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Note 8 - Due from Related Parties (Details) - Due from Related Parties (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Related Party Transaction [Line Items]    
Due from related parties, current $ 381 $ 502
Beijing Fengshangyinli Technology [Member]
   
Related Party Transaction [Line Items]    
Due from related parties, current   36
Beijing Saimeiwei Food Equipment Technology [Member]
   
Related Party Transaction [Line Items]    
Due from related parties, current 212 295
Beijing Telijie Century Environmental Technology [Member]
   
Related Party Transaction [Line Items]    
Due from related parties, current $ 169 $ 171