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Acquisitions - Asset Acquisitions (Details) - USD ($)
$ in Thousands
Mar. 11, 2021
Jan. 12, 2021
CH4 Energia Ltda.    
Asset Acquisition [Abstract]    
Percentage of outstanding shares acquired   100.00%
Cash consideration at date of merger   $ 903
Maximum future payments contingent on achieving certain construction milestones   3,600
Fair value of contingent payments   3,047
Acquisition related costs   295
Total purchase consideration   5,776
Deferred tax liability recognized on acquisition   $ 1,531
Pecem Energia S.A. and Energetica Camacari Muricy II S.A.    
Asset Acquisition [Abstract]    
Cash consideration at date of merger $ 8,041  
Maximum future payments contingent on achieving certain construction milestones 10,500  
Fair value of contingent payments 7,473  
Acquisition related costs 1,275  
Total purchase consideration $ 16,585  
Term of power purchase agreements 15 years  
Maximum future payments payable to shareholders $ 4,600  
Pecem Energia S.A.    
Asset Acquisition [Abstract]    
Percentage of outstanding shares acquired 100.00%  
Energetica Camacari Muricy II S.A.    
Asset Acquisition [Abstract]    
Percentage of outstanding shares acquired 100.00%