Note 9 - Other Liabilities (Details Textual)		8 Months Ended	9 Months Ended
	May 12, 2022 USD ($)	Mar. 01, 2024 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)
Fixed Payment Arrangements			$ 8,695,000		$ 10,420,000
Employee Retention Credit			$ 3,759,000	$ 3,800,000	$ 0
Tris Karbinal Agreement [Member]
Supply and Distribution Commitment, Period (Year)		20 years	20 years
Supply and Distribution Commitment, Royalty, Percentage of Net Sales		23.50%	23.50%
Supply and Distribution Agreement, Minimum Sales Per Year		70,000	70,000
Supply and Distribution Agreement, Make-whole Payment Per Unit for Sales Under Minimum		$ 30	$ 30
Supply and Distribution Agreement, Maximum Yearly Make-whole Payment		2,100,000	2,100,000
Supply and Distribution Agreement, Maximum Milestone Obligations		3,000,000	3,000,000
Supply and Distribution Agreement, First Milestone, Minimum Net Revenues		$ 40,000,000	40,000,000
Tris Karbinal Agreement [Member] | Other Current Liabilities [Member]
Fixed Payment Arrangements			1,900,000
Tris Karbinal Agreement [Member] | Other Noncurrent Liabilities [Member]
Fixed Payment Arrangements			700,000
Tris License Agreement [Member]
Fixed Payment Arrangements	$ 9,000,000
Fixed Payment Arrangements, Liability, Reduction	$ 8,000,000
Tris License Agreement [Member] | Other Current Liabilities [Member]
Fixed Payment Arrangements			$ 6,100,000