Mortgage Servicing Rights and Mortgage Servicing Activity (Changes In Key Economic Assumptions) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)
Transfers and Servicing [Abstract]
Prepayment speed assumption (annual CPR)	10.93%
Decrease in fair value from 10% adverse change	$ 1,032	$ 1,032
Decrease in fair value from 25% adverse change	$ 1,292	1,292
Discount rate assumption	9.39%
Decrease in fair value from 100 basis point adverse change	$ 599	599
Decrease in fair value from 200 basis point adverse change	$ 1,155	$ 1,155
Expected weighted-average life		97 months 18 days