Mortgage Servicing Rights (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Mortgage Servicing Rights [Abstract]
Residential Mortgage Loans Serviced	$ 2,000,000		$ 2,000,000			$ 1,950,000
Mortgage servicing rights	18,162	$ 0	18,162	$ 0	$ 16,436	$ 16,688	$ 0	$ 16
Contractually Specified Servicing Fees, Late Fees, and Ancillary Fees Earned in Exchange for Servicing Financial Assets	4,200		6,100
Amortization of Mortgage Servicing Rights (MSRs)	(1,110)	0	(1,962)	(164)
Valuation allowance provision	$ (909)	$ 0	$ (847)	$ 0