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Loans and Leases - Schedule of Loan and Lease Balances for the Originated and Acquired Portfolios (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | $ 18,029,552 | $ 9,779,288
Weighted Average Coupon | 5.78% | 5.91%
Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | $ 7,235,397 | $ 4,027,265
Multi-family mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | 2,155,980 | 1,387,796
Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | 620,717 | 301,053
Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | 2,784,152 | 1,211,714
Equipment financing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | 1,163,211 | 1,294,950
Residential mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | 3,233,425 | 1,114,732
Home equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | 695,307 | 377,411
Other consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | 141,363 | 64,367
Commercial real estate loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | $ 10,012,094 | $ 5,716,114
Weighted Average Coupon | 5.58% | 5.40%
Commercial real estate loans | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | $ 7,235,397 | $ 4,027,265
Weighted Average Coupon | 5.58% | 5.40%
Commercial real estate loans | Multi-family mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | $ 2,155,980 | $ 1,387,796
Weighted Average Coupon | 5.29% | 5.06%
Commercial real estate loans | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | $ 620,717 | $ 301,053
Weighted Average Coupon | 6.61% | 7.00%
Commercial loans and leases |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | $ 3,947,363 | $ 2,506,664
Weighted Average Coupon | 6.99% | 7.40%
Commercial loans and leases | Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | $ 2,784,152 | $ 1,211,714
Weighted Average Coupon | 6.34% | 6.47%
Commercial loans and leases | Equipment financing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | $ 1,163,211 | $ 1,294,950
Weighted Average Coupon | 8.55% | 8.27%
Consumer loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | $ 4,070,095 | $ 1,556,510
Weighted Average Coupon | 5.09% | 5.38%
Consumer loans | Residential mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | $ 3,233,425 | $ 1,114,732
Weighted Average Coupon | 4.82% | 4.69%
Consumer loans | Home equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | $ 695,307 | $ 377,411
Weighted Average Coupon | 6.30% | 7.18%
Consumer loans | Other consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance | $ 141,363 | $ 64,367
Weighted Average Coupon | 5.25% | 6.67%

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