Securities - Schedule of Amortized Cost and Fair Value of Securities Available for Sale and Held to Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Available for sale
Amortized cost within one year	$ 0	$ 0
Amortized cost one to five years	19,160	0
Amortized cost for five to ten years	140,316	173,533
Amortized cost for after ten years	103,606	90,505
Amortized cost, available for sale	263,082	264,038
Amortized Cost	280,049	282,022
Fair value within one year	0	0
Fair value for one to five years	15,351	0
Fair value for five to ten years	115,922	141,915
Fair value for after ten years	86,631	77,219
Fair value, available for sale	217,904	219,134
Total available for sale investment securities, amortized cost, fair value	231,999	233,677
Held to maturity
Within one year, amortized cost	60,730	59,129
One to five years, amortized cost	278,260	298,362
Five to ten years, amortized cost	310,414	366,493
After ten years, amortized cost	806,676	764,860
Amortized cost, held to maturity	1,456,080	1,488,844
Amortized Cost	1,819,229	1,867,848
Within one year, fair value	60,331	58,304
One to five years, fair value	264,608	278,007
five to ten years, fair value	269,468	312,748
After ten years, fair value	626,277	597,067
Fair value, held to maturity	1,220,684	1,246,126
Fair value, held to maturity	1,536,980	1,566,268
U.S. government agency mortgage-backed securities
Available for sale
Amortized cost, available for sale, mortgage obligations	16,967	17,984
Amortized Cost	16,967	17,984
Fair value, available for sale, without single maturity	14,095	14,543
Total available for sale investment securities, amortized cost, fair value	14,095	14,543
Held to maturity
Without a single maturity date, amortized cost	335,333	349,726
Amortized Cost	335,333	349,726
Without a single maturity date, fair value	291,852	294,822
Fair value, held to maturity	291,852	294,822
Private labeled mortgage-backed pools
Held to maturity
Without a single maturity date, amortized cost	27,816	29,278
Amortized Cost	27,816	29,278
Without a single maturity date, fair value	24,444	25,320
Fair value, held to maturity	$ 24,444	$ 25,320