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Investments - Summarized Fair Value and Gross Unrealized Losses on Securities Available for Sale (Details) $ in Thousands	Dec. 31, 2020 USD ($) security	Dec. 31, 2019 USD ($) security
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Number of issues | security	79	68
Less than 12 months, Fair value	$ 173,670	$ 79,297
Less than 12 months, Unrealized losses	$ (844)	$ (468)
12 months or longer, Number of issues | security	0	42
12 months or longer, Fair value	$ 0	$ 65,802
12 months or longer, Unrealized losses	$ 0	$ (557)
U.S. government obligations and agencies [Member] | Fixed Maturities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Number of issues | security	8	2
Less than 12 months, Fair value	$ 31,729	$ 3,836
Less than 12 months, Unrealized losses	$ (55)	$ (108)
12 months or longer, Number of issues | security	0	4
12 months or longer, Fair value	$ 0	$ 23,186
12 months or longer, Unrealized losses	$ 0	$ (80)
Corporate bonds [Member] | Fixed Maturities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Number of issues | security	27	18
Less than 12 months, Fair value	$ 28,791	$ 16,808
Less than 12 months, Unrealized losses	$ (162)	$ (107)
12 months or longer, Number of issues | security	0	7
12 months or longer, Fair value	$ 0	$ 5,866
12 months or longer, Unrealized losses	$ 0	$ (34)
Mortgage-backed and asset-backed securities [Member] | Fixed Maturities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Number of issues | security	42	42
Less than 12 months, Fair value	$ 112,462	$ 58,023
Less than 12 months, Unrealized losses	$ (615)	$ (245)
12 months or longer, Number of issues | security	0	26
12 months or longer, Fair value	$ 0	$ 34,985
12 months or longer, Unrealized losses	$ 0	$ (361)
Municipal bonds [Member] | Fixed Maturities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Number of issues | security	0	0
Less than 12 months, Fair value	$ 0	$ 0
Less than 12 months, Unrealized losses	$ 0	$ 0
12 months or longer, Number of issues | security	0	1
12 months or longer, Fair value	$ 0	$ 276
12 months or longer, Unrealized losses	$ 0	$ (4)
Redeemable preferred stock [Member] | Fixed Maturities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Number of issues | security	2	6
Less than 12 months, Fair value	$ 688	$ 630
Less than 12 months, Unrealized losses	$ (12)	$ (8)
12 months or longer, Number of issues | security	0	4
12 months or longer, Fair value	$ 0	$ 1,489
12 months or longer, Unrealized losses	$ 0	$ (78)

X

- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

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+ References

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