Condensed Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash Flows From Operating Activities
Net income	$ 535,262	$ 1,014,556
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	131,818	150,938
Amortization of finite-life intangible assets	31,609	29,963
Share-based compensation expense	191,103	209,954
Deferred income taxes Changes in operating assets and liabilities:	55,000	3,000
Loss on disposal of property and equipment Changes in operating assets and liabilities:	92	975
Changes in operating assets and liabilities:
Accounts receivable	(683,828)	41,299
Contract assets	103,498	(11,966)
Inventories	26,934	(118,519)
Prepaid expenses and other assets	(114,385)	(102,147)
Income tax receivable	43,930	(50,489)
Income tax payable		(288,511)
Accounts payable and accrued liabilities	500,917	(250,011)
Net cash provided by operating activities	821,950	629,042
Cash Flows From Investing Activities
Expenditures for property and equipment	(15,771)	(404,773)
Expenditures for finite-life intangible assets	(65,735)	(10,707)
Net cash used in investing activities	(81,506)	(415,480)
Cash Flows From Financing Activities
Issuance of common stock upon exercise of options		13,040
Taxes paid on stock options exercised, net	(76,413)
Net cash provided by (used in) financing activities	(76,413)	13,040
Net increase in cash	664,031	226,602
Cash
Beginning of period	10,479,150	7,807,928
End of period	$ 11,143,181	$ 8,034,530