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Interim Financial Reporting (Policies)	9 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Use of estimates	Use of estimates. Management uses estimates and assumptions in preparing the unaudited Condensed Financial Statements in accordance with U.S. GAAP. Those estimates and assumptions affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities, and the reported revenues and expenses. Actual results could vary from the estimates that were used. The Company believes the critical accounting policies that require the most significant assumptions and judgments in the preparation of its unaudited Condensed Financial Statements include revenue recognition and the related estimation of variable consideration, allowance for doubtful accounts, inventory obsolescence, share-based compensation and its warranty liability.
Net income per common share	Net income per common share. Net income is presented on a per share basis for both basic and diluted common shares. Basic net income per common share is computed using the weighted average number of common shares outstanding during the period, excluding any restricted stock awards which have not vested. The diluted net income per common share calculation includes outstanding restricted stock grants and assumes that all stock options were exercised and converted into common stock at the beginning of the period, unless their effect would be anti-dilutive. Common stock equivalents excluded from the calculation of diluted earnings per share because their impact was anti-dilutive was 52,017 and zero for the three months ended March 31, 2021 and 2020, respectively, and were 52,017 and 134,100 for the nine months ended March 31, 2021 and 2020, respectively.

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Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements.

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Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.

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