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Note 7 - Investment Properties (Details Textual) ¥ in Thousands, $ in Thousands |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 01, 2023 USD ($) | Feb. 01, 2023 CNY (¥) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Sep. 30, 2022 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Jun. 30, 2010 USD ($) | Jun. 30, 2010 CNY (¥) | Dec. 31, 2023 CNY (¥) | Jun. 30, 2023 USD ($) | Jun. 30, 2023 CNY (¥) | Mar. 31, 2010 USD ($) m² | Mar. 31, 2010 CNY (¥) m² | Jun. 30, 2008 USD ($) | Jun. 30, 2008 CNY (¥)
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land |  |  | $ 894 |  |  | $ 894 |  |  |  | ¥ 5,554 | $ 894 | ¥ 5,554 |  |  |  |
TTCQ [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease, Operating Lease, Number of Properties |  |  |  |  |  |  |  |  |  |  |  |  | 2 | 2 |  |
Area of Real Estate Property | m² |  |  |  |  |  |  |  |  |  |  |  |  | 311.99 | 311.99 |  |
Purchase Obligation |  |  |  |  |  |  |  |  |  |  |  |  | $ 648 | ¥ 4,025 |  |
Mao Ye [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 894 | ¥ 5,554
Monthly Lease Revenue Amount | $ 2 | ¥ 14 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Lease, Lease Income |  |  | 6 | $ 2 |  | 12 | $ 8 |  |  |  |  |  |  |  |  |
Depreciation |  |  | 4 | 4 |  | 8 | 8 |  |  |  |  |  |  |  |  |
Jiang Huai [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land |  |  | 580 |  |  | 580 |  |  |  | 3,600 | 580 | 3,600 |  |  |  |
Operating Lease, Lease Income |  |  | 0 | 0 |  | 0 | 0 |  |  |  |  |  |  |  |  |
Depreciation |  |  | 6 | 14 | $ 7 | 12 |  |  |  |  |  |  |  |  |  |
Payments to Acquire Projects |  |  |  |  |  |  |  | $ 580 | ¥ 3,600 |  |  |  |  |  |  |
FuLi [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land |  |  | 647 |  |  | 647 |  |  |  | ¥ 4,025 | $ 648 | ¥ 4,025 |  |  |  |
Operating Lease, Lease Income |  |  | 0 | 2 |  | 1 | 4 |  |  |  |  |  |  |  |  |
Depreciation |  |  | 7 | 7 |  | 14 | 15 |  |  |  |  |  |  |  |  |
CHINA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Lease, Lease Income |  |  | 6 | 4 |  | 13 | 12 |  |  |  |  |  |  |  |  |
Depreciation |  |  | $ 17 | $ 18 |  | $ 34 | $ 36 |  |  |  |  |  |  |  |  |

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