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Commitments (Details)
$ in Thousands, $ in Thousands
 1 Months Ended 12 Months Ended
Jan. 31, 2018
USD ($)
Jan. 31, 2013
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2019
MXN ($)
Feb. 22, 2018
USD ($)
Dec. 31, 2012
MXN ($)
Disclosure of contingent liabilities in business combination [line items]                
Lease Expire dates     2020          
EnerNOC [Member]                
Disclosure of contingent liabilities in business combination [line items]                
Term of agreement   5 years            
ECOM LTDA [Member]                
Disclosure of contingent liabilities in business combination [line items]                
Termination period of agreement February 2020              
Primental Technologies [Member]                
Disclosure of contingent liabilities in business combination [line items]                
Termination period of agreement     16 months          
Percentage of advance payment     20.00%          
Estimated project cost           $ 23,200    
USD [Member]                
Disclosure of contingent liabilities in business combination [line items]                
Rental expenses relating to operating leases     $ 100 $ 700 $ 500      
Consideration of sales and used tax               $ 2,452,028
Interest on sales and used tax               $ 394,138
USD [Member] | EnerNOC [Member]                
Disclosure of contingent liabilities in business combination [line items]                
Annual consideration     1,800 $ 2,800 $ 1,000      
USD [Member] | ECOM LTDA [Member]                
Disclosure of contingent liabilities in business combination [line items]                
Obligation under agreements $ 6,300              
USD [Member] | Primental Technologies [Member]                
Disclosure of contingent liabilities in business combination [line items]                
Obligation under agreements             $ 1,670  
Amount exercised under agreement             $ 11,900  
USD [Member] | Qualified Supply Service Scheme [Member]                
Disclosure of contingent liabilities in business combination [line items]                
Estimated project cost     $ 1,850