Product Warranties (Details) - USD ($)	3 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Sep. 30, 2015	Sep. 30, 2014
Product Warranties [Abstract]
Balance at beginning of period	$ 650,000	$ 837,000	$ 650,000	$ 849,000
Provision for warranties	108,000	128,000
Expenses incurred	$ (108,000)	$ (140,000)