Note 2 - Variable Interest Entities - Consolidated VIEs' Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Dec. 31, 2023
Cash and cash equivalents	$ 1,761	$ 812
Accounts receivable, net	1,102	1,614
Prepayment and deposit to suppliers	4,727	4,508
Other current assets, net	878	2,239
Total current assets	8,468	9,173
Property and equipment, net	150	116
Total Assets	9,650	9,686	$ 11,007	$ 11,233
Accounts payable	206	93
Advance from customers	599	489
Accrued payroll and other accruals	155	557
Taxes payable	3,208	3,152
Other current liabilities	524	480
Total current liabilities	6,018	5,846
Total Liabilities	6,241	5,968
Variable Interest Entity, Primary Beneficiary [Member]
Cash and cash equivalents	3	24
Prepayment and deposit to suppliers	1,072	1,189
Other current assets, net	1	2
Total current assets	1,076	1,249
Property and equipment, net	69	85
Total Assets	1,145	1,334
Accounts payable	95	93
Advance from customers	457	489
Accrued payroll and other accruals	20	14
Taxes payable	2,550	2,521
Other current liabilities	586	546
Total current liabilities	3,708	3,663
Total Liabilities	3,708	3,663
Variable Interest Entity, Primary Beneficiary [Member] | Nonrelated Party [Member]
Accounts receivable, net	$ 0	$ 34