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Summary of Significant Accounting Policies (Details 7)
12 Months Ended
Sep. 30, 2015
plan
shares
Stock Option Plan Adopted in August 2004  
Stock-Based Compensation  
Number of shares of common stock reserved for issuance 1,000,000
Stock Option Plan Adopted in January 2007  
Stock-Based Compensation  
Number of shares of common stock reserved for issuance 500,000
Restricted Stock  
Stock-Based Compensation  
Number of shares of common stock reserved for issuance 400,000
Employee and Directors Stock Options  
Stock-Based Compensation  
Number of shares of common stock reserved for issuance 1,500,000
Number of plans | plan 2
Period during which options are exercisable 10 years
Vesting of awards per year (as a percent) 33.33%
Award vesting period 3 years