Accrued Liabilities (Schedule Of Changes In Accrued Product Warranty Liability) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Accrued Liabilities [Abstract]
Balance at beginning of period	$ 19,100		$ 19,312		$ 19,141
Product warranty accruals	26,989		24,730		24,307
Settlements	(23,434)		(24,600)		(24,643)
Acquisitions	532		133
Charged to other accounts (1)	(248)	[1]	(475)	[1]	507	[1]
Balance at end of period	$ 22,939		$ 19,100		$ 19,312

[1] Includes primarily the effect of foreign currency translation adjustments for the Company's subsidiaries with functional currencies other than the USD.