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Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Income Tax Contingency [Line Items]    
Tax Cuts And Jobs Act Of 2017, incomplete accounting, change in tax rate deferred tax asset, provisional income tax expense $ 1,700  
Valuation Allowance 140 $ 214
Unrealized gain (loss) related to securities available for sale 280 (757)
Unrealized loss related to SERP 295 431
Unrealized gain (loss) related to interest rate swap 168 1,000
State and Local Jurisdiction    
Income Tax Contingency [Line Items]    
Operating Loss Carryforwards $ 2,000 $ 3,000