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Employee Retirement Plan (Details Textual) (USD $)
12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2012
Employee Retirement Plan [Line Items]      
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 3.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent    
Defined Benefit Plan, Contributions by Employer $ 83,000us-gaap_DefinedBenefitPlanContributionsByEmployer $ 64,000us-gaap_DefinedBenefitPlanContributionsByEmployer $ 55,000us-gaap_DefinedBenefitPlanContributionsByEmployer