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Investment Securities (Narrative) (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2021 | Dec. 31, 2020
Schedule of Investments [Line Items] |  |  |
Available-for-sale Securities Pledged as Collateral | $ 123,437,000 | $ 123,437,000 | $ 102,959,000
Debt Securities, Available-for-sale, Restriction Type [Extensible List] | us-gaap:CollateralPledgedMember | us-gaap:CollateralPledgedMember | us-gaap:CollateralPledgedMember
Available-for-sale securities in an unrealized loss position | $ 0 | $ 0 |
Available for sale securities executed | 0 | 0 |
FHLB [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Letter of credit outstanding, amount | $ 265,320,000 | $ 265,320,000 | $ 288,950,000

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