v3.26.1
Note 6 - Debt (Details Textual)
 3 Months Ended 6 Months Ended
Jul. 06, 2026
USD ($)
Jul. 02, 2026
USD ($)
Jun. 30, 2026
USD ($)
May 14, 2025
USD ($)
$ / shares
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 17, 2026
USD ($)
Dec. 31, 2025
USD ($)
Nov. 25, 2025
USD ($)
Jun. 03, 2024
USD ($)
Senior Notes, Repurchase Obligation, Net, Current     $ 31,259,000   $ 31,259,000   $ 31,259,000     $ 0    
Repayments of Medium-Term Note             17,077,000 $ (0)        
Senior Notes, Current     0   0   0     17,063,000    
Unrealized Gain (Loss) on Derivatives         11,447,000 $ 8,207,000 84,593,000 8,142,000        
Asset Purchase and License Agreement With Novo Nordisk HealthCare AG [Member]                        
Upfront and Near-term Milestone Payments Receivable, Upon Closing                     $ 240,000,000  
The 2029 Notes [Member]                        
Debt Instrument, Maturity Date       Jun. 15, 2029                
Repurchase Obligation, Original Debt Amount                 $ 16,000,000      
Senior Notes, Repurchase Obligation, Net, Current     31,300,000   31,300,000   31,300,000   31,300,000      
Interest Payable                 100,000      
Gain (Loss) on Extinguishment of Debt         (1,896,000) 0 (1,896,000) 0        
Senior Notes, Repurchase Obligation, Net, Fair Value     31,259,000   31,259,000   31,259,000   $ 30,600,000 0    
Derecognition of Embedded Derivative Liability         16,700,000              
Embedded Derivative, Fair Value of Embedded Derivative, Net [1]     $ (55,216,000)   $ (55,216,000)   $ (55,216,000)     (157,171,000)    
Debt Instrument, Convertible, Period After Conversion Date for Interest Payment       18 months                
Debt Instrument, Convertible, Conversion Ratio       161.81                
Debt Instrument, Convertible Debt, Denominator Amount       $ 1,000                
Debt Instrument, Convertible, Conversion Price | $ / shares       $ 6.18                
Debt Instrument, Convertible, Number of Equity Instruments       11,500,000                
Debt Instrument, Interest Rate, Stated Percentage       9.50%                
Debt Instrument, Interest Rate, Effective Percentage     1.86%   1.86%   1.86%          
Debt Instrument, Convertible, Trading Days Before Maturity       50 days                
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger       130.00%                
Debt Instrument, Convertible, Threshold Trading Days       20                
Debt Instrument, Convertible, Threshold Consecutive Trading Days       30                
The 2029 Notes [Member] | Conversion Option Derivative [Member]                        
Embedded Derivative, Fair Value of Embedded Derivative, Net     $ (55,200,000)   $ (55,200,000)   $ (55,200,000)     $ (157,200,000)    
Unrealized Gain (Loss) on Derivatives         11,400,000   84,600,000          
The 2029 Notes [Member] | Subsequent Event [Member]                        
Repurchase Obligation, Original Debt Amount   $ 14,500,000                    
Senior Notes, Repurchase Obligation, Net, Current   28,900,000                    
Interest Payable   100,000                    
Repayments of Medium-Term Note $ 31,300,000                      
Interest Paid, Including Capitalized Interest, Operating and Investing Activities $ 100,000                      
Senior Notes, Current   $ 40,300,000                    
Debt Instrument, Convertible, Number of Equity Instruments   6,500,000                    
The 2029 Notes [Member] | Repurchase Obligations, Net [Member]                        
Liabilities, Fair Value Adjustment     $ 700,000                  
The Credit and Guaranty Agreement [Member] | Initial Term Loan [Member]                        
Debt Instrument, Face Amount                       $ 67,100,000
Convertible Senior Notes 2026 [Member]                        
Debt Instrument, Maturity Date       Feb. 15, 2026                
Gain (Loss) on Extinguishment of Debt         $ 0 $ (2,968,000) $ 0 $ (2,968,000)        
Debt Instrument, Interest Rate, Stated Percentage       5.25%                
Conversion of the 2026 Notes Into 2029 Notes [Member]                        
Debt Conversion, Original Debt, Net Amount       $ 70,800,000                
[1] The fair value of the 2029 Notes embedded derivative is classified as a Level 3 liability due to unobservable inputs in which little or no market data exists. (For further details refer to “Note 4 — Investments and Fair-Value Measurements”).