Loans - Risk by Loan Portfolio (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 2,170,535		$ 2,170,535		$ 2,172,063
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total Loans	2,170,535		2,170,535		2,172,063
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Total loans	268	$ 1,125	713	$ 1,358
SBA loans held for investment
Financing Receivable, Recorded Investment [Line Items]
Total loans	38,017		38,017		38,584
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current Year	1,268		1,268		1,938
One Year Prior to Current Year	1,872		1,872		8,360
Two Years Prior to Current Year	8,283		8,283		7,265
Three Years Prior to Current Year	7,396		7,396		6,783
Four Years Prior to Current Year	6,426		6,426		2,634
Five Years Prior to Current Year and Earlier	12,772		12,772		11,604
Total Loans	38,017		38,017		38,584
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
One Year Prior to Current Year					100
Four Years Prior to Current Year					113
Total loans				113	213
SBA PPP loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,734		1,734		2,318
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Two Years Prior to Current Year					2,318
Three Years Prior to Current Year	1,734		1,734
Total Loans	1,734		1,734		2,318
Commercial loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,318,208		1,318,208		1,277,460
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current Year	48,352		48,352		139,622
One Year Prior to Current Year	161,203		161,203		343,755
Two Years Prior to Current Year	340,774		340,774		183,293
Three Years Prior to Current Year	181,545		181,545		128,179
Four Years Prior to Current Year	124,865		124,865		103,132
Five Years Prior to Current Year and Earlier	363,171		363,171		282,096
Revolving Loans Amortized Cost Basis	98,298		98,298		97,383
Total Loans	1,318,208		1,318,208		1,277,460
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Two Years Prior to Current Year					150
Three Years Prior to Current Year			138
Four Years Prior to Current Year					350
Five Years Prior to Current Year and Earlier			98		252
Total loans	138		236		752
Commercial loans | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,006,092		1,006,092		986,230
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total Loans	1,006,092		1,006,092		986,230
Commercial loans | Commercial real estate construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	125,749		125,749		129,159
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total Loans	125,749		125,749		129,159
Commercial loans | Commercial & industrial
Financing Receivable, Recorded Investment [Line Items]
Total loans	147,172		147,172		128,402
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total Loans	147,172		147,172		128,402
Residential mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	624,949		624,949		631,506
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current Year	41,911		41,911		102,892
One Year Prior to Current Year	82,249		82,249		256,883
Two Years Prior to Current Year	242,937		242,937		75,300
Three Years Prior to Current Year	71,525		71,525		53,053
Four Years Prior to Current Year	48,154		48,154		31,427
Five Years Prior to Current Year and Earlier	138,173		138,173		111,951
Total Loans	624,949		624,949		631,506
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Two Years Prior to Current Year					25
Five Years Prior to Current Year and Earlier					68
Total loans					93
Consumer loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	69,280		69,280		72,676
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current Year	3,357		3,357		3,428
One Year Prior to Current Year	2,883		2,883		4,777
Two Years Prior to Current Year	4,169		4,169		3,681
Three Years Prior to Current Year	2,445		2,445		795
Four Years Prior to Current Year	721		721		2,481
Five Years Prior to Current Year and Earlier	10,935		10,935		7,763
Revolving Loans Amortized Cost Basis	44,770		44,770		49,751
Total Loans	69,280		69,280		72,676
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
One Year Prior to Current Year					26
Two Years Prior to Current Year			21		552
Three Years Prior to Current Year			49
Five Years Prior to Current Year and Earlier			130
Total loans	130	225	200	345	578
Consumer loans | Home equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	65,065		65,065		67,037
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total Loans	65,065		65,065		67,037
Consumer loans | Consumer other
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,215		4,215		5,639
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total Loans	4,215		4,215		5,639
Residential construction loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	103,188		103,188		131,277
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current Year	11,687		11,687		28,827
One Year Prior to Current Year	31,897		31,897		72,257
Two Years Prior to Current Year	49,974		49,974		25,395
Three Years Prior to Current Year	6,690		6,690		1,965
Four Years Prior to Current Year	1,708		1,708		491
Five Years Prior to Current Year and Earlier	1,232		1,232		2,342
Total Loans	103,188		103,188		131,277
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Five Years Prior to Current Year and Earlier			277		600
Revolving Loans Amortized Cost Basis					400
Total loans		$ 900	277	$ 900	1,000
Total loans held for investment including PPP
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,155,376		2,155,376		2,153,821
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current Year	106,575		106,575		276,707
One Year Prior to Current Year	280,104		280,104		686,032
Two Years Prior to Current Year	646,137		646,137		297,252
Three Years Prior to Current Year	271,335		271,335		190,775
Four Years Prior to Current Year	181,874		181,874		140,165
Five Years Prior to Current Year and Earlier	526,283		526,283		415,756
Revolving Loans Amortized Cost Basis	143,068		143,068		147,134
Total Loans	2,155,376		2,155,376		2,153,821
Performing | Residential mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	619,607		619,607		621,180
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current Year	41,911		41,911		102,892
One Year Prior to Current Year	82,249		82,249		253,919
Two Years Prior to Current Year	241,579		241,579		72,586
Three Years Prior to Current Year	68,543		68,543		51,999
Four Years Prior to Current Year	47,895		47,895		30,482
Five Years Prior to Current Year and Earlier	137,430		137,430		109,302
Total Loans	619,607		619,607		621,180
Performing | Consumer loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	69,165		69,165		72,295
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current Year	3,357		3,357		3,428
One Year Prior to Current Year	2,883		2,883		4,777
Two Years Prior to Current Year	4,169		4,169		3,681
Three Years Prior to Current Year	2,445		2,445		670
Four Years Prior to Current Year	606		606		2,481
Five Years Prior to Current Year and Earlier	10,935		10,935		7,507
Revolving Loans Amortized Cost Basis	44,770		44,770		49,751
Total Loans	69,165		69,165		72,295
Performing | Residential construction loans
Financing Receivable, Recorded Investment [Line Items]
Total loans					129,136
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current Year					28,827
One Year Prior to Current Year					72,257
Two Years Prior to Current Year					25,395
Three Years Prior to Current Year					1,418
Four Years Prior to Current Year					491
Five Years Prior to Current Year and Earlier					748
Total Loans					129,136
Nonperforming | Residential mortgage loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,342		5,342		10,326
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
One Year Prior to Current Year					2,964
Two Years Prior to Current Year	1,358		1,358		2,714
Three Years Prior to Current Year	2,982		2,982		1,054
Four Years Prior to Current Year	259		259		945
Five Years Prior to Current Year and Earlier	743		743		2,649
Total Loans	5,342		5,342		10,326
Nonperforming | Consumer loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	115		115		381
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Three Years Prior to Current Year					125
Four Years Prior to Current Year	115		115
Five Years Prior to Current Year and Earlier					256
Total Loans	115		115		381
Nonperforming | Residential construction loans
Financing Receivable, Recorded Investment [Line Items]
Total loans					2,141
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Three Years Prior to Current Year					547
Five Years Prior to Current Year and Earlier					1,594
Total Loans					2,141
Pass | SBA loans held for investment
Financing Receivable, Recorded Investment [Line Items]
Total loans	31,555		31,555		31,713
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current Year	1,268		1,268		1,938
One Year Prior to Current Year	1,872		1,872		5,339
Two Years Prior to Current Year	5,222		5,222		4,723
Three Years Prior to Current Year	4,854		4,854		6,083
Four Years Prior to Current Year	5,727		5,727		2,634
Five Years Prior to Current Year and Earlier	12,612		12,612		10,996
Total Loans	31,555		31,555		31,713
Pass | SBA PPP loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,734		1,734		2,318
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Two Years Prior to Current Year					2,318
Three Years Prior to Current Year	1,734		1,734
Total Loans	1,734		1,734		2,318
Pass | Commercial loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,304,179		1,304,179		1,262,692
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current Year	48,352		48,352		139,622
One Year Prior to Current Year	161,203		161,203		343,755
Two Years Prior to Current Year	334,416		334,416		181,419
Three Years Prior to Current Year	180,628		180,628		128,165
Four Years Prior to Current Year	124,855		124,855		101,274
Five Years Prior to Current Year and Earlier	356,822		356,822		271,469
Revolving Loans Amortized Cost Basis	97,903		97,903		96,988
Total Loans	1,304,179		1,304,179		1,262,692
Pass | Residential construction loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	102,641		102,641
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current Year	11,687		11,687
One Year Prior to Current Year	31,897		31,897
Two Years Prior to Current Year	49,974		49,974
Three Years Prior to Current Year	6,690		6,690
Four Years Prior to Current Year	1,161		1,161
Five Years Prior to Current Year and Earlier	1,232		1,232
Total Loans	102,641		102,641
Special mention | SBA loans held for investment
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,828		2,828		2,662
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
One Year Prior to Current Year					1,765
Two Years Prior to Current Year	1,805		1,805		356
Three Years Prior to Current Year	356		356		510
Four Years Prior to Current Year	510		510
Five Years Prior to Current Year and Earlier	157		157		31
Total Loans	2,828		2,828		2,662
Special mention | Commercial loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	11,829		11,829		11,203
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Two Years Prior to Current Year	6,358		6,358		1,815
Three Years Prior to Current Year	915		915
Four Years Prior to Current Year					1,570
Five Years Prior to Current Year and Earlier	4,161		4,161		7,423
Revolving Loans Amortized Cost Basis	395		395		395
Total Loans	11,829		11,829		11,203
Substandard | SBA loans held for investment
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,634		3,634		4,209
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
One Year Prior to Current Year					1,256
Two Years Prior to Current Year	1,256		1,256		2,186
Three Years Prior to Current Year	2,186		2,186		190
Four Years Prior to Current Year	189		189
Five Years Prior to Current Year and Earlier	3		3		577
Total Loans	3,634		3,634		4,209
Substandard | Commercial loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,200		2,200		3,565
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Two Years Prior to Current Year					59
Three Years Prior to Current Year	2		2		14
Four Years Prior to Current Year	10		10		288
Five Years Prior to Current Year and Earlier	2,188		2,188		3,204
Total Loans	2,200		2,200		$ 3,565
Substandard | Residential construction loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	547		547
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Four Years Prior to Current Year	547		547
Total Loans	$ 547		$ 547