Loans and Allowance for Credit Losses - Portfolio of Risk-rated Loans by Grade and by Year of Origination (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
2021	$ 506,970
2020	264,877
2019	157,720
2018	100,277
2017	74,031
Prior	310,011
Total	1,413,886	$ 1,444,050
Government guarantees
Financing Receivable, Credit Quality Indicator [Line Items]
Total		349,226
Net of government guarantees
Financing Receivable, Credit Quality Indicator [Line Items]
Total		1,094,824
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	487,700
2020	261,687
2019	153,684
2018	95,818
2017	63,119
Prior	296,998
Total	1,359,006	1,397,595
Pass | Government guarantees
Financing Receivable, Credit Quality Indicator [Line Items]
2021	145,713
2020	12,725
2019	14,429
2018	3,299
2017	306
Prior	6,562
Total	183,034	334,639
Pass | Net of government guarantees
Financing Receivable, Credit Quality Indicator [Line Items]
2021	341,987
2020	248,962
2019	139,255
2018	92,519
2017	62,813
Prior	290,436
Total	1,175,972	1,062,956
Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2021	19,270
2020	3,190
2019	4,036
2018	4,459
2017	10,912
Prior	13,013
Total	54,880	46,455
Classified | Government guarantees
Financing Receivable, Credit Quality Indicator [Line Items]
2021	7,201
2020	1,259
2019	0
2018	0
2017	0
Prior	10,571
Total	19,031	14,587
Classified | Net of government guarantees
Financing Receivable, Credit Quality Indicator [Line Items]
2021	12,069
2020	1,931
2019	4,036
2018	4,459
2017	10,912
Prior	2,442
Total	35,849	31,868
Commercial & industrial loans
Financing Receivable, Credit Quality Indicator [Line Items]
2021	246,229
2020	55,192
2019	33,410
2018	40,457
2017	23,722
Prior	49,328
Total	448,338	772,468
Commercial & industrial loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	227,376
2020	54,478
2019	29,846
2018	37,339
2017	23,205
Prior	44,554
Total	416,798	758,362
Commercial & industrial loans | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2021	18,853
2020	714
2019	3,564
2018	3,118
2017	517
Prior	4,774
Total	31,540	14,106
Commercial real estate | Owner occupied properties
Financing Receivable, Credit Quality Indicator [Line Items]
2021	81,533
2020	85,374
2019	39,254
2018	15,363
2017	14,452
Prior	64,224
Total	300,200
Commercial real estate | Owner occupied properties | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	81,533
2020	83,975
2019	39,254
2018	14,841
2017	14,452
Prior	57,717
Total	291,772
Commercial real estate | Owner occupied properties | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020	1,399
2019	0
2018	522
2017	0
Prior	6,507
Total	8,428
Commercial real estate | Non-owner occupied and multifamily properties
Financing Receivable, Credit Quality Indicator [Line Items]
2021	77,205
2020	77,961
2019	61,147
2018	34,317
2017	30,119
Prior	154,562
Total	435,311
Commercial real estate | Non-owner occupied and multifamily properties | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	77,205
2020	77,961
2019	61,147
2018	34,307
2017	19,833
Prior	154,561
Total	425,014
Commercial real estate | Non-owner occupied and multifamily properties | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020	0
2019	0
2018	10
2017	10,286
Prior	1
Total	10,297
Residential real estate | 1-4 family residential properties secured by first liens
Financing Receivable, Credit Quality Indicator [Line Items]
2021	8,173
2020	9,100
2019	4,161
2018	621
2017	1,466
Prior	9,021
Total	32,542
Residential real estate | 1-4 family residential properties secured by first liens | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	7,756
2020	8,023
2019	3,689
2018	531
2017	1,466
Prior	8,812
Total	30,277
Residential real estate | 1-4 family residential properties secured by first liens | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2021	417
2020	1,077
2019	472
2018	90
2017	0
Prior	209
Total	2,265
Residential real estate | 1-4 family residential properties secured by junior liens and revolving secured by 1-4 family first liens
Financing Receivable, Credit Quality Indicator [Line Items]
2021	5,806
2020	2,535
2019	3,229
2018	3,723
2017	259
Prior	4,058
Total	19,610
Residential real estate | 1-4 family residential properties secured by junior liens and revolving secured by 1-4 family first liens | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	5,806
2020	2,535
2019	3,229
2018	3,464
2017	259
Prior	4,046
Total	19,339
Residential real estate | 1-4 family residential properties secured by junior liens and revolving secured by 1-4 family first liens | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020	0
2019	0
2018	259
2017	0
Prior	12
Total	271
Residential real estate | 1-4 family residential construction loans
Financing Receivable, Credit Quality Indicator [Line Items]
2021	21,409
2020	1,056
2019	1,707
2018	62
2017	109
Prior	11,879
Total	36,222
Residential real estate | 1-4 family residential construction loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	21,409
2020	1,056
2019	1,707
2018	62
2017	0
Prior	11,879
Total	36,113
Residential real estate | 1-4 family residential construction loans | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	109
Prior	0
Total	109
Other construction, land development and raw land loans
Financing Receivable, Credit Quality Indicator [Line Items]
2021	39,624
2020	26,458
2019	11,044
2018	3,775
2017	139
Prior	7,054
Total	88,094
Other construction, land development and raw land loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	39,624
2020	26,458
2019	11,044
2018	3,315
2017	139
Prior	5,544
Total	86,124
Other construction, land development and raw land loans | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020	0
2019	0
2018	460
2017	0
Prior	1,510
Total	1,970
Obligations of states and political subdivisions in the US
Financing Receivable, Credit Quality Indicator [Line Items]
2021	4,120
2020	812
2019	1,875
2018	343
2017	2,733
Prior	6,520
Total	16,403
Obligations of states and political subdivisions in the US | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	4,120
2020	812
2019	1,875
2018	343
2017	2,733
Prior	6,520
Total	16,403
Obligations of states and political subdivisions in the US | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	0
Total	0
Agricultural production, including commercial fishing
Financing Receivable, Credit Quality Indicator [Line Items]
2021	19,970
2020	3,929
2019	810
2018	1,118
2017	741
Prior	1,391
Total	27,959
Agricultural production, including commercial fishing | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	19,970
2020	3,929
2019	810
2018	1,118
2017	741
Prior	1,391
Total	27,959
Agricultural production, including commercial fishing | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	0
Total	0
Consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
2021	873
2020	815
2019	653
2018	403
2017	291
Prior	1,766
Total	4,801
Consumer loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	873
2020	815
2019	653
2018	403
2017	291
Prior	1,766
Total	4,801
Consumer loans | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	0
Total	0
Other loans
Financing Receivable, Credit Quality Indicator [Line Items]
2021	2,028
2020	1,645
2019	430
2018	95
2017	0
Prior	208
Total	4,406	0
Other loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	2,028
2020	1,645
2019	430
2018	95
2017	0
Prior	208
Total	4,406
Other loans | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	0
Total	$ 0
Real estate construction one-to-four family
Financing Receivable, Credit Quality Indicator [Line Items]
Total		38,180
Real estate construction one-to-four family | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total		37,093
Real estate construction one-to-four family | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Total		1,087
Real estate construction other
Financing Receivable, Credit Quality Indicator [Line Items]
Total		79,403
Real estate construction other | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total		79,403
Real estate construction other | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Total		0
Real estate term owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Total		162,724
Real estate term owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total		152,734
Real estate term owner occupied | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Total		9,990
Real estate term non-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Total		307,247
Real estate term non-owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total		289,555
Real estate term non-owner occupied | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Total		17,692
Real estate term other
Financing Receivable, Credit Quality Indicator [Line Items]
Total		46,230
Real estate term other | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total		42,900
Real estate term other | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Total		3,330
Consumer secured by 1st deeds of trust
Financing Receivable, Credit Quality Indicator [Line Items]
Total		15,548
Consumer secured by 1st deeds of trust | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total		15,404
Consumer secured by 1st deeds of trust | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Total		144
Consumer other
Financing Receivable, Credit Quality Indicator [Line Items]
Total		22,250
Consumer other | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total		22,144
Consumer other | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Total		$ 106