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Investments in Foreign Joint Ventures - Schedule of Activity in Investment in Foreign Joint Ventures (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Investments in foreign joint ventures:        
Balance at December 31, 2014     $ 12,054  
Equity in earnings (loss) in 2015 $ 284 $ 1,110 400 $ 1,584
Dividend distributions in 2015     (1,170)  
Foreign currency translation adjustment     152  
Investments, end of period 11,436   11,436  
Components of investments in foreign joint ventures:        
Investment in joint ventures 2,047      
Undistributed earnings 7,745      
Foreign currency translation 1,644      
Investments, end of period 11,436   11,436  
BOMAY        
Investments in foreign joint ventures:        
Balance at December 31, 2014     11,548  
Equity in earnings (loss) in 2015     456  
Dividend distributions in 2015     (1,033)  
Foreign currency translation adjustment     66  
Investments, end of period 11,037   11,037  
Components of investments in foreign joint ventures:        
Investment in joint ventures 2,033      
Undistributed earnings 7,580      
Foreign currency translation 1,424      
Investments, end of period 11,037   11,548  
MIEFE        
Investments in foreign joint ventures:        
Balance at December 31, 2014     506  
Equity in earnings (loss) in 2015     (56)  
Dividend distributions in 2015     (137)  
Foreign currency translation adjustment     86  
Investments, end of period 399   399  
Components of investments in foreign joint ventures:        
Investment in joint ventures 14      
Undistributed earnings 165      
Foreign currency translation 220      
Investments, end of period $ 399   $ 506