Note 7 - Intangible Assets (Details Textual) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2024	Mar. 31, 2023
Amortization Expense of Intangible Assets	$ 1.6		$ 1.5		$ 4.9	$ 4.6
Patented Technology [Member] | ADHD Portfolio [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	17 years				17 years
Distribution Rights [Member] | Consumer Health [Member]
Impairment of Intangible Assets, Finite-Lived		$ 3.0
In Process Research and Development [Member] | Rx Segment [Member] | Neos Therapeutics, Inc. [Member]
Impairment of Intangible Assets, Finite-Lived				$ 2.6
Tris Karbinal Agreement [Member]
Supply and Distribution Agreement, Extension Term (Year)					20 years
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life, Renewable Period (Year)					1 year
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life, Renewable Period (Year)					20 years