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Consolidated Statements of Changes in Equity - USD ($)
$ in Thousands
Total
Common Stock
Retained Earnings
Treasury Stock
Accumulated Other Comprehensive Income (Loss), net of tax
Redeemable Noncontrolling Interest in Subsidiaries/ Temporary Equity
Balance, beginning of period at Dec. 31, 2019 $ 1,041,280 $ 392,210 $ 930,351 $ (281,032) $ (249)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net Income (Loss) 64,178   64,178      
Other Comprehensive Income (Loss), net of tax (24,859)       (24,859)  
Stock Award Activity 7,467 7,467 (16,146) 16,146    
Dividends Declared (27,304)   (27,304)      
Change in Estimated Redemption Value of Redeemable Noncontrolling Interests (1,870)   (1,870)      
Purchase of Treasury Stock (15,959)     (15,959)    
Balance, end of period at Mar. 31, 2020 1,042,933 399,677 949,209 (280,845) (25,108)  
Temporary equity, beginning balance at Dec. 31, 2019 212,086         $ 212,086
Increase (Decrease) in Temporary Equity [Roll Forward]            
Net Income (Loss) (913)         (913)
Other Comprehensive Income (Loss), net of tax (11,454)         (11,454)
Subscriptions—Redeemable Noncontrolling Interest Holders 5,577         5,577
Consolidation (Deconsolidation) (4,019)         (4,019)
Stock Award Activity 2,153         2,153
Distributions to Noncontrolling Interest in Subsidiaries (6,039)         (6,039)
Change in Estimated Redemption Value of Redeemable Noncontrolling Interests 1,870         1,870
Temporary equity, ending balance at Mar. 31, 2020 199,261         199,261
Balance, beginning of period at Dec. 31, 2020 1,136,997 418,858 1,027,699 (324,731) 15,171  
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net Income (Loss) 74,484   74,484      
Other Comprehensive Income (Loss), net of tax 3,558       3,558  
Stock Award Activity 9,231 9,216 (15,234) 15,249    
Dividends Declared (26,788)   (26,788)      
Change in Estimated Redemption Value of Redeemable Noncontrolling Interests 2,670   2,670      
Purchase of Treasury Stock (45,030)     (45,030)    
Balance, end of period at Mar. 31, 2021 1,155,122 $ 428,074 $ 1,062,831 $ (354,512) $ 18,729  
Temporary equity, beginning balance at Dec. 31, 2020 236,987         236,987
Increase (Decrease) in Temporary Equity [Roll Forward]            
Net Income (Loss) (138)         (138)
Other Comprehensive Income (Loss), net of tax 1,430         1,430
Subscriptions—Redeemable Noncontrolling Interest Holders 25,762         25,762
Consolidation (Deconsolidation) (16,237)         (16,237)
Stock Award Activity 2,481         2,481
Distributions to Noncontrolling Interest in Subsidiaries (1,898)         (1,898)
Change in Estimated Redemption Value of Redeemable Noncontrolling Interests (2,670)         (2,670)
Temporary equity, ending balance at Mar. 31, 2021 $ 245,717         $ 245,717