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Long-Term Debt - Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Debt Instrument [Line Items]
Total	$ 1,631	$ 1,630	$ 4,896	$ 4,969
Non-cash expense	177	175	531	526
Surplus note
Debt Instrument [Line Items]
Total	47	49	146	115
5.625% Senior unsecured notes
Debt Instrument [Line Items]
Total	$ 1,407	$ 1,406	$ 4,219	$ 4,328

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