Loans and Leases and the Allowance for Credit Losses - Schedule of Amortized Cost Basis of Loans and Leases by Credit Quality Indicator, Loan Class, and Year of Origination (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	$ 901,849		$ 901,849		$ 1,545,211
Fiscal year before latest fiscal year	1,390,013		1,390,013		1,699,053
Two years before latest fiscal year	1,619,556		1,619,556		2,517,363
Three years before latest fiscal year	2,243,900		2,243,900		2,093,226
Four years before latest fiscal year	1,990,083		1,990,083		1,535,932
Prior	3,290,410		3,290,410		2,022,046
Revolving Loans	2,504,644		2,504,644		2,606,317
Revolving Loans Converted to Term Loans	61,723		61,723		56,832
Total Loans and Leases	14,002,178		14,002,178		14,075,980
Gross charge-offs, current year			509		2,020
Gross charge-offs, fiscal year before current year			1,706		4,011
Gross charge-offs, two fiscal years before current year			2,109		4,241
Gross charge-offs, three fiscal years before current year			1,970		4,727
Gross charge-offs, four fiscal years before current year			946		747
Gross charge-offs, five fiscal years before current year			2,250		2,689
Gross charge-offs, Revolving			129		429
Gross charge-offs, Revolving loans converted to term loans			101		272
Total Loans and Leases	4,011	$ 4,830	9,720	$ 8,585	19,136
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	532,925		532,925		933,502
Fiscal year before latest fiscal year	835,610		835,610		1,165,444
Two years before latest fiscal year	1,146,115		1,146,115		1,457,532
Three years before latest fiscal year	1,266,985		1,266,985		765,680
Four years before latest fiscal year	729,620		729,620		576,097
Prior	1,166,084		1,166,084		730,012
Revolving Loans	426,495		426,495		496,859
Revolving Loans Converted to Term Loans	292		292		283
Total Loans and Leases	6,104,126		6,104,126		6,125,409
Gross charge-offs, current year			165		362
Gross charge-offs, fiscal year before current year			139		282
Gross charge-offs, two fiscal years before current year			0		0
Gross charge-offs, three fiscal years before current year			0		1,438
Gross charge-offs, four fiscal years before current year			0		128
Gross charge-offs, five fiscal years before current year			1,301		399
Gross charge-offs, Revolving			0		0
Gross charge-offs, Revolving loans converted to term loans			0		0
Total Loans and Leases	206	875	1,605	1,235	2,609
Commercial | Commercial and Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	98,868		98,868		357,623
Fiscal year before latest fiscal year	328,520		328,520		296,782
Two years before latest fiscal year	282,138		282,138		240,285
Three years before latest fiscal year	217,050		217,050		151,289
Four years before latest fiscal year	141,406		141,406		141,748
Prior	149,691		149,691		85,685
Revolving Loans	379,595		379,595		431,438
Revolving Loans Converted to Term Loans	292		292		283
Total Loans and Leases	1,597,560		1,597,560		1,705,133
Gross charge-offs, current year			165		362
Gross charge-offs, fiscal year before current year			139		282
Gross charge-offs, two fiscal years before current year			0		0
Gross charge-offs, three fiscal years before current year			0		1,438
Gross charge-offs, four fiscal years before current year			0		128
Gross charge-offs, five fiscal years before current year			1,301		399
Gross charge-offs, Revolving			0		0
Gross charge-offs, Revolving loans converted to term loans			0		0
Total Loans and Leases			1,605		2,609
Commercial | Commercial and Industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	93,593		93,593		356,831
Fiscal year before latest fiscal year	327,519		327,519		281,168
Two years before latest fiscal year	267,249		267,249		236,802
Three years before latest fiscal year	214,822		214,822		146,458
Four years before latest fiscal year	139,078		139,078		135,158
Prior	144,580		144,580		79,258
Revolving Loans	334,342		334,342		375,135
Revolving Loans Converted to Term Loans	290		290		276
Total Loans and Leases	1,521,473		1,521,473		1,611,086
Commercial | Commercial and Industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		467
Fiscal year before latest fiscal year	413		413		0
Two years before latest fiscal year	0		0		0
Three years before latest fiscal year	0		0		0
Four years before latest fiscal year	0		0		0
Prior	24		24		0
Revolving Loans	36,338		36,338		38,587
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	36,775		36,775		39,054
Commercial | Commercial and Industrial | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	5,275		5,275		325
Fiscal year before latest fiscal year	588		588		15,614
Two years before latest fiscal year	14,889		14,889		3,483
Three years before latest fiscal year	2,228		2,228		4,831
Four years before latest fiscal year	2,328		2,328		6,590
Prior	5,087		5,087		6,427
Revolving Loans	8,915		8,915		17,716
Revolving Loans Converted to Term Loans	2		2		7
Total Loans and Leases	39,312		39,312		54,993
Commercial | Commercial Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	395,309		395,309		437,185
Fiscal year before latest fiscal year	343,659		343,659		749,844
Two years before latest fiscal year	704,022		704,022		1,117,965
Three years before latest fiscal year	973,500		973,500		602,870
Four years before latest fiscal year	578,482		578,482		427,764
Prior	1,006,019		1,006,019		636,339
Revolving Loans	37,965		37,965		48,655
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	4,038,956		4,038,956		4,020,622
Gross charge-offs, current year			0		0
Gross charge-offs, fiscal year before current year			0		0
Gross charge-offs, two fiscal years before current year			0		0
Gross charge-offs, three fiscal years before current year			0		0
Gross charge-offs, four fiscal years before current year			0		0
Gross charge-offs, five fiscal years before current year			0		0
Gross charge-offs, Revolving			0		0
Gross charge-offs, Revolving loans converted to term loans			0		0
Total Loans and Leases			0		0
Commercial | Commercial Mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	311,692		311,692		401,415
Fiscal year before latest fiscal year	308,025		308,025		687,580
Two years before latest fiscal year	690,377		690,377		1,091,627
Three years before latest fiscal year	944,637		944,637		596,386
Four years before latest fiscal year	575,409		575,409		405,244
Prior	974,842		974,842		600,386
Revolving Loans	37,965		37,965		48,655
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	3,842,947		3,842,947		3,831,293
Commercial | Commercial Mortgage | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	83,617		83,617		0
Fiscal year before latest fiscal year	0		0		47,773
Two years before latest fiscal year	0		0		1,918
Three years before latest fiscal year	1,890		1,890		3,348
Four years before latest fiscal year	0		0		2,911
Prior	1,845		1,845		15,148
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	87,352		87,352		71,098
Commercial | Commercial Mortgage | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		35,770
Fiscal year before latest fiscal year	35,634		35,634		14,491
Two years before latest fiscal year	13,645		13,645		24,420
Three years before latest fiscal year	26,973		26,973		3,136
Four years before latest fiscal year	3,073		3,073		19,609
Prior	29,332		29,332		20,805
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	108,657		108,657		118,231
Commercial | Construction
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	26,305		26,305		89,334
Fiscal year before latest fiscal year	115,965		115,965		110,153
Two years before latest fiscal year	152,293		152,293		89,677
Three years before latest fiscal year	68,909		68,909		1,689
Four years before latest fiscal year	2,361		2,361		1,279
Prior	0		0		0
Revolving Loans	8,935		8,935		16,766
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	374,768		374,768		308,898
Gross charge-offs, current year			0		0
Gross charge-offs, fiscal year before current year			0		0
Gross charge-offs, two fiscal years before current year			0		0
Gross charge-offs, three fiscal years before current year			0		0
Gross charge-offs, four fiscal years before current year			0		0
Gross charge-offs, five fiscal years before current year			0		0
Gross charge-offs, Revolving			0		0
Gross charge-offs, Revolving loans converted to term loans			0		0
Total Loans and Leases			0		0
Commercial | Construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	24,822		24,822		89,334
Fiscal year before latest fiscal year	115,965		115,965		110,153
Two years before latest fiscal year	152,293		152,293		87,006
Three years before latest fiscal year	67,613		67,613		1,689
Four years before latest fiscal year	2,361		2,361		1,279
Prior	0		0		0
Revolving Loans	8,935		8,935		16,766
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	371,989		371,989		306,227
Commercial | Construction | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year					0
Fiscal year before latest fiscal year					0
Two years before latest fiscal year					2,671
Three years before latest fiscal year					0
Four years before latest fiscal year					0
Prior					0
Revolving Loans					0
Revolving Loans Converted to Term Loans					0
Total Loans and Leases					2,671
Commercial | Construction | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	1,483		1,483
Fiscal year before latest fiscal year	0		0
Two years before latest fiscal year	0		0
Three years before latest fiscal year	1,296		1,296
Four years before latest fiscal year	0		0
Prior	0		0
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total Loans and Leases	2,779		2,779
Commercial | Lease Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	12,443		12,443		49,360
Fiscal year before latest fiscal year	47,466		47,466		8,665
Two years before latest fiscal year	7,662		7,662		9,605
Three years before latest fiscal year	7,526		7,526		9,832
Four years before latest fiscal year	7,371		7,371		5,306
Prior	10,374		10,374		7,988
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	92,842		92,842		90,756
Gross charge-offs, current year			0		0
Gross charge-offs, fiscal year before current year			0		0
Gross charge-offs, two fiscal years before current year			0		0
Gross charge-offs, three fiscal years before current year			0		0
Gross charge-offs, four fiscal years before current year			0		0
Gross charge-offs, five fiscal years before current year			0		0
Gross charge-offs, Revolving			0		0
Gross charge-offs, Revolving loans converted to term loans			0		0
Total Loans and Leases			0		0
Commercial | Lease Financing | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	12,443		12,443		49,360
Fiscal year before latest fiscal year	47,466		47,466		8,174
Two years before latest fiscal year	7,229		7,229		9,568
Three years before latest fiscal year	7,497		7,497		9,751
Four years before latest fiscal year	7,306		7,306		5,244
Prior	9,990		9,990		7,602
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	91,931		91,931		89,699
Commercial | Lease Financing | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
Fiscal year before latest fiscal year	0		0		491
Two years before latest fiscal year	433		433		37
Three years before latest fiscal year	29		29		81
Four years before latest fiscal year	65		65		62
Prior	384		384		386
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	911		911		1,057
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	368,924		368,924		611,709
Fiscal year before latest fiscal year	554,403		554,403		533,609
Two years before latest fiscal year	473,441		473,441		1,059,831
Three years before latest fiscal year	976,915		976,915		1,327,546
Four years before latest fiscal year	1,260,463		1,260,463		959,835
Prior	2,124,326		2,124,326		1,292,034
Revolving Loans	2,078,149		2,078,149		2,109,458
Revolving Loans Converted to Term Loans	61,431		61,431		56,549
Total Loans and Leases	7,898,052		7,898,052		7,950,571
Gross charge-offs, current year			344		1,658
Gross charge-offs, fiscal year before current year			1,567		3,729
Gross charge-offs, two fiscal years before current year			2,109		4,241
Gross charge-offs, three fiscal years before current year			1,970		3,289
Gross charge-offs, four fiscal years before current year			946		619
Gross charge-offs, five fiscal years before current year			949		2,290
Gross charge-offs, Revolving			129		429
Gross charge-offs, Revolving loans converted to term loans			101		272
Total Loans and Leases	3,805	$ 3,955	8,115	$ 7,350	16,527
Consumer | Residential Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	186,182		186,182		268,330
Fiscal year before latest fiscal year	254,063		254,063		271,985
Two years before latest fiscal year	255,345		255,345		752,778
Three years before latest fiscal year	733,235		733,235		1,180,665
Four years before latest fiscal year	1,151,789		1,151,789		920,015
Prior	2,056,400		2,056,400		1,234,510
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	4,637,014		4,637,014		4,628,283
Gross charge-offs, current year			0		0
Gross charge-offs, fiscal year before current year			0		0
Gross charge-offs, two fiscal years before current year			0		0
Gross charge-offs, three fiscal years before current year			0		337
Gross charge-offs, four fiscal years before current year			0		0
Gross charge-offs, five fiscal years before current year			0		48
Gross charge-offs, Revolving			0		0
Gross charge-offs, Revolving loans converted to term loans			0		0
Total Loans and Leases			0		385
Consumer | Residential Mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	186,182		186,182		268,330
Fiscal year before latest fiscal year	254,063		254,063		271,985
Two years before latest fiscal year	254,373		254,373		751,920
Three years before latest fiscal year	731,407		731,407		1,180,191
Four years before latest fiscal year	1,151,789		1,151,789		919,280
Prior	2,052,578		2,052,578		1,232,582
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	4,630,392		4,630,392		4,624,288
Consumer | Residential Mortgage | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
Fiscal year before latest fiscal year	0		0		0
Two years before latest fiscal year	972		972		858
Three years before latest fiscal year	1,828		1,828		474
Four years before latest fiscal year	0		0		735
Prior	3,822		3,822		1,928
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	6,622		6,622		3,995
Consumer | Home Equity
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
Fiscal year before latest fiscal year	0		0		0
Two years before latest fiscal year	0		0		0
Three years before latest fiscal year	0		0		0
Four years before latest fiscal year	0		0		0
Prior	39		39		40
Revolving Loans	2,077,555		2,077,555		2,108,925
Revolving Loans Converted to Term Loans	61,431		61,431		56,549
Total Loans and Leases	2,139,025		2,139,025		2,165,514
Gross charge-offs, current year			0		0
Gross charge-offs, fiscal year before current year			0		0
Gross charge-offs, two fiscal years before current year			0		0
Gross charge-offs, three fiscal years before current year			0		0
Gross charge-offs, four fiscal years before current year			0		0
Gross charge-offs, five fiscal years before current year			0		0
Gross charge-offs, Revolving			129		429
Gross charge-offs, Revolving loans converted to term loans			101		272
Total Loans and Leases			230		701
Consumer | Home Equity | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
Fiscal year before latest fiscal year	0		0		0
Two years before latest fiscal year	0		0		0
Three years before latest fiscal year	0		0		0
Four years before latest fiscal year	0		0		0
Prior	39		39		40
Revolving Loans	2,073,815		2,073,815		2,105,833
Revolving Loans Converted to Term Loans	60,741		60,741		55,963
Total Loans and Leases	2,134,595		2,134,595		2,161,836
Consumer | Home Equity | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
Fiscal year before latest fiscal year	0		0		0
Two years before latest fiscal year	0		0		0
Three years before latest fiscal year	0		0		0
Four years before latest fiscal year	0		0		0
Prior	0		0		0
Revolving Loans	3,740		3,740		3,092
Revolving Loans Converted to Term Loans	690		690		586
Total Loans and Leases	4,430		4,430		3,678
Consumer | Automobile
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	97,327		97,327		210,235
Fiscal year before latest fiscal year	184,702		184,702		187,327
Two years before latest fiscal year	155,966		155,966		210,431
Three years before latest fiscal year	168,976		168,976		94,646
Four years before latest fiscal year	70,754		70,754		34,671
Prior	37,963		37,963		26,836
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	715,688		715,688		764,146
Gross charge-offs, current year			12		227
Gross charge-offs, fiscal year before current year			575		1,578
Gross charge-offs, two fiscal years before current year			1,010		1,340
Gross charge-offs, three fiscal years before current year			728		1,083
Gross charge-offs, four fiscal years before current year			212		293
Gross charge-offs, five fiscal years before current year			467		821
Gross charge-offs, Revolving			0		0
Gross charge-offs, Revolving loans converted to term loans			0		0
Total Loans and Leases			3,004		5,342
Consumer | Automobile | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	97,287		97,287		210,145
Fiscal year before latest fiscal year	184,432		184,432		187,136
Two years before latest fiscal year	155,827		155,827		210,207
Three years before latest fiscal year	168,824		168,824		94,492
Four years before latest fiscal year	70,731		70,731		34,614
Prior	37,906		37,906		26,777
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	715,007		715,007		763,371
Consumer | Automobile | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	40		40		90
Fiscal year before latest fiscal year	270		270		191
Two years before latest fiscal year	139		139		224
Three years before latest fiscal year	152		152		154
Four years before latest fiscal year	23		23		57
Prior	57		57		59
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	681		681		775
Consumer | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	85,415		85,415		133,144
Fiscal year before latest fiscal year	115,638		115,638		74,297
Two years before latest fiscal year	62,130		62,130		96,622
Three years before latest fiscal year	74,704		74,704		52,235
Four years before latest fiscal year	37,920		37,920		5,149
Prior	29,924		29,924		30,648
Revolving Loans	594		594		533
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	406,325		406,325		392,628
Gross charge-offs, current year			332		1,431
Gross charge-offs, fiscal year before current year			992		2,151
Gross charge-offs, two fiscal years before current year			1,099		2,901
Gross charge-offs, three fiscal years before current year			1,242		1,869
Gross charge-offs, four fiscal years before current year			734		326
Gross charge-offs, five fiscal years before current year			482		1,421
Gross charge-offs, Revolving			0		0
Gross charge-offs, Revolving loans converted to term loans			0		0
Total Loans and Leases			4,881		10,099
Consumer | Other | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	85,413		85,413		133,093
Fiscal year before latest fiscal year	115,458		115,458		74,068
Two years before latest fiscal year	62,036		62,036		96,376
Three years before latest fiscal year	74,522		74,522		52,152
Four years before latest fiscal year	37,821		37,821		5,149
Prior	29,852		29,852		30,580
Revolving Loans	594		594		533
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	405,696		405,696		391,951
Consumer | Other | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	2		2		51
Fiscal year before latest fiscal year	180		180		229
Two years before latest fiscal year	94		94		246
Three years before latest fiscal year	182		182		83
Four years before latest fiscal year	99		99		0
Prior	72		72		68
Revolving Loans	0		0		0
Revolving Loans Converted to Term Loans	0		0		0
Total Loans and Leases	$ 629		$ 629		$ 677