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Related Party Transactions (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Nov. 12, 2020
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Dec. 31, 2021
Mar. 31, 2022
Feb. 12, 2020
Related Party Transactions (Details) [Line Items]                  
Revenue   $ 17,993 $ 19,217 $ 36,229 $ 37,688        
Accounts payable   16,053,000   16,053,000   $ 6,081,000 $ 2,658,000    
Revenue           1,600,000 800,000    
Accounts receivable related parties           800,000 300,000    
Other expenses           2,100,000 300,000    
Affiliate revenue payable related to engineering services           400,000 200,000    
KBR, Inc. [Member]                  
Related Party Transactions (Details) [Line Items]                  
Affiliate revenue payable related to engineering services           1,900,000 1,300,000    
Ownership rate 10.00%                
Accounts receivables           300,000 200,000    
X Energy, LLC [Member]                  
Related Party Transactions (Details) [Line Items]                  
Affiliate accounts payable related to energy expenses           100,000 0    
Penumbra, LLC [Member]                  
Related Party Transactions (Details) [Line Items]                  
Expenses with related to management fees           100,000 $ 200,000    
Related Party [Member] | Axiom Space Inc [Member]                  
Related Party Transactions (Details) [Line Items]                  
Revenue   100,000 300,000 100,000 1,400,000        
Accounts receivable   1,000,000   1,000,000   800,000      
Related Party [Member] | IBX, LLC [Member]                  
Related Party Transactions (Details) [Line Items]                  
Management fee expense   200,000 1,100,000 600,000 1,500,000        
Accounts payable           400,000   $ 600,000  
Related Party [Member] | KBR, Inc. [Member]                  
Related Party Transactions (Details) [Line Items]                  
Revenue   800,000 500,000 1,400,000 900,000        
Accounts receivable   300,000   300,000   300,000      
Related Party [Member] | X-energy, LLC [Member]                  
Related Party Transactions (Details) [Line Items]                  
Accounts payable   $ 600,000   $ 600,000   $ 100,000      
Related Party [Member] | Penumbra, LLC [Member]                  
Related Party Transactions (Details) [Line Items]                  
License fee expense     $ 17,000   $ 67,000        
Affiliated Entity [Member] | S N S [Member] | KBR, Inc. [Member]                  
Related Party Transactions (Details) [Line Items]                  
Equity ownership percentage                 10.00%