Schedule II - Valuation and Qualifying Accounts (Details) - USD ($)	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Allowance for Doubtful Accounts [Member]
Balance at Beginning of Year	$ 200,000	$ 300,000	$ 300,000
Charged to Costs and Expenses	$ 44,514
Write offs		$ (103,403)	$ (5,692)
Recoveries	$ 5,486	3,403	5,692
Balance at End of Year	250,000	200,000	300,000
Inventory Valuation Reserve [Member]
Balance at Beginning of Year	2,156,628	1,600,000	1,000,000
Charged to Costs and Expenses	$ 600,000	601,351	$ 600,000
Write offs		(208,056)
Recoveries		163,333
Balance at End of Year	$ 2,756,628	$ 2,156,628	$ 1,600,000