Costs Associated With Exit And Restructuring Activities (Liabilities And Expenses Related To Exit And Restructuring Activities) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Costs Associated With Exit And Restructuring Activities [Abstract]
Balance at beginning of period	$ 1,048	$ 1,301
Charged to earnings	0	1,886
Cash paid	(337)	(1,066)
Balance at the end of period	$ 711	$ 2,121