Condensed Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Net revenues	$ 11,729,000	$ 10,248,000	$ 22,387,000	$ 20,249,000
Cost of revenues	3,047,000	2,368,000	5,374,000	4,668,000
Gross profit	8,682,000	7,880,000	17,013,000	15,581,000
Operating expenses
Selling, general and administrative	7,254,000	6,475,000	15,243,000	13,262,000
Research and development	154,000	329,000	452,000	705,000
Total operating expenses	7,408,000	6,804,000	15,695,000	13,967,000
Operating income	1,274,000	1,076,000	1,318,000	1,614,000
Interest income, net	7,000	6,000	11,000	15,000
Net income before income taxes	1,281,000	1,082,000	1,329,000	1,629,000
Income tax expense	304,000	244,000	271,000	352,000
Net income	$ 977,000	$ 838,000	$ 1,058,000	$ 1,277,000
Income per share:
Basic	$ 0.12	$ 0.10	$ 0.13	$ 0.15
Diluted	$ 0.11	$ 0.10	$ 0.12	$ 0.15
Weighted-average common shares outstanding:
Basic	8,442,939	8,478,394	8,442,684	8,501,041
Diluted	8,684,352	8,760,946	8,685,184	8,788,194