounts Receivable, Net and Significant Customers (Accounts Receivables) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross accounts receivable	$ 271,993	$ 232,838
Allowance for doubtful accounts	(500)	(500)
Allowance for sales returns	(101)	(65)
Accounts receivable, net	$ 271,392	$ 232,273