Costs Associated With Exit Or Disposal Activities (Liabilities And Expenses Related To Exit Activities) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Costs Associated With Exit Or Disposal Activities [Abstract]
Balance at beginning of period	$ 1,479	$ 3,038
Charged to earnings	2,041	2,262
Cash paid	(2,472)	(3,821)
Balance at the end of period	$ 1,048	$ 1,479