Fair Value of Assets and Liabilities - Fair Value Measurements on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financial Assets
Debt securities, available-for-sale	$ 4,245,205	$ 4,785,719
Recurring measurements
Financial Assets
Loans held for sale, at fair value	33,060	15,691
Total assets measured at fair value on a recurring basis	4,288,682	4,807,004
Financial Liabilities
Total financial liabilities		18,338
U.S. government and federal agency
Financial Assets
Debt securities, available-for-sale	468,433	455,347
U.S. government and federal agency | Recurring measurements
Financial Assets
Debt securities, available-for-sale	468,433	455,347
U.S. government sponsored enterprises
Financial Assets
Debt securities, available-for-sale	310,154	299,219
U.S. government sponsored enterprises | Recurring measurements
Financial Assets
Debt securities, available-for-sale	310,154	299,219
State and local governments
Financial Assets
Debt securities, available-for-sale	68,680	98,932
State and local governments | Recurring measurements
Financial Assets
Debt securities, available-for-sale	68,680	98,932
Corporate bonds
Financial Assets
Debt securities, available-for-sale	14,503	26,253
Corporate bonds | Recurring measurements
Financial Assets
Debt securities, available-for-sale	14,503	26,253
Residential mortgage-backed securities
Financial Assets
Debt securities, available-for-sale	2,355,516	2,811,263
Residential mortgage-backed securities | Recurring measurements
Financial Assets
Debt securities, available-for-sale	2,355,516	2,811,263
Commercial mortgage-backed securities
Financial Assets
Debt securities, available-for-sale	1,027,919	1,094,705
Commercial mortgage-backed securities | Recurring measurements
Financial Assets
Debt securities, available-for-sale	1,027,919	1,094,705
Interest rate caps | Recurring measurements
Financial Assets
Interest rate	720	4,990
Interest rate locks | Recurring measurements
Financial Assets
Interest rate	410	604
TBA hedge | Recurring measurements
Financial Liabilities
Derivative liabilities		350
Interest rate Swap | Recurring measurements
Financial Assets
Interest rate	9,287
Financial Liabilities
Derivative liabilities		17,988
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
Financial Liabilities
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
Interest rate		0
Level 1 | Interest rate locks | Recurring measurements
Financial Assets
Interest rate	0	0
Level 1 | Interest rate Swap | Recurring measurements
Financial Assets
Interest rate		0
Financial Liabilities
Derivative liabilities		0
Level 2 | Recurring measurements
Financial Assets
Loans held for sale, at fair value	33,060	15,691
Total assets measured at fair value on a recurring basis	4,288,682	4,807,004
Financial Liabilities
Total financial liabilities		18,338
Level 2 | U.S. government and federal agency | Recurring measurements
Financial Assets
Debt securities, available-for-sale	468,433	455,347
Level 2 | U.S. government sponsored enterprises | Recurring measurements
Financial Assets
Debt securities, available-for-sale	310,154	299,219
Level 2 | State and local governments | Recurring measurements
Financial Assets
Debt securities, available-for-sale	68,680	98,932
Level 2 | Corporate bonds | Recurring measurements
Financial Assets
Debt securities, available-for-sale	14,503	26,253
Level 2 | Residential mortgage-backed securities | Recurring measurements
Financial Assets
Debt securities, available-for-sale	2,355,516	2,811,263
Level 2 | Commercial mortgage-backed securities | Recurring measurements
Financial Assets
Debt securities, available-for-sale	1,027,919	1,094,705
Level 2 | Interest rate caps | Recurring measurements
Financial Assets
Interest rate	720	4,990
Level 2 | Interest rate locks | Recurring measurements
Financial Assets
Interest rate	410	604
Level 2 | TBA hedge | Recurring measurements
Financial Liabilities
Derivative liabilities		350
Level 2 | Interest rate Swap | Recurring measurements
Financial Assets
Interest rate	9,287
Financial Liabilities
Derivative liabilities		17,988
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
Financial Liabilities
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
Interest rate		0
Level 3 | Interest rate locks | Recurring measurements
Financial Assets
Interest rate	$ 0	0
Level 3 | Interest rate Swap | Recurring measurements
Financial Assets
Interest rate		$ 0