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Acquisition - Narrative (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Apr. 09, 2021
May 31, 2022
May 31, 2021
Sep. 30, 2022
Dec. 31, 2022
Dec. 31, 2021
Apr. 08, 2021
Business Acquisition [Line Items]              
Amount due at closing         $ 0 $ 160  
(Loss) gain on debt (extinguishment)/forgiveness         (942) 1,273  
Loss on pre-existing agreement         $ 0 $ 30,368  
Hi-Power              
Business Acquisition [Line Items]              
Initial ownership interest 100.00%           49.00%
Hi-Power              
Business Acquisition [Line Items]              
Percentage of voting interests acquired 51.00%            
Aggregate purchase price $ 25,000            
Aggregate purchase price payment due this year 5,000            
Aggregate purchase price payment due year one 5,000            
Aggregate purchase price payment due year two 5,000            
Aggregate purchase price payment due year three 5,000            
Aggregate purchase price payment due year four 5,000            
Amount due at closing   $ 5,000 $ 5,000        
(Loss) gain on debt (extinguishment)/forgiveness       $ 942      
Payment to terminate agreement 724            
Consideration transferred 418            
Fair value of previously held ownership interest 205            
Loss on remeasurement 7,480            
Hi-Power | Holtec Power, Inc.              
Business Acquisition [Line Items]              
Aggregate purchase price 35,283            
Amount due at closing 10,283            
Fair value 33,474            
Payment to terminate agreement $ 32,750