Product Warranties (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2015	Sep. 30, 2014	Mar. 31, 2014	Sep. 30, 2013
Product Warranties [Abstract]
Balance at beginning of period	$ 833,000	$ 363,000	$ 833,000	$ 363,000	$ 836,000	$ 849,000	$ 362,000	$ 411,000
Provision for warranties	117,000	49,000	366,000	113,000
Expenses incurred	$ (120,000)	$ (48,000)	$ (382,000)	$ (161,000)