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Intangible Assets - Gross carrying value and accumulated amortization (Details) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Jun. 30, 2025
Indefinite-lived intangible assets          
Impairments     $ (5,003,000)   $ 0
Total net intangibles          
Total net intangibles $ 1,830,000   1,830,000   6,848,000
Amortization of intangible assets (5,000) $ (5,000) (15,000) $ (15,000)  
Intellectual property          
Indefinite-lived intangible assets          
Indefinite lived 0   0   5,003,000
Impairments     (5,003,000)    
Licenses          
Indefinite-lived intangible assets          
Indefinite lived 1,500,000   1,500,000   1,500,000
Intellectual Property          
Definite-lived intangible assets          
Gross carrying value 400,000   400,000   400,000
Accumulated amortization (70,000)   (70,000)   (55,000)
Total definite lived intangible assets $ 330,000   330,000   $ 345,000
Total net intangibles          
Amortization of intangible assets     $ (15,000)