Loans and the Allowance for Credit Losses - Summary of Aging Analysis of Portfolio Loans Restructured (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	$ 12,257,511	$ 11,638,461
ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	28,923		$ 24,286
Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	770,599	734,219
Home Equity [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	941		758
Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,760,479	1,670,659
Commercial and Industrial [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	505		9,311
Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	6,998,888	6,565,448
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,061,390	1,055,865
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	5		6,449
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	5,937,498	5,509,583
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	25,601		7,375
Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	2,506,957	2,438,574
Residential Real Estate [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,553		100
Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	220,588	229,561
Consumer [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	318		293
30-59 Days Past Due [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	11,656	15,152
30-59 Days Past Due [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	127		161
30-59 Days Past Due [Member] | Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	3,662	4,691
30-59 Days Past Due [Member] | Home Equity [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	15		18
30-59 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	831	640
30-59 Days Past Due [Member] | Commercial and Industrial [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	91		143
30-59 Days Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	2,415	4,416
30-59 Days Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	2,415	4,416
30-59 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,123	1,572
30-59 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	3,625	3,833
30-59 Days Past Due [Member] | Consumer [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	21
60-89 Days Past Due [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	9,893	9,729
60-89 Days Past Due [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	97
60-89 Days Past Due [Member] | Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,425	1,198
60-89 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,334	1,255
60-89 Days Past Due [Member] | Commercial and Industrial [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	9
60-89 Days Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	2,119	3,627
60-89 Days Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	2,119	3,627
60-89 Days Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	16
60-89 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	3,987	2,471
60-89 Days Past Due [Member] | Residential Real Estate [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	36
60-89 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,028	1,178
60-89 Days Past Due [Member] | Consumer [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	36
90 Days or More Past Due [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	32,559	25,302
90 Days or More Past Due [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	472		362
90 Days or More Past Due [Member] | Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	4,748	4,037
90 Days or More Past Due [Member] | Home Equity [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	176		72
90 Days or More Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	4,427	4,779
90 Days or More Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	15,918	10,594
90 Days or More Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	15,918	10,594
90 Days or More Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan			270
90 Days or More Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	7,032	5,331
90 Days or More Past Due [Member] | Residential Real Estate [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	265
90 Days or More Past Due [Member] | Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	434	561
90 Days or More Past Due [Member] | Consumer [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	31		20
Total Past Due [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	54,108	50,183
Total Past Due [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	696		523
Total Past Due [Member] | Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	9,835	9,926
Total Past Due [Member] | Home Equity [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	191		90
Total Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	6,592	6,674
Total Past Due [Member] | Commercial and Industrial [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	100		143
Total Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	20,452	18,637
Total Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	20,452	18,637
Total Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	16		270
Total Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	12,142	9,374
Total Past Due [Member] | Residential Real Estate [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	301
Total Past Due [Member] | Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	5,087	5,572
Total Past Due [Member] | Consumer [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	88		20
Current [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	12,203,403	11,588,278
Current [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	28,227		23,763
Current [Member] | Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	760,764	724,293
Current [Member] | Home Equity [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	750		668
Current [Member] | Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,753,887	1,663,985
Current [Member] | Commercial and Industrial [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	405		9,168
Current [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	6,978,436	6,546,811
Current [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,061,390	1,055,865
Current [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	5		6,449
Current [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	5,917,046	5,490,946
Current [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	25,585		7,105
Current [Member] | Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	2,494,815	2,429,200
Current [Member] | Residential Real Estate [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,252		100
Current [Member] | Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	215,501	$ 223,989
Current [Member] | Consumer [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	$ 230		$ 273