Note 2 - Variable Interest Entities - Consolidated VIEs' Assets and Liabilities (Details) ¥ in Thousands, $ in Thousands		Jun. 30, 2018 USD ($)		Dec. 31, 2017 USD ($)	Dec. 31, 2017 CNY (¥)	Jun. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2016 CNY (¥)
Cash and cash equivalents		$ 5,086		$ 2,952		$ 1,816	$ 3,035
Accounts receivable, net		6,600		7,215
Other receivables, net		165		2,646
Prepayment and deposit to suppliers		2,579		4,073
Due from Related Parties, Current, Total				14
Total current assets		14,430		16,900
Property and equipment, net		213		299
Intangible assets, net		1,628		3,808
Goodwill				5,277
Deferred tax assets, net		677		1,358
Total Assets		21,139		28,560
Short-term Bank Loans and Notes Payable	[1]	756		765
Accounts payable	[1]	1,465		2,851
Advances from customers	[1]	1,399		3,559
Accrued payroll and other accruals	[1]	401		559
Payable for acquisition of noncontrolling interest		756
Payable for Purchasing of Software Technology			[1]	436	¥ 2,850		$ 400	¥ 2,850
Taxes payable	[1]	3,054		3,168
Other payables	[1]	145		687
Total current liabilities		7,976		12,963
Total Liabilities		9,435		13,097
VIEs [Member]
Cash and cash equivalents		1,130		2,904
Accounts receivable, net		6,600		7,215
Other receivables, net		47		2,629
Prepayment and deposit to suppliers		2,392		4,009
Due from Related Parties, Current, Total				14
Total current assets		10,169		16,771
Property and equipment, net		123		177
Intangible assets, net		52		2,112
Goodwill				5,277
Deferred tax assets, net		609		975
Total Assets		10,953		25,312
Short-term Bank Loans and Notes Payable		756		765
Accounts payable		1,464		2,848
Advances from customers		1,398		3,559
Accrued payroll and other accruals		178		159
Due to Control Group		11		11
Payable for acquisition of noncontrolling interest		756
Payable for Purchasing of Software Technology				436
Taxes payable		2,603		2,711
Other payables		84		155
Total current liabilities		7,250		10,644
Total Liabilities		$ 7,250		$ 10,644

[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).