Income Taxes (Schedule Of Provision For Income Taxes) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Abstract]
Interest expense and penalties, related to unrecognized tax benefits	$ 400,000	$ 200,000
Current, U.S. federal tax	5,154,000	1,124,000	(3,099,000)
Current, state and local tax	1,948,000	1,928,000	1,173,000
Current, Non-U.S. tax	26,314,000	32,816,000	26,560,000
Total current	33,416,000	35,868,000	24,634,000
Deferred, U.S. federal tax	52,948,000	(45,576,000)	26,326,000
Deferred, U.S. state and local tax	1,068,000	524,000	238,000
Deferred, Non-U.S. tax	984,000	1,129,000	4,889,000
Total deferred	55,000,000	(43,923,000)	31,453,000
Total provision for income taxes	$ 88,416,000	$ (8,055,000)	$ 56,087,000