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Consolidated Statements of Changes in Shareholders' Equity - USD ($)
$ in Thousands
Total
Additional Paid-in Capital
Accumulated Other Comprehensive Income (Loss), Net of Deferred Income Tax
Retained Earnings
Treasury Stock Common
Class A Common Shares
Common Stock
Class A Common Shares
Treasury Stock Common
Series A Cumulative Fixed Rate Preferred Shares
Preferred Stock
Class B Common Shares
Common Stock
Number at Dec. 31, 2021           10,574,589 17,496 4,000 3,947,206
Class A common shares purchased             15,954    
Common shares issued under share incentive plans, net of forfeitures           50,598      
Common shares issued to directors           76,686      
Number at Sep. 30, 2022           10,701,873 33,450 4,000 3,947,206
Balance at Dec. 31, 2021   $ 447,406 $ 6,404 $ 249,301 $ (490)     $ 4,000  
Class A common shares purchased, at cost             $ (414)    
Other comprehensive income (loss):                  
Change in unrealized holding gains (losses)     (51,497)            
Unrealized foreign currency translation losses $ (244)   (244)            
Other comprehensive income (loss), net of tax (51,741)   (51,741)            
Net income (loss) (3,189)     (3,189)          
Preferred share distributions (330)     (330)          
Dividends/ Distribution to shareholders       (11,089)          
Share compensation plans   3,736              
Balance at Sep. 30, 2022 643,594 451,142 (45,337) 234,693 (904)     $ 4,000  
Number at Jun. 30, 2022           10,675,757 33,450 4,000 3,947,206
Class A common shares purchased             0    
Common shares issued under share incentive plans, net of forfeitures           0      
Common shares issued to directors           26,116      
Number at Sep. 30, 2022           10,701,873 33,450 4,000 3,947,206
Balance at Jun. 30, 2022 643,594 450,052 (26,625) 214,757 (904)     $ 4,000  
Class A common shares purchased, at cost             $ 0    
Other comprehensive income (loss):                  
Change in unrealized holding gains (losses)     (18,583)            
Unrealized foreign currency translation losses (129)   (129)            
Other comprehensive income (loss), net of tax (18,712)   (18,712)            
Net income (loss) 23,746     23,746          
Preferred share distributions (110)     (110)          
Dividends/ Distribution to shareholders       (3,700)          
Share compensation plans   1,090              
Balance at Sep. 30, 2022 643,594 451,142 (45,337) 234,693 (904)     $ 4,000  
Number at Dec. 31, 2022           10,876,041 802,381 4,000 3,793,612
Class A common shares purchased             468,860    
Common shares issued under share incentive plans, net of forfeitures           75,541      
Common shares issued to directors           68,592      
Number at Sep. 30, 2023           11,020,174 1,271,241 4,000 3,793,612
Balance at Dec. 31, 2022 626,229 451,305 (43,058) 233,468 (19,486)     $ 4,000  
Class A common shares purchased, at cost             $ (12,677)    
Other comprehensive income (loss):                  
Change in unrealized holding gains (losses)     5,243            
Unrealized foreign currency translation losses (302)   (302)            
Other comprehensive income (loss), net of tax 4,941   4,941            
Net income (loss) 19,531     19,531          
Preferred share distributions (330)     (330)          
Dividends/ Distribution to shareholders       (10,150)          
Share compensation plans   3,111              
Balance at Sep. 30, 2023 630,655 454,416 (38,117) 242,519 (32,163)     $ 4,000  
Number at Jun. 30, 2023           11,000,287 1,271,241 4,000 3,793,612
Class A common shares purchased             0    
Common shares issued under share incentive plans, net of forfeitures           0      
Common shares issued to directors           19,887      
Number at Sep. 30, 2023           11,020,174 1,271,241 4,000 3,793,612
Balance at Jun. 30, 2023   453,427 (37,171) 238,315 (32,163)     $ 4,000  
Class A common shares purchased, at cost             $ 0    
Other comprehensive income (loss):                  
Change in unrealized holding gains (losses)     (803)            
Unrealized foreign currency translation losses (143)   (143)            
Other comprehensive income (loss), net of tax (946)   (946)            
Net income (loss) 7,700     7,700          
Preferred share distributions (110)     (110)          
Dividends/ Distribution to shareholders       (3,386)          
Share compensation plans   989              
Balance at Sep. 30, 2023 $ 630,655 $ 454,416 $ (38,117) $ 242,519 $ (32,163)     $ 4,000