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Quarterly Financial Data (unaudited) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Net sales	$ 3,645,521	$ 3,389,663	$ 3,727,204	$ 3,087,984	$ 4,225,484	$ 4,541,421	$ 4,653,902	$ 3,365,866	$ 13,850,372	$ 16,786,674	$ 27,969,703
Cost of sales	1,829,328	1,806,980	2,082,347	1,593,268	2,373,726	2,164,140	2,302,431	1,828,052	7,311,923	8,668,348	11,482,323
Gross profit	1,816,193	1,582,683	1,644,857	1,494,716	1,851,758	2,377,281	2,351,471	1,537,814	6,538,449	8,118,326	16,487,380
Operating (loss) income	(444,240)	(1,072,228)	(1,143,511)	(1,051,560)	(926,999)	(541,189)	2,985,918	(1,595,295)	(3,711,539)	(77,565)	2,443,187
Net (loss) income	$ (414,378)	$ (1,041,037)	$ (1,316,871)	$ (881,619)	$ (186,045)	$ 19,220	$ 5,930,425	$ (1,194,974)	$ (3,653,905)	$ 4,568,627	$ 1,986,801
Net income (loss) per common share
Basic (in dollars per share)	$ (0.03)	$ (0.06)	$ (0.08)	$ (0.05)	$ (0.01)		$ 0.35	$ (0.07)	$ (0.22)	$ 0.27	$ 0.12
Diluted (in dollars per share)	$ (0.03)	$ (0.06)	$ (0.08)	$ (0.05)	$ (0.01)		$ 0.35	$ (0.07)	$ (0.22)	$ 0.27	$ 0.12
Other income | Delta
Net income (loss) per common share
Reminder of amount paid									$ 4,100,000	$ 4,100,000

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