Note 14 - Commitments and Contingencies (Details Textual) - CHINA ¥ in Thousands, $ in Thousands	Sep. 23, 2022 USD ($)	Sep. 23, 2022 CNY (¥)	Jun. 30, 2022 USD ($)	Jun. 30, 2022 CNY (¥)
Subsequent Event [Member]
Contractual Obligation, Total	$ 2,567	¥ 17,203
Equipment Purchase [Member]
Contractual Obligation, Total			$ 50	¥ 220
Infrastructure Costs [Member]
Contractual Obligation, Total			$ 168	¥ 1,126