Summary Of Significant Accounting Policies (Schedule Of Movement Of Warranty Reserves) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 30, 2012	Dec. 25, 2011
Accounting Policies [Abstract]
Balance at beginning of year	$ 5,857	$ 6,170
Accruals for warranties issued	5,205	5,882
Settlements made	(5,429)	(6,194)
Adjustment for discontinued operations	(1,668)	0
Foreign currency translation adjustment	30	(1)
Balance at end of period	$ 3,995	$ 5,857