Liquidity — The Company earned net income attributable to common shareholders of $1,544 during the year ended June 30, 2023 (“Fiscal 2023”) and net income attributable to common shareholders of $2,395 during the year ended June 30, 2022 (“Fiscal 2022”), respectively.

The Company’s core businesses, testing services, manufacturing and distribution, operate in a volatile industry, where average selling prices and product costs are influenced by competitive factors. These factors create pressures on sales, costs, earnings and cash flows, which can impact liquidity.

Use of Estimates, Policy [Policy Text Block]

Use of Estimates — The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expense during the reporting period. Among the more significant estimates included in these consolidated financial statements are the estimated allowance for doubtful account receivables, reserve for obsolete inventory, reserve for warranty, impairments and the deferred income tax asset allowance. Actual results could materially differ from those estimates.

Sales Tax [Policy Text Block]

GST / Indirect Taxes — The Company’s policy is to present taxes collected from customers and remitted to governmental authorities on a net basis. The Company records the amounts collected as a current liability and relieves such liability upon remittance to the taxing authority without impacting revenue or expense.

Extended Product Warranty, Policy [Policy Text Block]

Assurance Warranty Costs — The Company provides for the estimated costs that may be incurred under its warranty program at the time the sale is recorded in its Manufacturing segment. The Company estimates warranty costs based on the historical rates of warranty returns. The Company periodically assesses the adequacy of its recorded warranty liability and adjusts the amounts as necessary.

Term Deposits [Policy Text Block]

Term Deposits — Term deposits consist of bank balances and interest-bearing deposits with maturities less than three months..

Property, Plant and Equipment, Policy [Policy Text Block]

Property, Plant and Equipment and Investment Properties — Property, plant and equipment and investment properties are stated at cost, less accumulated depreciation and amortization. Depreciation is provided for over the estimated useful lives of the assets using the straight-line method. Amortization of leasehold improvements is provided for over the lease terms or the estimated useful lives of the assets, whichever is shorter, using the straight-line method.

Maintenance, repairs and minor renewals are charged directly to expense as incurred. Additions and improvements to the assets are capitalized. When assets are disposed of, the related cost and accumulated depreciation thereon are removed from the accounts and any resulting gain or loss is included in the consolidated statements of operations and comprehensive income or loss.

Lessee, Leases [Policy Text Block]

Leases – The Company applies the guidance in ASC Topic 842 to its individual leases of assets. When the Company receives substantially all the economic benefits from and directs the use of specified property, plant and equipment, the transactions give rise to leases. The Company’s classes of assets include real estate leases. The Company determine if an arrangement is a lease, or contains a lease, at the inception of the arrangement and evaluate whether the lease is an operating lease or a finance lease at the commencement date.

When discount rates implicit in leases cannot be readily determined, the Company uses the applicable incremental borrowing rate at lease commencement to perform lease classification tests on lease components and to measure lease liabilities and ROU assets. The incremental borrowing rate used by the Company was based on baseline rates and adjusted by the credit spreads commensurate with the Company’s secured borrowing rate over a similar term. At each reporting period when there is a new lease initiated, the rates established for that quarter will be used.

Comprehensive Income, Policy [Policy Text Block]

Comprehensive Income or Loss — ASC Topic 220, Reporting Comprehensive Income, (“ASC Topic 220”), establishes standards for reporting and presentation of comprehensive income or loss and its components in a full set of general-purpose consolidated financial statements. The Company has chosen to report comprehensive income or loss in the statements of operations. Comprehensive income or loss is comprised of net income or loss and all changes to shareholders’ equity except those due to investments by owners and distributions to owners.

Retained Earnings [Policy Text Block]

Retained Earnings — It is the intention of the Company to re-invest earnings of its foreign subsidiaries in the operations of those subsidiaries. These taxes are undeterminable as of the date of this Annual Report. The amount of earnings retained in subsidiaries was $21,001 and $18,755 as of June 30, 2023 and 2022, respectively.

Share-Based Payment Arrangement [Policy Text Block]

Stock-based compensation — The Company calculates compensation expense related to stock option awards made to employees and directors based on the fair value of stock-based awards on the date of grant. The Company determines the grant date fair value of our stock option awards using the Black-Scholes option pricing model and for awards without performance condition the related stock-based compensation is recognized over the period in which a participant is required to provide service in exchange for the stock-based award, which is generally four years. The Company recognizes stock-based compensation expense in the consolidated statements of shareholders' equity based on awards ultimately expected to vest. Forfeitures are estimated on the date of grant and revised if actual or expected forfeiture activity differs materially from original estimates.

Determining the fair value of stock-based awards at the grant date requires significant judgment. The determination of the grant date fair value of stock-based awards using the Black-Scholes option-pricing model is affected by our estimated common stock fair value as well as other subjective assumptions including the expected term of the awards, the expected volatility over the expected term of the awards, expected dividend yield and risk-free interest rates. The assumptions used in our option-pricing model represent management’s best estimates and are as follows:

•	Fair Value of Common Stock. We determined the fair value of each share of underlying common stock based on the closing price of our common stock on the date of grant.
•	Expected Term. The expected term of employee stock options reflects the period for which we believe the option will remain outstanding based on historical experience and future expectations.
•	Expected Volatility. We base expected volatility on our historical information over a similar expected term.

Fair Value of Financial Instruments, Policy [Policy Text Block]

Fair Values of Financial Instruments — Carrying values of trade account receivables, accounts payable, accrued expense, and term deposits approximate their fair value due to their short-term maturities. Carrying values of the Company’s lines of credit and long-term debt are considered to approximate their fair value because the interest rates associated with the lines of credit and long-term debt are adjustable in accordance with market situations when the Company tries to borrow funds with similar terms and remaining maturities. See Note 16 for detailed discussion of the fair value measurement of financial instruments.

ASC Topic 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The financial assets and financial liabilities that require recognition under the guidance include available-for-sale investments, employee deferred compensation plan and foreign currency derivatives. The guidance establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the observable inputs be used when available. Observable inputs are inputs that market participants would use in pricing the asset or liability developed based on market data obtained from sources independent of us. Unobservable inputs are inputs that reflect our assumptions about the assumptions market participants would use in pricing the asset or liability developed based on the best information available under the circumstances. As such, fair value is a market-based measure considered from the perspective of a market participant who holds the asset or owes the liability rather than an entity-specific measure. The hierarchy is broken down into three levels based on the reliability of inputs as follows:

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Level 1—Valuations based on quoted prices in active markets for identical assets or liabilities that we can access. Since valuations are based on quoted prices that are readily and regularly available in an active market, valuation of these products does not entail a significant degree of judgment. Financial assets utilizing Level 1 inputs include U.S. treasuries, most money market funds, marketable equity securities and our employee deferred compensation plan;

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Level 2—Valuations based on quoted prices in markets that are not active or for which all significant inputs are observable, directly or indirectly. Financial assets and liabilities utilizing Level 2 inputs include foreign currency forward exchange contracts, most commercial paper and corporate notes and bonds; and

●	Level 3—Valuations based on inputs that are unobservable and significant to the overall fair value measurement.

Investment, Policy [Policy Text Block]

Investments — The Company (a) evaluates the sufficiency of the total equity at risk, (b) reviews the voting rights and decision-making authority of the equity investment holders as a group, and whether there are any guaranteed returns, protection against losses, or capping of residual returns within the group, and (c) establishes whether activities within the venture are on behalf of an investor with disproportionately few voting rights in making this VIE determination. The Company would consolidate an investment that is determined to be a VIE if it was the primary beneficiary. The primary beneficiary of a VIE is determined by a primarily qualitative approach, whereby the variable interest holder, if any, has the power to direct the VIE’s most significant activities and is the primary beneficiary. A standard became effective and changed the method by which the primary beneficiary of a VIE is determined. Through a primarily qualitative approach, the variable interest holder who has the power to direct the VIE’s most significant activities is determined to be the primary beneficiary. To the extent that the investment does not qualify as VIE, the Company further assesses the existence of a controlling financial interest under a voting interest model to determine whether the investment should be consolidated.

Equity Method — The Company analyzes its investments to determine if they should be accounted for using the equity method. Management evaluates both Common Stock and in-substance Common Stock to determine whether they give the Company the ability to exercise significant influence over operating and financial policies of the investment even though the Company holds less than 50% of the Common Stock and in-substance Common Stock. The net income of the investment, if any, will be reported as “Equity in earnings of unconsolidated joint ventures, net of tax” in the Company’s consolidated statements of operations and comprehensive income.

Cost Method — Investee companies not accounted for under the consolidation or the equity method of accounting are accounted for under the cost method of accounting. Under this method, the Company’s share of the earnings or losses of such Investee companies is not included in the consolidated balance sheet or statements of operations and comprehensive income or loss. However, impairment charges are recognized in the consolidated statements of operations and comprehensive income or loss. If circumstances suggest that the value of the investee Company has subsequently recovered, such recovery is not recorded.

Contingent Liability Reserve Estimate, Policy [Policy Text Block]

Contingent Liabilities — Certain conditions may exist as of the date the consolidated financial statements are issued, which may result in a loss to the Company, but which will only be resolved when one or more future events occur or fail to occur. The Company’s management and its legal counsel assess such contingent liabilities, and such assessment inherently involves an exercise of judgment. In assessing loss contingencies related to legal proceedings that are pending against the Company or unasserted claims that may result in such proceedings, the Company’s legal counsel evaluates the perceived merits of any legal proceedings or unasserted claims, as well as the perceived merits of the amount of relief sought or expected to be sought therein.

If the assessment of a contingency indicates that it is probable that a material loss has been incurred and the amount of the liability can be estimated, then the estimated liability would be accrued in the Company’s consolidated financial statements. If the assessment indicates that a potentially material loss contingency is not probable, but is reasonably possible, or is probable but cannot be estimated, then the nature of the contingent liability, together with an estimate of the range of possible loss if determinable and material, would be disclosed.

Loss contingencies considered remote are generally not disclosed unless they involve guarantees, in which case the nature of the guarantee would be disclosed.