Fair Value Accounting (Changes In Fair Value Included In Consolidated Statements Of Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Mortgage loans held for sale	$ 1,012	$ (813)	$ 450	$ 969
Aggregate fair value	73,623		73,623		$ 63,328
Unpaid principal balance	71,333		71,333		61,488
Fair value less aggregate unpaid principal balance	$ 2,290		$ 2,290		$ 1,840