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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Investment available for sale
Amortized cost	$ 4,836,528	$ 4,897,607
Property and equipment
Accumulated depreciation	65,095	64,340
Credit facility borrowings
Unamortized deferred costs	$ 4,927	$ 5,177
Stockholders’ equity
Common shares, par value (in dollars per share)	$ 0.015	$ 0.015
Common shares, authorized (in shares)	233,333	233,333
Common shares, issued (in shares)	108,140	109,377
Common shares, outstanding (in shares)	108,140	109,377
Fixed maturities
Investment available for sale
Amortized cost	$ 4,319,027	$ 4,584,521
Short-term investments
Investment available for sale
Amortized cost	$ 517,501	$ 313,086

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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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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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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