Fair Value of Assets and Liabilities - Fair Value Measurements on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Financial Assets
Debt securities, available for sale	$ 4,172,312	$ 4,245,205
Recurring Measurements
Financial Assets
Loans held for sale, at fair value	40,523	33,060
Total assets measured at fair value on a recurring basis	4,219,022	4,288,851
Total financial liabilities	377
U.S. government and federal agency
Financial Assets
Debt securities, available for sale	472,122	468,433
U.S. government and federal agency \| Recurring Measurements
Financial Assets
Debt securities, available for sale	472,122	468,433
U.S. government sponsored enterprises
Financial Assets
Debt securities, available for sale	313,508	310,154
U.S. government sponsored enterprises \| Recurring Measurements
Financial Assets
Debt securities, available for sale	313,508	310,154
State and local governments
Financial Assets
Debt securities, available for sale	67,917	68,680
State and local governments \| Recurring Measurements
Financial Assets
Debt securities, available for sale	67,917	68,680
Corporate bonds
Financial Assets
Debt securities, available for sale	14,652	14,503
Corporate bonds \| Recurring Measurements
Financial Assets
Debt securities, available for sale	14,652	14,503
Residential mortgage-backed securities
Financial Assets
Debt securities, available for sale	2,278,421	2,355,516
Residential mortgage-backed securities \| Recurring Measurements
Financial Assets
Debt securities, available for sale	2,278,421	2,355,516
Commercial mortgage-backed securities
Financial Assets
Debt securities, available for sale	1,025,692	1,027,919
Commercial mortgage-backed securities \| Recurring Measurements
Financial Assets
Debt securities, available for sale	1,025,692	1,027,919
Interest rate caps \| Recurring Measurements
Financial Assets
Derivative assets		720
Interest rate locks \| Recurring Measurements
Financial Assets
Derivative assets	1,057	410
TBA hedge \| Recurring Measurements
Financial Assets
Derivative assets		169
Derivative liabilities	377
Interest rate swap \| Recurring Measurements
Financial Assets
Derivative assets	5,130	9,287
Level 1 \| Recurring Measurements
Financial Assets
Loans held for sale, at fair value	0	0
Total assets measured at fair value on a recurring basis	0	0
Total financial liabilities	0
Level 1 \| U.S. government and federal agency \| Recurring Measurements
Financial Assets
Debt securities, available for sale	0	0
Level 1 \| U.S. government sponsored enterprises \| Recurring Measurements
Financial Assets
Debt securities, available for sale	0	0
Level 1 \| State and local governments \| Recurring Measurements
Financial Assets
Debt securities, available for sale	0	0
Level 1 \| Corporate bonds \| Recurring Measurements
Financial Assets
Debt securities, available for sale	0	0
Level 1 \| Residential mortgage-backed securities \| Recurring Measurements
Financial Assets
Debt securities, available for sale	0	0
Level 1 \| Commercial mortgage-backed securities \| Recurring Measurements
Financial Assets
Debt securities, available for sale	0	0
Level 1 \| Interest rate caps \| Recurring Measurements
Financial Assets
Derivative assets		0
Level 1 \| Interest rate locks \| Recurring Measurements
Financial Assets
Derivative assets	0	0
Level 1 \| TBA hedge \| Recurring Measurements
Financial Assets
Derivative assets		0
Derivative liabilities	0
Level 1 \| Interest rate swap \| Recurring Measurements
Financial Assets
Derivative assets	0	0
Level 2 \| Recurring Measurements
Financial Assets
Loans held for sale, at fair value	40,523	33,060
Total assets measured at fair value on a recurring basis	4,219,022	4,288,851
Total financial liabilities	377
Level 2 \| U.S. government and federal agency \| Recurring Measurements
Financial Assets
Debt securities, available for sale	472,122	468,433
Level 2 \| U.S. government sponsored enterprises \| Recurring Measurements
Financial Assets
Debt securities, available for sale	313,508	310,154
Level 2 \| State and local governments \| Recurring Measurements
Financial Assets
Debt securities, available for sale	67,917	68,680
Level 2 \| Corporate bonds \| Recurring Measurements
Financial Assets
Debt securities, available for sale	14,652	14,503
Level 2 \| Residential mortgage-backed securities \| Recurring Measurements
Financial Assets
Debt securities, available for sale	2,278,421	2,355,516
Level 2 \| Commercial mortgage-backed securities \| Recurring Measurements
Financial Assets
Debt securities, available for sale	1,025,692	1,027,919
Level 2 \| Interest rate caps \| Recurring Measurements
Financial Assets
Derivative assets		720
Level 2 \| Interest rate locks \| Recurring Measurements
Financial Assets
Derivative assets	1,057	410
Level 2 \| TBA hedge \| Recurring Measurements
Financial Assets
Derivative assets		169
Derivative liabilities	377
Level 2 \| Interest rate swap \| Recurring Measurements
Financial Assets
Derivative assets	5,130	9,287
Level 3 \| Recurring Measurements
Financial Assets
Loans held for sale, at fair value	0	0
Total assets measured at fair value on a recurring basis	0	0
Total financial liabilities	0
Level 3 \| U.S. government and federal agency \| Recurring Measurements
Financial Assets
Debt securities, available for sale	0	0
Level 3 \| U.S. government sponsored enterprises \| Recurring Measurements
Financial Assets
Debt securities, available for sale	0	0
Level 3 \| State and local governments \| Recurring Measurements
Financial Assets
Debt securities, available for sale	0	0
Level 3 \| Corporate bonds \| Recurring Measurements
Financial Assets
Debt securities, available for sale	0	0
Level 3 \| Residential mortgage-backed securities \| Recurring Measurements
Financial Assets
Debt securities, available for sale	0	0
Level 3 \| Commercial mortgage-backed securities \| Recurring Measurements
Financial Assets
Debt securities, available for sale	0	0
Level 3 \| Interest rate caps \| Recurring Measurements
Financial Assets
Derivative assets		0
Level 3 \| Interest rate locks \| Recurring Measurements
Financial Assets
Derivative assets	0	0
Level 3 \| TBA hedge \| Recurring Measurements
Financial Assets
Derivative assets		0
Derivative liabilities	0
Level 3 \| Interest rate swap \| Recurring Measurements
Financial Assets
Derivative assets	$ 0	$ 0

Fair value portion of asset recognized for present right to economic benefit.

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