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Allowance for Credit Losses - Schedule of Information Regarding the Aging of Past Due Loans, By Loan Class (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Age analysis of past due loans |  |
Total Loans and Leases | $ 18,029,552,000 | $ 9,779,288,000
Past Due Greater Than 90 Days and Accruing | 37,823,000 | 811,000
Non-accrual | 114,156,000 | 69,349,000
Non-accrual with no related Allowance | 8,027,000 | 12,153,000
Interest income on nonaccrual loans | 0 | 0
Commercial real estate |  |
Age analysis of past due loans |  |
Total Loans and Leases | 7,235,397,000 | 4,027,265,000
Multi-family mortgage |  |
Age analysis of past due loans |  |
Total Loans and Leases | 2,155,980,000 | 1,387,796,000
Construction |  |
Age analysis of past due loans |  |
Total Loans and Leases | 620,717,000 | 301,053,000
Commercial |  |
Age analysis of past due loans |  |
Total Loans and Leases | 2,784,152,000 | 1,211,714,000
Equipment financing |  |
Age analysis of past due loans |  |
Total Loans and Leases | 1,163,211,000 | 1,294,950,000
Residential mortgage |  |
Age analysis of past due loans |  |
Total Loans and Leases | 3,233,425,000 | 1,114,732,000
Home equity |  |
Age analysis of past due loans |  |
Total Loans and Leases | 695,307,000 | 377,411,000
Other consumer |  |
Age analysis of past due loans |  |
Total Loans and Leases | 141,363,000 | 64,367,000
Commercial real estate loans |  |
Age analysis of past due loans |  |
Total Loans and Leases | 10,012,094,000 | 5,716,114,000
Past Due Greater Than 90 Days and Accruing | 32,590,000 | 629,000
Non-accrual | 45,311,000 | 18,121,000
Non-accrual with no related Allowance | 2,406,000 | 7,288,000
Commercial real estate loans | Commercial real estate |  |
Age analysis of past due loans |  |
Total Loans and Leases | 7,235,397,000 | 4,027,265,000
Past Due Greater Than 90 Days and Accruing | 3,250,000 | 629,000
Non-accrual | 41,246,000 | 11,525,000
Non-accrual with no related Allowance | 1,340,000 | 683,000
Commercial real estate loans | Multi-family mortgage |  |
Age analysis of past due loans |  |
Total Loans and Leases | 2,155,980,000 | 1,387,796,000
Past Due Greater Than 90 Days and Accruing | 14,340,000 | 0
Non-accrual | 4,065,000 | 6,596,000
Non-accrual with no related Allowance | 1,066,000 | 6,605,000
Commercial real estate loans | Construction |  |
Age analysis of past due loans |  |
Total Loans and Leases | 620,717,000 | 301,053,000
Past Due Greater Than 90 Days and Accruing | 15,000,000 | 0
Non-accrual | 0 | 0
Non-accrual with no related Allowance | 0 | 0
Commercial loans and leases |  |
Age analysis of past due loans |  |
Total Loans and Leases | 3,947,363,000 | 2,506,664,000
Past Due Greater Than 90 Days and Accruing | 432,000 | 0
Non-accrual | 59,434,000 | 46,185,000
Non-accrual with no related Allowance | 4,266,000 | 2,506,000
Commercial loans and leases | Commercial |  |
Age analysis of past due loans |  |
Total Loans and Leases | 2,784,152,000 | 1,211,714,000
Past Due Greater Than 90 Days and Accruing | 320,000 | 0
Non-accrual | 16,716,000 | 14,676,000
Non-accrual with no related Allowance | 1,735,000 | 326,000
Commercial loans and leases | Equipment financing |  |
Age analysis of past due loans |  |
Total Loans and Leases | 1,163,211,000 | 1,294,950,000
Past Due Greater Than 90 Days and Accruing | 112,000 | 0
Non-accrual | 42,718,000 | 31,509,000
Non-accrual with no related Allowance | 2,531,000 | 2,180,000
Commercial loans and leases | Condominium association |  |
Age analysis of past due loans |  |
Total Loans and Leases | 0 | 0
Past Due Greater Than 90 Days and Accruing | 0 | 0
Non-accrual | 0 | 0
Non-accrual with no related Allowance | 0 | 0
Consumer loans |  |
Age analysis of past due loans |  |
Total Loans and Leases | 4,070,095,000 | 1,556,510,000
Past Due Greater Than 90 Days and Accruing | 4,801,000 | 182,000
Non-accrual | 9,411,000 | 5,043,000
Non-accrual with no related Allowance | 1,355,000 | 2,359,000
Consumer loans | Residential mortgage |  |
Age analysis of past due loans |  |
Total Loans and Leases | 3,233,425,000 | 1,114,732,000
Past Due Greater Than 90 Days and Accruing | 3,970,000 | 130,000
Non-accrual | 6,465,000 | 3,999,000
Non-accrual with no related Allowance | 1,323,000 | 2,359,000
Consumer loans | Home equity |  |
Age analysis of past due loans |  |
Total Loans and Leases | 695,307,000 | 377,411,000
Past Due Greater Than 90 Days and Accruing | 811,000 | 52,000
Non-accrual | 2,811,000 | 1,043,000
Non-accrual with no related Allowance | 32,000 | 0
Consumer loans | Other consumer |  |
Age analysis of past due loans |  |
Total Loans and Leases | 141,363,000 | 64,367,000
Past Due Greater Than 90 Days and Accruing | 20,000 | 0
Non-accrual | 135,000 | 1,000
Non-accrual with no related Allowance | 0 | 0
Past Due |  |
Age analysis of past due loans |  |
Total Loans and Leases | 176,242,000 | 73,892,000
Past Due | Commercial real estate loans |  |
Age analysis of past due loans |  |
Total Loans and Leases | 73,016,000 | 29,740,000
Past Due | Commercial real estate loans | Commercial real estate |  |
Age analysis of past due loans |  |
Total Loans and Leases | 39,468,000 | 20,408,000
Past Due | Commercial real estate loans | Multi-family mortgage |  |
Age analysis of past due loans |  |
Total Loans and Leases | 18,548,000 | 9,332,000
Past Due | Commercial real estate loans | Construction |  |
Age analysis of past due loans |  |
Total Loans and Leases | 15,000,000 | 0
Past Due | Commercial loans and leases |  |
Age analysis of past due loans |  |
Total Loans and Leases | 76,543,000 | 38,889,000
Past Due | Commercial loans and leases | Commercial |  |
Age analysis of past due loans |  |
Total Loans and Leases | 19,779,000 | 3,171,000
Past Due | Commercial loans and leases | Equipment financing |  |
Age analysis of past due loans |  |
Total Loans and Leases | 56,764,000 | 35,718,000
Past Due | Commercial loans and leases | Condominium association |  |
Age analysis of past due loans |  |
Total Loans and Leases | 0 | 0
Past Due | Consumer loans |  |
Age analysis of past due loans |  |
Total Loans and Leases | 26,683,000 | 5,263,000
Past Due | Consumer loans | Residential mortgage |  |
Age analysis of past due loans |  |
Total Loans and Leases | 20,886,000 | 4,072,000
Past Due | Consumer loans | Home equity |  |
Age analysis of past due loans |  |
Total Loans and Leases | 5,309,000 | 1,186,000
Past Due | Consumer loans | Other consumer |  |
Age analysis of past due loans |  |
Total Loans and Leases | 488,000 | 5,000
31-60 Days |  |
Age analysis of past due loans |  |
Total Loans and Leases | 37,280,000 | 19,193,000
31-60 Days | Commercial real estate loans |  |
Age analysis of past due loans |  |
Total Loans and Leases | 10,496,000 | 9,433,000
31-60 Days | Commercial real estate loans | Commercial real estate |  |
Age analysis of past due loans |  |
Total Loans and Leases | 10,348,000 | 6,570,000
31-60 Days | Commercial real estate loans | Multi-family mortgage |  |
Age analysis of past due loans |  |
Total Loans and Leases | 148,000 | 2,863,000
31-60 Days | Commercial real estate loans | Construction |  |
Age analysis of past due loans |  |
Total Loans and Leases | 0 | 0
31-60 Days | Commercial loans and leases |  |
Age analysis of past due loans |  |
Total Loans and Leases | 15,275,000 | 6,923,000
31-60 Days | Commercial loans and leases | Commercial |  |
Age analysis of past due loans |  |
Total Loans and Leases | 2,762,000 | 783,000
31-60 Days | Commercial loans and leases | Equipment financing |  |
Age analysis of past due loans |  |
Total Loans and Leases | 12,513,000 | 6,140,000
31-60 Days | Commercial loans and leases | Condominium association |  |
Age analysis of past due loans |  |
Total Loans and Leases | 0 | 0
31-60 Days | Consumer loans |  |
Age analysis of past due loans |  |
Total Loans and Leases | 11,509,000 | 2,837,000
31-60 Days | Consumer loans | Residential mortgage |  |
Age analysis of past due loans |  |
Total Loans and Leases | 8,429,000 | 2,015,000
31-60 Days | Consumer loans | Home equity |  |
Age analysis of past due loans |  |
Total Loans and Leases | 2,793,000 | 818,000
31-60 Days | Consumer loans | Other consumer |  |
Age analysis of past due loans |  |
Total Loans and Leases | 287,000 | 4,000
61-90 Days |  |
Age analysis of past due loans |  |
Total Loans and Leases | 20,244,000 | 6,119,000
61-90 Days | Commercial real estate loans |  |
Age analysis of past due loans |  |
Total Loans and Leases | 7,457,000 | 1,685,000
61-90 Days | Commercial real estate loans | Commercial real estate |  |
Age analysis of past due loans |  |
Total Loans and Leases | 7,457,000 | 1,685,000
61-90 Days | Commercial real estate loans | Multi-family mortgage |  |
Age analysis of past due loans |  |
Total Loans and Leases | 0 | 0
61-90 Days | Commercial real estate loans | Construction |  |
Age analysis of past due loans |  |
Total Loans and Leases | 0 | 0
61-90 Days | Commercial loans and leases |  |
Age analysis of past due loans |  |
Total Loans and Leases | 7,675,000 | 4,201,000
61-90 Days | Commercial loans and leases | Commercial |  |
Age analysis of past due loans |  |
Total Loans and Leases | 219,000 | 1,693,000
61-90 Days | Commercial loans and leases | Equipment financing |  |
Age analysis of past due loans |  |
Total Loans and Leases | 7,456,000 | 2,508,000
61-90 Days | Commercial loans and leases | Condominium association |  |
Age analysis of past due loans |  |
Total Loans and Leases | 0 | 0
61-90 Days | Consumer loans |  |
Age analysis of past due loans |  |
Total Loans and Leases | 5,112,000 | 233,000
61-90 Days | Consumer loans | Residential mortgage |  |
Age analysis of past due loans |  |
Total Loans and Leases | 4,014,000 | 0
61-90 Days | Consumer loans | Home equity |  |
Age analysis of past due loans |  |
Total Loans and Leases | 1,030,000 | 233,000
61-90 Days | Consumer loans | Other consumer |  |
Age analysis of past due loans |  |
Total Loans and Leases | 68,000 | 0
Greater Than 90 Days |  |
Age analysis of past due loans |  |
Total Loans and Leases | 118,718,000 | 48,580,000
Greater Than 90 Days | Commercial real estate loans |  |
Age analysis of past due loans |  |
Total Loans and Leases | 55,063,000 | 18,622,000
Greater Than 90 Days | Commercial real estate loans | Commercial real estate |  |
Age analysis of past due loans |  |
Total Loans and Leases | 21,663,000 | 12,153,000
Greater Than 90 Days | Commercial real estate loans | Multi-family mortgage |  |
Age analysis of past due loans |  |
Total Loans and Leases | 18,400,000 | 6,469,000
Greater Than 90 Days | Commercial real estate loans | Construction |  |
Age analysis of past due loans |  |
Total Loans and Leases | 15,000,000 | 0
Greater Than 90 Days | Commercial loans and leases |  |
Age analysis of past due loans |  |
Total Loans and Leases | 53,593,000 | 27,765,000
Greater Than 90 Days | Commercial loans and leases | Commercial |  |
Age analysis of past due loans |  |
Total Loans and Leases | 16,798,000 | 695,000
Greater Than 90 Days | Commercial loans and leases | Equipment financing |  |
Age analysis of past due loans |  |
Total Loans and Leases | 36,795,000 | 27,070,000
Greater Than 90 Days | Commercial loans and leases | Condominium association |  |
Age analysis of past due loans |  |
Total Loans and Leases | 0 | 0
Greater Than 90 Days | Consumer loans |  |
Age analysis of past due loans |  |
Total Loans and Leases | 10,062,000 | 2,193,000
Greater Than 90 Days | Consumer loans | Residential mortgage |  |
Age analysis of past due loans |  |
Total Loans and Leases | 8,443,000 | 2,057,000
Greater Than 90 Days | Consumer loans | Home equity |  |
Age analysis of past due loans |  |
Total Loans and Leases | 1,486,000 | 135,000
Greater Than 90 Days | Consumer loans | Other consumer |  |
Age analysis of past due loans |  |
Total Loans and Leases | 133,000 | 1,000
Current |  |
Age analysis of past due loans |  |
Total Loans and Leases | 17,853,310,000 | 9,705,396,000
Current | Commercial real estate loans |  |
Age analysis of past due loans |  |
Total Loans and Leases | 9,939,078,000 | 5,686,374,000
Current | Commercial real estate loans | Commercial real estate |  |
Age analysis of past due loans |  |
Total Loans and Leases | 7,195,929,000 | 4,006,857,000
Current | Commercial real estate loans | Multi-family mortgage |  |
Age analysis of past due loans |  |
Total Loans and Leases | 2,137,432,000 | 1,378,464,000
Current | Commercial real estate loans | Construction |  |
Age analysis of past due loans |  |
Total Loans and Leases | 605,717,000 | 301,053,000
Current | Commercial loans and leases |  |
Age analysis of past due loans |  |
Total Loans and Leases | 3,870,820,000 | 2,467,775,000
Current | Commercial loans and leases | Commercial |  |
Age analysis of past due loans |  |
Total Loans and Leases | 2,764,373,000 | 1,208,543,000
Current | Commercial loans and leases | Equipment financing |  |
Age analysis of past due loans |  |
Total Loans and Leases | 1,106,447,000 | 1,259,232,000
Current | Commercial loans and leases | Condominium association |  |
Age analysis of past due loans |  |
Total Loans and Leases | 0 | 0
Current | Consumer loans |  |
Age analysis of past due loans |  |
Total Loans and Leases | 4,043,412,000 | 1,551,247,000
Current | Consumer loans | Residential mortgage |  |
Age analysis of past due loans |  |
Total Loans and Leases | 3,212,539,000 | 1,110,660,000
Current | Consumer loans | Home equity |  |
Age analysis of past due loans |  |
Total Loans and Leases | 689,998,000 | 376,225,000
Current | Consumer loans | Other consumer |  |
Age analysis of past due loans |  |
Total Loans and Leases | $ 140,875,000 | $ 64,362,000

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