Fair Value of Financial Instruments - Carrying and Fair Value of Assets and Liabilities on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Assets:
Investment securities available-for-sale	$ 866,684	$ 895,034
Derivatives	63,525	103,603
Liabilities:
Derivatives	63,847	105,255
Investment securities available for sale \| Recurring basis
Assets:
Investment securities available-for-sale	866,684	895,034
Investment securities available for sale \| Recurring basis \| Level 1
Assets:
Investment securities available-for-sale	0	0
Investment securities available for sale \| Recurring basis \| Level 2
Assets:
Investment securities available-for-sale	848,525	875,544
Investment securities available for sale \| Recurring basis \| Level 3
Assets:
Investment securities available-for-sale	18,159	19,490
GSE debentures
Assets:
Investment securities available-for-sale	177,685	176,294
GSE debentures \| Recurring basis
Assets:
Investment securities available-for-sale	177,685	176,294
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	177,685	176,294
GSE debentures \| Recurring basis \| Level 3
Assets:
Investment securities available-for-sale	0	0
GSE CMOs
Assets:
Investment securities available-for-sale	54,067	55,543
GSE CMOs \| Recurring basis
Assets:
Investment securities available-for-sale	54,067	55,543
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	54,067	55,543
GSE CMOs \| Recurring basis \| Level 3
Assets:
Investment securities available-for-sale	0	0
GSE MBSs
Assets:
Investment securities available-for-sale	141,187	148,285
GSE MBSs \| Recurring basis
Assets:
Investment securities available-for-sale	141,187	148,285
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	141,187	148,285
GSE MBSs \| Recurring basis \| Level 3
Assets:
Investment securities available-for-sale	0	0
Municipal obligations
Assets:
Investment securities available-for-sale	18,946	20,254
Municipal obligations \| Recurring basis
Assets:
Investment securities available-for-sale	18,946	20,254
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	3,250	3,198
Municipal obligations \| Recurring basis \| Level 3
Assets:
Investment securities available-for-sale	15,696	17,056
Corporate debt obligations
Assets:
Investment securities available-for-sale	12,226	12,287
Corporate debt obligations \| Recurring basis
Assets:
Investment securities available-for-sale	12,226	12,287
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	9,763	9,853
Corporate debt obligations \| Recurring basis \| Level 3
Assets:
Investment securities available-for-sale	2,463	2,434
U.S. Treasury bonds
Assets:
Investment securities available-for-sale	462,100	481,900
U.S. Treasury bonds \| Recurring basis
Assets:
Investment securities available-for-sale	462,073	481,872
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	462,073	481,872
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	499
Foreign government obligations \| Recurring basis
Assets:
Investment securities available-for-sale	500	499
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	499
Foreign government obligations \| Recurring basis \| Level 3
Assets:
Investment securities available-for-sale	0	0
Interest rate derivatives \| Recurring basis
Assets:
Derivatives	27	18
Liabilities:
Derivatives	802	2,051
Interest rate derivatives \| Recurring basis \| Level 1
Assets:
Derivatives	0	0
Liabilities:
Derivatives	0	0
Interest rate derivatives \| Recurring basis \| Level 2
Assets:
Derivatives	27	18
Liabilities:
Derivatives	802	2,051
Interest rate derivatives \| Recurring basis \| Level 3
Assets:
Derivatives	0	0
Liabilities:
Derivatives	0	0
Loan level derivatives \| Recurring basis
Assets:
Derivatives	62,488	102,608
Liabilities:
Derivatives	62,488	102,608
Loan level derivatives \| Recurring basis \| Level 1
Assets:
Derivatives	0	0
Liabilities:
Derivatives	0	0
Loan level derivatives \| Recurring basis \| Level 2
Assets:
Derivatives	62,488	102,608
Liabilities:
Derivatives	62,488	102,608
Loan level derivatives \| Recurring basis \| Level 3
Assets:
Derivatives	0	0
Liabilities:
Derivatives	0	0
Risk participation-out agreements \| Recurring basis
Assets:
Derivatives	553	495
Risk participation-out agreements \| Recurring basis \| Level 1
Assets:
Derivatives	0	0
Risk participation-out agreements \| Recurring basis \| Level 2
Assets:
Derivatives	553	495
Risk participation-out agreements \| Recurring basis \| Level 3
Assets:
Derivatives	0	0
Foreign exchange contracts \| Recurring basis
Assets:
Derivatives	457	482
Liabilities:
Derivatives	378	459
Foreign exchange contracts \| Recurring basis \| Level 1
Assets:
Derivatives	0	0
Liabilities:
Derivatives	0	0
Foreign exchange contracts \| Recurring basis \| Level 2
Assets:
Derivatives	457	482
Liabilities:
Derivatives	378	459
Foreign exchange contracts \| Recurring basis \| Level 3
Assets:
Derivatives	0	0
Liabilities:
Derivatives	0	0
Risk participation-in agreements \| Recurring basis
Liabilities:
Derivatives	179	137
Risk participation-in agreements \| Recurring basis \| Level 1
Liabilities:
Derivatives	0	0
Risk participation-in agreements \| Recurring basis \| Level 2
Liabilities:
Derivatives	179	137
Risk participation-in agreements \| Recurring basis \| Level 3
Liabilities:
Derivatives	$ 0	$ 0