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22. Segment information (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue	$ 22,478	$ 18,302	$ 18,822
Geographical analysis of long-lived assets	771	773
The PRC
Revenue	10,604	9,327	10,950
Geographical analysis of long-lived assets	291	272
Hong Kong
Revenue	11,687	8,726	6,177
Geographical analysis of long-lived assets	480	501
Others
Revenue	$ 187	$ 249	$ 1,695

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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