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Warranty Liability (Details) - USD ($)
12 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2013
Payables and Accruals [Abstract]      
Product Warranty Accrual $ 650,000 $ 849,000 $ 411,000
Product Warranty Accrual, Warranties Issued 171,000 207,000  
Product Warranty Accrual, Additions from Business Acquisition 0 488,000  
Product Warranty Accrual, Payments $ (370,000) $ (257,000)