Loans (Retail Loan Portfolio Categorized by Performance Status) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Residential Real Estate Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	$ 45,664	$ 79,882
Prior Fiscal Year 1	81,457	86,126
Prior Fiscal Year 2	84,248	119,329
Prior Fiscal Year 3	115,536	77,232
Prior Fiscal Year 4	74,100	56,197
Prior	210,194	171,194
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	611,199	589,960
Residential Real Estate Loans [Member] | Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	45,664	79,882
Prior Fiscal Year 1	81,353	85,821
Prior Fiscal Year 2	83,363	118,819
Prior Fiscal Year 3	114,966	76,437
Prior Fiscal Year 4	73,542	55,520
Prior	208,491	169,410
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	607,379	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	885	510
Prior Fiscal Year 3	570	795
Prior Fiscal Year 4	558	677
Prior	1,703	1,784
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	3,820	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	70
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	102
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	70,087	70,976
Revolving Loans Converted to Term	5,884	6,694
Total	75,971	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	70,015	70,942
Revolving Loans Converted to Term	5,748	6,586
Total	75,763	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	72	34
Revolving Loans Converted to Term	136	108
Total	208	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	28
Revolving Loans Converted to Term	13
Total	41
Consumer Indirect [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	148,744	441,080
Prior Fiscal Year 1	390,833	333,111
Prior Fiscal Year 2	281,303	127,096
Prior Fiscal Year 3	100,765	60,362
Prior Fiscal Year 4	44,062	39,557
Prior	35,275	22,414
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	1,000,982	1,023,620
Consumer Indirect [Member] | Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	148,651	440,332
Prior Fiscal Year 1	389,735	331,902
Prior Fiscal Year 2	280,256	126,664
Prior Fiscal Year 3	100,445	59,981
Prior Fiscal Year 4	43,797	39,352
Prior	35,116	22,310
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	998,000	1,020,541
Consumer Indirect [Member] | Non-Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	93	748
Prior Fiscal Year 1	1,098	1,209
Prior Fiscal Year 2	1,047	432
Prior Fiscal Year 3	320	381
Prior Fiscal Year 4	265	205
Prior	159	104
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	2,982	3,079
Consumer Indirect [Member] | Current Period Gross Write-offs [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	6
Prior Fiscal Year 1	2,586
Prior Fiscal Year 2	2,520
Prior Fiscal Year 3	849
Prior Fiscal Year 4	801
Prior	867
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	7,629
Other Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	16,073	6,463
Prior Fiscal Year 1	4,920	2,664
Prior Fiscal Year 2	1,995	2,043
Prior Fiscal Year 3	1,421	761
Prior Fiscal Year 4	428	213
Prior	331	308
Revolving Loans Amortized Cost Basis	2,897	2,658
Revolving Loans Converted to Term	0	0
Total	28,065	15,110
Other Consumer [Member] | Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	16,073	6,463
Prior Fiscal Year 1	4,920	2,664
Prior Fiscal Year 2	1,995	2,043
Prior Fiscal Year 3	1,421	761
Prior Fiscal Year 4	428	213
Prior	331	308
Revolving Loans Amortized Cost Basis	2,892	2,656
Revolving Loans Converted to Term	0	0
Total	28,060	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	5	2
Revolving Loans Converted to Term	0	0
Total	5	$ 2
Other Consumer [Member] | Current Period Gross Write-offs [Member]
Financing Receivable Recorded Investment [Line Items]
Current Fiscal Year	455
Prior Fiscal Year 1	89
Prior Fiscal Year 2	89
Prior Fiscal Year 3	25
Prior Fiscal Year 4	17
Prior	17
Revolving Loans Amortized Cost Basis	28
Revolving Loans Converted to Term	0
Total	$ 720