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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common stock [Member]
Additional paid-in capital [Member]
Retained earnings [Member]
Accumulated other comprehensive income (loss) [Member]
Treasury stock [Member]
Noncontrolling interest [Member]
Balance at Dec. 31, 2013   $ 31 $ 57,877 $ 359,459 $ 25,860 $ (36,016) $ 128,145
Net income $ 33,580     26,115     7,465
Foreign currency translation adjustment         (30,324)   (12,296)
Shares issued upon exercise of stock options     1,074     101  
Shares received as proceeds of option exercises           (351)  
Sale of subsidiary shares to noncontrolling interest     (335)       1,365
Dividends       (11,137)     (4,667)
Stock-based compensation     507 79     30
Balance at Sep. 30, 2014 512,982 31 59,123 374,516 (4,464) (36,266) 120,042
Balance at Dec. 31, 2014 498,724 31 60,200 374,121 (15,823) $ (36,464) 116,659
Net income 37,459     28,578     8,881
Foreign currency translation adjustment         (24,092)   (8,939)
Shares issued upon exercise of stock options     451      
Shares received as proceeds of option exercises            
Sale of subsidiary shares to noncontrolling interest     (6)       696
Dividends       $ (12,089)     $ (3,836)
Stock-based compensation     590    
Balance at Sep. 30, 2015 $ 488,958 $ 31 $ 61,235 $ 390,610 $ (39,915) $ (36,464) $ 113,461