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Inventory
12 Months Ended
Dec. 31, 2012
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]

5. Inventory

 

    December 31,  
    2012     2011  
Water stock   $ 32,515     $ 33,436  
Consumables stock     276,568       275,119  
Spare parts stock     5,418,759       5,004,554  
Total inventory     5,727,842       5,313,109  
Less current portion     1,757,601       1,451,639  
Inventory (non-current)   $ 3,970,241     $ 3,861,470