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Other Intangible Assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]        
2021 $ 392      
2022 353      
2023 316      
2024 287      
2025 239      
2026 and beyond 363      
Net Carrying Amount 1,950 $ 1,661 $ 1,852 $ 2,289
Mortgage Servicing Rights        
Finite-Lived Intangible Assets [Line Items]        
2021 181      
2022 160      
2023 140      
2024 132      
2025 132      
2026 and beyond 87      
Net Carrying Amount 832 316 262 437
Customer Intangibles        
Finite-Lived Intangible Assets [Line Items]        
2021 211      
2022 193      
2023 176      
2024 155      
2025 107      
2026 and beyond 276      
Net Carrying Amount $ 1,118 $ 1,345 $ 1,590 $ 1,852