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Subsequent Event (Details) - Secured Revolving Credit Facility
Oct. 13, 2016
USD ($)
Oct. 01, 2016
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Subsequent Event [Line Items]        
Maximum borrowing capacity     $ 145,000,000 $ 130,000,000
Inventory assets pledged as collateral     $ 1,000,000,000  
Subsequent Event        
Subsequent Event [Line Items]        
Maximum borrowing capacity $ 180,000,000.0 $ 180,000,000    
Inventory assets pledged as collateral $ 800,000,000      
Maximum        
Subsequent Event [Line Items]        
Aggregate Collateral Ratio     5.00  
Maximum | Subsequent Event        
Subsequent Event [Line Items]        
Aggregate Collateral Ratio 4.00      
Minimum        
Subsequent Event [Line Items]        
Aggregate Collateral Ratio     1.00  
Minimum | Subsequent Event        
Subsequent Event [Line Items]        
Aggregate Collateral Ratio 1.00