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Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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No definition available.

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Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Note 1 - Organization and Basis of Presentation (Details Textual) $ in Thousands	3 Months Ended			6 Months Ended
	Dec. 31, 2021 USD ($)	Sep. 30, 2021	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jun. 30, 2021 USD ($)
Number of Operating Segments		4		4
Cash, Cash Equivalents, and Short-term Investments, Total	$ 12,523			$ 12,523
Line of Credit Facility, Remaining Borrowing Capacity	5,207			5,207
Net Income (Loss) Available to Common Stockholders, Basic, Total	855		$ 235	1,772	$ 227
Retained Earnings (Accumulated Deficit), Ending Balance	8,596			8,596		$ 6,824
Subsidiaries [Member]
Retained Earnings (Accumulated Deficit), Ending Balance	$ 17,430			$ 17,430		$ 16,683
Minimum [Member]
Trade Accounts Receivable, Credit Term (Day)				30 days
Maximum [Member]
Trade Accounts Receivable, Credit Term (Day)				90 days
Trio-Tech (Tianjin) Co., Ltd, [Member]
Noncontrolling Interest, Ownership Percentage by Parent	100.00%			100.00%