v3.26.1
Note 9 - Prepaid Forward Obligation (Details Textual) - USD ($)
$ in Thousands
 1 Months Ended 6 Months Ended 12 Months Ended
May 31, 2021
Mar. 31, 2021
Jun. 30, 2026
Dec. 31, 2025
Prepaid Forward Agreement, Cumulative Amount Paid and Payable     $ 55,100  
Prepaid Forward Obligation, Current     7,700 $ 3,400
Prepaid Forward Obligation, Amounts Paid, Expected to Decrease Over 12 Months     3,500  
Decrease in Prepaid Forward Obligation, Amounts Paid and Payable [1]     11,192 $ 12,614
RTW Investments [Member]        
Proceeds from Prepaid Forward Obligation $ 75,000 $ 75,000    
Proceeds from Prepaid Forward Arrangement, Net $ 72,400 $ 72,400    
Prepaid Forward Agreement, Minimum Future Cash Flows     $ 200,000  
Prepaid Forward Agreement, Minimum Future Cash Flows, Rate (Rate)     13.00%  
RTW Investments [Member] | Sales of Up to $200 Million [Member] | Jelmyto [Member]        
Prepaid Forward Agreement, Future Cash Payments, Percentage of Net Sales   9.50%    
Prepaid Forward Agreement, Minimum Future Cash Flows   $ 200,000    
Prepaid Forward Agreement, Future Cash Flows, Increase in Percentage of Net Sales   3.50%    
RTW Investments [Member] | Sales Between $200 Million and $300 Million [Member] | Jelmyto [Member]        
Prepaid Forward Agreement, Future Cash Payments, Percentage of Net Sales   3.00%    
RTW Investments [Member] | Sales Over $300 Million [Member] | Jelmyto [Member]        
Prepaid Forward Agreement, Future Cash Payments, Percentage of Net Sales   1.00%    
RTW Investments [Member] | Sales Up to $200 Million with FDA Approval [Member] | UGN-102 [Member]        
Prepaid Forward Agreement, Future Cash Payments, Percentage of Net Sales   2.50%    
RTW Investments [Member] | Sales Between $200 Million and $300 Million with FDA Approval [Member]        
Prepaid Forward Agreement, Future Cash Payments, Percentage of Net Sales   1.00%    
RTW Investments [Member] | Sales Over $300 Million with FDA Approval [Member]        
Prepaid Forward Agreement, Future Cash Payments, Percentage of Net Sales   0.50%    
[1] $7.7 million and $3.4 million were classified as the current portion of the prepaid forward obligation and are included within other current liabilities on the condensed consolidated balance sheets as of June 30, 2026 and December 31, 2025, respectively. The remaining $3.5 million of the $11.2 million of Amounts paid and payable as of June 30, 2026 represents the expected decrease in the carrying amount of the prepaid forward obligation over the next 12 months and is included within other current liabilities on the condensed consolidated balance sheets.