Other Intangible Assets Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount						$ 8,597	$ 8,451
Accumulated Amortization						(5,901)	(5,344)
Net Carrying Amount		$ 3,107		$ 3,625	$ 4,140	2,696	3,107
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Beginning Balance		3,107		3,625	4,140
Intangible Assets Acquired		146		107	133
Impairment of Intangible Assets, Finite-lived		0		38
Amortization of Intangible Assets		(557)		(587)	(648)
Finite-Lived Intangible Assets, Ending Balance		2,696		3,107	3,625
Depositor Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	[1]					2,247	2,247
Accumulated Amortization	[1]					(2,247)	(2,247)
Net Carrying Amount	[1]	0		10	61	0	0
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Beginning Balance	[1]	0		10	61
Intangible Assets Acquired	[1]	0		0	0
Impairment of Intangible Assets, Finite-lived		0		0
Amortization of Intangible Assets	[1]	0		(10)	(51)
Finite-Lived Intangible Assets, Ending Balance	[1]	0		0	10
Mortgage Servicing Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	[2]					1,968	1,822
Accumulated Amortization	[2]					(1,403)	(1,143)
Net Carrying Amount	[2]	679		832	960	565	679
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Beginning Balance	[2]	679		832	960
Intangible Assets Acquired	[2]	146		107	133
Impairment of Intangible Assets, Finite-lived		0	[2]	0
Amortization of Intangible Assets	[2]	(260)		(260)	(261)
Finite-Lived Intangible Assets, Ending Balance	[2]	565		679	832
Customer Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	[1]					4,382	4,382
Accumulated Amortization	[1]					(2,251)	(1,954)
Net Carrying Amount	[1]	2,428		2,783	3,119	$ 2,131	$ 2,428
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Beginning Balance	[1]	2,428		2,783	3,119
Intangible Assets Acquired	[1]	0		0	0
Impairment of Intangible Assets, Finite-lived		0	[1]	38
Amortization of Intangible Assets	[1]	(297)		(317)	(336)
Finite-Lived Intangible Assets, Ending Balance	[1]	$ 2,131		$ 2,428	$ 2,783

[1] Amortization of depositor intangibles and customer intangibles are reported in the consolidated statements of income as a component of other operating expense.

[2] Amortization of mortgage servicing rights is reported in the consolidated statements of income as a reduction of mortgage servicing fee income, which is included with fees for other services to customers.