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Note 21 - Related party transactions (Details) - Revenue from related parties (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Related Party Transaction [Line Items]
Revenue from related parties	$ 115	$ 51	$ 174	$ 66
Beijing Saimeiwei Food Equipment Technology [Member]
Related Party Transaction [Line Items]
Revenue from related parties	78	41	122	55
Beijing Fengshangyinli Technology [Member]
Related Party Transaction [Line Items]
Revenue from related parties	4		6	1
Beijing Telijie Century Environmental Technology [Member]
Related Party Transaction [Line Items]
Revenue from related parties	$ 33	$ 10	$ 46	$ 10

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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