v3.26.1
Loans (Retail Loan Portfolio Categorized by Performance Status) (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Residential Real Estate Loans [Member]    
Financing Receivable Recorded Investment [Line Items]    
Current Fiscal Year $ 32,217 $ 61,958
Prior Fiscal Year 1 65,788 56,994
Prior Fiscal Year 2 54,153 103,502
Prior Fiscal Year 3 97,965 71,200
Prior Fiscal Year 4 68,782 69,079
Prior 343,677 294,268
Revolving Loans Amortized Cost Basis 0 0
Revolving Loans Converted to Term 0 0
Total 662,582 657,001
Residential Real Estate Loans [Member] | Performing [Member]    
Financing Receivable Recorded Investment [Line Items]    
Current Fiscal Year 31,837 61,803
Prior Fiscal Year 1 65,312 56,511
Prior Fiscal Year 2 53,682 102,504
Prior Fiscal Year 3 97,390 70,501
Prior Fiscal Year 4 68,197 68,202
Prior 339,190 291,037
Revolving Loans Amortized Cost Basis 0 0
Revolving Loans Converted to Term 0 0
Total 655,608 650,558
Residential Real Estate Loans [Member] | Non-Performing [Member]    
Financing Receivable Recorded Investment [Line Items]    
Current Fiscal Year 380 155
Prior Fiscal Year 1 476 483
Prior Fiscal Year 2 471 998
Prior Fiscal Year 3 575 699
Prior Fiscal Year 4 585 877
Prior 4,487 3,231
Revolving Loans Amortized Cost Basis 0 0
Revolving Loans Converted to Term 0 0
Total 6,974 6,443
Residential Real Estate Loans [Member] | Current Period Gross Charge Offs [Member]    
Financing Receivable Recorded Investment [Line Items]    
Current Fiscal Year 0 0
Prior Fiscal Year 1 0 0
Prior Fiscal Year 2 0 19
Prior Fiscal Year 3 0 0
Prior Fiscal Year 4 0 130
Prior 20 19
Revolving Loans Amortized Cost Basis 0 0
Revolving Loans Converted to Term 0 0
Total 20 168
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 73,800 74,327
Revolving Loans Converted to Term 2,299 794
Total 76,099 75,121
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 73,388 73,953
Revolving Loans Converted to Term 2,299 794
Total 75,687 74,747
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 412 374
Revolving Loans Converted to Term 0 0
Total 412 374
Residential Real Estate Lines [Member] | Current Period Gross Charge Offs [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 30 0
Revolving Loans Converted to Term 0 27
Total 30 27
Consumer Indirect [Member]    
Financing Receivable Recorded Investment [Line Items]    
Current Fiscal Year 134,985 284,076
Prior Fiscal Year 1 243,203 158,483
Prior Fiscal Year 2 129,836 122,251
Prior Fiscal Year 3 95,799 142,610
Prior Fiscal Year 4 104,684 79,374
Prior 62,619 20,516
Revolving Loans Amortized Cost Basis 0 0
Revolving Loans Converted to Term 0 0
Total 771,126 807,310
Consumer Indirect [Member] | Performing [Member]    
Financing Receivable Recorded Investment [Line Items]    
Current Fiscal Year 134,858 283,761
Prior Fiscal Year 1 243,007 158,129
Prior Fiscal Year 2 129,633 121,885
Prior Fiscal Year 3 95,454 142,171
Prior Fiscal Year 4 104,176 78,858
Prior 62,226 20,351
Revolving Loans Amortized Cost Basis 0 0
Revolving Loans Converted to Term 0 0
Total 769,354 805,155
Consumer Indirect [Member] | Non-Performing [Member]    
Financing Receivable Recorded Investment [Line Items]    
Current Fiscal Year 127 315
Prior Fiscal Year 1 196 354
Prior Fiscal Year 2 203 366
Prior Fiscal Year 3 345 439
Prior Fiscal Year 4 508 516
Prior 393 165
Revolving Loans Amortized Cost Basis 0 0
Revolving Loans Converted to Term 0 0
Total 1,772 2,155
Consumer Indirect [Member] | Current Period Gross Charge Offs [Member]    
Financing Receivable Recorded Investment [Line Items]    
Current Fiscal Year 2 645
Prior Fiscal Year 1 1,223 2,375
Prior Fiscal Year 2 1,190 3,645
Prior Fiscal Year 3 1,338 5,390
Prior Fiscal Year 4 1,947 3,603
Prior 1,820 1,652
Revolving Loans Amortized Cost Basis 0 0
Revolving Loans Converted to Term 0 0
Total 7,520 17,310
Other Consumer [Member]    
Financing Receivable Recorded Investment [Line Items]    
Current Fiscal Year 2,474 6,781
Prior Fiscal Year 1 3,406 4,828
Prior Fiscal Year 2 3,808 22,185
Prior Fiscal Year 3 19,178 1,221
Prior Fiscal Year 4 806 225
Prior 296 384
Revolving Loans Amortized Cost Basis 2,806 2,218
Revolving Loans Converted to Term 0 0
Total 32,774 37,842
Other Consumer [Member] | Performing [Member]    
Financing Receivable Recorded Investment [Line Items]    
Current Fiscal Year 2,474 6,760
Prior Fiscal Year 1 3,398 4,819
Prior Fiscal Year 2 3,711 22,110
Prior Fiscal Year 3 19,174 1,211
Prior Fiscal Year 4 798 225
Prior 296 384
Revolving Loans Amortized Cost Basis 2,792 2,215
Revolving Loans Converted to Term 0 0
Total 32,643 37,724
Other Consumer [Member] | Non-Performing [Member]    
Financing Receivable Recorded Investment [Line Items]    
Current Fiscal Year 0 21
Prior Fiscal Year 1 8 9
Prior Fiscal Year 2 97 75
Prior Fiscal Year 3 4 10
Prior Fiscal Year 4 8 0
Prior 0 0
Revolving Loans Amortized Cost Basis 14 3
Revolving Loans Converted to Term 0 0
Total 131 118
Other Consumer [Member] | Current Period Gross Charge Offs [Member]    
Financing Receivable Recorded Investment [Line Items]    
Current Fiscal Year 173 376
Prior Fiscal Year 1 32 206
Prior Fiscal Year 2 51 693
Prior Fiscal Year 3 227 47
Prior Fiscal Year 4 26 15
Prior 2 11
Revolving Loans Amortized Cost Basis 14 44
Revolving Loans Converted to Term 0 0
Total $ 525 $ 1,392