v3.26.1
Fair Value of Financial Instruments - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Assets:    
Investment securities available-for-sale $ 1,718,710 $ 1,688,768
Derivatives 99,744 103,228
Liabilities:    
Derivatives 113,759 116,513
Recurring basis    
Assets:    
Investment securities available-for-sale 1,718,710 1,688,768
Recurring basis | Interest rate derivatives    
Assets:    
Derivatives 77 185
Liabilities:    
Derivatives 123 179
Recurring basis | Loan level derivatives    
Assets:    
Derivatives 98,732 102,237
Liabilities:    
Derivatives 113,495 115,937
Recurring basis | Risk participation-out agreements    
Assets:    
Derivatives 575 532
Recurring basis | Foreign exchange contracts    
Assets:    
Derivatives 360 274
Liabilities:    
Derivatives 0 258
Recurring basis | Risk participation-in agreements    
Liabilities:    
Derivatives 141 139
Recurring basis | Level 1    
Assets:    
Investment securities available-for-sale 0 0
Recurring basis | Level 1 | Interest rate derivatives    
Assets:    
Derivatives 0 0
Liabilities:    
Derivatives 0 0
Recurring basis | Level 1 | Loan level derivatives    
Assets:    
Derivatives 0 0
Liabilities:    
Derivatives 0 0
Recurring basis | Level 1 | Risk participation-out agreements    
Assets:    
Derivatives 0 0
Recurring basis | Level 1 | Foreign exchange contracts    
Assets:    
Derivatives 0 0
Liabilities:    
Derivatives 0 0
Recurring basis | Level 1 | Risk participation-in agreements    
Liabilities:    
Derivatives 0 0
Recurring basis | Level 2    
Assets:    
Investment securities available-for-sale 1,701,743 1,666,800
Recurring basis | Level 2 | Interest rate derivatives    
Assets:    
Derivatives 77 185
Liabilities:    
Derivatives 123 179
Recurring basis | Level 2 | Loan level derivatives    
Assets:    
Derivatives 98,732 102,237
Liabilities:    
Derivatives 113,495 115,937
Recurring basis | Level 2 | Risk participation-out agreements    
Assets:    
Derivatives 575 532
Recurring basis | Level 2 | Foreign exchange contracts    
Assets:    
Derivatives 360 274
Liabilities:    
Derivatives 0 258
Recurring basis | Level 2 | Risk participation-in agreements    
Liabilities:    
Derivatives 141 139
Recurring basis | Level 3    
Assets:    
Investment securities available-for-sale 16,967 21,968
Recurring basis | Level 3 | Interest rate derivatives    
Assets:    
Derivatives 0 0
Liabilities:    
Derivatives 0 0
Recurring basis | Level 3 | Loan level derivatives    
Assets:    
Derivatives 0 0
Liabilities:    
Derivatives 0 0
Recurring basis | Level 3 | Risk participation-out agreements    
Assets:    
Derivatives 0 0
Recurring basis | Level 3 | Foreign exchange contracts    
Assets:    
Derivatives 0 0
Liabilities:    
Derivatives 0 0
Recurring basis | Level 3 | Risk participation-in agreements    
Liabilities:    
Derivatives 0 0
GSE debentures    
Assets:    
Investment securities available-for-sale 178,596 173,677
GSE debentures | Recurring basis    
Assets:    
Investment securities available-for-sale 178,596 173,677
GSE debentures | Recurring basis | Level 1    
Assets:    
Investment securities available-for-sale 0 0
GSE debentures | Recurring basis | Level 2    
Assets:    
Investment securities available-for-sale 178,596 173,677
GSE debentures | Recurring basis | Level 3    
Assets:    
Investment securities available-for-sale 0 0
GSE CMOs    
Assets:    
Investment securities available-for-sale 553,581 496,570
GSE CMOs | Recurring basis    
Assets:    
Investment securities available-for-sale 553,581 496,570
GSE CMOs | Recurring basis | Level 1    
Assets:    
Investment securities available-for-sale 0 0
GSE CMOs | Recurring basis | Level 2    
Assets:    
Investment securities available-for-sale 553,581 496,570
GSE CMOs | Recurring basis | Level 3    
Assets:    
Investment securities available-for-sale 0 0
GSE MBSs    
Assets:    
Investment securities available-for-sale 316,124 325,745
GSE MBSs | Recurring basis    
Assets:    
Investment securities available-for-sale 316,124 325,745
GSE MBSs | Recurring basis | Level 1    
Assets:    
Investment securities available-for-sale 0 0
GSE MBSs | Recurring basis | Level 2    
Assets:    
Investment securities available-for-sale 316,124 325,745
GSE MBSs | Recurring basis | Level 3    
Assets:    
Investment securities available-for-sale 0 0
Municipal obligations    
Assets:    
Investment securities available-for-sale 228,488 240,216
Municipal obligations | Recurring basis    
Assets:    
Investment securities available-for-sale 228,488 240,216
Municipal obligations | Recurring basis | Level 1    
Assets:    
Investment securities available-for-sale 0 0
Municipal obligations | Recurring basis | Level 2    
Assets:    
Investment securities available-for-sale 214,602 221,604
Municipal obligations | Recurring basis | Level 3    
Assets:    
Investment securities available-for-sale 13,886 18,612
Corporate debt obligations    
Assets:    
Investment securities available-for-sale 35,994 40,023
Corporate debt obligations | Recurring basis    
Assets:    
Investment securities available-for-sale 35,994 40,023
Corporate debt obligations | Recurring basis | Level 1    
Assets:    
Investment securities available-for-sale 0 0
Corporate debt obligations | Recurring basis | Level 2    
Assets:    
Investment securities available-for-sale 32,913 36,667
Corporate debt obligations | Recurring basis | Level 3    
Assets:    
Investment securities available-for-sale 3,081 3,356
U.S. Treasury bonds    
Assets:    
Investment securities available-for-sale 405,400 412,000
U.S. Treasury bonds | Recurring basis    
Assets:    
Investment securities available-for-sale 405,427 412,037
U.S. Treasury bonds | Recurring basis | Level 1    
Assets:    
Investment securities available-for-sale 0 0
U.S. Treasury bonds | Recurring basis | Level 2    
Assets:    
Investment securities available-for-sale 405,427 412,037
U.S. Treasury bonds | Recurring basis | Level 3    
Assets:    
Investment securities available-for-sale 0 0
Foreign government obligations    
Assets:    
Investment securities available-for-sale 500 500
Foreign government obligations | Recurring basis    
Assets:    
Investment securities available-for-sale 500 500
Foreign government obligations | Recurring basis | Level 1    
Assets:    
Investment securities available-for-sale 0 0
Foreign government obligations | Recurring basis | Level 2    
Assets:    
Investment securities available-for-sale 500 500
Foreign government obligations | Recurring basis | Level 3    
Assets:    
Investment securities available-for-sale $ 0 $ 0