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Legal Proceedings - Additional Information (Detail)
$ in Thousands
9 Months Ended
May. 13, 2015
USD ($)
Apr. 14, 2014
Plaintiff
Defendant
Aug. 21, 2012
Case
May. 31, 2012
Case
Person
Sep. 30, 2015
Sanchez v. Agro Logistic Systems, Inc et al          
Loss Contingencies [Line Items]          
Number of claimants | Plaintiff   2      
Number of defendants | Defendant   27      
Case dismissal period         90 days
Louisiana | HendlerLaw, P.C. | U.S. State District Court          
Loss Contingencies [Line Items]          
Number of lawsuits filed       7  
Delaware          
Loss Contingencies [Line Items]          
Number of lawsuits filed       9  
Delaware | U.S. State District Court          
Loss Contingencies [Line Items]          
Number of lawsuits filed       8  
Legal proceedings number of personal injuries       6  
Number of claimants | Person       235  
Number of dismissed complaints     6    
Delaware | Superior Court          
Loss Contingencies [Line Items]          
Number of lawsuits filed       1  
USEPA TSCA Matter          
Loss Contingencies [Line Items]          
Settlement amount | $ $ 82