Condensed Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net revenues	$ 8,546,942	$ 8,012,487	$ 16,849,440	$ 15,288,370
Cost of revenues	1,871,434	1,950,040	3,831,584	3,683,039
Gross profit	6,675,508	6,062,447	13,017,856	11,605,331
Operating expenses
Selling, general and administrative	4,965,053	5,149,613	9,859,858	10,422,598
Research and development	143,477	237,838	242,414	306,028
Total operating expenses	5,108,530	5,387,451	10,102,272	10,728,626
Operating income	1,566,978	674,996	2,915,584	876,705
Interest income, net	37,078	16,521	77,028	29,974
Net income before income taxes	1,604,056	691,517	2,992,612	906,679
Income tax expense	419,000	311,000	793,000	369,000
Net income	$ 1,185,056	$ 380,517	$ 2,199,612	$ 537,679
Income per share:
Basic (in dollars per share)	$ 0.14	$ 0.05	$ 0.26	$ 0.06
Diluted (in dollars per share)	$ 0.14	$ 0.04	$ 0.25	$ 0.06
Weighted-average common shares outstanding:
Basic (in shares)	8,390,125	8,298,961	8,384,807	8,279,493
Diluted (in shares)	8,759,143	8,669,739	8,698,168	8,658,346