v3.26.1
Note 7 - Debt (Details Textual)
3 Months Ended 48 Months Ended
Apr. 01, 2025
USD ($)
shares
Jul. 17, 2024
USD ($)
Jan. 09, 2024
USD ($)
$ / shares
Mar. 31, 2026
USD ($)
TradingDays
$ / shares
Mar. 31, 2023
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2025
USD ($)
Jan. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Feb. 28, 2019
USD ($)
Jan. 31, 2013
USD ($)
Line of Credit Facility [Line Items]                      
Debt Instrument, Face Amount                     $ 175,000,000
Debt Instrument, Interest Rate, Stated Percentage                     3.00%
Stock Repurchased During Period, Value     $ 50,000,000 $ 4,767,000              
Shares Acquired, Average Cost Per Share (in dollars per share) | $ / shares     $ 0.9067 $ 1.21              
Debt Instrument, Repurchase Amount                   $ 28,800,000  
Debt Instrument, Redemption Price, Percentage       100.00%              
Debt Conversion, Converted Instrument, Amount           $ 143,200,000          
Repayments of Debt         $ 3,000,000            
Long-Term Debt       $ 345,675,000     $ 343,966,000   $ 50,600    
Line of Credit [Member]                      
Line of Credit Facility [Line Items]                      
Debt, Weighted Average Interest Rate       5.50%     5.50%        
Minimum [Member]                      
Line of Credit Facility [Line Items]                      
Long-Term Debt, Percentage Bearing Variable Interest, Percentage Rate       0.90%              
Maximum [Member]                      
Line of Credit Facility [Line Items]                      
Long-Term Debt, Percentage Bearing Variable Interest, Percentage Rate       2.80%              
Affiliate Purchasers [Member]                      
Line of Credit Facility [Line Items]                      
Debt Instrument, Interest Rate, Stated Percentage     5.00%                
Debt Instrument, Repurchase Amount     $ 55,000,000                
Interest Payable     16,100,000                
Note Exchange Transactions [Member]                      
Line of Credit Facility [Line Items]                      
Proceeds from Convertible Debt $ 63,500,000                    
Debt Conversion, Original Debt, Amount $ 159,200,000                    
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares 121,437,998                    
Gain (Loss) on Extinguishment of Debt $ 59,100,000                    
Induced Conversion of Convertible Debt Expense 32,600,000                    
Debt Instrument, Unamortized Discount, Total 54,700,000                    
Debt Issuance Costs, Net, Total $ 4,400,000                    
2044 Royalty Financing                      
Line of Credit Facility [Line Items]                      
Debt Instrument, Face Amount   $ 250,000,000                  
Debt Instrument, Basis Spread on Variable Rate   7.50%                  
Debt Instrument, Repayment Fee, Percent   3.00%                  
Debt Instrument, Early Extinguishment, Percent of Principal Amount   150.00%                  
Debt Instrument, Repayment Fee, Royalty Percentage   80.00%                  
Debt Instrument, Additional Authorized Amount   $ 50,000,000,000,000                  
Long-Term Debt       $ 246,643,000     $ 246,433,000        
2044 Royalty Financing | Debt Principal Amount After July 17, 2029 [Member]                      
Line of Credit Facility [Line Items]                      
Debt Instrument, Early Extinguishment, Percent of Principal Amount   200.00%                  
2044 Royalty Financing | Minimum [Member]                      
Line of Credit Facility [Line Items]                      
Debt Instrument, Basis Spread on Variable Rate   4.00%                  
The 2029 Convertible Notes 1 [Member]                      
Line of Credit Facility [Line Items]                      
Debt Instrument, Face Amount     $ 230,000,000                
Debt Instrument, Interest Rate, Stated Percentage     3.75%                
Proceeds from Convertible Debt     $ 222,000,000                
Embedded Derivative, Fair Value of Embedded Derivative Liability     125,600,000                
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net     $ 26,250,000                
Debt Instrument, Convertible, Conversion Ratio     869.5652                
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares     $ 1.15                
The 2029 Convertible Notes 1 [Member] | Scenario, Event of Default [Member]                      
Line of Credit Facility [Line Items]                      
Debt Instrument, Redemption Price, Percentage     100.00%                
Debt Instrument, Ownership Interest     25.00%                
The 2029 Convertible Notes 1 [Member] | Debt Instrument, Redemption, Period One [Member]                      
Line of Credit Facility [Line Items]                      
Debt Instrument, Convertible, Threshold Trading Days | TradingDays       20              
Debt Instrument, Convertible, Threshold Consecutive Trading Days | TradingDays       30              
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger       130.00%              
The 2029 Convertible Notes 1 [Member] | Debt Instrument, Redemption, Period Two [Member]                      
Line of Credit Facility [Line Items]                      
Debt Instrument, Convertible, Threshold Trading Days | TradingDays       5              
Debt Instrument, Convertible, Threshold Consecutive Trading Days | TradingDays       10              
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger       98.00%              
The 2029 Convertible Affiliate Notes [Member]                      
Line of Credit Facility [Line Items]                      
Debt Instrument, Face Amount     $ 71,100,000                
Debt Instrument, Interest Rate, Stated Percentage     3.75%                
The 2023 Convertible Notes [Member]                      
Line of Credit Facility [Line Items]                      
Interest Payable               $ 16,100,000      
The 2023 Convertible Notes [Member] | Convertible Debt [Member]                      
Line of Credit Facility [Line Items]                      
Debt Instrument, Face Amount               $ 55,000,000      
The 2033 Senior Notes [Member]                      
Line of Credit Facility [Line Items]                      
Long-Term Debt       $ 50,000     $ 50,000        
Notes and Other Debt [Member]                      
Line of Credit Facility [Line Items]                      
Debt, Weighted Average Interest Rate       2.00%     1.80%