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Commitments (Details) - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended
Jan. 31, 2018
Jan. 31, 2013
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
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        
USD [Member]          
Disclosure of contingent liabilities in business combination [line items]          
Rental expenses relating to operating leases     $ 100 $ 700 $ 500
USD [Member] | EnerNOC [Member]          
Disclosure of contingent liabilities in business combination [line items]          
Annual consideration     1,100 $ 1,800  
USD [Member] | ECOM LTDA [Member]          
Disclosure of contingent liabilities in business combination [line items]          
Obligation under agreements $ 6,300        
USD [Member] | Qualified Supply Service Scheme [Member]          
Disclosure of contingent liabilities in business combination [line items]          
Budget amount expensed     24,000    
Estimated project cost     $ 1,850