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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $)
In Thousands, except Share data
Total
USD ($)
Common Stock [Member]
Additional paid-in capital [Member]
USD ($)
Retained earnings [Member]
USD ($)
Treasury stock [Member]
USD ($)
Treasury stock reserved for deferred compensation [Member]
USD ($)
Accumulated other comprehensive income (loss) [Member]
USD ($)
Parent [Member]
USD ($)
Noncontrolling interest [Member]
USD ($)
Balance, Beginning at Dec. 31, 2012 $ 632,362   $ 507,199 $ 173,407 $ (16,445) $ (1,075) $ (56,469) $ 606,617 $ 25,745
Balance, Beginning (in shares) at Dec. 31, 2012   48,562,204              
Net income 42,245     42,692       42,692 (447)
Currency translation adjustment (25,367)           (22,656) (22,656)  
Pension liability adjustments, net of tax 2,021           2,021 2,021  
Unrealized loss on investments, net of tax (3)           (3) (3)  
Dividends on common stock (535)     (535)       (535)  
Note conversion (45,903)                
Exercise of stock options 841   405   436     841  
Exercise of stock options (in shares)   48,568              
Acquisitions 167             0 167
Stock-based compensation 2,800   2,800         2,800  
Tax benefit related to stock-based compensation (42)   (42)         (42)  
Issuance of treasury stock under 401(k) plan 326   190   136     326  
Issuance of treasury stock under 401(k) plan (in shares)   15,169              
Balance, Ending at Jun. 30, 2013 700,718   556,455 215,564 (15,873) (1,075) (77,107) 677,964 22,754
Balance, Ending (in shares) at Jun. 30, 2013   53,528,985              
Balance, Beginning at Mar. 31, 2013                  
Net income 22,856                
Currency translation adjustment (25,171)                
Pension liability adjustments, net of tax 1,070                
Note conversion (45,903)   (45,903)         (45,903)  
Note conversion (in shares)   4,903,044              
Balance, Ending at Jun. 30, 2013 $ 700,718   $ 556,455     $ (1,075)   $ 677,964  
Balance, Ending (in shares) at Jun. 30, 2013   53,528,985