Investments - Net Realized and Unrealized Investment Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Net realized and unrealized investment gains and losses
Gains on sales of fixed maturity securities	$ 15	$ 44
Gains on sales of equity securities		66
Total realized gains	15	110
Losses on sales of fixed maturity securities		(66)
Losses on sales of equity securities		(156)
Total realized losses		(222)
Net realized investment gains (losses)	15	(112)
Net unrealized gains on equity securities	425	2,523
Net realized and unrealized gains on investments	440	2,411
Proceeds from sales of fixed maturity securities
Proceeds from the sale of fixed maturity securities	$ 800	$ 9,900

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

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Amount of realized loss 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 (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 realized loss 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 unrealized gain (loss) on 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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