Investments - Schedule of Realized Gains (Losses) Excluding Impairments (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Available-for-sale debt securities:
Realized gains on disposal	$ 16,377	$ 5,677	$ 3,798
Realized losses on disposal	(5)	0	(1,011)
Held-to-maturity debt securities:
Realized gains on redemption	0	12,734	4,390
Realized losses on redemption	0	(1)	0
Real estate	(1,421)	2,661	6,911
Mortgage loans	0	0	0
Other net investment gains	(1)	0	0
Other net investment gains (losses)	$ 14,950	$ 21,071	$ 14,088

Gain (Loss) On Sale Of Investments, Other

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Held to Maturity, Realized Gain on Redemption

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Held to Maturity, Realized Losses on Redemption

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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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The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

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Amount of gain (loss) included in earnings for investments classified as other.

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The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes.

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