Loans - Amortized Cost of Collateral-dependent Loans by Class (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	$ 3,509,809	$ 3,465,352
Allowance for Credit Losses	50,550	52,435	$ 45,627	$ 47,252
Accrued interest excluded from total	10,146	10,009
Real Estate
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	6,145	10,553
Accrued interest excluded from total	28	40
Other
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	2,737	1,764
Accrued interest excluded from total	31	6
Allowance for Credit Losses
Financing Receivable, Past Due [Line Items]
Allowance for Credit Losses	871	2,074
Commercial
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	1,471,293	1,466,853
Allowance for Credit Losses	13,533	13,817	10,744	11,519
Accrued interest excluded from total	4,587	4,409
Commercial | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	739,287	732,463
Accrued interest excluded from total	2,261	2,046
Commercial | Commercial and industrial | Real Estate
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	3,606	748
Commercial | Commercial and industrial | Other
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	2,316	1,309
Commercial | Commercial and industrial | Allowance for Credit Losses
Financing Receivable, Past Due [Line Items]
Allowance for Credit Losses	210	197
Commercial | Commercial real estate
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	732,006	734,390
Accrued interest excluded from total	2,326	2,363
Commercial | Commercial real estate | Real Estate
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	276	7,329
Commercial | Commercial real estate | Other
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	0	0
Commercial | Commercial real estate | Allowance for Credit Losses
Financing Receivable, Past Due [Line Items]
Allowance for Credit Losses	43	1,243
Mortgage
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	1,408,229	1,368,409
Allowance for Credit Losses	20,113	21,633	19,208	19,221
Accrued interest excluded from total	4,094	4,116
Mortgage | 1-4 family owner occupied - jumbo
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	786,446	752,563
Accrued interest excluded from total	1,906	1,892
Mortgage | 1-4 family owner occupied - jumbo | Real Estate
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	0	0
Mortgage | 1-4 family owner occupied - jumbo | Other
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	0	0
Mortgage | 1-4 family owner occupied - jumbo | Allowance for Credit Losses
Financing Receivable, Past Due [Line Items]
Allowance for Credit Losses	0	0
Mortgage | 1-4 family owner occupied - non-jumbo
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	294,983	285,632
Accrued interest excluded from total	883	953
Mortgage | 1-4 family owner occupied - non-jumbo | Real Estate
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	1,519	1,721
Mortgage | 1-4 family owner occupied - non-jumbo | Other
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	0	0
Mortgage | 1-4 family owner occupied - non-jumbo | Allowance for Credit Losses
Financing Receivable, Past Due [Line Items]
Allowance for Credit Losses	235	229
Mortgage | 1-4 family non-owner occupied
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	180,863	183,100
Accrued interest excluded from total	552	558
Mortgage | 1-4 family non-owner occupied | Real Estate
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	461	233
Mortgage | 1-4 family non-owner occupied | Other
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	0	0
Mortgage | 1-4 family non-owner occupied | Allowance for Credit Losses
Financing Receivable, Past Due [Line Items]
Allowance for Credit Losses	171	29
Mortgage | 1-4 family - 2nd lien
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	106,022	105,277
Accrued interest excluded from total	622	588
Mortgage | 1-4 family - 2nd lien | Real Estate
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	170	368
Mortgage | 1-4 family - 2nd lien | Other
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	0	0
Mortgage | 1-4 family - 2nd lien | Allowance for Credit Losses
Financing Receivable, Past Due [Line Items]
Allowance for Credit Losses	60	203
Mortgage | Resort lending
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	39,915	41,837
Accrued interest excluded from total	131	125
Mortgage | Resort lending | Real Estate
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	107	148
Mortgage | Resort lending | Other
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	0	0
Mortgage | Resort lending | Allowance for Credit Losses
Financing Receivable, Past Due [Line Items]
Allowance for Credit Losses	0	14
Installment
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	630,287	630,090
Allowance for Credit Losses	4,054	4,290	$ 3,604	$ 3,749
Accrued interest excluded from total	1,465	1,484
Installment | Boat lending
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	257,244	252,965
Accrued interest excluded from total	597	601
Installment | Boat lending | Real Estate
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	0	0
Installment | Boat lending | Other
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	217	297
Installment | Boat lending | Allowance for Credit Losses
Financing Receivable, Past Due [Line Items]
Allowance for Credit Losses	77	101
Installment | Recreational vehicle lending
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	265,579	270,673
Accrued interest excluded from total	624	648
Installment | Recreational vehicle lending | Real Estate
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	0	0
Installment | Recreational vehicle lending | Other
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	112	30
Installment | Recreational vehicle lending | Allowance for Credit Losses
Financing Receivable, Past Due [Line Items]
Allowance for Credit Losses	40	11
Installment | Other
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	107,464	106,452
Accrued interest excluded from total	244	235
Installment | Other | Real Estate
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	6	6
Installment | Other | Other
Financing Receivable, Past Due [Line Items]
Financing receivable, before allowance for credit loss	92	128
Installment | Other | Allowance for Credit Losses
Financing Receivable, Past Due [Line Items]
Allowance for Credit Losses	$ 35	$ 47