Loans - Summary of Term Loans by Origination Year (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Total		$ 11,000,007		$ 10,884,118
Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Weighted Average Term Extension (in months)	5 months	12 months	5 months
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
45657		$ 842,799		1,633,085
45291		1,315,498		1,078,613
44926		767,715		355,722
44561		252,844		196,328
44196		145,541		124,217
Prior		105,390		71,810
Revolving Loans Converted to Term Loans		19,215		12,943
Revolving Loans		1,143,742		1,173,653
Total		4,592,744		4,646,371
Commercial and industrial | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		806,687		1,567,738
45291		1,263,986		1,052,462
44926		732,677		345,292
44561		248,485		194,972
44196		145,095		123,425
Prior		104,330		71,205
Revolving Loans Converted to Term Loans		14,802		12,163
Revolving Loans		1,037,021		1,108,233
Total		4,353,083		4,475,490
Commercial and industrial | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		15,953		52,523
45291		47,110		6,845
44926		24,119		8,597
44561		2,483		544
44196		334		453
Prior		767		242
Revolving Loans Converted to Term Loans		366		272
Revolving Loans		66,698		19,590
Total		157,830		89,066
Commercial and industrial | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		20,159		12,824
45291		4,402		19,306
44926		10,919		1,833
44561		1,876		812
44196		112		339
Prior		293		363
Revolving Loans Converted to Term Loans		4,047		508
Revolving Loans		40,023		45,830
Total		81,831		81,815
Commercial real estate-investor owned
Financing Receivable, Credit Quality Indicator [Line Items]
45657		205,130		508,168
45291		472,164		567,982
44926		521,334		544,868
44561		522,005		340,670
44196		312,232		168,338
Prior		361,083		247,359
Revolving Loans Converted to Term Loans		6,476		5,270
Revolving Loans		50,287		51,413
Total		2,450,711		2,434,068
Commercial real estate-investor owned | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		204,356		495,131
45291		467,322		544,223
44926		508,800		492,974
44561		469,794		323,175
44196		292,377		165,343
Prior		348,941		236,914
Revolving Loans Converted to Term Loans		6,476		5,222
Revolving Loans		48,289		51,413
Total		2,346,355		2,314,395
Commercial real estate-investor owned | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		774		3,626
45291		4,842		22,725
44926		12,258		51,851
44561		52,169		1,657
44196		3,519		164
Prior		7,447		5,526
Revolving Loans Converted to Term Loans		0		0
Revolving Loans		1,998		0
Total		83,007		85,549
Commercial real estate-investor owned | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		0		9,411
45291		0		1,034
44926		276		43
44561		42		15,838
44196		16,336		2,831
Prior		4,695		4,919
Revolving Loans Converted to Term Loans		0		48
Revolving Loans		0		0
Total		21,349		34,124
Commercial real estate-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
45657		201,404		425,029
45291		421,007		492,635
44926		470,572		496,488
44561		461,618		315,072
44196		283,425		198,189
Prior		481,120		354,164
Revolving Loans Converted to Term Loans		8,155		10,139
Revolving Loans		33,348		31,529
Total		2,360,649		2,323,245
Commercial real estate-owner occupied | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		192,817		407,901
45291		408,883		486,701
44926		461,485		489,589
44561		445,101		301,399
44196		270,500		183,872
Prior		426,480		313,474
Revolving Loans Converted to Term Loans		4,595		5,083
Revolving Loans		31,631		30,036
Total		2,241,492		2,218,055
Commercial real estate-owner occupied | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		7,412		13,739
45291		8,255		2,521
44926		5,206		4,652
44561		13,226		10,492
44196		9,541		5,439
Prior		19,780		15,833
Revolving Loans Converted to Term Loans		0		0
Revolving Loans		1,717		1,493
Total		65,137		54,169
Commercial real estate-owner occupied | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		1,175		3,389
45291		3,869		3,413
44926		3,881		2,247
44561		3,291		3,181
44196		3,384		8,878
Prior		34,860		24,857
Revolving Loans Converted to Term Loans		3,560		5,056
Revolving Loans		0		0
Total		54,020		51,021
Construction real estate
Financing Receivable, Credit Quality Indicator [Line Items]
45657		251,067		293,868
45291		227,376		328,672
44926		291,127		97,472
44561		83,831		31,166
44196		30,767		1,549
Prior		4,934		3,988
Revolving Loans Converted to Term Loans		8		10
Revolving Loans		4,562		3,700
Total		893,672		760,425
Construction real estate | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		240,582		292,689
45291		226,597		325,010
44926		289,506		96,426
44561		83,531		30,956
44196		30,767		1,413
Prior		4,233		3,408
Revolving Loans Converted to Term Loans		8		10
Revolving Loans		4,562		3,700
Total		879,786		753,612
Construction real estate | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		10,485		42
45291		38		2,958
44926		1,043		1,046
44561		300		210
44196		0		123
Prior		226		114
Revolving Loans Converted to Term Loans		0		0
Revolving Loans		0		0
Total		12,092		4,493
Construction real estate | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		0		1,137
45291		741		704
44926		578		0
44561		0		0
44196		0		13
Prior		475		466
Revolving Loans Converted to Term Loans		0		0
Revolving Loans		0		0
Total		1,794		2,320
Residential
Financing Receivable, Credit Quality Indicator [Line Items]
45657		16,208		59,708
45291		52,712		43,029
44926		38,662		51,505
44561		47,372		30,713
44196		29,419		17,898
Prior		89,948		80,620
Revolving Loans Converted to Term Loans		2,347		1,538
Revolving Loans		74,605		86,465
Total		351,273		371,476
Residential | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		14,804		59,259
45291		52,575		41,956
44926		37,717		51,436
44561		47,372		30,713
44196		29,351		17,793
Prior		86,968		77,327
Revolving Loans Converted to Term Loans		2,125		1,464
Revolving Loans		73,827		78,351
Total		344,739		358,299
Residential | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		1,404		322
45291		43		0
44926		834		0
44561		0		0
44196		68		75
Prior		1,289		1,801
Revolving Loans Converted to Term Loans		150		0
Revolving Loans		670		614
Total		4,458		2,812
Residential | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		0		127
45291		94		1,073
44926		111		69
44561		0		0
44196		0		30
Prior		1,691		1,492
Revolving Loans Converted to Term Loans		72		74
Revolving Loans		108		7,500
Total		2,076		10,365
Other
Financing Receivable, Credit Quality Indicator [Line Items]
45657		6,630		10,071
45291		10,608		55,923
44926		54,931		82,238
44561		72,290		53,569
44196		51,609		9,382
Prior		30,349		19,665
Revolving Loans Converted to Term Loans		4		7
Revolving Loans		48,256		40,109
Total		274,677		270,964
Other | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		6,630		10,071
45291		6,887		55,923
44926		54,931		67,766
44561		62,290		53,569
44196		51,609		9,382
Prior		29,192		19,657
Revolving Loans Converted to Term Loans		4		7
Revolving Loans		38,059		28,464
Total		249,602		244,839
Other | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		0		0
45291		3,721		0
44926		0		14,472
44561		10,000		0
44196		0		0
Prior		1,151		0
Revolving Loans Converted to Term Loans		0		0
Revolving Loans		10,197		11,645
Total		25,069		26,117
Other | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
45657		0		0
45291		0		0
44926		0		0
44561		0		0
44196		0		0
Prior		6		8
Revolving Loans Converted to Term Loans		0		0
Revolving Loans		0		0
Total		6		8
Total loans classified by risk category
Financing Receivable, Credit Quality Indicator [Line Items]
45657		1,523,238		2,929,929
45291		2,499,365		2,566,854
44926		2,144,341		1,628,293
44561		1,439,960		967,518
44196		852,993		519,573
Prior		1,072,824		777,606
Revolving Loans Converted to Term Loans		36,205		29,907
Revolving Loans		1,354,800		1,386,869
Total		10,923,726		10,806,549
Total loans classified by performing status
Financing Receivable, Credit Quality Indicator [Line Items]
Total		$ 76,281		$ 77,569