Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Fixed-maturities available for sale, amortized cost	$ 5,587,261	$ 5,367,729
Trading securities, amortized cost	122,472	234,382
Equity securities, amortized cost	162,899	176,229
Reinvested cash collateral held under securities lending agreements	99,735	48,652
Reinsurance recoverables, paid losses	$ 18	$ 51
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	485,000	485,000
Common stock, shares, issued (in shares)	176,509	194,408
Common stock, shares, outstanding (in shares)	157,056	175,421
Treasury stock (in shares)	19,453	18,987

Reinsurance Recoverables, Paid Losses

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The value of the cash collateral that an entity received in a financing transaction in exchange for securities lent that has been reinvested. This amount is included in investments on the balance sheet.

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Amortized cost 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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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

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Amortized cost of investments in debt securities classified as trading.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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