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Loans - Schedule of Loan Ratings by Loan Class (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	$ 4,198,283		$ 4,198,283		$ 4,038,825
Accrued interest excluded from total	14,157		14,157		13,461
Current period gross charge-offs	1,203	$ 1,018	2,776	$ 2,720
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	277,014		277,014		338,456
Financing receivable, year two, originated, fiscal year before current fiscal year	364,626		364,626		378,767
Financing receivable, year three, originated, two years before current fiscal year	334,426		334,426		314,851
Financing receivable, year four, originated, three years before current fiscal year	298,449		298,449		157,670
Financing receivable, year five, originated, four years before current fiscal year	131,942		131,942		128,800
Financing receivable, originated, more than five years before current fiscal year	350,326		350,326		278,672
Revolving Loans Amortized Cost Basis	368,270		368,270		340,148
Total loans	2,125,053		2,125,053		1,937,364
Accrued interest, current fiscal year	830		830		1,220
Accrued interest, fiscal year before current	1,131		1,131		1,110
Accrued interest, two years before current	985		985		989
Accrued interest, three years before current	916		916		383
Accrued interest, four years before current	289		289		473
Accrued interest, more than five years before current fiscal year	1,279		1,279		999
Accrued interest, revolving	1,422		1,422		1,322
Accrued interest excluded from total	6,852		6,852		6,496
Gross charge-offs, current fiscal year			0		0
Gross charge-offs, fiscal year before current			0		0
Gross charge-offs, two years before current			78		0
Gross charge-offs, three years before current			0		0
Gross charge-offs, four years before current			0		0
Gross charge-offs, more than five years before current			0		0
Gross charge-offs, revolving			0		0
Current period gross charge-offs	0	$ 0	78	$ 0	0
Commercial | Non-watch (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	268,636		268,636		325,415
Financing receivable, year two, originated, fiscal year before current fiscal year	359,511		359,511		373,660
Financing receivable, year three, originated, two years before current fiscal year	309,256		309,256		295,951
Financing receivable, year four, originated, three years before current fiscal year	280,926		280,926		146,278
Financing receivable, year five, originated, four years before current fiscal year	129,662		129,662		122,897
Financing receivable, originated, more than five years before current fiscal year	337,469		337,469		273,052
Revolving Loans Amortized Cost Basis	356,850		356,850		315,452
Total loans	2,042,310		2,042,310		1,852,705
Commercial | Watch (7-8)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	8,378		8,378		10,348
Financing receivable, year two, originated, fiscal year before current fiscal year	3,270		3,270		3,055
Financing receivable, year three, originated, two years before current fiscal year	10,944		10,944		17,258
Financing receivable, year four, originated, three years before current fiscal year	17,523		17,523		9,002
Financing receivable, year five, originated, four years before current fiscal year	1,270		1,270		5,636
Financing receivable, originated, more than five years before current fiscal year	11,907		11,907		4,736
Revolving Loans Amortized Cost Basis	4,570		4,570		20,183
Total loans	57,862		57,862		70,218
Commercial | Substandard Accrual (9)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	0		0		2,693
Financing receivable, year two, originated, fiscal year before current fiscal year	1,845		1,845		2,052
Financing receivable, year three, originated, two years before current fiscal year	401		401		1,642
Financing receivable, year four, originated, three years before current fiscal year	0		0		2,343
Financing receivable, year five, originated, four years before current fiscal year	1,010		1,010		267
Financing receivable, originated, more than five years before current fiscal year	950		950		877
Revolving Loans Amortized Cost Basis	6,850		6,850		4,513
Total loans	11,056		11,056		14,387
Commercial | Non-Accrual (10-11)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	0		0		0
Financing receivable, year two, originated, fiscal year before current fiscal year	0		0		0
Financing receivable, year three, originated, two years before current fiscal year	13,825		13,825		0
Financing receivable, year four, originated, three years before current fiscal year	0		0		47
Financing receivable, year five, originated, four years before current fiscal year	0		0		0
Financing receivable, originated, more than five years before current fiscal year	0		0		7
Revolving Loans Amortized Cost Basis	0		0		0
Total loans	13,825		13,825		54
Commercial | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	135,124		135,124		196,302
Financing receivable, year two, originated, fiscal year before current fiscal year	197,672		197,672		142,377
Financing receivable, year three, originated, two years before current fiscal year	140,781		140,781		145,523
Financing receivable, year four, originated, three years before current fiscal year	116,365		116,365		82,482
Financing receivable, year five, originated, four years before current fiscal year	61,496		61,496		78,831
Financing receivable, originated, more than five years before current fiscal year	158,920		158,920		106,624
Revolving Loans Amortized Cost Basis	308,609		308,609		249,190
Total loans	1,118,967		1,118,967		1,001,329
Accrued interest, current fiscal year	376		376		612
Accrued interest, fiscal year before current	557		557		478
Accrued interest, two years before current	465		465		361
Accrued interest, three years before current	292		292		217
Accrued interest, four years before current	143		143		342
Accrued interest, more than five years before current fiscal year	626		626		341
Accrued interest, revolving	1,198		1,198		959
Accrued interest excluded from total	3,657		3,657		3,310
Gross charge-offs, current fiscal year			0		0
Gross charge-offs, fiscal year before current			0		0
Gross charge-offs, two years before current			78		0
Gross charge-offs, three years before current			0		0
Gross charge-offs, four years before current			0		0
Gross charge-offs, more than five years before current			0		0
Gross charge-offs, revolving			0		0
Current period gross charge-offs			78		0
Commercial | Commercial and industrial | Non-watch (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	134,978		134,978		183,261
Financing receivable, year two, originated, fiscal year before current fiscal year	193,874		193,874		137,270
Financing receivable, year three, originated, two years before current fiscal year	137,933		137,933		142,630
Financing receivable, year four, originated, three years before current fiscal year	115,430		115,430		71,225
Financing receivable, year five, originated, four years before current fiscal year	59,345		59,345		72,928
Financing receivable, originated, more than five years before current fiscal year	151,690		151,690		106,086
Revolving Loans Amortized Cost Basis	297,535		297,535		242,573
Total loans	1,090,785		1,090,785		955,973
Commercial | Commercial and industrial | Watch (7-8)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	146		146		10,348
Financing receivable, year two, originated, fiscal year before current fiscal year	1,953		1,953		3,055
Financing receivable, year three, originated, two years before current fiscal year	2,848		2,848		1,251
Financing receivable, year four, originated, three years before current fiscal year	935		935		9,002
Financing receivable, year five, originated, four years before current fiscal year	1,270		1,270		5,636
Financing receivable, originated, more than five years before current fiscal year	6,940		6,940		336
Revolving Loans Amortized Cost Basis	4,224		4,224		2,104
Total loans	18,316		18,316		31,732
Commercial | Commercial and industrial | Substandard Accrual (9)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	0		0		2,693
Financing receivable, year two, originated, fiscal year before current fiscal year	1,845		1,845		2,052
Financing receivable, year three, originated, two years before current fiscal year	0		0		1,642
Financing receivable, year four, originated, three years before current fiscal year	0		0		2,208
Financing receivable, year five, originated, four years before current fiscal year	881		881		267
Financing receivable, originated, more than five years before current fiscal year	290		290		195
Revolving Loans Amortized Cost Basis	6,850		6,850		4,513
Total loans	9,866		9,866		13,570
Commercial | Commercial and industrial | Non-Accrual (10-11)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	0		0		0
Financing receivable, year two, originated, fiscal year before current fiscal year	0		0		0
Financing receivable, year three, originated, two years before current fiscal year	0		0		0
Financing receivable, year four, originated, three years before current fiscal year	0		0		47
Financing receivable, year five, originated, four years before current fiscal year	0		0		0
Financing receivable, originated, more than five years before current fiscal year	0		0		7
Revolving Loans Amortized Cost Basis	0		0		0
Total loans	0		0		54
Commercial | Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	141,890		141,890		142,154
Financing receivable, year two, originated, fiscal year before current fiscal year	166,954		166,954		236,390
Financing receivable, year three, originated, two years before current fiscal year	193,645		193,645		169,328
Financing receivable, year four, originated, three years before current fiscal year	182,084		182,084		75,188
Financing receivable, year five, originated, four years before current fiscal year	70,446		70,446		49,969
Financing receivable, originated, more than five years before current fiscal year	191,406		191,406		172,048
Revolving Loans Amortized Cost Basis	59,661		59,661		90,958
Total loans	1,006,086		1,006,086		936,035
Accrued interest, current fiscal year	454		454		608
Accrued interest, fiscal year before current	574		574		632
Accrued interest, two years before current	520		520		628
Accrued interest, three years before current	624		624		166
Accrued interest, four years before current	146		146		131
Accrued interest, more than five years before current fiscal year	653		653		658
Accrued interest, revolving	224		224		363
Accrued interest excluded from total	3,195		3,195		3,186
Gross charge-offs, current fiscal year			0		0
Gross charge-offs, fiscal year before current			0		0
Gross charge-offs, two years before current			0		0
Gross charge-offs, three years before current			0		0
Gross charge-offs, four years before current			0		0
Gross charge-offs, more than five years before current			0		0
Gross charge-offs, revolving			0		0
Current period gross charge-offs			0		0
Commercial | Commercial real estate | Non-watch (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	133,658		133,658		142,154
Financing receivable, year two, originated, fiscal year before current fiscal year	165,637		165,637		236,390
Financing receivable, year three, originated, two years before current fiscal year	171,323		171,323		153,321
Financing receivable, year four, originated, three years before current fiscal year	165,496		165,496		75,053
Financing receivable, year five, originated, four years before current fiscal year	70,317		70,317		49,969
Financing receivable, originated, more than five years before current fiscal year	185,779		185,779		166,966
Revolving Loans Amortized Cost Basis	59,315		59,315		72,879
Total loans	951,525		951,525		896,732
Commercial | Commercial real estate | Watch (7-8)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	8,232		8,232		0
Financing receivable, year two, originated, fiscal year before current fiscal year	1,317		1,317		0
Financing receivable, year three, originated, two years before current fiscal year	8,096		8,096		16,007
Financing receivable, year four, originated, three years before current fiscal year	16,588		16,588		0
Financing receivable, year five, originated, four years before current fiscal year	0		0		0
Financing receivable, originated, more than five years before current fiscal year	4,967		4,967		4,400
Revolving Loans Amortized Cost Basis	346		346		18,079
Total loans	39,546		39,546		38,486
Commercial | Commercial real estate | Substandard Accrual (9)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	0		0		0
Financing receivable, year two, originated, fiscal year before current fiscal year	0		0		0
Financing receivable, year three, originated, two years before current fiscal year	401		401		0
Financing receivable, year four, originated, three years before current fiscal year	0		0		135
Financing receivable, year five, originated, four years before current fiscal year	129		129		0
Financing receivable, originated, more than five years before current fiscal year	660		660		682
Revolving Loans Amortized Cost Basis	0		0		0
Total loans	1,190		1,190		817
Commercial | Commercial real estate | Non-Accrual (10-11)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	0		0		0
Financing receivable, year two, originated, fiscal year before current fiscal year	0		0		0
Financing receivable, year three, originated, two years before current fiscal year	13,825		13,825		0
Financing receivable, year four, originated, three years before current fiscal year	0		0		0
Financing receivable, year five, originated, four years before current fiscal year	0		0		0
Financing receivable, originated, more than five years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Total loans	$ 13,825		$ 13,825		$ 0

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