Quarterly Results (unaudited) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 7,890,195	$ 7,177,763	$ 6,030,380	$ 6,171,625	$ 6,396,707	$ 5,426,147	$ 6,039,355	$ 5,250,985	$ 27,269,963	$ 23,113,194	$ 22,204,578
Cost of goods sold	2,374,661	2,112,099	1,818,672	1,912,007	2,062,278	1,859,749	1,957,900	1,760,699	8,217,439	7,640,626	7,280,276
Gross profit	5,515,534	5,065,664	4,211,708	4,259,618	4,334,429	3,566,398	4,081,455	3,490,286	19,052,524	15,472,568	14,924,302
Operating expenses:
Selling expenses	4,036,227	3,587,859	3,271,134	3,325,687	3,665,609	3,319,385	2,991,687	2,656,280	14,220,907	12,632,961	9,062,695
General and administrative expenses	3,091,004	2,484,962	2,087,419	1,931,821	1,834,947	1,515,559	1,675,090	1,803,920	9,595,206	6,829,516	5,983,623
Research and development expenses	439,186	465,863	440,364	492,084	499,139	548,278	392,068	399,994	1,837,497	1,839,479	1,592,923
Total operating expenses	7,566,417	6,538,684	5,798,917	5,749,592	5,999,695	5,383,222	5,058,845	4,860,194	25,653,610	21,301,956	16,639,241
Loss from operations	(2,050,883)	(1,473,020)	(1,587,209)	(1,489,974)	(1,665,266)	(1,816,824)	(977,390)	(1,369,908)	(6,601,086)	(5,829,388)	(1,714,939)
Other income/(expense):
Interest income	19	18	19	19	18	19	25	19	75	81	75
Royalty income and license fees	925,259	953,235	949,048	944,068	979,200	963,025	1,018,362	988,170	3,771,610	3,948,757	4,256,321
Other	(20,635)	(6,940)	(6,640)	(1,996)	(4,980)	(5,464)	(5,413)	(6,021)	(36,211)	(21,878)	(22,033)
Total other income	904,643	946,313	942,427	942,091	974,238	957,580	1,012,974	982,168	3,735,474	3,926,960	4,234,363
(Loss) from continuing operations before income taxes	(1,146,240)	(526,707)	(644,782)	(547,883)	(691,028)	(859,244)	35,584	(387,740)	(2,865,612)	(1,902,428)	2,519,424
Income tax (benefit)	(747,808)	(219,000)	(30,000)	(26,000)	(251,351)	(15,000)	(139,000)	(168,000)	(1,022,808)	(573,351)	(2,784,632)
Net (loss) from continuing operations	(398,432)	(307,707)	(614,782)	(521,883)	(439,677)	(844,244)	174,584	(219,740)	(1,842,804)	(1,329,077)	5,304,056
Discontinued operations:
Net income (loss) from discontinued operations net of income tax expense of $0,$0, $0 and $88,375, respectively	(236)	161,861			(8,069)	165,000			161,625	156,931
Net income from discontinued operations	(236)	161,861			(8,069)	165,000			161,625	156,931	267,115
Net (loss)	$ (398,668)	$ (145,846)	$ (614,782)	$ (521,883)	$ (447,746)	$ (679,244)	$ 174,584	$ (219,740)	$ (1,681,179)	$ (1,172,146)	$ 5,571,171
Net (loss) per share from continuing operations - Basic (in dollars per share)	$ (0.05)	$ (0.04)	$ (0.07)	$ (0.07)	$ (0.06)	$ (0.11)	$ 0.02	$ (0.03)	$ (0.22)	$ (0.17)	$ 0.7
Net income per share from discontinued operations - Basic (in dollars per share)		0.02				0.02			0.02	0.02	0.04
Net (loss) per share - Basic (in dollars per share)	(0.05)	(0.02)	(0.07)	(0.07)	(0.06)	(0.09)	0.02	(0.03)	(0.20)	(0.15)	0.74
Net (loss) per share from continuing operations - Diluted (in dollars per share)	(0.05)	(0.04)	(0.07)	(0.07)	(0.06)	(0.11)	0.02	(0.03)	(0.22)	(0.17)	0.66
Net income per share from discontinued operations - Diluted (in dollars per share)		0.02				0.02			0.02	0.02	0.03
Net (loss) per share - Diluted (in dollars per share)	$ (0.05)	$ (0.02)	$ (0.07)	$ (0.07)	$ (0.06)	$ (0.09)	$ 0.02	$ (0.03)	$ (0.20)	$ (0.15)	$ 0.69