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Troubled Debt Restructurings (Narrative) (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 USD ($) loan contract | Mar. 31, 2021 USD ($) loan contract | Dec. 31, 2021 USD ($) loan
Financing Receivable Modifications [Line Items] |  |  |
Number of troubled debt restructured loans | loan | 17 |  | 17
Financing Receivable, Modifications, Nonaccrual, Number of Contracts | loan | 2 |  | 2
Financing Receivable, Modifications, Nonaccrual, Recorded Investment | $ | $ 145 |  | $ 149
Total troubled debt restructured loans | $ | $ 2,600 |  | $ 2,700
Number of deferral loans of interest and principal payments | loan |  | 2 |
Number of contractions modified by granting concession | contract |  | 2 |
Number of payment defaults | contract | 0 | 0 |
Residential Single Family |  |  |
Financing Receivable Modifications [Line Items] |  |  |
Loan is considered payment default | 30 days |  |
Payment Deferral [Member] | CARES Act [Member] |  |  |
Financing Receivable Modifications [Line Items] |  |  |
Deferrals on outstanding loan balances | $ |  | $ 41 |

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