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Income Taxes (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 04, 2024
Apr. 05, 2023
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Dec. 31, 2022
Sep. 15, 2022
Operating Loss Carryforwards [Line Items]              
Operating loss carryforwards subject to expiration         $ 88,200    
Unrecognized tax benefits         344 $ 344  
Proceeds from sale of NOLs, gross $ 8,900            
Proceeds from sale of NOLs $ 700            
Benefit from income taxes   $ 800 $ (798) $ 0      
Loss on sale of NOL   $ 100          
CEND              
Operating Loss Carryforwards [Line Items]              
Fair value market of tax NOLs         $ 36,100    
Effective income tax rate reconciliation         2.54%    
NOL annual limitation         $ 917    
Federal              
Operating Loss Carryforwards [Line Items]              
Net operating loss carryforwards, prior to write down         43,700 33,700  
Net operating loss carryforwards           34,000  
Federal | Research Tax Credit Carryforward              
Operating Loss Carryforwards [Line Items]              
Tax credit carryforward         500    
Federal | CEND              
Operating Loss Carryforwards [Line Items]              
Net operating loss carryforwards         3,600   $ 3,100
Operating loss carryforwards, post acquisition         459    
State | Research Tax Credit Carryforward              
Operating Loss Carryforwards [Line Items]              
Tax credit carryforward         100    
State | CEND              
Operating Loss Carryforwards [Line Items]              
Net operating loss carryforwards             $ 4,300
State | New Jersey              
Operating Loss Carryforwards [Line Items]              
Net operating loss carryforwards         19,400 35,500  
State | California              
Operating Loss Carryforwards [Line Items]              
Net operating loss carryforwards         9,200 9,200  
State | New York              
Operating Loss Carryforwards [Line Items]              
Net operating loss carryforwards         1,900 1,900  
Foreign Tax Authority | CEND              
Operating Loss Carryforwards [Line Items]              
Net operating loss carryforwards         $ 2,400 $ 1,800