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v3.22.1

Note 1 - Organization and Basis of Presentation (Details Textual) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Mar. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Jun. 30, 2021 USD ($)
Number of Operating Segments | 4 |  | 4 |  |
Cash, Cash Equivalents, and Short-Term Investments, Total | $ 12,431 |  | $ 12,431 |  |
Line of Credit Facility, Remaining Borrowing Capacity | 5,158 |  | 5,158 |  |
Net Income (Loss) Available to Common Stockholders, Basic, Total | (167) | $ 178 | 1,605 | $ 405 |
Retained Earnings (Accumulated Deficit), Total | 8,429 |  | 8,429 |  | $ 6,824
Subsidiaries [Member] |  |  |  |  |
Retained Earnings (Accumulated Deficit), Total | $ 17,803 |  | $ 17,803 |  | $ 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% |  |

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