Loans and Allowance for Credit Losses on Loans - Schedule of Credit Risk Ratings by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable Recorded Investment [Line Items]
2023	$ 185,391		$ 185,391
2022	594,654		594,654
2021	293,041		293,041
2020	149,791		149,791
2019	186,043		186,043
Prior	282,013		282,013
Revolving Loans	67,404		67,404
Revolving Loans Converted to Term Loans	1,188		1,188
Total	1,759,525		1,759,525		$ 1,678,292
Current period charge-offs
2023			0
2022			457
2021			46
2020			0
2019			91
Prior			34
Revolving Loans			0
Revolving Loans Converted to Term Loans			0
Total	$ 492	$ 0	$ 628	$ 32
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Accrued interest receivable		Accrued interest receivable		Accrued interest receivable
Accrued interest receivable	$ 7,100		$ 7,100		$ 6,400
Pass
Financing Receivable Recorded Investment [Line Items]
2023	185,391		185,391
2022	589,251		589,251
2021	287,940		287,940
2020	149,791		149,791
2019	185,103		185,103
Prior	274,458		274,458
Revolving Loans	67,404		67,404
Revolving Loans Converted to Term Loans	1,188		1,188
Total	1,740,526		1,740,526		1,674,422
Special mention
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	1,783		1,783
2021	0		0
2020	0		0
2019	940		940
Prior	928		928
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	3,651		3,651		563
Substandard
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	3,620		3,620
2021	5,101		5,101
2020	0		0
2019	0		0
Prior	6,515		6,515
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	15,236		15,236		3,031
Doubtful
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	112		112
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	112		112		276
Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
2023	86,002		86,002
2022	211,294		211,294
2021	155,300		155,300
2020	97,776		97,776
2019	142,549		142,549
Prior	172,449		172,449
Revolving Loans	13,454		13,454
Revolving Loans Converted to Term Loans	0		0
Total	878,824		878,824		842,208
Current period charge-offs
2023			0
2022			457
2021			0
2020			0
2019			91
Prior			0
Revolving Loans			0
Revolving Loans Converted to Term Loans			0
Total	457	0	548	0
Commercial Real Estate | Pass
Financing Receivable Recorded Investment [Line Items]
2023	86,002		86,002
2022	210,555		210,555
2021	155,300		155,300
2020	97,776		97,776
2019	142,549		142,549
Prior	168,058		168,058
Revolving Loans	13,454		13,454
Revolving Loans Converted to Term Loans	0		0
Total	873,694		873,694		841,645
Commercial Real Estate | Special mention
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	0		0		563
Commercial Real Estate | Substandard
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	739		739
2021	0		0
2020	0		0
2019	0		0
Prior	4,391		4,391
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	5,130		5,130		0
Commercial Real Estate | Doubtful
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	0		0		0
SBA—real estate
Financing Receivable Recorded Investment [Line Items]
2023	20,487		20,487
2022	48,826		48,826
2021	31,896		31,896
2020	25,778		25,778
2019	28,840		28,840
Prior	69,752		69,752
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	225,579		225,579		221,340
Current period charge-offs
2023			0
2022			0
2021			46
2020			0
2019			0
Prior			0
Revolving Loans			0
Revolving Loans Converted to Term Loans			0
Total	35	0	46	14
SBA—real estate | Pass
Financing Receivable Recorded Investment [Line Items]
2023	20,487		20,487
2022	47,043		47,043
2021	27,044		27,044
2020	25,778		25,778
2019	27,900		27,900
Prior	67,077		67,077
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	215,329		215,329		220,348
SBA—real estate | Special mention
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	1,783		1,783
2021	0		0
2020	0		0
2019	940		940
Prior	928		928
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	3,651		3,651		0
SBA—real estate | Substandard
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	0		0
2021	4,852		4,852
2020	0		0
2019	0		0
Prior	1,747		1,747
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	6,599		6,599		992
SBA—real estate | Doubtful
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	0		0		0
SBA—non-real estate
Financing Receivable Recorded Investment [Line Items]
2023	4,306		4,306
2022	3,263		3,263
2021	240		240
2020	1,670		1,670
2019	982		982
Prior	4,114		4,114
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	14,575		14,575		13,377
Current period charge-offs
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			34
Revolving Loans			0
Revolving Loans Converted to Term Loans			0
Total	0	0	34	18
SBA—non-real estate | Pass
Financing Receivable Recorded Investment [Line Items]
2023	4,306		4,306
2022	2,623		2,623
2021	240		240
2020	1,670		1,670
2019	982		982
Prior	3,625		3,625
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	13,446		13,446		12,897
SBA—non-real estate | Special mention
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	0		0		0
SBA—non-real estate | Substandard
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	640		640
2021	0		0
2020	0		0
2019	0		0
Prior	377		377
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	1,017		1,017		480
SBA—non-real estate | Doubtful
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	112		112
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	112		112		0
C&I
Financing Receivable Recorded Investment [Line Items]
2023	11,996		11,996
2022	20,185		20,185
2021	25,264		25,264
2020	5,338		5,338
2019	4,235		4,235
Prior	2,472		2,472
Revolving Loans	53,954		53,954
Revolving Loans Converted to Term Loans	1,188		1,188
Total	124,632		124,632		116,951
Current period charge-offs
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving Loans			0
Revolving Loans Converted to Term Loans			0
Total	0	0	0	0
C&I | Pass
Financing Receivable Recorded Investment [Line Items]
2023	11,996		11,996
2022	20,185		20,185
2021	25,264		25,264
2020	5,338		5,338
2019	4,235		4,235
Prior	2,472		2,472
Revolving Loans	53,954		53,954
Revolving Loans Converted to Term Loans	1,188		1,188
Total	124,632		124,632		116,396
C&I | Special mention
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	0		0		0
C&I | Substandard
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	0		0		279
C&I | Doubtful
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	0		0		276
Home mortgage
Financing Receivable Recorded Investment [Line Items]
2023	62,587		62,587
2022	311,086		311,086
2021	80,341		80,341
2020	19,229		19,229
2019	9,335		9,335
Prior	33,211		33,211
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	515,789		515,789		482,949
Current period charge-offs
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving Loans			0
Revolving Loans Converted to Term Loans			0
Total	0	0	0	0
Home mortgage | Pass
Financing Receivable Recorded Investment [Line Items]
2023	62,587		62,587
2022	308,845		308,845
2021	80,092		80,092
2020	19,229		19,229
2019	9,335		9,335
Prior	33,211		33,211
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	513,299		513,299		481,669
Home mortgage | Special mention
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	0		0		0
Home mortgage | Substandard
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	2,241		2,241
2021	249		249
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	2,490		2,490		1,280
Home mortgage | Doubtful
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	0		0		0
Consumer
Financing Receivable Recorded Investment [Line Items]
2023	13		13
2022	0		0
2021	0		0
2020	0		0
2019	102		102
Prior	15		15
Revolving Loans	(4)		(4)
Revolving Loans Converted to Term Loans	0		0
Total	126		126		1,467
Current period charge-offs
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving Loans			0
Revolving Loans Converted to Term Loans			0
Total	0	$ 0	0	$ 0
Consumer | Pass
Financing Receivable Recorded Investment [Line Items]
2023	13		13
2022	0		0
2021	0		0
2020	0		0
2019	102		102
Prior	15		15
Revolving Loans	(4)		(4)
Revolving Loans Converted to Term Loans	0		0
Total	126		126		1,467
Consumer | Special mention
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	0		0		0
Consumer | Substandard
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	0		0		0
Consumer | Doubtful
Financing Receivable Recorded Investment [Line Items]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	$ 0		$ 0		$ 0