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Note 8 - Other Assets (Details Textual) ¥ in Thousands, $ in Thousands | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Jun. 30, 2021 USD ($) | Mar. 31, 2022 USD ($) | Mar. 31, 2022 CNY (¥) | Oct. 02, 2013 USD ($) | Oct. 02, 2013 CNY (¥) | Dec. 02, 2010 USD ($) | Dec. 02, 2010 CNY (¥)
Percentage of Investment |  |  |  | 10.00% | 10.00% | 10.00% | 10.00%
Management Fee Payable | $ 803 |  | ¥ 5,000 |  |  |  | ¥ 5,000
Loss On Joint Venture | (22) |  | (137) |  |  | $ 22 | ¥ 137
Investments, Total | 803 |  | 5,000 | $ 788,000 | ¥ 5,000 |  |
Loans and Leases Receivable, Related Parties, Ending Balance | 788 | $ 788 | 5,000 |  |  |  |
Interest Receivable | 197 | 197 | 1,250 |  |  |  |
Impairment of Interest | 143 | $ 143 | ¥ 906 |  |  |  |
Asset Impairment Charges, Total | $ 1,580 |  |  |  |  |  |

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