Product Warranties (Details) (USD $)	3 Months Ended		6 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
Product Warranties [Abstract]
Balance at beginning of period	$ 836,000	$ 362,000	$ 836,000	$ 362,000	$ 837,000	$ 849,000	$ 362,000	$ 411,000
Provision for warranties	121,000	53,000	249,000	64,000
Expenses incurred	$ (122,000)	$ (53,000)	$ (262,000)	$ (113,000)