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Unaudited Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Available for sale securities, amortized cost | $ 20,650,206 | $ 19,708,561
Allowance for credit losses on investments | 34,145 | 2,883
Allowance for credit losses on premiums receivable | 39,073 | 39,958
Allowance for credit losses on reinsurance recoverable | 18,483 | 13,230
Allowance for credit losses on contractholder receivable | $ 3,731 | $ 3,437
Common shares, par value per share | $ 0.0011 | $ 0.0011
Common shares issued (shares) | 586,115,502 | 583,289,850
Common shares held in treasury (shares) | 210,384,611 | 204,365,956
Fixed maturities |  |
Available for sale securities, amortized cost | $ 18,317,693 | $ 17,973,823
Allowance for credit losses on investments | 34,145 | 2,883
Short-term investments |  |
Available for sale securities, amortized cost | 2,332,513 | 1,734,738
Allowance for credit losses on investments | $ 0 | $ 0

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