Loans and Allowance for Credit Losses - Aging of Contractually Past Due Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Total Past Due	$ 5,378	$ 10,950
Current	1,543,546	1,433,100
Total portfolio loans	1,548,924	1,444,050
Greater Than 90 Days Past Due Still Accruing	0	449
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	712	2,929
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	42	229
Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	4,624	7,792
Commercial & industrial loans
Financing Receivable, Past Due [Line Items]
Total Past Due	1,463
Current	694,334
Total portfolio loans	695,797	772,468
Greater Than 90 Days Past Due Still Accruing	0
Commercial & industrial loans | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		3,146
Current		609,108
Total portfolio loans		612,254
Greater Than 90 Days Past Due Still Accruing		0
Commercial & industrial loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	141
Commercial & industrial loans | 30-59 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		242
Commercial & industrial loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Commercial & industrial loans | 60-89 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		229
Commercial & industrial loans | Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,322
Commercial & industrial loans | Greater Than 90 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		2,675
Commercial real estate | Owner occupied properties
Financing Receivable, Past Due [Line Items]
Total Past Due	1,501
Current	242,915
Total portfolio loans	244,416
Greater Than 90 Days Past Due Still Accruing	0
Commercial real estate | Owner occupied properties | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		4,662
Current		228,658
Total portfolio loans		233,320
Greater Than 90 Days Past Due Still Accruing		449
Commercial real estate | Owner occupied properties | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Commercial real estate | Owner occupied properties | 30-59 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		2,203
Commercial real estate | Owner occupied properties | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Commercial real estate | Owner occupied properties | 60-89 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Commercial real estate | Owner occupied properties | Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,501
Commercial real estate | Owner occupied properties | Greater Than 90 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		2,459
Commercial real estate | Non-owner occupied and multifamily properties
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Current	399,982
Total portfolio loans	399,982
Greater Than 90 Days Past Due Still Accruing	0
Commercial real estate | Non-owner occupied and multifamily properties | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Current		392,452
Total portfolio loans		392,452
Greater Than 90 Days Past Due Still Accruing		0
Commercial real estate | Non-owner occupied and multifamily properties | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Commercial real estate | Non-owner occupied and multifamily properties | 30-59 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Commercial real estate | Non-owner occupied and multifamily properties | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Commercial real estate | Non-owner occupied and multifamily properties | 60-89 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Commercial real estate | Non-owner occupied and multifamily properties | Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Commercial real estate | Non-owner occupied and multifamily properties | Greater Than 90 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Residential | 1-4 family residential properties secured by first liens
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Current	31,930
Total portfolio loans	31,930
Greater Than 90 Days Past Due Still Accruing	0
Residential | 1-4 family residential properties secured by first liens | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		446
Current		32,969
Total portfolio loans		33,415
Greater Than 90 Days Past Due Still Accruing		0
Residential | 1-4 family residential properties secured by first liens | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Residential | 1-4 family residential properties secured by first liens | 30-59 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		446
Residential | 1-4 family residential properties secured by first liens | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Residential | 1-4 family residential properties secured by first liens | 60-89 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Residential | 1-4 family residential properties secured by first liens | Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Residential | 1-4 family residential properties secured by first liens | Greater Than 90 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Residential | 1-4 family residential properties secured by junior liens and revolving secured by 1-4 family first liens
Financing Receivable, Past Due [Line Items]
Total Past Due	226
Current	17,310
Total portfolio loans	17,536
Greater Than 90 Days Past Due Still Accruing	0
Residential | 1-4 family residential properties secured by junior liens and revolving secured by 1-4 family first liens | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		177
Current		18,059
Total portfolio loans		18,236
Greater Than 90 Days Past Due Still Accruing		0
Residential | 1-4 family residential properties secured by junior liens and revolving secured by 1-4 family first liens | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	45
Residential | 1-4 family residential properties secured by junior liens and revolving secured by 1-4 family first liens | 30-59 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		38
Residential | 1-4 family residential properties secured by junior liens and revolving secured by 1-4 family first liens | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	42
Residential | 1-4 family residential properties secured by junior liens and revolving secured by 1-4 family first liens | 60-89 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Residential | 1-4 family residential properties secured by junior liens and revolving secured by 1-4 family first liens | Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	139
Residential | 1-4 family residential properties secured by junior liens and revolving secured by 1-4 family first liens | Greater Than 90 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		139
Residential | 1-4 family residential construction loans
Financing Receivable, Past Due [Line Items]
Total Past Due	643
Current	34,408
Total portfolio loans	35,051
Greater Than 90 Days Past Due Still Accruing	0
Residential | 1-4 family residential construction loans | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		702
Current		31,798
Total portfolio loans		32,500
Greater Than 90 Days Past Due Still Accruing		0
Residential | 1-4 family residential construction loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	526
Residential | 1-4 family residential construction loans | 30-59 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Residential | 1-4 family residential construction loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Residential | 1-4 family residential construction loans | 60-89 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Residential | 1-4 family residential construction loans | Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	117
Residential | 1-4 family residential construction loans | Greater Than 90 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		702
Other construction, land development and raw land loans
Financing Receivable, Past Due [Line Items]
Total Past Due	1,545
Current	85,029
Total portfolio loans	86,574
Greater Than 90 Days Past Due Still Accruing	0
Other construction, land development and raw land loans | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		1,545
Current		81,918
Total portfolio loans		83,463
Greater Than 90 Days Past Due Still Accruing		0
Other construction, land development and raw land loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Other construction, land development and raw land loans | 30-59 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Other construction, land development and raw land loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Other construction, land development and raw land loans | 60-89 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Other construction, land development and raw land loans | Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,545
Other construction, land development and raw land loans | Greater Than 90 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		1,545
Obligations of states and political subdivisions in the US
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Current	15,795
Total portfolio loans	15,795
Greater Than 90 Days Past Due Still Accruing	0
Obligations of states and political subdivisions in the US | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Current		15,318
Total portfolio loans		15,318
Greater Than 90 Days Past Due Still Accruing		0
Obligations of states and political subdivisions in the US | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Obligations of states and political subdivisions in the US | 30-59 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Obligations of states and political subdivisions in the US | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Obligations of states and political subdivisions in the US | 60-89 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Obligations of states and political subdivisions in the US | Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Obligations of states and political subdivisions in the US | Greater Than 90 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Agricultural production, including commercial fishing
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Current	12,901
Total portfolio loans	12,901
Greater Than 90 Days Past Due Still Accruing	0
Agricultural production, including commercial fishing | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Current		12,968
Total portfolio loans		12,968
Greater Than 90 Days Past Due Still Accruing		0
Agricultural production, including commercial fishing | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Agricultural production, including commercial fishing | 30-59 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Agricultural production, including commercial fishing | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Agricultural production, including commercial fishing | 60-89 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Agricultural production, including commercial fishing | Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Agricultural production, including commercial fishing | Greater Than 90 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Consumer
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Current	5,563
Total portfolio loans	5,563
Greater Than 90 Days Past Due Still Accruing	0
Consumer | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		272
Current		5,462
Total portfolio loans		5,734
Greater Than 90 Days Past Due Still Accruing		0
Consumer | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Consumer | 30-59 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Consumer | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Consumer | 60-89 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Consumer | Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Consumer | Greater Than 90 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		272
Other loans
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Current	3,379
Total portfolio loans	3,379	0
Greater Than 90 Days Past Due Still Accruing	0
Other loans | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Current		4,390
Total portfolio loans		4,390
Greater Than 90 Days Past Due Still Accruing		0
Other loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Other loans | 30-59 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Other loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Other loans | 60-89 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		0
Other loans | Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	$ 0
Other loans | Greater Than 90 Days Past Due | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total Past Due		$ 0