Loans - Loan Ratings by Loan Class, Commercial (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	$ 3,631,114		$ 3,631,114		$ 3,465,352
Accrued interest excluded from total	11,195		11,195		10,009
Current period gross charge-offs	650	$ 618	2,281	$ 1,291
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	125,513		125,513		328,479
Financing receivable, year two, originated, fiscal year before current fiscal year	340,495		340,495		249,861
Financing receivable, year three, originated, two years before current fiscal year	244,253		244,253		97,516
Financing receivable, year four, originated, three years before current fiscal year	86,185		86,185		150,582
Financing receivable, year five, originated, four years before current fiscal year	142,099		142,099		90,533
Financing receivable, originated, more than five years before current fiscal year	314,197		314,197		267,041
Revolving Loans Amortized Cost Basis	285,420		285,420		282,841
Total loans	1,538,162		1,538,162		1,466,853
Accrued interest, current fiscal year	130		130		847
Accrued interest, fiscal year before current	1,115		1,115		646
Accrued interest, two years before current	675		675		234
Accrued interest, three years before current	243		243		473
Accrued interest, four years before current	449		449		387
Accrued interest, more than five years before current fiscal year	1,052		1,052		823
Accrued interest, revolving	1,459		1,459		999
Accrued interest excluded from total	5,123		5,123		4,409
Gross charge-offs, current fiscal year			0
Gross charge-offs, fiscal year before current			0
Gross charge-offs, two years before current			0
Gross charge-offs, three years before current			0
Gross charge-offs, four years before current			960
Gross charge-offs, more than five years before current			69
Gross charge-offs, revolving			0
Current period gross charge-offs	69	$ 0	1,029	$ 0
Commercial | Non-watch (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	124,975		124,975		327,799
Financing receivable, year two, originated, fiscal year before current fiscal year	338,706		338,706		244,169
Financing receivable, year three, originated, two years before current fiscal year	226,564		226,564		96,354
Financing receivable, year four, originated, three years before current fiscal year	80,498		80,498		143,554
Financing receivable, year five, originated, four years before current fiscal year	131,803		131,803		87,295
Financing receivable, originated, more than five years before current fiscal year	310,769		310,769		255,422
Revolving Loans Amortized Cost Basis	279,638		279,638		279,936
Total loans	1,492,953		1,492,953		1,434,529
Commercial | Watch (7-8)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	538		538		680
Financing receivable, year two, originated, fiscal year before current fiscal year	1,450		1,450		4,721
Financing receivable, year three, originated, two years before current fiscal year	16,744		16,744		1,094
Financing receivable, year four, originated, three years before current fiscal year	5,633		5,633		6,459
Financing receivable, year five, originated, four years before current fiscal year	6,647		6,647		1,115
Financing receivable, originated, more than five years before current fiscal year	3,277		3,277		6,115
Revolving Loans Amortized Cost Basis	4,818		4,818		2,905
Total loans	39,107		39,107		23,089
Commercial | 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	339		339		971
Financing receivable, year three, originated, two years before current fiscal year	945		945		68
Financing receivable, year four, originated, three years before current fiscal year	54		54		569
Financing receivable, year five, originated, four years before current fiscal year	3,649		3,649		2,123
Financing receivable, originated, more than five years before current fiscal year	118		118		5,466
Revolving Loans Amortized Cost Basis	964		964		0
Total loans	6,069		6,069		9,197
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	0		0		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	33		33		38
Revolving Loans Amortized Cost Basis	0		0		0
Total loans	33		33		38
Commercial | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	42,522		42,522		158,241
Financing receivable, year two, originated, fiscal year before current fiscal year	161,849		161,849		94,761
Financing receivable, year three, originated, two years before current fiscal year	83,095		83,095		59,141
Financing receivable, year four, originated, three years before current fiscal year	55,283		55,283		47,870
Financing receivable, year five, originated, four years before current fiscal year	52,632		52,632		30,929
Financing receivable, originated, more than five years before current fiscal year	111,103		111,103		100,822
Revolving Loans Amortized Cost Basis	239,174		239,174		240,699
Total loans	745,658		745,658		732,463
Accrued interest, current fiscal year	51		51		238
Accrued interest, fiscal year before current	426		426		178
Accrued interest, two years before current	158		158		146
Accrued interest, three years before current	127		127		105
Accrued interest, four years before current	109		109		181
Accrued interest, more than five years before current fiscal year	336		336		308
Accrued interest, revolving	1,269		1,269		890
Accrued interest excluded from total	2,476		2,476		2,046
Gross charge-offs, current fiscal year			0
Gross charge-offs, fiscal year before current			0
Gross charge-offs, two years before current			0
Gross charge-offs, three years before current			0
Gross charge-offs, four years before current			0
Gross charge-offs, more than five years before current			69
Gross charge-offs, revolving			0
Current period gross charge-offs			69
Commercial | Commercial and industrial | Non-watch (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	41,984		41,984		157,561
Financing receivable, year two, originated, fiscal year before current fiscal year	161,339		161,339		89,251
Financing receivable, year three, originated, two years before current fiscal year	80,550		80,550		58,292
Financing receivable, year four, originated, three years before current fiscal year	49,596		49,596		45,792
Financing receivable, year five, originated, four years before current fiscal year	46,832		46,832		30,715
Financing receivable, originated, more than five years before current fiscal year	109,245		109,245		95,908
Revolving Loans Amortized Cost Basis	233,392		233,392		237,906
Total loans	722,938		722,938		715,425
Commercial | Commercial and industrial | Watch (7-8)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	538		538		680
Financing receivable, year two, originated, fiscal year before current fiscal year	171		171		4,539
Financing receivable, year three, originated, two years before current fiscal year	1,600		1,600		781
Financing receivable, year four, originated, three years before current fiscal year	5,633		5,633		1,690
Financing receivable, year five, originated, four years before current fiscal year	4,241		4,241		105
Financing receivable, originated, more than five years before current fiscal year	1,707		1,707		4,474
Revolving Loans Amortized Cost Basis	4,818		4,818		2,793
Total loans	18,708		18,708		15,062
Commercial | Commercial and industrial | 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	339		339		971
Financing receivable, year three, originated, two years before current fiscal year	945		945		68
Financing receivable, year four, originated, three years before current fiscal year	54		54		388
Financing receivable, year five, originated, four years before current fiscal year	1,559		1,559		109
Financing receivable, originated, more than five years before current fiscal year	118		118		402
Revolving Loans Amortized Cost Basis	964		964		0
Total loans	3,979		3,979		1,938
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		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	33		33		38
Revolving Loans Amortized Cost Basis	0		0		0
Total loans	33		33		38
Commercial | Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	82,991		82,991		170,238
Financing receivable, year two, originated, fiscal year before current fiscal year	178,646		178,646		155,100
Financing receivable, year three, originated, two years before current fiscal year	161,158		161,158		38,375
Financing receivable, year four, originated, three years before current fiscal year	30,902		30,902		102,712
Financing receivable, year five, originated, four years before current fiscal year	89,467		89,467		59,604
Financing receivable, originated, more than five years before current fiscal year	203,094		203,094		166,219
Revolving Loans Amortized Cost Basis	46,246		46,246		42,142
Total loans	792,504		792,504		734,390
Accrued interest, current fiscal year	79		79		609
Accrued interest, fiscal year before current	689		689		468
Accrued interest, two years before current	517		517		88
Accrued interest, three years before current	116		116		368
Accrued interest, four years before current	340		340		206
Accrued interest, more than five years before current fiscal year	716		716		515
Accrued interest, revolving	190		190		109
Accrued interest excluded from total	2,647		2,647		2,363
Gross charge-offs, current fiscal year			0
Gross charge-offs, fiscal year before current			0
Gross charge-offs, two years before current			0
Gross charge-offs, three years before current			0
Gross charge-offs, four years before current			960
Gross charge-offs, more than five years before current			0
Gross charge-offs, revolving			0
Current period gross charge-offs			960
Commercial | Commercial real estate | Non-watch (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, originated, current fiscal year	82,991		82,991		170,238
Financing receivable, year two, originated, fiscal year before current fiscal year	177,367		177,367		154,918
Financing receivable, year three, originated, two years before current fiscal year	146,014		146,014		38,062
Financing receivable, year four, originated, three years before current fiscal year	30,902		30,902		97,762
Financing receivable, year five, originated, four years before current fiscal year	84,971		84,971		56,580
Financing receivable, originated, more than five years before current fiscal year	201,524		201,524		159,514
Revolving Loans Amortized Cost Basis	46,246		46,246		42,030
Total loans	770,015		770,015		719,104
Commercial | Commercial real estate | Watch (7-8)
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	1,279		1,279		182
Financing receivable, year three, originated, two years before current fiscal year	15,144		15,144		313
Financing receivable, year four, originated, three years before current fiscal year	0		0		4,769
Financing receivable, year five, originated, four years before current fiscal year	2,406		2,406		1,010
Financing receivable, originated, more than five years before current fiscal year	1,570		1,570		1,641
Revolving Loans Amortized Cost Basis	0		0		112
Total loans	20,399		20,399		8,027
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	0		0		0
Financing receivable, year four, originated, three years before current fiscal year	0		0		181
Financing receivable, year five, originated, four years before current fiscal year	2,090		2,090		2,014
Financing receivable, originated, more than five years before current fiscal year	0		0		5,064
Revolving Loans Amortized Cost Basis	0		0		0
Total loans	2,090		2,090		7,259
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	0		0		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	$ 0		$ 0		$ 0