Quarterly report pursuant to Section 13 or 15(d)

Asset Purchase Agreements (Narrative) (Details)

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Asset Purchase Agreements (Narrative) (Details)
$ in Thousands
 6 Months Ended
Jun. 27, 2024
USD ($)
D
May 13, 2024
Jul. 28, 2023
USD ($)
Dec. 30, 2022
USD ($)
shares
Jun. 30, 2024
USD ($)
Dec. 31, 2023
USD ($)
Purchase Price recorded in accrued expenses - other         $ 3,788 $ 817
Sale of stock, number of shares issued | shares       4,900,000    
Sale of Stock, Consideration Received on Transaction       $ 150,000    
Number of days to dispose of assets purchased   180 days        
Avenue | InvaGen            
Payments of milestones         $ 600  
Percentage of contingent fee payable         7.50%  
Contingent fee payable from proceeds of future financing         $ 4,000  
Mustang | UBriGene            
Consideration Transferred $ 4,700   $ 6,000      
Fair value of assets less cost to sell in repurchase transaction 2,200          
Remaining purchase consideration allocated to the supplies repurchased 2,500          
Fair value of supplies with no alternative future use expensed as research and development expense 2,200          
Fair Value of Supplies With Alternative Future Use Expensed as Research and Development Expense 300          
Aggregate value of assets and associated supplies met the criteria to be classified as held for sale at the date of acquisition 2,200          
Purchase Price recorded in accrued expenses - other 1,400       1,400  
Consideration Transferred 1,400          
Gain on sale of asset     1,400      
Transaction Related Expenses     $ 300      
Upfront payment $ 100          
Upfront payment due period | D 5          
Subsequent amount $ 1,300          
Subsequent payment due period 12 months          
Interest rate on outstanding liability 5.00%          
Net Receivable from uBriGene $ 3,300          
Outstanding receivable from uBriGene 6,900          
Outstanding payables of the company $ 3,600          
Net Assets Below 20 Million | Mustang | UBriGene            
Subsequent payment extended due period 6 months          
Asset acquisition consideration, threshold net assets considered for delay in subsequent payment         $ 20,000