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Summary Of Significant Accounting Policies (Foreign Currency - Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Summary Of Significant Accounting Policies [Abstract]
Foreign currency translation gain (loss)	$ (19,464,000)	$ 4,970,000	$ 7,291,000
Foreign currency transaction gain (loss)	$ 2,500,000	$ 700,000	$ (500,000)

Amount after tax, before reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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