Mortgage Servicing Rights and Mortgage Servicing Activity (Changes in the Carrying Amount of Mortgage Servicing Rights) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Mortage Servicing Rights Amortized Value [Roll Forward]
Mortgage Servicing Rights Beginning of Period	$ 18,127	$ 21,490	$ 18,938	$ 22,011	$ 22,011
Mortgage Servicing Rights Additions	32	63	60	533
Amortization of Mortgage Servicing Rights (MSRs)	(849)	(918)	(1,688)	(1,909)
Mortgage Servicing Rights, End of Period	17,310	20,635	17,310	20,635	18,938
Mortage Servicing Rights Valuation Rollforward [Roll Forward]
Mortgage Servicing rights Valuation Allowance Beginning of Period	(868)	(1,131)	(399)	(955)	(955)
Mortgage Servicing Rights (MSR) Impairment Recovery/(Additions)	(681)	641	(1,150)	465	600
Mortgage Servicing rights Valuation Allowance, End of Period	(1,549)	(490)	(1,549)	(490)	(399)
Mortgage Servicing Rights Net Carrying balance	15,761	20,145	15,761	20,145	18,500
Fair Value of Mortgage Servicing Rights	15,954	20,809	15,954	20,809	19,149
Level 3
Mortage Servicing Rights Valuation Rollforward [Roll Forward]
Fair Value of Mortgage Servicing Rights	$ 15,954	$ 20,809	$ 15,954	$ 20,809	$ 19,149