Annual report [Section 13 and 15(d), not S-K Item 405]

Basis of Presentation and Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (Details)

v3.25.1
Basis of Presentation and Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended
Jul. 01, 2027
Sep. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Dec. 15, 2023
Dec. 31, 2022
Cash, Cash Equivalents and Restricted Cash            
Unrestricted cash     $ 8,983 $ 124,938    
Unrestricted cash equivalents     92,671 28,352    
Total unrestricted cash and cash equivalents     101,654 153,290    
Short-term restricted cash     1,330 160    
Long-term restricted cash     3,432 6,100    
Total restricted cash     4,762 6,260    
Total unrestricted and restricted cash and cash equivalents     106,416 159,550   $ 57,826
Cash and Cash Equivalents            
Allowance for credit losses on investments in debt securities     0      
Proceeds from sale of available-for-sale debt securities     40,500      
Gain form sale of available-for-sale debt securities     400      
Available for sale securities, Amortized Cost Basis     20,294 $ 0    
Available for sale securities, Unrealized Gains     73      
Available for sale securities, Estimated Fair Value     20,367      
Restricted Cash            
Restricted cash released to unrestricted cash   $ 1,250        
U.S. treasury bills            
Cash and Cash Equivalents            
Available for sale securities, Amortized Cost Basis     20,294      
Available for sale securities, Unrealized Gains     73      
Available for sale securities, Estimated Fair Value     $ 20,367      
Cash reserve accounts            
Cash, Cash Equivalents and Restricted Cash            
Total restricted cash         $ 6,300  
Cash reserve account, Interest and administrative fees            
Cash, Cash Equivalents and Restricted Cash            
Total restricted cash         5,800  
Cash reserve account, Interest and administrative fees | Forecast            
Restricted Cash            
Additional amount of cash required to fund reserve account $ 800          
Cash reserve account, Operating expenses            
Cash, Cash Equivalents and Restricted Cash            
Total restricted cash         $ 500