Loans (Retail Loan Portfolio Categorized by Performance Status) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Residential Real Estate Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	$ 14,093	$ 79,882
Prior Fiscal Year 1	80,617	86,126
Prior Fiscal Year 2	85,409	119,329
Prior Fiscal Year 3	117,362	77,232
Prior Fiscal Year 4	75,541	56,197
Prior	218,824	171,194
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	591,846	589,960
Residential Real Estate Loans [Member] | Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	14,093	79,882
Prior Fiscal Year 1	80,513	85,821
Prior Fiscal Year 2	84,985	118,819
Prior Fiscal Year 3	116,787	76,437
Prior Fiscal Year 4	75,111	55,520
Prior	217,090	169,410
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	588,579	585,889
Residential Real Estate Loans [Member] | Non-Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	0	0
Prior Fiscal Year 1	104	305
Prior Fiscal Year 2	424	510
Prior Fiscal Year 3	575	795
Prior Fiscal Year 4	430	677
Prior	1,734	1,784
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	3,267	4,071
Residential Real Estate Loans [Member] | Current Period Gross Write-offs [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	0
Prior Fiscal Year 1	0
Prior Fiscal Year 2	0
Prior Fiscal Year 3	0
Prior Fiscal Year 4	32
Prior	31
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	63
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	69,890	70,976
Revolving Loans Converted to Term	6,196	6,694
Total	76,086	77,670
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	69,849	70,942
Revolving Loans Converted to Term	6,078	6,586
Total	75,927	77,528
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	41	34
Revolving Loans Converted to Term	118	108
Total	159	142
Residential Real Estate Lines [Member] | Current Period Gross Write-offs [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	0
Prior Fiscal Year 1	0
Prior Fiscal Year 2	0
Prior Fiscal Year 3	0
Prior Fiscal Year 4	0
Prior	0
Revolving Loans Amortized Cost Basis	3
Revolving Loans Converted to Term	13
Total	16
Consumer Indirect [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	84,318	441,080
Prior Fiscal Year 1	419,060	333,111
Prior Fiscal Year 2	306,332	127,096
Prior Fiscal Year 3	113,146	60,362
Prior Fiscal Year 4	52,066	39,557
Prior	47,280	22,414
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	1,022,202	1,023,620
Consumer Indirect [Member] | Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	84,318	440,332
Prior Fiscal Year 1	418,196	331,902
Prior Fiscal Year 2	305,429	126,664
Prior Fiscal Year 3	112,809	59,981
Prior Fiscal Year 4	51,838	39,352
Prior	47,125	22,310
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	1,019,715	1,020,541
Consumer Indirect [Member] | Non-Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	0	748
Prior Fiscal Year 1	864	1,209
Prior Fiscal Year 2	903	432
Prior Fiscal Year 3	337	381
Prior Fiscal Year 4	228	205
Prior	155	104
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	2,487	3,079
Consumer Indirect [Member] | Current Period Gross Write-offs [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	3
Prior Fiscal Year 1	1,322
Prior Fiscal Year 2	1,692
Prior Fiscal Year 3	497
Prior Fiscal Year 4	586
Prior	520
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	4,620
Other Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	3,748	6,463
Prior Fiscal Year 1	5,367	2,664
Prior Fiscal Year 2	2,285	2,043
Prior Fiscal Year 3	1,735	761
Prior Fiscal Year 4	565	213
Prior	420	308
Revolving Loans Amortized Cost Basis	2,487	2,658
Revolving Loans Converted to Term	0	0
Total	16,607	15,110
Other Consumer [Member] | Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	3,748	6,463
Prior Fiscal Year 1	5,367	2,664
Prior Fiscal Year 2	2,285	2,043
Prior Fiscal Year 3	1,735	761
Prior Fiscal Year 4	565	213
Prior	420	308
Revolving Loans Amortized Cost Basis	2,483	2,656
Revolving Loans Converted to Term	0	0
Total	16,603	15,108
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	0	0
Prior Fiscal Year 3	0	0
Prior Fiscal Year 4	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	4	2
Revolving Loans Converted to Term	0	0
Total	4	$ 2
Other Consumer [Member] | Current Period Gross Write-offs [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	265
Prior Fiscal Year 1	34
Prior Fiscal Year 2	48
Prior Fiscal Year 3	9
Prior Fiscal Year 4	5
Prior	8
Revolving Loans Amortized Cost Basis	13
Revolving Loans Converted to Term	0
Total	$ 382