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Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 04, 2024
Apr. 05, 2023
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Sep. 15, 2022
Income Taxes [Line Items]            
U.S. federal corporate income tax rate (percent)     21.00%      
Net operating loss carryforwards         $ 34,000  
Operating loss carryforwards, subject to expiration     $ 88,200      
Unrecognized tax benefits     344 $ 344 344  
Proceeds from sale of NOLs, gross $ 8,900 $ 25,900        
Proceeds from sale of NOLs 700 2,200        
Loss on sale of NOLs 100 100        
Benefit from income taxes $ 800   (798) (2,330)    
CEND            
Income Taxes [Line Items]            
Fair market value of tax NOLs         $ 36,100  
Effective tax rate         2.54%  
Limitation on NOL carryforwards         $ 917  
New Jersey            
Income Taxes [Line Items]            
Proceeds from sale of NOLs, gross   $ 2,300        
Federal            
Income Taxes [Line Items]            
Net operating loss carryforwards     57,900 43,700    
Federal | Research Tax Credit Carryforward            
Income Taxes [Line Items]            
Tax credit carryforward     500      
Federal | CEND            
Income Taxes [Line Items]            
Net operating loss carryforwards         3,600 $ 3,100
Operating loss carryforwards, post acquisition         $ 459  
State | Research Tax Credit Carryforward            
Income Taxes [Line Items]            
Tax credit carryforward     100      
State | CEND            
Income Taxes [Line Items]            
Net operating loss carryforwards           $ 4,300
State | New Jersey            
Income Taxes [Line Items]            
Net operating loss carryforwards     24,600 19,400    
State | California            
Income Taxes [Line Items]            
Net operating loss carryforwards     9,200 9,200    
State | New York            
Income Taxes [Line Items]            
Net operating loss carryforwards     1,900 1,900    
Foreign Tax Jurisdiction | CEND            
Income Taxes [Line Items]            
Net operating loss carryforwards     $ 2,300 $ 2,400