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Geographic information (Details) (CAD)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Revenues derived by geography 3,913,367us-gaap_Revenues 2,684,095us-gaap_Revenues 10,937,575us-gaap_Revenues
North America (United States) [Member]      
Revenues derived by geography 3,913,367us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember		      
Asia (Pakistan) [Member]      
Revenues derived by geography    2,659,292us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaMember		   
Central America (Mexico, Belize, Guatemala) [Member]      
Revenues derived by geography    24,803us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_CentralAmericaMember		 6,403,534us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_CentralAmericaMember
South America (Colombia, Argentina) [Member]      
Revenues derived by geography      4,534,041us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_SouthAmericaMember