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Loans (Commercial Loan Portfolio Categorized by Internally Assigned Asset Classification) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Commercial Business [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | $ 34,725 | $ 351,185
Prior Fiscal Year 1 | 283,243 | 113,040
Prior Fiscal Year 2 | 106,851 | 83,233
Prior Fiscal Year 3 | 66,511 | 33,163
Prior Fiscal Year 4 | 24,542 | 8,438
Prior | 25,938 | 17,934
Revolving Loans Amortized Cost Basis | 275,126 | 187,155
Revolving Loans Converted to Term | 0 | 0
Total | 816,936 | 794,148
Commercial Business [Member] | Uncriticized [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 34,725 | 350,992
Prior Fiscal Year 1 | 282,996 | 112,469
Prior Fiscal Year 2 | 106,625 | 82,029
Prior Fiscal Year 3 | 65,350 | 31,990
Prior Fiscal Year 4 | 23,823 | 8,195
Prior | 24,702 | 16,600
Revolving Loans Amortized Cost Basis | 268,143 | 179,770
Revolving Loans Converted to Term | 0 | 0
Total | 806,364 | 782,045
Commercial Business [Member] | Special Mention [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 0 | 0
Prior Fiscal Year 1 | 0 | 360
Prior Fiscal Year 2 | 1 | 21
Prior Fiscal Year 3 | 42 | 709
Prior Fiscal Year 4 | 566 | 41
Prior | 1,002 | 1,025
Revolving Loans Amortized Cost Basis | 2,795 | 2,995
Revolving Loans Converted to Term | 0 | 0
Total | 4,406 | 5,151
Commercial Business [Member] | Substandard [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 0 | 193
Prior Fiscal Year 1 | 247 | 211
Prior Fiscal Year 2 | 225 | 1,183
Prior Fiscal Year 3 | 1,119 | 464
Prior Fiscal Year 4 | 153 | 202
Prior | 234 | 309
Revolving Loans Amortized Cost Basis | 4,188 | 4,390
Revolving Loans Converted to Term | 0 | 0
Total | 6,166 | 6,952
Commercial Business [Member] | Doubtful [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 | 0 | 0
Revolving Loans Converted to Term | 0 | 0
Total | 0 | 0
Commercial Mortgage [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 47,989 | 324,852
Prior Fiscal Year 1 | 346,818 | 272,232
Prior Fiscal Year 2 | 265,271 | 185,234
Prior Fiscal Year 3 | 167,642 | 190,949
Prior Fiscal Year 4 | 188,854 | 87,174
Prior | 259,174 | 192,487
Revolving Loans Amortized Cost Basis | 1,093 | 973
Revolving Loans Converted to Term | 0 | 0
Total | 1,276,841 | 1,253,901
Commercial Mortgage [Member] | Uncriticized [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 47,489 | 310,364
Prior Fiscal Year 1 | 332,420 | 227,406
Prior Fiscal Year 2 | 220,441 | 163,839
Prior Fiscal Year 3 | 146,250 | 161,771
Prior Fiscal Year 4 | 159,788 | 74,915
Prior | 208,781 | 154,399
Revolving Loans Amortized Cost Basis | 895 | 731
Revolving Loans Converted to Term | 0 | 0
Total | 1,116,064 | 1,093,425
Commercial Mortgage [Member] | Special Mention [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 500 | 14,299
Prior Fiscal Year 1 | 14,067 | 42,305
Prior Fiscal Year 2 | 39,480 | 19,505
Prior Fiscal Year 3 | 19,511 | 27,530
Prior Fiscal Year 4 | 27,305 | 12,256
Prior | 40,518 | 28,744
Revolving Loans Amortized Cost Basis | 0 | 43
Revolving Loans Converted to Term | 0 | 0
Total | 141,381 | 144,682
Commercial Mortgage [Member] | Substandard [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Current Fiscal Year | 0 | 189
Prior Fiscal Year 1 | 331 | 2,521
Prior Fiscal Year 2 | 5,350 | 1,890
Prior Fiscal Year 3 | 1,881 | 1,648
Prior Fiscal Year 4 | 1,761 | 3
Prior | 9,875 | 9,344
Revolving Loans Amortized Cost Basis | 198 | 199
Revolving Loans Converted to Term | 0 | 0
Total | 19,396 | 15,794
Commercial Mortgage [Member] | Doubtful [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 | 0 | 0
Revolving Loans Converted to Term | 0 | 0
Total | $ 0 | $ 0

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