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Inventory
 12 Months Ended
Dec. 31, 2018
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]
6. Inventory
 
 
 
December 31,
 
 
 
2018
 
 
2017
 
Water stock
 
$
36,837
 
 
$
28,332
 
Consumables stock
 
 
106,925
 
 
 
103,442
 
Spare parts stock
 
 
6,634,157
 
 
 
5,914,740
 
Total inventory
 
 
6,777,919
 
 
 
6,046,514
 
Less current portion
 
 
2,232,721
 
 
 
1,583,553
 
Inventory (non-current)
 
$
4,545,198
 
 
$
4,462,961