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Note 8 - Other Assets (Details Textual) ¥ in Thousands, $ in Thousands |  | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 02, 2010 CNY (¥) | Jun. 30, 2021 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2023 CNY (¥) | Jun. 30, 2022 USD ($) | Jun. 30, 2022 CNY (¥) | Oct. 02, 2013 USD ($) | Oct. 02, 2013 CNY (¥) | Dec. 02, 2010 USD ($) | Dec. 02, 2010 CNY (¥)
Payments to Acquire Investments | ¥ 10,000,000 |  | $ 1,641 | $ 2,275 |  |  |  |  |  |  |
Percentage of Investment |  |  |  |  |  |  |  | 10.00% | 10.00% | 10.00% | 10.00%
Management Fee Paid | ¥ | ¥ 5,000 |  |  |  |  |  |  |  |  |  |
Management Fee Payable |  |  | 803 |  | ¥ 5,000 |  |  |  |  |  |
Loss On Joint Venture |  |  | (22) |  | (137) |  |  |  |  | $ 22 | ¥ 137
Investments |  |  | 803 |  | 5,000 |  |  | $ 803 | ¥ 5,000,000 |  |
Loans and Leases Receivable, Related Parties |  |  | 722 |  | 5,000 | $ 722 | ¥ 5,000 |  |  |  |
Interest Receivable |  |  | 180 |  | 1,250 | 180 | 1,250 |  |  |  |
Impairment of Interest |  |  | $ (131) |  | ¥ (906) | $ 131 | ¥ 906 |  |  |  |
Asset Impairment Charges | $ |  | $ 1,580 |  |  |  |  |  |  |  |  |

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