Fair Value of Financial Instruments - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Assets:
Investment securities available-for-sale	$ 1,761,297	$ 1,688,768
Derivatives	97,804	103,228
Liabilities:
Derivatives	113,052	116,513
Recurring basis
Assets:
Investment securities available-for-sale	1,761,297	1,688,768
Recurring basis \| Interest rate derivatives
Assets:
Derivatives	30	185
Liabilities:
Derivatives	64	179
Recurring basis \| Loan level derivatives
Assets:
Derivatives	96,904	102,237
Liabilities:
Derivatives	112,880	115,937
Recurring basis \| Risk participation-out agreements
Assets:
Derivatives	492	532
Recurring basis \| Foreign exchange contracts
Assets:
Derivatives	378	274
Liabilities:
Derivatives	0	258
Recurring basis \| Risk participation-in agreements
Liabilities:
Derivatives	108	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	1,745,067	1,666,800
Recurring basis \| Level 2 \| Interest rate derivatives
Assets:
Derivatives	30	185
Liabilities:
Derivatives	64	179
Recurring basis \| Level 2 \| Loan level derivatives
Assets:
Derivatives	96,904	102,237
Liabilities:
Derivatives	112,880	115,937
Recurring basis \| Level 2 \| Risk participation-out agreements
Assets:
Derivatives	492	532
Recurring basis \| Level 2 \| Foreign exchange contracts
Assets:
Derivatives	378	274
Liabilities:
Derivatives	0	258
Recurring basis \| Level 2 \| Risk participation-in agreements
Liabilities:
Derivatives	108	139
Recurring basis \| Level 3
Assets:
Investment securities available-for-sale	16,230	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	186,212	173,677
GSE debentures \| Recurring basis
Assets:
Investment securities available-for-sale	186,212	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	186,212	173,677
GSE debentures \| Recurring basis \| Level 3
Assets:
Investment securities available-for-sale	0	0
GSE CMOs
Assets:
Investment securities available-for-sale	657,994	496,570
GSE CMOs \| Recurring basis
Assets:
Investment securities available-for-sale	657,994	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	657,994	496,570
GSE CMOs \| Recurring basis \| Level 3
Assets:
Investment securities available-for-sale	0	0
GSE MBSs
Assets:
Investment securities available-for-sale	304,772	325,745
GSE MBSs \| Recurring basis
Assets:
Investment securities available-for-sale	304,772	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	304,772	325,745
GSE MBSs \| Recurring basis \| Level 3
Assets:
Investment securities available-for-sale	0	0
Municipal obligations
Assets:
Investment securities available-for-sale	227,249	240,216
Municipal obligations \| Recurring basis
Assets:
Investment securities available-for-sale	227,249	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	214,120	221,604
Municipal obligations \| Recurring basis \| Level 3
Assets:
Investment securities available-for-sale	13,129	18,612
Corporate debt obligations
Assets:
Investment securities available-for-sale	25,135	40,023
Corporate debt obligations \| Recurring basis
Assets:
Investment securities available-for-sale	25,135	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	22,034	36,667
Corporate debt obligations \| Recurring basis \| Level 3
Assets:
Investment securities available-for-sale	3,101	3,356
U.S. Treasury bonds
Assets:
Investment securities available-for-sale	359,400	412,000
U.S. Treasury bonds \| Recurring basis
Assets:
Investment securities available-for-sale	359,435	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	359,435	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