Note 2 - Variable Interest Entities - Consolidated VIEs' Assets and Liabilities (Details) - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents		$ 1,379	$ 3,717
Term deposit, restricted		25	25
Accounts receivable, net		6,749	6,359
Prepayment and deposit to suppliers, net		2,049	2,154
Due from related parties, net			226
Other current assets, net		8	19
Total current assets		10,210	12,500
Long-term investments		36
Property and equipment, net		99	142
Intangible assets, net		36	45
Operating lease right-of-use assets		17
Deferred tax assets, net		549	556
Total Assets		14,671	16,968
Current liabilities:
Short-term Bank Loans and Notes Payable	[1]	873	874
Accounts payable	[1]	742	2,869
Accrued payroll and other accruals	[1]	289	521
Taxes payable	[1]	3,082	2,997
Lease payment liability related to a short-term lease *		118		[1]
Other current liabilities	[1]	162	118
Total current liabilities		8,222	9,046
Total Liabilities		8,349	9,174
Unrelated Parties [Member]
Current liabilities:
Advance from customers *	[1]	2,768	1,061
Related Parties [Member]
Current liabilities:
Advance from customers *		53
VIEs [Member]
Current assets:
Cash and cash equivalents		660	2,303
Term deposit, restricted		25	25
Accounts receivable, net		6,749	6,359
Prepayment and deposit to suppliers, net		1,773	1,724
Due from related parties, net			26
Other current assets, net		3	11
Total current assets		9,210	10,448
Long-term investments		36
Property and equipment, net		58	84
Intangible assets, net		34	42
Operating lease right-of-use assets		17
Deferred tax assets, net		549	556
Total Assets		9,904	11,130
Current liabilities:
Short-term Bank Loans and Notes Payable		873	874
Accounts payable		740	2,868
Accrued payroll and other accruals		152	155
Taxes payable		2,648	2,562
Lease payment liability related to a short-term lease *		48
Other current liabilities		75	55
Total current liabilities		7,355	7,573
Total Liabilities		7,355	7,573
VIEs [Member] | Unrelated Parties [Member]
Current liabilities:
Advance from customers *		2,766	1,059
VIEs [Member] | Related Parties [Member]
Current liabilities:
Advance from customers *		$ 53

[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).