Guarantees (Tables)

9 Months Ended

Sep. 30, 2011

Guarantees [Abstract]

Summary of warranty accrual included in accrued liabilities

	Three months ended						Nine months ended
	September 30, 2011			October 1, 2010			September 30, 2011			October 1, 2010
	(In thousands)
Balance at beginning of period	$	5,578		$	3,194		$	4,811		$	4,186
Accrual for current period warranties		1,990			1,096			6,423			2,567
Warranty costs incurred		(1,963	)		(1,267	)		(5,629	)		(3,730	)
Omneon acquisition		—			959			—			959
Balance at end of period	$	5,605		$	3,982		$	5,605		$	3,982