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Investments (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) Securities	Dec. 31, 2020 USD ($) Securities	Dec. 31, 2019 USD ($)
Investments [Abstract]
Percentage of fixed maturity portfolio rated investment grade based on NAIC designations	98.00%	97.00%
Number of securities in unrealized loss position | Securities	1,427	843
Percentage of unrealized losses on fixed maturity securities where securities are rated investment grade	85.00%	75.00%
Proceeds from sales of available for sale fixed maturity securities	$ 800,000	$ 5,400,000	$ 1,000,000
Principal repayments, calls and tenders of available for sale fixed maturity securities	3,700,000	2,900,000	2,300,000
Net OTTI losses recognized in operations	0	0	$ (18,726)
Assets on deposit with state agencies to meet regulatory requirements	49,300,000	53,500,000
Fair value, concentration of risk, investments	$ 0	$ 0

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- Definition

Represents the percent of available-for-sale debt securities at fair value, rated investment grade (NAIC 1 or 2).

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Represents the percent of unrealized losses on fixed maturity securities that is on securities classified as investment grade.

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Carrying amount of cash and investment securities on deposit with state regulatory authorities in connection with capital requirements.

+ References

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Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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This item represents disclosure of all significant concentrations of credit risk or market risk arising from the subject financial instrument (as defined), whether from an individual counterparty or groups of counterparties.

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Amount of other-than-temporary impairment (OTTI) on investment in debt security, recognized in earnings.

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Amount of cash inflow from maturity, prepayment and call 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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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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