v3.26.1
Loans and Leases - Schedule of Loan and Lease Balances for the Originated and Acquired Portfolios (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance $ 17,924,156 $ 18,029,552
Weighted Average Coupon 5.74% 5.78%
Commercial real estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance $ 7,187,735 $ 7,235,397
Multi-family mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance 2,148,297 2,155,980
Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance 621,376 620,717
Commercial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance 2,938,469 2,784,152
Equipment financing    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance 1,073,505 1,163,211
Residential mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance 3,167,549 3,233,425
Home equity    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance 656,237 695,307
Other consumer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance 130,988 141,363
Commercial real estate loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance $ 9,957,408 $ 10,012,094
Weighted Average Coupon 5.54% 5.58%
Commercial real estate loans | Commercial real estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance $ 7,187,735 $ 7,235,397
Weighted Average Coupon 5.54% 5.58%
Commercial real estate loans | Multi-family mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance $ 2,148,297 $ 2,155,980
Weighted Average Coupon 5.27% 5.29%
Commercial real estate loans | Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance $ 621,376 $ 620,717
Weighted Average Coupon 6.55% 6.61%
Commercial loans and leases    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance $ 4,011,974 $ 3,947,363
Weighted Average Coupon 6.91% 6.99%
Commercial loans and leases | Commercial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance $ 2,938,469 $ 2,784,152
Weighted Average Coupon 6.27% 6.34%
Commercial loans and leases | Equipment financing    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance $ 1,073,505 $ 1,163,211
Weighted Average Coupon 8.67% 8.55%
Consumer loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance $ 3,954,774 $ 4,070,095
Weighted Average Coupon 5.07% 5.09%
Consumer loans | Residential mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance $ 3,167,549 $ 3,233,425
Weighted Average Coupon 4.81% 4.82%
Consumer loans | Home equity    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance $ 656,237 $ 695,307
Weighted Average Coupon 6.30% 6.30%
Consumer loans | Other consumer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance $ 130,988 $ 141,363
Weighted Average Coupon 5.27% 5.25%