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Loans (Retail Loan Portfolio Categorized by Performance Status) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Residential Real Estate Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | $ 32,920 | $ 137,926
Prior Fiscal Year 1 | 136,773 | 104,122
Prior Fiscal Year 2 | 97,838 | 87,918
Prior Fiscal Year 3 | 81,623 | 67,111
Prior Fiscal Year 4 | 63,660 | 67,706
Prior | 188,795 | 135,017
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term | 0 | 0
Total | 601,609 | 599,800
Residential Real Estate Loans [Member] | Performing [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 32,920 | 137,926
Prior Fiscal Year 1 | 136,773 | 103,923
Prior Fiscal Year 2 | 97,640 | 87,153
Prior Fiscal Year 3 | 80,962 | 66,446
Prior Fiscal Year 4 | 62,906 | 67,473
Prior | 187,889 | 134,292
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term | 0 | 0
Total | 599,090 | 597,213
Residential Real Estate Loans [Member] | Non-Performing [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 0 | 0
Prior Fiscal Year 1 | 0 | 199
Prior Fiscal Year 2 | 198 | 765
Prior Fiscal Year 3 | 661 | 665
Prior Fiscal Year 4 | 754 | 233
Prior | 906 | 725
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term | 0 | 0
Total | 2,519 | 2,587
Residential Real Estate Lines [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 0 | 0
Prior Fiscal Year 1 | 0 | 0
Prior Fiscal Year 2 | 0 | 0
Prior Fiscal Year 3 | 0 | 0
Prior Fiscal Year 4 | 0 | 0
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 75,670 | 79,322
Revolving Loans Converted to Term | 9,692 | 10,483
Total | 85,362 | 89,805
Residential Real Estate Lines [Member] | Performing [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 0 | 0
Prior Fiscal Year 1 | 0 | 0
Prior Fiscal Year 2 | 0 | 0
Prior Fiscal Year 3 | 0 | 0
Prior Fiscal Year 4 | 0 | 0
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 75,606 | 79,257
Revolving Loans Converted to Term | 9,500 | 10,225
Total | 85,106 | 89,482
Residential Real Estate Lines [Member] | Non-Performing [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 0 | 0
Prior Fiscal Year 1 | 0 | 0
Prior Fiscal Year 2 | 0 | 0
Prior Fiscal Year 3 | 0 | 0
Prior Fiscal Year 4 | 0 | 0
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 64 | 65
Revolving Loans Converted to Term | 192 | 258
Total | 256 | 323
Consumer Indirect [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 105,985 | 295,286
Prior Fiscal Year 1 | 278,709 | 202,839
Prior Fiscal Year 2 | 182,584 | 167,092
Prior Fiscal Year 3 | 146,750 | 111,295
Prior Fiscal Year 4 | 94,262 | 47,925
Prior | 49,514 | 15,984
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term | 0 | 0
Total | 857,804 | 840,421
Consumer Indirect [Member] | Performing [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 105,985 | 295,216
Prior Fiscal Year 1 | 278,315 | 202,187
Prior Fiscal Year 2 | 182,163 | 166,773
Prior Fiscal Year 3 | 146,363 | 111,008
Prior Fiscal Year 4 | 94,067 | 47,793
Prior | 49,429 | 15,949
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term | 0 | 0
Total | 856,322 | 838,926
Consumer Indirect [Member] | Non-Performing [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 0 | 70
Prior Fiscal Year 1 | 394 | 652
Prior Fiscal Year 2 | 421 | 319
Prior Fiscal Year 3 | 387 | 287
Prior Fiscal Year 4 | 195 | 132
Prior | 85 | 35
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term | 0 | 0
Total | 1,482 | 1,495
Other Consumer [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 1,311 | 6,774
Prior Fiscal Year 1 | 5,419 | 3,177
Prior Fiscal Year 2 | 2,785 | 1,765
Prior Fiscal Year 3 | 1,439 | 907
Prior Fiscal Year 4 | 688 | 369
Prior | 962 | 508
Revolving Loans Amortized Cost Basis | 3,230 | 3,563
Revolving Loans Converted to Term | 0 | 0
Total | 15,834 | 17,063
Other Consumer [Member] | Performing [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 1,311 | 6,774
Prior Fiscal Year 1 | 5,419 | 3,177
Prior Fiscal Year 2 | 2,782 | 1,765
Prior Fiscal Year 3 | 1,439 | 907
Prior Fiscal Year 4 | 688 | 369
Prior | 962 | 508
Revolving Loans Amortized Cost Basis | 3,230 | 3,563
Revolving Loans Converted to Term | 0 | 0
Total | 15,831 | 17,063
Other Consumer [Member] | Non-Performing [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 0 | 0
Prior Fiscal Year 1 | 0 | 0
Prior Fiscal Year 2 | 3 | 0
Prior Fiscal Year 3 | 0 | 0
Prior Fiscal Year 4 | 0 | 0
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term | 0 | 0
Total | $ 3 | $ 0

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