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Note 7 - Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)
Sep. 30, 2025
Jun. 30, 2025
Finite-lived intangible assets, gross $ 55,400,000 $ 55,400,000
Finite-lived intangible assets, amortization (13,970,000) (13,199,000)
Finite-lived intangible assets, net $ 41,430,000 $ 42,201,000
Weighted Average [Member]    
Finite-lived intangible assets, remaining life (Year) 12 years 6 months 12 years 8 months 12 days
Technology-Based Intangible Assets [Member]    
Finite-lived intangible assets, gross $ 22,200,000 $ 22,200,000 [1]
Finite-lived intangible assets, amortization (5,919,000) (5,592,000) [1]
Finite-lived intangible assets, net $ 16,281,000 $ 16,608,000 [1]
Technology-Based Intangible Assets [Member] | Weighted Average [Member]    
Finite-lived intangible assets, remaining life (Year) 12 years 6 months 12 years 8 months 12 days [1]
Developed Technology Rights [Member]    
Finite-lived intangible assets, gross $ 30,200,000 $ 30,200,000
Finite-lived intangible assets, amortization (8,051,000) (7,607,000)
Finite-lived intangible assets, net $ 22,149,000 $ 22,593,000
Developed Technology Rights [Member] | Weighted Average [Member]    
Finite-lived intangible assets, remaining life (Year) 12 years 6 months 12 years 8 months 12 days
Commercialization Rights [Member]    
Finite-lived intangible assets, gross [2] $ 3,000,000 $ 3,000
Finite-lived intangible assets, amortization [2] 0 0
Finite-lived intangible assets, net [2] $ 3,000,000 $ 3,000
[1] In June 2025, the Company recorded an impairment to its product technology rights intangible asset of $8.3 million. Accordingly, $19.1 million of gross carrying amount and $10.8 million of related accumulated amortization have been removed from this table as of June 30, 2025.
[2] The commercialization rights intangible asset will be considered placed in service upon the launch of EXXUA, which the Company currently anticipates launching in the second fiscal quarter of 2026 with an initial estimated useful life through September 2030.