Investments - Amortized Cost and Fair Value of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Amortized Cost
Due in one year or less	$ 30,358
Due after one year through five years	44,282
Due after five years through ten years	25,697
Due after ten years	9,773
Amortized Cost	138,755	$ 143,036
Fair Value
Due in one year or less	30,229
Due after one year through five years	43,258
Due after five years through ten years	23,964
Due after ten years	9,326
Fair Value	134,116	139,176
Residential and commercial mortgage-backed securities
Amortized Cost
Without single maturity date	25,217
Amortized Cost	25,217	25,452
Fair Value
Without single maturity date	24,173
Fair Value	24,173	24,601
Other loan-backed and structured securities
Amortized Cost
Without single maturity date	3,428
Amortized Cost	3,428	3,694
Fair Value
Without single maturity date	3,166
Fair Value	$ 3,166	$ 3,418