Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash Flows From Operating Activities
Net income	$ 882,274	$ 877,198
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	527,472	495,797
Amortization of finite-life intangible assets	89,728	85,166
Amortization of debt issuance costs	1,958	5,373
Share-based compensation expense	729,470	604,056
Deferred income taxes	27,000	(21,000)
Loss of disposal of property and equipment	1,710
Changes in operating assets and liabilities:
Accounts receivable	(464,400)	(111,573)
Contract assets	(67,463)	(16,209)
Inventories	(205,524)	363,043
Prepaid expenses and other assets	350,881	(114,391)
Income tax receivable	(239,989)	(91,103)
Income tax payable	(397,390)	(156,524)
Accounts payable and accrued liabilities	(63,774)	(48,059)
Net cash provided by operating activities	1,171,953	1,871,774
Cash Flows From Investing Activities
Expenditures for property and equipment	(197,445)	(379,328)
Expenditures for finite-life intangible assets	(43,309)	(27,818)
Net cash used in investing activities	(240,754)	(407,146)
Cash Flows From Financing Activities
Principal payments on long-term debt including capital lease obligations	(1,103,001)	(37,927)
Issuance of common stock upon exercise of options	251,849	62,412
Net cash provided by (used in) financing activities	(851,152)	24,485
Net increase in cash	80,047	1,489,113
Cash
Beginning of period	7,455,844	5,573,709
End of period	$ 7,535,891	$ 7,062,822