Summary Of Significant Accounting Policies (Schedule Of Movement Of Warranty Reserves) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013
Accounting Policies [Abstract]
Balance at beginning of year	$ 4,521	$ 3,995
Accruals for warranties issued, net	2,232	2,531
Settlements made	(1,874)	(2,019)
Foreign currency translation adjustment	18	(125)
Balance at end of period	$ 4,897	$ 4,382