Commitments And Contingencies (Roll Forward Of The Warranty Reserve) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Commitments And Contingencies [Abstract]
Beginning balance January 1	$ 3,831	$ 4,383	$ 3,751
Provision for warranties	4,648	4,331	4,507
Claim settlements	(4,443)	(4,665)	(3,918)
Other adjustments, including acquisitions and currency translation	381	(218)	43
Ending balance December 31	$ 4,417	$ 3,831	$ 4,383