Loans, Aging Analysis of Loans by Class (Details) - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020
Aging analysis of loans by class [Abstract]
Total loans		$ 2,784,224
Total recorded investment	[1]		$ 2,742,577
Accrued interest excluded from total		8,496
Accrued interest included in recorded investment	[1]		8,899
Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		3,805	12,817
Accrued interest excluded from total		49
Accrued interest included in recorded investment			147
Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		881	1,446
Accrued interest excluded from total		15
Accrued interest included in recorded investment			22
Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		2,482	3,008
Accrued interest excluded from total		0
Accrued interest included in recorded investment			0
Loans Past Due Total [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		7,168	17,271
Accrued interest excluded from total		64
Accrued interest included in recorded investment			169
Loans Not Past Due [Member]
Aging analysis of loans by class [Abstract]
Loans not Past Due		2,777,056	2,725,306
Accrued interest excluded from total		8,432
Accrued interest included in recorded investment			8,730
Commercial [Member]
Aging analysis of loans by class [Abstract]
Total loans		1,301,223
Total recorded investment	[1]		1,245,951
Accrued interest excluded from total		3,438
Accrued interest included in recorded investment	[1]		3,536
Commercial [Member] | Commercial and Industrial [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		197	5,204
Loans not Past Due		728,971	671,115
Total loans		729,168
Total recorded investment			676,319
Accrued interest excluded from total		2,342
Commercial [Member] | Commercial and Industrial [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		87	5,003
Commercial [Member] | Commercial and Industrial [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		0	131
Commercial [Member] | Commercial and Industrial [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		110	70
Commercial [Member] | Commercial Real Estate [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		0	2,600
Loans not Past Due		572,055	567,032
Total loans		572,055
Total recorded investment			569,632
Accrued interest excluded from total		1,096
Commercial [Member] | Commercial Real Estate [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		0	2,600
Commercial [Member] | Commercial Real Estate [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		0	0
Commercial [Member] | Commercial Real Estate [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		0	0
Mortgage [Member]
Aging analysis of loans by class [Abstract]
Total loans	[2]	999,982
Total recorded investment	[1]		1,020,104
Accrued interest excluded from total	[2]	3,860
Accrued interest included in recorded investment	[1]		4,178
Mortgage [Member] | 1-4 Family Owner Occupied - Jumbo [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		1,439	1,384
Loans not Past Due		446,426	438,794
Total loans	[2]	447,865
Total recorded investment			440,178
Accrued interest excluded from total	[2]	1,125
Accrued interest included in recorded investment			1,301
Mortgage [Member] | 1-4 Family Owner Occupied - Jumbo [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		819	761
Mortgage [Member] | 1-4 Family Owner Occupied - Jumbo [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		0	0
Mortgage [Member] | 1-4 Family Owner Occupied - Jumbo [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		620	623
Mortgage [Member] | 1-4 Family Owner Occupied - Non-jumbo [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		1,652	2,843
Loans not Past Due		249,846	264,730
Total loans	[2]	251,498
Total recorded investment			267,573
Accrued interest excluded from total	[2]	1,686
Accrued interest included in recorded investment			1,641
Mortgage [Member] | 1-4 Family Owner Occupied - Non-jumbo [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		1,033	1,888
Mortgage [Member] | 1-4 Family Owner Occupied - Non-jumbo [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		265	453
Mortgage [Member] | 1-4 Family Owner Occupied - Non-jumbo [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		354	502
Mortgage [Member] | 1-4 Family Non-owner Occupied [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		1,522	1,799
Loans not Past Due		156,471	157,977
Total loans	[2]	157,993
Total recorded investment			159,776
Accrued interest excluded from total	[2]	512
Accrued interest included in recorded investment			587
Mortgage [Member] | 1-4 Family Non-owner Occupied [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		1,019	1,184
Mortgage [Member] | 1-4 Family Non-owner Occupied [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		102	139
Mortgage [Member] | 1-4 Family Non-owner Occupied [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		401	476
Mortgage [Member] | 1-4 Family - 2nd Lien [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		996	1,670
Loans not Past Due		85,944	92,860
Total loans	[2]	86,940
Total recorded investment			94,530
Accrued interest excluded from total	[2]	298
Accrued interest included in recorded investment			373
Mortgage [Member] | 1-4 Family - 2nd Lien [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		351	710
Mortgage [Member] | 1-4 Family - 2nd Lien [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		140	228
Mortgage [Member] | 1-4 Family - 2nd Lien [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		505	732
Mortgage [Member] | Resort Lending [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		507	585
Loans not Past Due		55,179	57,462
Total loans	[2]	55,686
Total recorded investment			58,047
Accrued interest excluded from total	[2]	239
Accrued interest included in recorded investment			276
Mortgage [Member] | Resort Lending [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		32	32
Mortgage [Member] | Resort Lending [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		188	195
Mortgage [Member] | Resort Lending [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		287	358
Installment [Member]
Aging analysis of loans by class [Abstract]
Total loans	[2]	483,019
Total recorded investment	[1]		476,522
Accrued interest excluded from total	[2]	1,198
Accrued interest included in recorded investment	[1]		1,185
Installment [Member] | Boat Lending [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		275	196
Loans not Past Due		211,053	207,317
Total loans	[2]	211,328
Total recorded investment			207,513
Accrued interest excluded from total	[2]	481
Accrued interest included in recorded investment			572
Installment [Member] | Boat Lending [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		168	95
Installment [Member] | Boat Lending [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		103	101
Installment [Member] | Boat Lending [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		4	0
Installment [Member] | Recreational Vehicle Lending [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		94	292
Loans not Past Due		173,179	169,282
Total loans	[2]	173,273
Total recorded investment			169,574
Accrued interest excluded from total	[2]	393
Accrued interest included in recorded investment			457
Installment [Member] | Recreational Vehicle Lending [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		64	207
Installment [Member] | Recreational Vehicle Lending [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		14	37
Installment [Member] | Recreational Vehicle Lending [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		16	48
Installment [Member] | Other [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		486	698
Loans not Past Due		97,932	98,737
Total loans	[2]	98,418
Total recorded investment			99,435
Accrued interest excluded from total	[2]	324
Accrued interest included in recorded investment			156
Installment [Member] | Other [Member] | Loans Past Due, 30-59 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		232	337
Installment [Member] | Other [Member] | Loans Past Due, 60-89 days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		69	162
Installment [Member] | Other [Member] | Loans Past Due, 90+ days [Member]
Aging analysis of loans by class [Abstract]
Loans Past Due		$ 185	$ 199

[1] Beginning January 1, 2021, calculation is based on CECL methodology. Prior to January 1, 2021, calculation was based on the probable incurred loss methodology.

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