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Summary of Significant Accounting Policies - Additional Information (Details) (USD $)
 3 Months Ended 12 Months Ended
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2012
Significant Accounting Policies Additional (Textual) [Abstract]                      
Minimum credit limit                 30 days    
Extended credit terms for trade receivables                 60 days    
Patent amortization expense                 $ 0 $ 100,000 $ 200,000
Goodwill 1,843,000       1,843,000       1,843,000 1,843,000  
Issuance of restricted stock, Shares                 197,000 0 0
Weighted average grant date fair value per Share                 $ 95.18 $ 0 $ 0
Stock options granted during fiscal years                 0 0 0
Stock-based compensation expense                 4,100,000 500,000 800,000
Shipping and handling costs                 900,000 1,400,000 1,000,000
Significant Accounting Policies (Textual) [Abstract]                      
Revenues 26,285,000 40,728,000 68,551,000 101,348,000 68,288,000 78,148,000 76,420,000 77,751,000 236,912,000 300,607,000 191,664,000
Russian Subsidiary
                      
Significant Accounting Policies (Textual) [Abstract]                      
Net working capital related to this subsidiary 11,400,000               11,400,000    
Revenues                 10,200,000 7,700,000  
Columbia Subsidiary
                      
Significant Accounting Policies (Textual) [Abstract]                      
Net working capital related to this subsidiary 1,800,000               1,800,000    
Revenues                 $ 3,222,000 $ 608,000  
Customer one
                      
Significant Accounting Policies (Textual) [Abstract]                      
Percentage of trade accounts receivables                 22.80% 25.40%  
Percentage of notes receivable                 71.80% 60.00%  
Customer two
                      
Significant Accounting Policies (Textual) [Abstract]                      
Percentage of trade accounts receivables                 15.60%    
Percentage of notes receivable                 27.10% 39.10%  
Customer three
                      
Significant Accounting Policies (Textual) [Abstract]                      
Percentage of trade accounts receivables                 14.20%    
Customer Concentration Risk | Customer one | Sales Revenue, Net
                      
Significant Accounting Policies (Textual) [Abstract]                      
Percentage of company revenue                 26.40% 36.50% 17.70%