Loans - Aging Analysis of Loans by Class (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	$ 3,631,114	$ 3,465,352
Accrued interest excluded from total	11,195	10,009
Financial asset, past due, total
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	8,012	5,983
Accrued interest excluded from total	58	34
Financial Asset, 30 to 59 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	3,913	3,317
Accrued interest excluded from total	33	27
Financial Asset, 60 to 89 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	2,159	928
Accrued interest excluded from total	25	7
Financial Asset, Equal to or Greater than 90 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	1,940	1,738
Accrued interest excluded from total	0	0
Financial Asset, Not Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	3,623,102	3,459,369
Accrued interest excluded from total	11,137	9,975
Commercial
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	1,538,162	1,466,853
Accrued interest excluded from total	5,123	4,409
Commercial | Commercial and industrial
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	745,658	732,463
Accrued interest excluded from total	2,476	2,046
Commercial | Commercial and industrial | Financial asset, past due, total
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	97	38
Commercial | Commercial and industrial | Financial Asset, 30 to 59 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	64	0
Commercial | Commercial and industrial | Financial Asset, 60 to 89 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	0	0
Commercial | Commercial and industrial | Financial Asset, Equal to or Greater than 90 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	33	38
Commercial | Commercial and industrial | Financial Asset, Not Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	745,561	732,425
Commercial | Commercial real estate
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	792,504	734,390
Accrued interest excluded from total	2,647	2,363
Commercial | Commercial real estate | Financial asset, past due, total
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	0	0
Commercial | Commercial real estate | Financial Asset, 30 to 59 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	0	0
Commercial | Commercial real estate | Financial Asset, 60 to 89 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	0	0
Commercial | Commercial real estate | Financial Asset, Equal to or Greater than 90 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	0	0
Commercial | Commercial real estate | Financial Asset, Not Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	792,504	734,390
Mortgage
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	1,441,398	1,368,409
Accrued interest excluded from total	4,520	4,116
Mortgage | 1-4 family owner occupied - jumbo
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	812,587	752,563
Accrued interest excluded from total	2,093	1,892
Mortgage | 1-4 family owner occupied - jumbo | Financial asset, past due, total
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	547	0
Mortgage | 1-4 family owner occupied - jumbo | Financial Asset, 30 to 59 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	0	0
Mortgage | 1-4 family owner occupied - jumbo | Financial Asset, 60 to 89 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	547	0
Mortgage | 1-4 family owner occupied - jumbo | Financial Asset, Equal to or Greater than 90 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	0	0
Mortgage | 1-4 family owner occupied - jumbo | Financial Asset, Not Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	812,040	752,563
Mortgage | 1-4 family owner occupied - non-jumbo
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	299,418	285,632
Accrued interest excluded from total	962	953
Mortgage | 1-4 family owner occupied - non-jumbo | Financial asset, past due, total
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	4,200	2,790
Mortgage | 1-4 family owner occupied - non-jumbo | Financial Asset, 30 to 59 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	1,820	1,400
Mortgage | 1-4 family owner occupied - non-jumbo | Financial Asset, 60 to 89 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	1,120	521
Mortgage | 1-4 family owner occupied - non-jumbo | Financial Asset, Equal to or Greater than 90 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	1,260	869
Mortgage | 1-4 family owner occupied - non-jumbo | Financial Asset, Not Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	295,218	282,842
Mortgage | 1-4 family non-owner occupied
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	180,937	183,100
Accrued interest excluded from total	608	558
Mortgage | 1-4 family non-owner occupied | Financial asset, past due, total
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	216	354
Mortgage | 1-4 family non-owner occupied | Financial Asset, 30 to 59 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	58	61
Mortgage | 1-4 family non-owner occupied | Financial Asset, 60 to 89 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	0	93
Mortgage | 1-4 family non-owner occupied | Financial Asset, Equal to or Greater than 90 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	158	200
Mortgage | 1-4 family non-owner occupied | Financial Asset, Not Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	180,721	182,746
Mortgage | 1-4 family - 2nd lien
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	110,286	105,277
Accrued interest excluded from total	717	588
Mortgage | 1-4 family - 2nd lien | Financial asset, past due, total
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	627	574
Mortgage | 1-4 family - 2nd lien | Financial Asset, 30 to 59 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	357	420
Mortgage | 1-4 family - 2nd lien | Financial Asset, 60 to 89 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	189	107
Mortgage | 1-4 family - 2nd lien | Financial Asset, Equal to or Greater than 90 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	81	47
Mortgage | 1-4 family - 2nd lien | Financial Asset, Not Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	109,659	104,703
Mortgage | Resort lending
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	38,170	41,837
Accrued interest excluded from total	140	125
Mortgage | Resort lending | Financial asset, past due, total
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	100	202
Mortgage | Resort lending | Financial Asset, 30 to 59 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	0	54
Mortgage | Resort lending | Financial Asset, 60 to 89 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	0	0
Mortgage | Resort lending | Financial Asset, Equal to or Greater than 90 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	100	148
Mortgage | Resort lending | Financial Asset, Not Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	38,070	41,635
Installment
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	651,554	630,090
Accrued interest excluded from total	1,552	1,484
Installment | Boat lending
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	274,766	252,965
Accrued interest excluded from total	660	601
Installment | Boat lending | Financial asset, past due, total
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	763	837
Installment | Boat lending | Financial Asset, 30 to 59 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	557	528
Installment | Boat lending | Financial Asset, 60 to 89 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	6	14
Installment | Boat lending | Financial Asset, Equal to or Greater than 90 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	200	295
Installment | Boat lending | Financial Asset, Not Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	274,003	252,128
Installment | Recreational vehicle lending
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	268,303	270,673
Accrued interest excluded from total	634	648
Installment | Recreational vehicle lending | Financial asset, past due, total
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	1,006	804
Installment | Recreational vehicle lending | Financial Asset, 30 to 59 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	686	639
Installment | Recreational vehicle lending | Financial Asset, 60 to 89 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	230	147
Installment | Recreational vehicle lending | Financial Asset, Equal to or Greater than 90 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	90	18
Installment | Recreational vehicle lending | Financial Asset, Not Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	267,297	269,869
Installment | Other
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	108,485	106,452
Accrued interest excluded from total	258	235
Installment | Other | Financial asset, past due, total
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	456	384
Installment | Other | Financial Asset, 30 to 59 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	371	215
Installment | Other | Financial Asset, 60 to 89 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	67	46
Installment | Other | Financial Asset, Equal to or Greater than 90 Days Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	18	123
Installment | Other | Financial Asset, Not Past Due
Aging analysis of loans by class [Abstract]
Financing receivable, before allowance for credit loss	$ 108,029	$ 106,068