Accounts Receivable, Net (Details) (USD $) In Thousands, unless otherwise specified	Apr. 01, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	$ 119,458	$ 146,682
Less: Allowance for sales returns	4,307	4,423
Less: Allowance for doubtful accounts	2,314	2,522
Accounts receivable, net	$ 112,837	$ 139,737
Accounts Receivable Concentration Risk [Member] | ScanSource [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of accounts receivable from largest customer	18.00%	19.00%