Warranty Liability (Details) - USD ($)	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Payables and Accruals [Abstract]
Product Warranty Accrual	$ 681,000	$ 650,000	$ 849,000
Product Warranty Accrual, Warranties Issued	423,000	171,000
Product Warranty Accrual, Payments	$ (392,000)	$ (370,000)