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Loans (Summary of Collateral Dependent Loans) (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Collateral dependent loans on business assets | $ 596 | $ 2,379
Collateral dependent loans on real property | 65,278 | 36,625
Collateral dependent loans | 65,874 | 39,004
Collateral dependent loan with specific reserve | 11,320 | 9,570
Commercial Business [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Collateral dependent loans on business assets | 596 | 2,379
Collateral dependent loans on real property | 1,062 |
Collateral dependent loans | 1,658 | 2,379
Collateral dependent loan with specific reserve | 1,370 | 1,383
Commercial Mortgage [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Collateral dependent loans on real property | 64,216 | 36,625
Collateral dependent loans | 64,216 | 36,625
Collateral dependent loan with specific reserve | $ 9,950 | $ 8,187

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