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Leases (Details)
$ in Thousands
 12 Months Ended
Nov. 07, 2023
ft²
Dec. 31, 2023
USD ($)
ft²
Dec. 31, 2022
USD ($)
Apr. 21, 2023
Right-of-use assets:        
Operating lease right-of-use asset   $ 1,349 $ 334  
Operating lease liabilities:        
Accrued expenses   $ 231 $ 222  
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]   Accrued expenses Accrued expenses  
Operating lease liability, non-current portion   $ 1,160 $ 117  
Present value of lease liability   $ 1,391    
Remaining lease term   4 years 8 months 12 days    
Discount rate   6.70%    
Operating cash outflows   $ 400 $ 400  
Office space in Minneapolis, Minnesota        
Lessee, Lease, Description [Line Items]        
Area of land leased | ft²   31,505    
Lessee, Operating Lease, Renewal Term   3 years   49 years
Additional area of land leased | ft² 7,615      
Additional renewal term option 57 years      
Lessee, Operating Lease, Existence of Option to Extend [true false]   true