v3.26.1
Note 15 - Shareholders' Equity (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended
Jan. 24, 2025
Jul. 18, 2024
Jun. 20, 2024
Jun. 17, 2024
Dec. 20, 2023
Jul. 26, 2023
Dec. 31, 2025
Sep. 30, 2025
Sep. 30, 2024
Mar. 31, 2024
Mar. 31, 2026
Nov. 30, 2025
Dec. 31, 2019
Common Stock, Shares Authorized (in shares)             100,000,000       100,000,000    
Common Stock, Shares, Outstanding (in shares)             48,350,272       48,708,280    
Proceeds from Issuance of Private Placement           $ 120.0              
Common Stock, Shares, Issued (in shares)             48,350,272       48,708,280    
Conversion of Prefunded Warrants Into Ordinary Shares [Member]                          
Conversion of Stock, Shares Issued (in shares) 3,206,271       1,599,733                
Conversion of Stock, Shares Converted (in shares) 3,206,271       1,599,840                
Pre-funded Warrant [Member]                          
Class of Warrant or Right, Outstanding (in shares)           5,278,776         472,665    
Class of Warrants or Rights, Issuance Price Per Share (in dollars per share)           $ 9.539              
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)           $ 0.001              
Prefunded Warrants Associated With Public Offering [Member]                          
Class of Warrant or Right, Outstanding (in shares)       1,142,857             1,142,857    
Class of Warrants or Rights, Issuance Price Per Share (in dollars per share)       $ 17.499                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)     $ 0.001                    
ATM Sales Agreement [Member]                          
Sale of Stock, Maximum Authorize Amount                         $ 100.0
Stock Issued During Period, Shares, New Issues (in shares)               416,248   3,400,468      
Net Proceeds From Issuance of Common Stock, After Deducting Sales Commissions               $ 8.0   $ 54.7      
ATM Sales Agreement [Member] | Maximum [Member]                          
Stock Issued During Period, New Issues, Sales Commission Percentage               3.00% 3.00%        
ATM Prospectus [Member]                          
Sale of Stock, Maximum Authorize Amount                       $ 75.0  
Stock Issued During Period, Shares, New Issues (in shares)             1,370,962            
Net Proceeds From Issuance of Common Stock, After Deducting Sales Commissions             $ 31.8            
Sale of Stock, Remaining Amount Authorized                     $ 42.4    
ATM Prospectus [Member] | Maximum [Member]                          
Stock Issued During Period, New Issues, Sales Commission Percentage             3.00%            
Private Placement [Member]                          
Stock Issued During Period, Shares, New Issues (in shares)           7,300,380              
Shares Issued, Price Per Share (in dollars per share)           $ 9.54              
Placement Agents and Financial Advisors Fees           $ 3.6              
Private Placement [Member] | Monograph Capital Partners [Member]                          
Stock Issued During Period, Shares, New Issues (in shares)           1,572,327              
Proceeds from Issuance of Private Placement           $ 15.0              
Underwritten Public Offering [Member]                          
Stock Issued During Period, Shares, New Issues (in shares)       5,000,000                  
Shares Issued, Price Per Share (in dollars per share)       $ 17.5                  
Proceeds from Issuance or Sale of Equity     $ 107.5                    
Payments of Stock Issuance Costs     $ 7.3                    
Over-Allotment Option [Member]                          
Stock Issued During Period, Shares, New Issues (in shares)   921,428                      
Proceeds from Issuance or Sale of Equity   $ 16.1                      
Payments of Stock Issuance Costs   $ 1.0                      
Equity Sale, Shares Issuable (in shares)     921,428