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		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	$ 474,707		$ 1,545,211
Current Fiscal Year Gross Charge-Offs	0		2,020
Fiscal Year Before Latest Fiscal Year	1,461,262		1,699,053
Fiscal Year Before Latest Fiscal Year Gross Charge-Offs	958		4,011
Two Years Before Latest Fiscal Year	1,678,452		2,517,363
Two Years Before Latest Fiscal Year Gross Charge-Offs	1,255		4,241
Three Years Before Latest Fiscal Year	2,402,676		2,093,226
Three Years Before Latest Fiscal Year Gross Charge-Offs	1,145		4,727
Four Years Before Latest Fiscal Year	2,037,346		1,535,932
Four Years Before Latest Fiscal Year Gross Charge-Offs	538		747
Prior	3,439,087		2,022,046
Prior Gross Charge-Offs	1,738		2,689
Revolving Loans	2,563,478		2,606,317
Revolving Loans Gross Charge-Offs	75		429
Revolving Loans Converted to Term Loans	58,315		56,832
Revolving Loans Converted to Term Loans Gross Charge-Offs	0		272
Total Loans and Leases	14,115,323		14,075,980
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, Total	5,709	$ 3,755	19,136
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	290,895		933,502
Current Fiscal Year Gross Charge-Offs	0		362
Fiscal Year Before Latest Fiscal Year	877,568		1,165,444
Fiscal Year Before Latest Fiscal Year Gross Charge-Offs	139		282
Two Years Before Latest Fiscal Year	1,171,423		1,457,532
Two Years Before Latest Fiscal Year Gross Charge-Offs	0		0
Three Years Before Latest Fiscal Year	1,385,982		765,680
Three Years Before Latest Fiscal Year Gross Charge-Offs	0		1,438
Four Years Before Latest Fiscal Year	743,856		576,097
Four Years Before Latest Fiscal Year Gross Charge-Offs	0		128
Prior	1,251,691		730,012
Prior Gross Charge-Offs	1,260		399
Revolving Loans	476,082		496,859
Revolving Loans Gross Charge-Offs	0		0
Revolving Loans Converted to Term Loans	252		283
Revolving Loans Converted to Term Loans Gross Charge-Offs	0		0
Total Loans and Leases	6,197,749		6,125,409
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, Total	1,399	360	2,609
Commercial | Commercial and Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	73,929		357,623
Current Fiscal Year Gross Charge-Offs	0		362
Fiscal Year Before Latest Fiscal Year	349,149		296,782
Fiscal Year Before Latest Fiscal Year Gross Charge-Offs	139		282
Two Years Before Latest Fiscal Year	288,628		240,285
Two Years Before Latest Fiscal Year Gross Charge-Offs	0		0
Three Years Before Latest Fiscal Year	222,288		151,289
Three Years Before Latest Fiscal Year Gross Charge-Offs	0		1,438
Four Years Before Latest Fiscal Year	146,100		141,748
Four Years Before Latest Fiscal Year Gross Charge-Offs	0		128
Prior	213,453		85,685
Prior Gross Charge-Offs	1,260		399
Revolving Loans	409,491		431,438
Revolving Loans Gross Charge-Offs	0		0
Revolving Loans Converted to Term Loans	252		283
Revolving Loans Converted to Term Loans Gross Charge-Offs	0		0
Total Loans and Leases	1,703,290		1,705,133
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, Total	1,399		2,609
Commercial | Commercial and Industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	68,485		356,831
Fiscal Year Before Latest Fiscal Year	348,700		281,168
Two Years Before Latest Fiscal Year	273,782		236,802
Three Years Before Latest Fiscal Year	219,931		146,458
Four Years Before Latest Fiscal Year	142,372		135,158
Prior	207,935		79,258
Revolving Loans	348,894		375,135
Revolving Loans Converted to Term Loans	248		276
Total Loans and Leases	1,610,347		1,611,086
Commercial | Commercial and Industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0		467
Fiscal Year Before Latest Fiscal Year	440		0
Two Years Before Latest Fiscal Year	0		0
Three Years Before Latest Fiscal Year	0		0
Four Years Before Latest Fiscal Year	0		0
Prior	26		0
Revolving Loans	49,343		38,587
Revolving Loans Converted to Term Loans	0		0
Total Loans and Leases	49,809		39,054
Commercial | Commercial and Industrial | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	5,444		325
Fiscal Year Before Latest Fiscal Year	9		15,614
Two Years Before Latest Fiscal Year	14,846		3,483
Three Years Before Latest Fiscal Year	2,357		4,831
Four Years Before Latest Fiscal Year	3,728		6,590
Prior	5,492		6,427
Revolving Loans	11,254		17,716
Revolving Loans Converted to Term Loans	4		7
Total Loans and Leases	43,134		54,993
Commercial | Commercial Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	200,631		437,185
Current Fiscal Year Gross Charge-Offs	0		0
Fiscal Year Before Latest Fiscal Year	378,134		749,844
Fiscal Year Before Latest Fiscal Year Gross Charge-Offs	0		0
Two Years Before Latest Fiscal Year	742,903		1,117,965
Two Years Before Latest Fiscal Year Gross Charge-Offs	0		0
Three Years Before Latest Fiscal Year	1,056,353		602,870
Three Years Before Latest Fiscal Year Gross Charge-Offs	0		0
Four Years Before Latest Fiscal Year	587,287		427,764
Four Years Before Latest Fiscal Year Gross Charge-Offs	0		0
Prior	1,026,305		636,339
Prior Gross Charge-Offs	0		0
Revolving Loans	46,674		48,655
Revolving Loans Gross Charge-Offs	0		0
Revolving Loans Converted to Term Loans	0		0
Revolving Loans Converted to Term Loans Gross Charge-Offs	0		0
Total Loans and Leases	4,038,287		4,020,622
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, Total	0		0
Commercial | Commercial Mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	192,763		401,415
Fiscal Year Before Latest Fiscal Year	343,134		687,580
Two Years Before Latest Fiscal Year	684,534		1,091,627
Three Years Before Latest Fiscal Year	1,026,804		596,386
Four Years Before Latest Fiscal Year	584,182		405,244
Prior	971,403		600,386
Revolving Loans	46,674		48,655
Revolving Loans Converted to Term Loans	0		0
Total Loans and Leases	3,849,494		3,831,293
Commercial | Commercial Mortgage | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	7,702		0
Fiscal Year Before Latest Fiscal Year	0		47,773
Two Years Before Latest Fiscal Year	43,540		1,918
Three Years Before Latest Fiscal Year	1,904		3,348
Four Years Before Latest Fiscal Year	0		2,911
Prior	13,111		15,148
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total Loans and Leases	66,257		71,098
Commercial | Commercial Mortgage | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	166		35,770
Fiscal Year Before Latest Fiscal Year	35,000		14,491
Two Years Before Latest Fiscal Year	14,829		24,420
Three Years Before Latest Fiscal Year	27,645		3,136
Four Years Before Latest Fiscal Year	3,105		19,609
Prior	41,791		20,805
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total Loans and Leases	122,536		118,231
Commercial | Construction
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	9,039		89,334
Current Fiscal Year Gross Charge-Offs	0		0
Fiscal Year Before Latest Fiscal Year	101,995		110,153
Fiscal Year Before Latest Fiscal Year Gross Charge-Offs	0		0
Two Years Before Latest Fiscal Year	131,833		89,677
Two Years Before Latest Fiscal Year Gross Charge-Offs	0		0
Three Years Before Latest Fiscal Year	99,057		1,689
Three Years Before Latest Fiscal Year Gross Charge-Offs	0		0
Four Years Before Latest Fiscal Year	1,875		1,279
Four Years Before Latest Fiscal Year Gross Charge-Offs	0		0
Prior	0		0
Prior Gross Charge-Offs	0		0
Revolving Loans	19,917		16,766
Revolving Loans Gross Charge-Offs	0		0
Revolving Loans Converted to Term Loans	0		0
Revolving Loans Converted to Term Loans Gross Charge-Offs	0		0
Total Loans and Leases	363,716		308,898
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, Total	0		0
Commercial | Construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	9,039		89,334
Fiscal Year Before Latest Fiscal Year	101,995		110,153
Two Years Before Latest Fiscal Year	131,833		87,006
Three Years Before Latest Fiscal Year	96,283		1,689
Four Years Before Latest Fiscal Year	1,875		1,279
Prior	0		0
Revolving Loans	19,917		16,766
Revolving Loans Converted to Term Loans	0		0
Total Loans and Leases	360,942		306,227
Commercial | Construction | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0		0
Fiscal Year Before Latest Fiscal Year	0		0
Two Years Before Latest Fiscal Year	0		2,671
Three Years Before Latest Fiscal Year	2,774		0
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	2,774		2,671
Commercial | Lease Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	7,296		49,360
Current Fiscal Year Gross Charge-Offs	0		0
Fiscal Year Before Latest Fiscal Year	48,290		8,665
Fiscal Year Before Latest Fiscal Year Gross Charge-Offs	0		0
Two Years Before Latest Fiscal Year	8,059		9,605
Two Years Before Latest Fiscal Year Gross Charge-Offs	0		0
Three Years Before Latest Fiscal Year	8,284		9,832
Three Years Before Latest Fiscal Year Gross Charge-Offs	0		0
Four Years Before Latest Fiscal Year	8,594		5,306
Four Years Before Latest Fiscal Year Gross Charge-Offs	0		0
Prior	11,933		7,988
Prior Gross Charge-Offs	0		0
Revolving Loans	0		0
Revolving Loans Gross Charge-Offs	0		0
Revolving Loans Converted to Term Loans	0		0
Revolving Loans Converted to Term Loans Gross Charge-Offs	0		0
Total Loans and Leases	92,456		90,756
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, Total	0		0
Commercial | Lease Financing | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	7,296		49,360
Fiscal Year Before Latest Fiscal Year	48,290		8,174
Two Years Before Latest Fiscal Year	7,597		9,568
Three Years Before Latest Fiscal Year	8,251		9,751
Four Years Before Latest Fiscal Year	8,521		5,244
Prior	11,517		7,602
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total Loans and Leases	91,472		89,699
Commercial | Lease Financing | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0		0
Fiscal Year Before Latest Fiscal Year	0		491
Two Years Before Latest Fiscal Year	462		37
Three Years Before Latest Fiscal Year	33		81
Four Years Before Latest Fiscal Year	73		62
Prior	416		386
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total Loans and Leases	984		1,057
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	183,812		611,709
Current Fiscal Year Gross Charge-Offs	0		1,658
Fiscal Year Before Latest Fiscal Year	583,694		533,609
Fiscal Year Before Latest Fiscal Year Gross Charge-Offs	819		3,729
Two Years Before Latest Fiscal Year	507,029		1,059,831
Two Years Before Latest Fiscal Year Gross Charge-Offs	1,255		4,241
Three Years Before Latest Fiscal Year	1,016,694		1,327,546
Three Years Before Latest Fiscal Year Gross Charge-Offs	1,145		3,289
Four Years Before Latest Fiscal Year	1,293,490		959,835
Four Years Before Latest Fiscal Year Gross Charge-Offs	538		619
Prior	2,187,396		1,292,034
Prior Gross Charge-Offs	478		2,290
Revolving Loans	2,087,396		2,109,458
Revolving Loans Gross Charge-Offs	75		429
Revolving Loans Converted to Term Loans	58,063		56,549
Revolving Loans Converted to Term Loans Gross Charge-Offs	0		272
Total Loans and Leases	7,917,574		7,950,571
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, Total	4,310	$ 3,395	16,527
Consumer | Residential Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	88,518		268,330
Current Fiscal Year Gross Charge-Offs	0		0
Fiscal Year Before Latest Fiscal Year	260,317		271,985
Fiscal Year Before Latest Fiscal Year Gross Charge-Offs	0		0
Two Years Before Latest Fiscal Year	268,763		752,778
Two Years Before Latest Fiscal Year Gross Charge-Offs	0		0
Three Years Before Latest Fiscal Year	740,078		1,180,665
Three Years Before Latest Fiscal Year Gross Charge-Offs	0		337
Four Years Before Latest Fiscal Year	1,166,829		920,015
Four Years Before Latest Fiscal Year Gross Charge-Offs	0		0
Prior	2,106,371		1,234,510
Prior Gross Charge-Offs	0		48
Revolving Loans	0		0
Revolving Loans Gross Charge-Offs	0		0
Revolving Loans Converted to Term Loans	0		0
Revolving Loans Converted to Term Loans Gross Charge-Offs	0		0
Total Loans and Leases	4,630,876		4,628,283
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, Total	0		385
Consumer | Residential Mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	88,518		268,330
Fiscal Year Before Latest Fiscal Year	260,317		271,985
Two Years Before Latest Fiscal Year	268,763		751,920
Three Years Before Latest Fiscal Year	739,219		1,180,191
Four Years Before Latest Fiscal Year	1,166,253		919,280
Prior	2,104,068		1,232,582
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total Loans and Leases	4,627,138		4,624,288
Consumer | Residential Mortgage | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0		0
Fiscal Year Before Latest Fiscal Year	0		0
Two Years Before Latest Fiscal Year	0		858
Three Years Before Latest Fiscal Year	859		474
Four Years Before Latest Fiscal Year	576		735
Prior	2,303		1,928
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total Loans and Leases	3,738		3,995
Consumer | Home Equity Loan
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0		0
Current Fiscal Year Gross Charge-Offs	0		0
Fiscal Year Before Latest Fiscal Year	0		0
Fiscal Year Before Latest Fiscal Year Gross Charge-Offs	0		0
Two Years Before Latest Fiscal Year	0		0
Two Years Before Latest Fiscal Year Gross Charge-Offs	0		0
Three Years Before Latest Fiscal Year	0		0
Three Years Before Latest Fiscal Year Gross Charge-Offs	0		0
Four Years Before Latest Fiscal Year	0		0
Four Years Before Latest Fiscal Year Gross Charge-Offs	0		0
Prior	39		40
Prior Gross Charge-Offs	0		0
Revolving Loans	2,086,853		2,108,925
Revolving Loans Gross Charge-Offs	75		429
Revolving Loans Converted to Term Loans	58,063		56,549
Revolving Loans Converted to Term Loans Gross Charge-Offs	0		272
Total Loans and Leases	2,144,955		2,165,514
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, Total	75		701
Consumer | Home Equity Loan | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0		0
Fiscal Year Before Latest Fiscal Year	0		0
Two Years Before Latest Fiscal Year	0		0
Three Years Before Latest Fiscal Year	0		0
Four Years Before Latest Fiscal Year	0		0
Prior	39		40
Revolving Loans	2,083,861		2,105,833
Revolving Loans Converted to Term Loans	57,532		55,963
Total Loans and Leases	2,141,432		2,161,836
Consumer | Home Equity Loan | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0		0
Fiscal Year Before Latest Fiscal Year	0		0
Two Years Before Latest Fiscal Year	0		0
Three Years Before Latest Fiscal Year	0		0
Four Years Before Latest Fiscal Year	0		0
Prior	0		0
Revolving Loans	2,992		3,092
Revolving Loans Converted to Term Loans	531		586
Total Loans and Leases	3,523		3,678
Consumer | Automobile
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	48,950		210,235
Current Fiscal Year Gross Charge-Offs	0		227
Fiscal Year Before Latest Fiscal Year	200,497		187,327
Fiscal Year Before Latest Fiscal Year Gross Charge-Offs	197		1,578
Two Years Before Latest Fiscal Year	170,966		210,431
Two Years Before Latest Fiscal Year Gross Charge-Offs	617		1,340
Three Years Before Latest Fiscal Year	189,146		94,646
Three Years Before Latest Fiscal Year Gross Charge-Offs	490		1,083
Four Years Before Latest Fiscal Year	82,178		34,671
Four Years Before Latest Fiscal Year Gross Charge-Offs	173		293
Prior	48,653		26,836
Prior Gross Charge-Offs	274		821
Revolving Loans	0		0
Revolving Loans Gross Charge-Offs	0		0
Revolving Loans Converted to Term Loans	0		0
Revolving Loans Converted to Term Loans Gross Charge-Offs	0		0
Total Loans and Leases	740,390		764,146
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, Total	1,751		5,342
Consumer | Automobile | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	48,950		210,145
Fiscal Year Before Latest Fiscal Year	200,325		187,136
Two Years Before Latest Fiscal Year	170,879		210,207
Three Years Before Latest Fiscal Year	189,019		94,492
Four Years Before Latest Fiscal Year	82,178		34,614
Prior	48,553		26,777
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total Loans and Leases	739,904		763,371
Consumer | Automobile | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0		90
Fiscal Year Before Latest Fiscal Year	172		191
Two Years Before Latest Fiscal Year	87		224
Three Years Before Latest Fiscal Year	127		154
Four Years Before Latest Fiscal Year	0		57
Prior	100		59
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total Loans and Leases	486		775
Consumer | Other Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	46,344		133,144
Current Fiscal Year Gross Charge-Offs	0		1,431
Fiscal Year Before Latest Fiscal Year	122,880		74,297
Fiscal Year Before Latest Fiscal Year Gross Charge-Offs	622		2,151
Two Years Before Latest Fiscal Year	67,300		96,622
Two Years Before Latest Fiscal Year Gross Charge-Offs	638		2,901
Three Years Before Latest Fiscal Year	87,470		52,235
Three Years Before Latest Fiscal Year Gross Charge-Offs	655		1,869
Four Years Before Latest Fiscal Year	44,483		5,149
Four Years Before Latest Fiscal Year Gross Charge-Offs	365		326
Prior	32,333		30,648
Prior Gross Charge-Offs	204		1,421
Revolving Loans	543		533
Revolving Loans Gross Charge-Offs	0		0
Revolving Loans Converted to Term Loans	0		0
Revolving Loans Converted to Term Loans Gross Charge-Offs	0		0
Total Loans and Leases	401,353		392,628
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, Total	2,484		10,099
Consumer | Other Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	46,344		133,093
Fiscal Year Before Latest Fiscal Year	122,725		74,068
Two Years Before Latest Fiscal Year	67,133		96,376
Three Years Before Latest Fiscal Year	87,111		52,152
Four Years Before Latest Fiscal Year	44,362		5,149
Prior	32,192		30,580
Revolving Loans	543		533
Revolving Loans Converted to Term Loans	0		0
Total Loans and Leases	400,410		391,951
Consumer | Other Loans | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0		51
Fiscal Year Before Latest Fiscal Year	155		229
Two Years Before Latest Fiscal Year	167		246
Three Years Before Latest Fiscal Year	359		83
Four Years Before Latest Fiscal Year	121		0
Prior	141		68
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total Loans and Leases	$ 943		$ 677