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Note 7 - Intangible Assets (Tables)

12 Months Ended

Jun. 30, 2025

Notes Tables

Schedule of Finite-Lived Intangible Assets [Table Text Block]

		June 30, 2025
														Weighted-
		Gross								Net				Average
		Carrying				Accumulated				Carrying				Remaining
		Amount				Amortization				Amount				Life (2)
		(in thousands)												(in years)
Product technology rights (1)		$	22,200			$	(5,592	)		$	16,608				12.7
Technology rights			30,200				(7,607	)			22,593				12.7
Commercialization rights			3,000				—				3,000				N/A
Total intangible assets		$	55,400			$	(13,199	)		$	42,201				12.7

		June 30, 2024
														Weighted-
		Gross								Net				Average
		Carrying				Accumulated				Carrying				Remaining
		Amount				Amortization				Amount				Life
		(in thousands)												(in years)
Product technology rights		$	41,268			$	(13,184	)		$	28,084				10.7
Technology rights			30,200				(5,831	)			24,369				13.8
Total intangible assets		$	71,468			$	(19,015	)		$	52,453				12.0

Finite-Lived Intangible Assets Amortization Expense [Table Text Block]

​		Year Ended
​		June 30,
​		2025				2024
​		(in thousands)
Statement of operations classification:
Cost of goods sold		$	1,306			$	1,306
Operating expenses			3,683				3,683
Total amortization of intangible assets expense		$	4,989			$	4,989

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

		June 30,
		(in thousands)
2026		$	3,489
2027			3,692
2028			3,692
2029			3,692
2030			3,692
Thereafter			23,944
Total estimated future amortization expense		$	42,201

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