Commitments and Contingencies (Tables)

3 Months Ended

Mar. 30, 2013

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

	Three Months Ended
	March 30, 2013			March 31, 2012
Balance at beginning of year	$	4,858		$	6,310
Additions charged to costs and expenses for current-year sales	1,469			1,448
Deductions from reserves	(1,403		)	(1,383		)
Changes in liability for pre-existing warranties during the current year, including expirations	(306		)	505
Acquired warranty reserve	658			—
Balance at end of period	$	5,276		$	6,880

Schedule of Sales Return Liability [Table Text Block]

The activity in the sales returns liability account was as follows (in thousands):

	Three Months Ended
	March 30, 2013			March 31, 2012
Balance at beginning of year	$	5,330		$	4,402
Additions that reduce net sales	12,963			13,066
Deductions from reserves	(13,230		)	(12,047		)
Acquired sales return reserve	50			—
Balance at end of period	$	5,113		$	5,421