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Unaudited Quarterly Financial Data (Narrative) (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2017
Mar. 31, 2017
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Effect of Fourth Quarter Events [Line Items]                
Environmental remediation charge           $ 903 $ 1,313 $ 1,618
Contingent consideration             (1,074) $ (3,468)
Immaterial Correction Of Error $ 3,139              
Pack Pharmaceuticals Llc                
Effect of Fourth Quarter Events [Line Items]                
Contingent consideration         $ (833)   (833)  
Arsynco, Inc                
Effect of Fourth Quarter Events [Line Items]                
Environmental remediation charge   $ 733 $ 170 $ 1,313        
France                
Effect of Fourth Quarter Events [Line Items]                
Contingent consideration             $ (241)