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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($)
$ in Thousands
Total
Common stock [Member]
Additional paid-in capital [Member]
Retained earnings [Member]
Accumulated other comprehensive loss [Member]
Treasury stock [Member]
Noncontrolling interest [Member]
Balance at Dec. 31, 2015     $ 62,030 $ 388,434 $ (48,091) $ (36,817) $ 110,800
Shares issued upon exercise of stock options     132        
Sale of subsidiary shares to noncontrolling interest     (13)       156
Net income $ 9,448     7,334     2,114
Dividends       (4,656)      
Stock-based compensation     212 0     0
Foreign currency translation adjustment, net of tax 18,892       13,643   5,249
Transfer from other comprehensive income into earnings         0   0
Net derivative instrument gain, net of tax         0   0
Balance at Mar. 31, 2016 500,558 $ 31 62,361 391,112 (34,448)   118,319
Balance at Dec. 31, 2016 483,658   63,103 402,714 (57,982) $ (37,475) 113,267
Shares issued upon exercise of stock options     542        
Sale of subsidiary shares to noncontrolling interest     0       0
Net income 18,167     13,373     4,794
Dividends       (5,299)      
Stock-based compensation     234 169     121
Foreign currency translation adjustment, net of tax 5,769       4,306   1,463
Transfer from other comprehensive income into earnings         17   5
Net derivative instrument gain, net of tax         246   96
Balance at Mar. 31, 2017 $ 503,725 $ 31 $ 63,879 $ 410,957 $ (53,413)   $ 119,746