Note 18 - Subsequent Events (Details Textual) - Sep. 02, 2022 - Subsequent Event [Member] $ in Millions	CNY (¥)	USD ($)
Noa Home Inc. [Member]
Payments to Acquire Businesses, Gross	¥ 7,700,000	$ 5.9
Payments to Acquire Businesses Founders	2,000,000	1.5
Payments to Acquire Businesses, Debt Paid	5,700,000	4.3
Business Combination, Annual Payments to Acquired Business	1,330	1.0
Noa Home Inc. [Member]
Revenues, Total	¥ 19,100,000	$ 15.3