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Condensed Consolidated Statements Of Equity - USD ($)
$ in Thousands
Total
Common Stock [Member]
Capital Surplus [Member]
Accumulated Other Comprehensive (Loss) Income [Member]
 [1]
Retained Earnings [Member]
Treasury Stock [Member]
Noncontrolling Interests [Member]
Balance at Dec. 31, 2014 $ 1,429,387 $ 636 $ 227,885 $ (83,197) $ 1,280,991 $ (10,302) $ 13,374
Net income including noncontrolling interests 79,546       79,698   (152)
Other comprehensive income 904     904      
Common stock issued under share-based compensation plans [2] 2,340 3 2,337        
Tax withholding for common stock issued under share-based compensation plans (3,790)   (3,790)        
Common stock issued under employee stock purchase plan 2,051   2,051        
Common stock dividends (10,054)       (10,165)    
Common stock dividends, accrued dividend shares     111        
Repurchase of common stock (21,148) (5) (21,143)        
Distributions to noncontrolling interests (9,750)           (9,750)
Share-based compensation expense 4,801   4,801        
Balance at Jun. 30, 2015 1,474,287 634 212,252 (82,293) 1,350,524 (10,302) 3,472
Balance at Dec. 31, 2015 1,480,056 617 130,369 (76,953) 1,432,980 (10,302) 3,345
Net income including noncontrolling interests 89,709       89,728   (19)
Other comprehensive income 152     152      
Common stock issued under share-based compensation plans [3] 1,135 3 141   991    
Tax withholding for common stock issued under share-based compensation plans (4,111)   (4,111)        
Common stock issued under employee stock purchase plan 2,383   2,383        
Common stock dividends (9,734)       (9,836)    
Common stock dividends, accrued dividend shares     102        
Repurchase of common stock (26,076) (6) (26,070)        
Distributions to noncontrolling interests (2,050)           (2,050)
Share-based compensation expense 5,035   5,035        
Balance at Jun. 30, 2016 $ 1,536,499 $ 614 $ 107,849 $ (76,801) $ 1,513,863 $ (10,302) $ 1,276
[1] Represents cumulative foreign currency translation adjustments and post retirement liability adjustments.
[2] Includes the tax benefit associated with share-based compensation of $1.0 million for the six months ended June 30, 2015.
[3] Includes a $1.0 million adjustment to retained earnings to recognize net operating loss carryforwards attributable to excess tax benefits on stock compensation upon the adoption of Accounting Standards Update No. 2016-09.