Income Taxes (Schedule Of Federal Statutory Income Tax Rate To Income Before Income Tax) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Abstract]
Tax at statutory rate	$ 34,947	$ 40,662	$ 26,404
State taxes, net of federal tax effect	1,615	1,033	2,012
Effect of foreign operations and tax incentives	(24,737)	(19,138)	(11,710)
Change in valuation allowance	(118)	(17,880)	(44)
Chinese retroactive tax incentive	(1,227)	0	0
Losses in foreign jurisdictions for which no benefit has been provided	5,812	1,013	927
American Taxpayer Relief Act of 2012	0	(844)	0
Other	1,116	172	1,243
Total income tax expense	$ 17,408	$ 5,018	$ 18,832