Note 8 - Other Assets - Down Payment for Purchase of Investment Properties (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2023 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 (¥)
Original Investment (10% of Junzhou equity)	$ 1,606	¥ 10,000
Less: Management Fee	(803)	(5,000)
Net Investment	803	5,000			$ 803	¥ 5,000,000
Less: Share of Loss on Joint Venture	(22)	(137)					$ 22	¥ 137
Net Investment as Down Payment (Note *a)	781	4,863
Loans Receivable	722	5,000	$ 722	¥ 5,000
Interest Receivable	180	1,250	180	1,250
Less: Impairment of Interest	(131)	(906)	$ 131	¥ 906
Transferred to Down Payment (Note *b)	771	5,344
* Down Payment for Purchase of Investment Properties	1,552	10,207
Add: Effect of foreign currency exchange	28	0
Less: Provision of Impairment loss on other assets	$ (1,580)	¥ (10,207)