Note 2 - Variable Interest Entities - Consolidated VIEs' Assets and Liabilities (Details) - USD ($) $ in Thousands		Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Cash and cash equivalents		$ 1,123	$ 817
Accounts receivable, net		1,478	844
Prepayment and deposit to suppliers		4,843	4,505
Other current assets, net		2,412	2,794
Total current assets		9,856	8,960
Property and equipment, net		134	215
Deferred tax assets, net		410	401
Total Assets		11,007	11,233	$ 14,779	$ 19,658
Accounts payable	[1]	500	201
Advance from customers	[1]	700	843
Accrued payroll and other accruals	[1]	103	350
Taxes payable	[1]	3,228	3,194
Lease payment liability related to short-term leases *	[1]	101	99
Other current liabilities	[1]	543	144
Total current liabilities		5,981	4,855
Total Liabilities		6,106	4,979
Variable Interest Entity, Primary Beneficiary [Member]
Cash and cash equivalents		82	367
Prepayment and deposit to suppliers		1,971	2,005
Other current assets, net		0	2
Total current assets		2,332	3,218
Property and equipment, net		97	139
Deferred tax assets, net		410	401
Total Assets		2,839	3,758
Accounts payable		230	201
Advance from customers		700	843
Accrued payroll and other accruals		18	37
Taxes payable		2,586	2,555
Lease payment liability related to short-term leases *		101	99
Other current liabilities		506	56
Total current liabilities		4,141	3,791
Total Liabilities		4,141	3,791
Variable Interest Entity, Primary Beneficiary [Member] | Nonrelated Party [Member]
Accounts receivable, net		$ 279	$ 844

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