Loans, Aging Analysis of Loans by Class (Details) - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019
Aging analysis of loans by class [Abstract]
Total loans recorded investment		$ 2,864,473	$ 2,733,370
Accrued interest included in recorded investment		8,994	8,347
Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		5,434	7,449
Accrued interest included in recorded investment		102	74
Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		1,349	2,936
Accrued interest included in recorded investment		17	34
Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		3,455	4,091
Accrued interest included in recorded investment		0	0
Loans Past Due Total [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		10,238	14,476
Accrued interest included in recorded investment		119	108
Loans Not Past Due [Member]
Aging analysis of loans by class [Abstract]
Loans not Past Due		2,854,235	2,718,894
Accrued interest included in recorded investment		8,875	8,239
Commercial [Member]
Aging analysis of loans by class [Abstract]
Total loans recorded investment		1,355,212	1,169,693
Accrued interest included in recorded investment		3,422	2,998
Commercial [Member] | Commercial and Industrial [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		495	391
Loans not Past Due		763,757	564,480
Total loans recorded investment		764,252	564,871
Commercial [Member] | Commercial and Industrial [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		0	0
Commercial [Member] | Commercial and Industrial [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		0	289
Commercial [Member] | Commercial and Industrial [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		495	102
Commercial [Member] | Commercial Real Estate [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		130	912
Loans not Past Due		590,830	603,910
Total loans recorded investment		590,960	604,822
Commercial [Member] | Commercial Real Estate [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		130	177
Commercial [Member] | Commercial Real Estate [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		0	0
Commercial [Member] | Commercial Real Estate [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		0	735
Mortgage [Member]
Aging analysis of loans by class [Abstract]
Total loans recorded investment		1,028,433	1,103,066
Accrued interest included in recorded investment	[1]	4,397	4,155
Mortgage [Member] | 1-4 Family Owner Occupied - Jumbo [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		1,944	2,794
Loans not Past Due		437,294	398,759
Total loans recorded investment		439,238	401,553
Accrued interest included in recorded investment	[1]	1,288	1,139
Mortgage [Member] | 1-4 Family Owner Occupied - Jumbo [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		1,312	1,757
Mortgage [Member] | 1-4 Family Owner Occupied - Jumbo [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		0	1,037
Mortgage [Member] | 1-4 Family Owner Occupied - Jumbo [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		632	0
Mortgage [Member] | 1-4 Family Owner Occupied - Non-jumbo [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		2,035	4,911
Loans not Past Due		247,086	342,349
Total loans recorded investment		249,121	347,260
Accrued interest included in recorded investment	[1]	1,891	1,662
Mortgage [Member] | 1-4 Family Owner Occupied - Non-jumbo [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		1,053	2,672
Mortgage [Member] | 1-4 Family Owner Occupied - Non-jumbo [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		372	852
Mortgage [Member] | 1-4 Family Owner Occupied - Non-jumbo [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		610	1,387
Mortgage [Member] | 1-4 Non-owner Occupied [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		1,763	1,454
Loans not Past Due		177,101	168,083
Total loans recorded investment		178,864	169,537
Accrued interest included in recorded investment	[1]	590	586
Mortgage [Member] | 1-4 Non-owner Occupied [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		1,336	695
Mortgage [Member] | 1-4 Non-owner Occupied [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		60	136
Mortgage [Member] | 1-4 Non-owner Occupied [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		367	623
Mortgage [Member] | 1-4 Family - 2nd Lien [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		1,268	1,385
Loans not Past Due		99,427	115,157
Total loans recorded investment		100,695	116,542
Accrued interest included in recorded investment	[1]	363	502
Mortgage [Member] | 1-4 Family - 2nd Lien [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		472	909
Mortgage [Member] | 1-4 Family - 2nd Lien [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		251	90
Mortgage [Member] | 1-4 Family - 2nd Lien [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		545	386
Mortgage [Member] | Resort Lending [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		1,107	982
Loans not Past Due		59,408	67,192
Total loans recorded investment		60,515	68,174
Accrued interest included in recorded investment	[1]	265	266
Mortgage [Member] | Resort Lending [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		273	364
Mortgage [Member] | Resort Lending [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		443	53
Mortgage [Member] | Resort Lending [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		391	565
Installment [Member]
Aging analysis of loans by class [Abstract]
Total loans recorded investment		480,828	460,611
Accrued interest included in recorded investment	[1]	1,175	1,194
Installment [Member] | Boat Lending [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		383	532
Loans not Past Due		211,353	202,750
Total loans recorded investment		211,736	203,282
Accrued interest included in recorded investment	[1]	471	490
Installment [Member] | Boat Lending [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		213	337
Installment [Member] | Boat Lending [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		38	107
Installment [Member] | Boat Lending [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		132	88
Installment [Member] | Recreational Vehicle Lending [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		441	261
Loans not Past Due		168,211	153,184
Total loans recorded investment		168,652	153,445
Accrued interest included in recorded investment	[1]	381	378
Installment [Member] | Recreational Vehicle Lending [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		364	161
Installment [Member] | Recreational Vehicle Lending [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		19	97
Installment [Member] | Recreational Vehicle Lending [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		58	3
Installment [Member] | Other [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		672	854
Loans not Past Due		99,768	103,030
Total loans recorded investment		100,440	103,884
Accrued interest included in recorded investment	[1]	323	326
Installment [Member] | Other [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		281	377
Installment [Member] | Other [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		166	275
Installment [Member] | Other [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Total recorded investment		$ 225	$ 202

[1] Credit scores have been updated within the last twelve months.