Product Warranties (Details) - USD ($)	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2016	Sep. 30, 2015
Product Warranties [Abstract]
Balance at beginning of period	$ 650,000	$ 650,000	$ 650,000	$ 650,000
Provision for warranties	114,000	108,000
Expenses incurred	$ (114,000)	$ (108,000)