Other Intangible Assets Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount				$ 9,479	$ 8,858
Accumulated Amortization				(7,529)	(7,197)
Net Carrying Amount	$ 1,661	$ 1,852	$ 1,852	1,950	1,661
Rollforward of Intangible Assets:
Beginning balance	1,661	1,852	2,289
Intangible Assets Acquired	621	168	0
Intangible Assets Disposed	0	0	0
Amortization of Intangible Assets	(332)	(359)	(437)
Ending balance	1,950	1,661	1,852
Mortgage Servicing Rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount				2,850	2,229
Accumulated Amortization				(2,018)	(1,913)
Net Carrying Amount	832	262	262	832	316
Rollforward of Intangible Assets:
Beginning balance	316	262	437
Intangible Assets Acquired	621	168	0
Intangible Assets Disposed	0	0	0
Amortization of Intangible Assets	(105)	(114)	(175)
Ending balance	832	316	262
Customer Intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount				4,382	4,382
Accumulated Amortization				(3,264)	(3,037)
Net Carrying Amount	1,345	1,345	1,590	$ 1,118	$ 1,345
Rollforward of Intangible Assets:
Beginning balance	1,345	1,590	1,852
Intangible Assets Acquired	0	0	0
Intangible Assets Disposed	0	0	0
Amortization of Intangible Assets	(227)	(245)	(262)
Ending balance	$ 1,118	$ 1,345	$ 1,590