Investments (Cash, Cash Equivalents and Investments) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Fixed maturity securities, available-for-sale	$ 1,151,353	$ 1,179,619
Fixed maturity securities, percent	86.30%	86.50%
Equity securities, at fair value	$ 10,555	$ 11,590
Equity securities, percent	0.80%	0.80%
Policy loans	$ 75,750	$ 78,773
Policy loans, percent	5.70%	5.80%
Other long-term investments	$ 79,798	$ 69,558
Other long-term investments, percent	5.90%	5.10%
Short-term Investments	$ 0	$ 1,241
Short-term investments, percent	0.00%	0.10%
Cash and cash equivalents	$ 16,785	$ 22,973
Cash and cash equivalents, percent	1.30%	1.70%
Total invested assets	$ 1,334,241	$ 1,363,754
Total invested assets, percent	100.00%	100.00%