Long-Term Debt - Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Debt Instrument [Line Items]
Total	$ 1,629	$ 1,731	$ 3,265	$ 3,339
Non-cash expense	177	176	354	351
Surplus note
Debt Instrument [Line Items]
Total	46	39	99	66
5.625% Senior unsecured notes
Debt Instrument [Line Items]
Total	$ 1,406	$ 1,516	$ 2,812	$ 2,922