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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($)
$ in Thousands
Total
Preferred shares
Common shares
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, 2020   $ 550,000 $ 2,206 $ 2,330,054 $ 414,395 $ 420,635 $ (6,240) $ 5,763,607 $ (3,764,568)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Treasury shares reissued       (23,129)         24,274
Share-based compensation expense       9,222          
Unrealized gains (losses) arising during the period, net of reclassification adjustment $ (200,783)         (200,783)      
Foreign currency translation adjustment 1,249           1,249    
Net income 123,300             123,300  
Preferred share dividends [1]               (7,563)  
Common share dividends [1]               (36,494)  
Shares repurchased                 (9,380)
Balance at end of period at Mar. 31, 2021 5,176,390 550,000 2,206 2,316,147 214,861 219,852 (4,991) 5,842,850 (3,749,674)
Balance at beginning of period at Dec. 31, 2021 5,410,656 550,000 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)
[1] Refer to Note 9 'Shareholders' Equity' for details on dividends declared and paid related to the Company's common and preferred shares.