Note 20 - Related party transactions (Detail) - Revenue from related parties (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Revenue from related party	$ 59	$ 15	$ 15
Beijing Saimeiwei Food Equipment Technology [Member]
Revenue from related party	44		14
Beijing Fengshangyinli Technology [Member]
Revenue from related party	2		1
Beijing Telijie Century Environmental Technology [Member]
Revenue from related party	$ 13

- Definition

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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