Note 2 - Variable Interest Entities - Consolidated VIEs' Assets and Liabilities (Details) - USD ($) $ in Thousands		Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Dec. 31, 2023
Cash and cash equivalents		$ 1,706		$ 812
Accounts receivable, net		185		1,614
Prepayment and deposit to suppliers		5,254		4,508
Other current assets, net		838		2,239
Total current assets		7,983		9,173
Property and equipment, net		161	$ 161	116
Total Assets		9,246		9,686	$ 10,843	$ 11,233
Accounts payable	[1]	110		93
Advance from customers	[1]	675		489
Accrued payroll and other accruals	[1]	155		557
Taxes payable	[1]	3,175		3,152
Other current liabilities	[1]	518		480
Total current liabilities		5,430		5,846
Deferred tax liabilities		96		0
Total Liabilities		5,673		5,968
Variable Interest Entity, Primary Beneficiary [Member]
Cash and cash equivalents		74		24
Prepayment and deposit to suppliers		1,065		1,189
Other current assets, net		1		2
Total current assets		1,143		1,249
Property and equipment, net		73		85
Total Assets		1,216		1,334
Accounts payable		110		93
Advance from customers		454		489
Accrued payroll and other accruals		16		14
Taxes payable		2,531		2,521
Other current liabilities		583		546
Total current liabilities		3,694		3,663
Deferred tax liabilities		0		0
Total Liabilities		3,694		3,663
Variable Interest Entity, Primary Beneficiary [Member] | Nonrelated Party [Member]
Accounts receivable, net		$ 3		$ 34

[1] Liabilities recognized as a result of consolidating these VIEs do not represent additional claims on the Company’s general assets (Note 2).