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Segment and Geographic Information - Summary of Revenues Based on Location of Customers (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Revenues From External Customers And Long Lived Assets [Line Items]    
Total revenues $ 8,034 $ 1,169
United States    
Revenues From External Customers And Long Lived Assets [Line Items]    
Total revenues 761 722
Argentina    
Revenues From External Customers And Long Lived Assets [Line Items]    
Total revenues 6,681  
India    
Revenues From External Customers And Long Lived Assets [Line Items]    
Total revenues 100 7
Africa    
Revenues From External Customers And Long Lived Assets [Line Items]    
Total revenues 106 182
Canada    
Revenues From External Customers And Long Lived Assets [Line Items]    
Total revenues 354 $ 258
Austria    
Revenues From External Customers And Long Lived Assets [Line Items]    
Total revenues $ 32