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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($)
$ in Thousands
Total
Preferred shares
Common shares (par value)
Additional paid-in capital
Accumulated other comprehensive income (loss)
Unrealized gains (losses) on available for sale investments, net of tax:
Cumulative foreign currency translation adjustments, net of tax:
Retained earnings
Treasury shares, at cost
Balance at beginning of period at Dec. 31, 2021   $ 550,000 $ 2,206 $ 2,346,179 $ 56,536 $ 62,155 $ (5,619) $ 6,204,745 $ (3,749,010)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Treasury shares reissued       (29,378)         30,923
Share-based compensation expense       12,185          
Unrealized gains (losses) arising during the period, net of reclassification adjustment $ (397,611)         (397,611)      
Foreign currency translation adjustment 2,775           2,775    
Net income 149,200             149,200  
Preferred share dividends [1]               (7,563)  
Common share dividends [1]               (37,670)  
Shares repurchased                 (12,977)
Balance at end of period at Mar. 31, 2022 5,120,540 550,000 2,206 2,328,986 (338,300) (335,456) (2,844) 6,308,712 (3,731,064)
Balance at beginning of period at Dec. 31, 2022 4,639,910 550,000 2,206 2,366,253 (760,300) (743,695) (16,605) 6,247,022 (3,765,271)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Treasury shares reissued       (30,593)         32,297
Share-based compensation expense       11,977          
Unrealized gains (losses) arising during the period, net of reclassification adjustment 188,939         188,939      
Foreign currency translation adjustment (535)           (535)    
Net income 180,097             180,097  
Preferred share dividends [1]               (7,563)  
Common share dividends [1]               (38,355)  
Shares repurchased                 (15,945)
Balance at end of period at Mar. 31, 2023 $ 4,960,229 $ 550,000 $ 2,206 $ 2,347,637 $ (571,896) $ (554,756) $ (17,140) $ 6,381,201 $ (3,748,919)
[1] Refer to Note 9 'Shareholders' Equity' for details on dividends declared and paid related to the Company's common and preferred shares.