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Business Segments (Detail Textuals) - USD ($)
$ in Thousands
Dec. 31, 2017
Jun. 30, 2017
Segment Reporting Information [Line Items]    
Equity method investments $ 3,905  
Animal Health    
Segment Reporting Information [Line Items]    
Equity method investments 3,905 $ 3,719
Performance Products    
Segment Reporting Information [Line Items]    
Equity method investments $ 624 $ 516