Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Revenues, net	$ 9,922,171	$ 9,599,912	$ 19,431,143	$ 17,151,842
Cost of sales	6,291,835	5,670,632	11,950,615	10,831,744
Gross margin	3,630,336	3,929,280	7,480,528	6,320,098
Operating expenses:
Selling, general and administrative	2,763,178	2,199,133	5,203,655	4,540,911
New product development	529,902	468,646	980,399	897,057
Amortization of intangibles	281,271	283,279	562,542	566,800
Gain on disposal of property and equipment	(477)	(79,224)	(522)	(129,224)
Total operating expenses	3,573,874	2,871,834	6,746,074	5,875,544
Operating income	56,462	1,057,446	734,454	444,554
Other income (expense):
Interest expense, net	(55,147)	(89,257)	(113,696)	(187,798)
Other income (expense), net	93,252	122,797	5,517	(392,609)
Total other income (expense), net	38,105	33,540	(108,179)	(580,407)
Income (loss) before income taxes	94,567	1,090,986	626,275	(135,853)
Income tax provision	241,112	321,869	675,752	470,187
Net income (loss)	(146,545)	769,117	(49,477)	(606,040)
Foreign currency translation adjustment	723,396	143,056	1,452,704	196,822
Comprehensive income (loss)	$ 576,851	$ 912,173	$ 1,403,227	$ (409,218)
Earnings (loss) per common share (basic)	$ (0.01)	$ 0.03	$ (0.00)	$ (0.02)
Number of shares used in per share calculation (basic)	26,117,239	25,837,903	26,049,750	25,832,337
Earnings (loss) per common share (diluted)	$ (0.01)	$ 0.03	$ (0.00)	$ (0.02)
Number of shares used in per share calculation (diluted)	26,117,239	27,361,273	26,049,750	25,832,337