Note 2 - Variable Interest Entities - Consolidated VIEs' Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Cash and cash equivalents	$ 807	$ 812
Accounts receivable, net	2,118	1,614
Prepayment and deposit to suppliers	4,504	4,508
Other current assets, net	796	2,239
Total current assets	8,225	9,173
Property and equipment, net	143	116
Total Assets	9,541	9,686	$ 11,404	$ 11,233
Accounts payable	97	93
Advance from customers	452	489
Accrued payroll and other accruals	280	557
Taxes payable	3,159	3,152
Other current liabilities	495	480
Total current liabilities	6,105	5,846
Deferred tax liabilities	105	0
Total Liabilities	6,369	5,968
Variable Interest Entity, Primary Beneficiary [Member]
Cash and cash equivalents	14	24
Prepayment and deposit to suppliers	1,133	1,189
Other current assets, net	2	2
Total current assets	1,175	1,249
Property and equipment, net	78	85
Total Assets	1,253	1,334
Accounts payable	97	93
Advance from customers	452	489
Accrued payroll and other accruals	15	14
Taxes payable	2,524	2,521
Other current liabilities	561	546
Total current liabilities	3,649	3,663
Deferred tax liabilities	0	0
Total Liabilities	3,649	3,663
Variable Interest Entity, Primary Beneficiary [Member] | Nonrelated Party [Member]
Accounts receivable, net	$ 26	$ 34