Note 2 - Variable Interest Entities - Consolidated VIEs' Assets and Liabilities (Details) - USD ($) $ in Thousands		Jun. 30, 2022	Dec. 31, 2021
Cash and cash equivalents	[1]	$ 4,454	$ 7,173
Accounts receivable, net	[1]	3,238	3,439
Prepayment and deposit to suppliers	[1]	6,303	7,559
Due from related parties	[1]	15	90
Other current assets, net	[1]	1,602	1,657
Total current assets		15,612	19,918
Long-term investments	[1]	2,216	2,280
Operating Lease, Right-of-Use Asset	[1]	2,038	2,019
Property and equipment, net *	[1]	307	375
Long-term deposits and prepayments *	[1]	121	75
Deferred tax assets, net	[1]	423	441
Total Assets		27,157	32,631
Accounts payable	[1]	567	1,119
Advance from customers	[1]	794	1,245
Accrued payroll and other accruals	[1]	163	389
Taxes payable	[1]	3,376	3,534
Operating lease liabilities	[1]	391	202
Lease payment liability related to short-term leases		105	152
Other current liabilities	[1]	136	141
Total current liabilities		5,789	8,821
Operating lease liabilities-Non current	[1]	1,748	1,907
Total Liabilities		7,667	10,865
Variable Interest Entity, Primary Beneficiary [Member]
Cash and cash equivalents		577	181
Accounts receivable, net		3,238	2,796
Prepayment and deposit to suppliers		3,429	5,287
Due from related parties		15	90
Other current assets, net		3	4
Total current assets		7,262	8,358
Long-term investments		471	496
Operating Lease, Right-of-Use Asset		250	21
Property and equipment, net *		138	168
Long-term deposits and prepayments *		49	0
Deferred tax assets, net		423	441
Total Assets		8,593	9,484
Accounts payable		567	1,119
Advance from customers		735	1,113
Accrued payroll and other accruals		61	83
Taxes payable		2,714	2,849
Operating lease liabilities		195	9
Lease payment liability related to short-term leases		105	110
Other current liabilities		48	53
Total current liabilities		4,425	5,336
Operating lease liabilities-Non current		48	10
Total Liabilities		$ 4,473	$ 5,346

[1] All of the VIEs' assets can be used to settle obligations of their primary beneficiary. Liabilities recognized as a result of consolidating these VIEs do not represent additional claims on the Company’s general assets (Note 2).