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Business Combinations - Consideration Transferred (Details) - USD ($)
$ in Thousands
12 Months Ended
May 03, 2016
Sep. 30, 2016
Sep. 30, 2015
Business Acquisition [Line Items]      
Non-cash equity consideration for acquisition of Danya   $ 2,500 $ 0
Dayna International, LLC      
Business Acquisition [Line Items]      
Payments to Acquire Businesses, Gross $ 36,470    
Non-cash equity consideration for acquisition of Danya 2,500    
Business Combination, Consideration Transferred 38,970    
Dayna International, LLC | Common Stock      
Business Acquisition [Line Items]      
Non-cash equity consideration for acquisition of Danya $ 2,500