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Borrowings (Collateral Pledged for Repurchase Agreements) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Assets Sold under Agreements to Repurchase [Line Items] |  |
Available-for-sale Securities Pledged as Collateral | $ 199,361 | $ 157,233
Short-term Borrowings | 63,303 | 62,256
Mortgage-backed Securities-Government Sponsored Entities [Member] |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Available-for-sale Securities Pledged as Collateral | 64,429 | 36,195
Maturity Overnight [Member] | Mortgage-backed Securities-Government Sponsored Entities [Member] |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Available-for-sale Securities Pledged as Collateral | 64,429 | 36,195
Securities Sold under Agreements to Repurchase [Member] |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Available-for-sale Securities Pledged as Collateral | 64,429 | 36,195
Short-term Borrowings | $ 63,303 | $ 30,505

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