Note 2 - Variable Interest Entities - Consolidated VIEs' Assets and Liabilities (Details) - USD ($) $ in Thousands		Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents		$ 812	$ 3,717
Term deposit, restricted		25	25
Accounts receivable, net		6,020	6,359
Prepayment and Deposit to Suppliers		6,906	2,154
Due from related parties, net			226
Other current assets, net		7	19
Total current assets		13,770	12,500
Long-term investments		35
Property and equipment, net		87	142
Intangible assets, net		31	45
Operating lease right-of-use assets		14
Deferred tax assets, net		549	556
Total Assets		18,960	16,968
Current liabilities:
Short-term Bank Loans and Notes Payable	[1]	424	874
Accounts payable	[1]	899	2,869
Accrued payroll and other accruals	[1]	275	521
Taxes payable	[1]	3,027	2,997
Lease payment liability related to short-term leases		174		[1]
Other current liabilities	[1]	310	118
Total current liabilities		10,425	9,046
Total Liabilities		10,549	9,174
Unrelated Parties [Member]
Current liabilities:
Advance from customers	[1]	5,052	1,061
Related Parties [Member]
Current liabilities:
Advance from customers	[1]	9
VIEs [Member]
Current assets:
Cash and cash equivalents		421	2,303
Term deposit, restricted		25	25
Accounts receivable, net		6,020	6,359
Prepayment and Deposit to Suppliers		5,430	1,724
Due from related parties, net			26
Other current assets, net		2	11
Total current assets		11,898	10,448
Long-term investments		35
Property and equipment, net		48	84
Intangible assets, net		28	42
Operating lease right-of-use assets		14
Deferred tax assets, net		549	556
Total Assets		12,572	11,130
Current liabilities:
Short-term Bank Loans and Notes Payable		424	874
Accounts payable		899	2,868
Accrued payroll and other accruals		114	155
Taxes payable		2,605	2,562
Lease payment liability related to short-term leases		72
Other current liabilities		80	55
Total current liabilities		9,255	7,573
Total Liabilities		9,255	7,573
VIEs [Member] | Unrelated Parties [Member]
Current liabilities:
Advance from customers		5,052	1,059
VIEs [Member] | Related Parties [Member]
Current liabilities:
Advance from customers		$ 9

[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).