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Commitments and Off-balance Sheet Items (Summary of Commitments and Contingencies) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Commitment to Sell Loans, Mandatory |  |
Commitments and Contingent Liabilities [Line Items] |  |
Fixed Rate | $ 0 | $ 0
Variable Rate | 0 | 0
Commitment to Sell Loans, Non-Mandatory |  |
Commitments and Contingent Liabilities [Line Items] |  |
Fixed Rate | 19,724 | 19,406
Variable Rate | 0 | 0
Standby Letters of Credit |  |
Commitments and Contingent Liabilities [Line Items] |  |
Fixed Rate | 2,122 | 1,138
Variable Rate | 5,463 | 6,549
Commitment to Fund Loans |  |
Commitments and Contingent Liabilities [Line Items] |  |
Fixed Rate | 101,605 | 88,601
Variable Rate | 873,973 | 767,580
Commitment to Fund Loans | Consumer Lines |  |
Commitments and Contingent Liabilities [Line Items] |  |
Fixed Rate | 15,319 | 11,637
Variable Rate | 424,441 | 381,050
Commitment to Fund Loans | Commercial Operating Lines |  |
Commitments and Contingent Liabilities [Line Items] |  |
Fixed Rate | 33,892 | 47,310
Variable Rate | 447,270 | 384,513
Commitment to Fund Loans | Residential Mortgages |  |
Commitments and Contingent Liabilities [Line Items] |  |
Fixed Rate | 52,394 | 29,654
Variable Rate | $ 2,262 | $ 2,017

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