Securities - Contractual Maturities of Debt Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Amortized Cost
Due in one year or less	$ 20,080
Due after one year through five years	30,270
Due after five years through ten years	9,898
Due after ten years	0
Available-for-Sale Debt Securities With Fixed Maturities	60,248
Amortized Cost	1,056,242	$ 1,021,162
Fair Value
Due in one year or less	20,031
Due after one year through five years	29,337
Due after five years through ten years	9,842
Due after ten years	0
Available-for-Sale Debt Securities With Fixed Maturities	59,210
Total Available-for-Sale Debt Securities, Fair Value	1,010,459	986,277
Collateralized mortgage obligations of U.S. government corporations and agencies
Amortized Cost
Available-for-Sale Debt Securities With Fixed Maturities	677,097
Amortized Cost	677,097	650,314
Fair Value
Available-for-Sale Debt Securities With Fixed Maturities	641,891
Total Available-for-Sale Debt Securities, Fair Value	641,891	624,263
Residential mortgage-backed securities of U.S. government corporations and agencies
Amortized Cost
Available-for-Sale Debt Securities With Fixed Maturities	36,669
Amortized Cost	36,669	35,994
Fair Value
Available-for-Sale Debt Securities With Fixed Maturities	31,916
Total Available-for-Sale Debt Securities, Fair Value	31,916	31,336
Commercial mortgage-backed securities of U.S. government corporations
Amortized Cost
Available-for-Sale Debt Securities With Fixed Maturities	282,228
Amortized Cost	282,228	243,571
Fair Value
Available-for-Sale Debt Securities With Fixed Maturities	277,442
Total Available-for-Sale Debt Securities, Fair Value	$ 277,442	$ 241,262