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Fair Value Accounting (Changes In Fair Value Included In Consolidated Statements Of Income) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Fair Value Disclosures [Abstract]      
Mortgage loans held for sale $ 725 $ (2,759)  
Aggregate fair value 50,390   45,384
Unpaid principal balance 49,224   44,943
Aggregate fair value less aggregate unpaid principal balance $ 1,166   $ 441