Investments (Net Investment Income) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net Investment Income
Investment fees and expenses	$ (2,552)	$ (1,503)	$ (4,638)	$ (2,793)
Net investment income	17,417	18,124	32,434	38,954
Fixed maturities
Net Investment Income
Investment Income	18,157	17,676	33,848	35,961
Equity securities
Net Investment Income
Investment Income	448	985	1,142	2,892
Short-term investments, including Other
Net Investment Income
Investment Income	678	509	952	1,981
BOLI
Net Investment Income
Investment Income	$ 686	$ 457	$ 1,130	$ 913

Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein.

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Amount of expenses related to the generation of investment income.

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Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments.

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