Note 2 - Variable Interest Entities - Consolidated VIEs' Assets and Liabilities (Details) - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Cash and cash equivalents		$ 7,173	$ 4,297
Accounts receivable, net		3,439	2,407
Prepayment and deposit to suppliers		7,559	4,657
Due from Related Parties, Current, Total		90	61
Other current assets		1,657	1,462
Total current assets		19,918	12,884
Long-term investments		2,280	67
Operating Lease, Right-of-Use Asset		2,019	48
Property and equipment, net *		375	60
Intangible assets, net		7,523	2,557
Deferred tax assets		441	606
Total Assets		32,631	20,667
Accounts payable		1,119	608
Advances from customers		1,245	1,436
Accrued payroll and other accruals		389	489
Taxes payable		3,534	3,430
Operating lease liabilities		202	18
Short-term Lease Liability		152	203
Other current liabilities		141	333
Total current liabilities		8,821	8,022
Operating lease liabilities-Non current	[1]	1,907	32
Total Liabilities		10,865	8,188
Variable Interest Entity, Primary Beneficiary [Member]
Cash and cash equivalents		181	277
Accounts receivable, net		2,796	1,142
Prepayment and deposit to suppliers		5,287	2,818
Due from Related Parties, Current, Total		90	61
Other current assets		4	10
Total current assets		8,358	4,308
Long-term investments		496	67
Operating Lease, Right-of-Use Asset		21	48
Property and equipment, net *		168	32
Intangible assets, net		0	9
Deferred tax assets		441	536
Total Assets		9,484	5,000
Accounts payable		1,119	270
Advances from customers		1,113	1,436
Accrued payroll and other accruals		83	168
Taxes payable		2,849	2,755
Operating lease liabilities		9	18
Short-term Lease Liability		110	108
Other current liabilities		53	213
Total current liabilities		5,336	4,968
Operating lease liabilities-Non current		10	32
Total Liabilities		$ 5,346	$ 5,000

[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).