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Consolidated Statements of Equity - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total Stockholders' Equity [Member]
Noncontrolling Interests [Member]
Beginning balance at Dec. 31, 2015 $ 1,686,463 $ 1,618 $ 911,197 $ 751,868 $ 1,664,683 $ 21,780
Beginning balance (shares) at Dec. 31, 2015   161,813,750        
Net income 196,133     195,171 195,171 962
Shares issued under share-based awards 587 $ 4 583   587  
Shares issued under share-based awards (shares)   373,332        
Excess tax deficit of share-based awards, net (165)   (165)   (165)  
Minimum tax withholding paid on behalf of employees for restricted stock units (1,359)   (1,359)   (1,359)  
Stock-based compensation expense 12,612   12,612   12,612  
Share repurchases (42,082) $ (36) (42,046)   (42,082)  
Share repurchases (shares)   (3,560,853)        
Distributions to noncontrolling interests, net (3,363)         (3,363)
Net effect of consolidations, de-consolidations and other transactions (316)         (316)
Ending balance at Dec. 31, 2016 1,848,510 $ 1,586 880,822 947,039 1,829,447 19,063
Ending balance (shares) at Dec. 31, 2016   158,626,229        
Net income 187,551     187,191 187,191 360
Shares issued under share-based awards 12,291 $ 16 12,275   12,291  
Shares issued under share-based awards (shares)   1,531,475        
Minimum tax withholding paid on behalf of employees for restricted stock units (2,896)   (2,896)   (2,896)  
Stock-based compensation expense 15,906   15,906   15,906  
Share repurchases (112,217) $ (90) (112,127)   (112,217)  
Share repurchases (shares)   (8,994,705)        
Distributions to noncontrolling interests, net (1,333)         (1,333)
Net effect of consolidations, de-consolidations and other transactions (17,485)         (17,485)
Ending balance at Dec. 31, 2017 $ 1,930,327 $ 1,512 793,980 1,134,230 1,929,722 605
Ending balance (shares) at Dec. 31, 2017 151,162,999 151,162,999        
Net income $ 271,513     269,911 269,911 1,602
Shares issued under share-based awards 1,943 $ 9 1,934   1,943  
Shares issued under share-based awards (shares)   891,323        
Minimum tax withholding paid on behalf of employees for restricted stock units (6,049)   (6,049)   (6,049)  
Stock-based compensation expense 14,814   14,814   14,814  
Share repurchases (146,063) $ (104) (145,959)   (146,063)  
Share repurchases (shares)   (10,392,609)        
Distributions to noncontrolling interests, net (2,194)         (2,194)
Ending balance at Dec. 31, 2018 $ 2,056,937 $ 1,417 $ 658,720 $ 1,396,787 $ 2,056,924 $ 13
Ending balance (shares) at Dec. 31, 2018 141,661,713 141,661,713