Investments - Net Realized and Unrealized Investment Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net realized and unrealized investment gains and losses
Gains on sales of fixed maturity securities	$ 117	$ 66	$ 335	$ 256
Gains on sales of equity securities	188	59	1,416	57
Total realized gains	305	125	1,751	313
Losses on sales of fixed maturity securities			(1)	(44)
Total realized losses			(1)	(44)
Net realized investment gains	305	125	1,750	269
Net unrealized gains (losses) on equity securities	(618)	(101)	(2,502)	974
Net realized and unrealized gains (losses) on investments	$ (313)	$ 24	(752)	1,243
Proceeds from sales of fixed maturity securities
Proceeds from the sale of fixed maturity securities			$ 12,100	$ 29,200

Amount of realized gain on investment in debt and equity securities.

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Amount of unrealized and realized gain (loss) on investment in debt and equity securities.

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Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of realized gain from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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