Note 7 - Investment Properties (Details Textual) ¥ in Thousands, $ in Thousands			1 Months Ended		3 Months Ended		9 Months Ended		12 Months Ended
	Feb. 10, 2022 USD ($)	Feb. 10, 2022 CNY (¥)	Aug. 31, 2022 USD ($)	Aug. 31, 2022 CNY (¥)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Jun. 30, 2010 USD ($)	Jun. 30, 2010 CNY (¥)	Mar. 31, 2023 CNY (¥)	Jun. 30, 2022 USD ($)	Jun. 30, 2022 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 (Square Metre) | m²														311.99	311.99
Purchase Obligation, Total														$ 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	¥ 15
Operating Lease, Lease Income					0	$ 0	8	$ 4
Depreciation					4	4	12	12
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
Depreciation					7	7	20	21
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					648		648				¥ 4,025	$ 648	¥ 4,025
Monthly Lease Revenue Amount			$ 1	¥ 6
Operating Lease, Lease Income					3	4	7	19
Depreciation					7	8	22	23
CHINA
Operating Lease, Lease Income					3	4	15	23
Depreciation					$ 18	$ 19	$ 54	$ 54