Investments, Debt Securities, Amortized Cost and Fair Value by Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Available-for-Sale Debt Securities, Amortized Cost [Abstract]
Due in one year or less	$ 33,318
Due after one year through five years	186,057
Due after five years through ten years	99,003
Due after ten years	163,546
Amortized cost	481,924	$ 486,993
Available-for-Sale Debt Securities, Fair Value [Abstract]
Due in one year or less	32,672
Due after one year through five years	174,441
Due after five years through ten years	90,031
Due after ten years	146,271
Fair value	$ 443,415	$ 439,506