Condensed Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash Flows From Operating Activities
Net income	$ 1,922,000	$ 1,962,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	368,000	359,000
Amortization of finite-life intangible assets	105,000	99,000
Share-based compensation expense	703,000	756,000
Deferred income taxes	15,000	102,000
Changes in operating assets and liabilities:
Accounts receivable	(2,582,000)	(3,296,000)
Contract assets	98,000	345,000
Inventories	9,000	839,000
Prepaid expenses and other current assets	(519,000)	(69,000)
Income tax receivable	(443,000)	8,000
Accounts payable and accrued liabilities	550,000	350,000
Accrued compensation	(173,000)	869,000
Net cash provided by operating activities	53,000	2,324,000
Cash Flows From Investing Activities
Investment in property and equipment	(980,000)	(105,000)
Investment in finite-life intangible assets	(86,000)	(103,000)
Net cash used in investing activities	(1,066,000)	(208,000)
Cash Flows From Financing Activities
Issuance of common stock upon exercise of options		46,000
Taxes paid on stock options exercised on a net basis	(70,000)	(141,000)
Repurchase of common stock	(962,000)
Net cash used in financing activities	(1,032,000)	(95,000)
Net (decrease) increase in cash	(2,045,000)	2,021,000
Cash And Cash Equivalents
Beginning of period	11,889,000	10,479,000
End of period	$ 9,844,000	$ 12,500,000