Loans - Receivables Past Due (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Non performing loans [Abstract]
Non- Accrual with no Allowance for Credit Loss	$ 1,061	$ 1,339
Non- Accrual with an Allowance for Credit Loss	3,654	2,382
Total Non- Accrual	4,715	3,721
90+ and Still Accruing	0	0
Accrued interest excluded from total	11,962	10,009
Financial Asset, Equal to or Greater than 90 Days Past Due
Non performing loans [Abstract]
Accrued interest excluded from total	0	0
Commercial and industrial
Non performing loans [Abstract]
Government guaranteed loans excluded from non-performing loans	23	29
1-4 family owner occupied - non-jumbo
Non performing loans [Abstract]
Government guaranteed loans excluded from non-performing loans	2,231	1,631
Commercial
Non performing loans [Abstract]
Accrued interest excluded from total	5,461	4,409
Commercial | Commercial and industrial
Non performing loans [Abstract]
Non- Accrual with no Allowance for Credit Loss	0	0
Non- Accrual with an Allowance for Credit Loss	8	9
Total Non- Accrual	8	9
90+ and Still Accruing	0	0
Accrued interest excluded from total	2,531	2,046
Commercial | Commercial real estate
Non performing loans [Abstract]
Non- Accrual with no Allowance for Credit Loss	0	0
Non- Accrual with an Allowance for Credit Loss	0	0
Total Non- Accrual	0	0
90+ and Still Accruing	0	0
Accrued interest excluded from total	2,930	2,363
Mortgage
Non performing loans [Abstract]
Accrued interest excluded from total	4,876	4,116
Mortgage | 1-4 family owner occupied - jumbo
Non performing loans [Abstract]
Non- Accrual with no Allowance for Credit Loss	0	0
Non- Accrual with an Allowance for Credit Loss	0	0
Total Non- Accrual	0	0
90+ and Still Accruing	0	0
Accrued interest excluded from total	2,274	1,892
Mortgage | 1-4 family owner occupied - non-jumbo
Non performing loans [Abstract]
Non- Accrual with no Allowance for Credit Loss	1,061	1,077
Non- Accrual with an Allowance for Credit Loss	1,531	852
Total Non- Accrual	2,592	1,929
90+ and Still Accruing	0	0
Accrued interest excluded from total	1,058	953
Mortgage | 1-4 family non-owner occupied
Non performing loans [Abstract]
Non- Accrual with no Allowance for Credit Loss	0	152
Non- Accrual with an Allowance for Credit Loss	498	323
Total Non- Accrual	498	475
90+ and Still Accruing	0	0
Accrued interest excluded from total	626	558
Mortgage | 1-4 family - 2nd lien
Non performing loans [Abstract]
Non- Accrual with no Allowance for Credit Loss	0	0
Non- Accrual with an Allowance for Credit Loss	545	562
Total Non- Accrual	545	562
90+ and Still Accruing	0	0
Accrued interest excluded from total	773	588
Mortgage | Resort lending
Non performing loans [Abstract]
Non- Accrual with no Allowance for Credit Loss	0	110
Non- Accrual with an Allowance for Credit Loss	271	38
Total Non- Accrual	271	148
90+ and Still Accruing	0	0
Accrued interest excluded from total	145	125
Installment
Non performing loans [Abstract]
Accrued interest excluded from total	1,625	1,484
Installment | Boat lending
Non performing loans [Abstract]
Non- Accrual with no Allowance for Credit Loss	0	0
Non- Accrual with an Allowance for Credit Loss	264	380
Total Non- Accrual	264	380
90+ and Still Accruing	0	0
Accrued interest excluded from total	700	601
Installment | Recreational vehicle lending
Non performing loans [Abstract]
Non- Accrual with no Allowance for Credit Loss	0	0
Non- Accrual with an Allowance for Credit Loss	307	30
Total Non- Accrual	307	30
90+ and Still Accruing	0	0
Accrued interest excluded from total	653	648
Installment | Other
Non performing loans [Abstract]
Non- Accrual with no Allowance for Credit Loss	0	0
Non- Accrual with an Allowance for Credit Loss	230	188
Total Non- Accrual	230	188
90+ and Still Accruing	0	0
Accrued interest excluded from total	272	235
Non-performing TDR's
Non performing loans [Abstract]
Total Non- Performing Loans	4,715	3,721
Accrued interest excluded from total	0	0
Non-performing TDR's | Commercial | Commercial and industrial
Non performing loans [Abstract]
Total Non- Performing Loans	8	9
Non-performing TDR's | Commercial | Commercial real estate
Non performing loans [Abstract]
Total Non- Performing Loans	0	0
Non-performing TDR's | Mortgage | 1-4 family owner occupied - jumbo
Non performing loans [Abstract]
Total Non- Performing Loans	0	0
Non-performing TDR's | Mortgage | 1-4 family owner occupied - non-jumbo
Non performing loans [Abstract]
Total Non- Performing Loans	2,592	1,929
Non-performing TDR's | Mortgage | 1-4 family non-owner occupied
Non performing loans [Abstract]
Total Non- Performing Loans	498	475
Non-performing TDR's | Mortgage | 1-4 family - 2nd lien
Non performing loans [Abstract]
Total Non- Performing Loans	545	562
Non-performing TDR's | Mortgage | Resort lending
Non performing loans [Abstract]
Total Non- Performing Loans	271	148
Non-performing TDR's | Installment | Boat lending
Non performing loans [Abstract]
Total Non- Performing Loans	264	380
Non-performing TDR's | Installment | Recreational vehicle lending
Non performing loans [Abstract]
Total Non- Performing Loans	307	30
Non-performing TDR's | Installment | Other
Non performing loans [Abstract]
Total Non- Performing Loans	$ 230	$ 188