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Consolidated Statements of Changes in Equity (USD $)
In Thousands, unless otherwise specified
Total
Common Stock
Contingent Convertible Preferred Stock
Restricted Stock Units
Additional Paid-in Capital
Exchangeable Shares of Subsidiary
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
Treasury Stock
Parent
Noncontrolling Interests
Beginning Balance at Dec. 31, 2011   $ 358 $ 46,950 $ 99,916 $ 412,283 $ 6,578 $ 173,374 $ 3,128 $ (396,386)   $ 1,353
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Stock issued   7 0   51,306            
Restricted stock units recognized       54,178              
Restricted stock units delivered       (46,841)              
Tax benefit from the delivery of restricted stock units         (4,947)            
Exchangeable shares of subsidiary delivered           (4,620)          
Dividends             (57,129)        
Tax benefit from payment of restricted stock unit dividends             1,581        
Net income allocated to common stockholders             42,092        
Currency translation adjustment, net of tax               3,496      
Repurchased                 (83,165)    
Net income (loss) allocated to noncontrolling interests                     0
Distributions to noncontrolling interests                     0
Ending Balance at Dec. 31, 2012 303,512 365 46,950 107,253 458,642 1,958 159,918 6,624 (479,551) 302,159 1,353
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Stock issued   13 (32,504)   75,716            
Restricted stock units recognized       42,916              
Restricted stock units delivered       (43,604)              
Tax benefit from the delivery of restricted stock units         (1,855)            
Exchangeable shares of subsidiary delivered           0          
Dividends             (42,175)        
Tax benefit from payment of restricted stock unit dividends             1,586        
Net income allocated to common stockholders 30,902           30,902        
Currency translation adjustment, net of tax (11,413)             (11,413)      
Repurchased                 (54,796)    
Net income (loss) allocated to noncontrolling interests 0                   0
Distributions to noncontrolling interests                     (311)
Ending Balance at Sep. 30, 2013 $ 267,987 $ 378 $ 14,446 $ 106,565 $ 532,503 $ 1,958 $ 150,231 $ (4,789) $ (534,347) $ 266,945 $ 1,042