Note 18 - Commitments and Contingencies (Details Textual)		12 Months Ended
	Jun. 21, 2021 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	May 31, 2023 USD ($)	Feb. 22, 2023 shares	May 29, 2020 USD ($)	Jan. 31, 2020 USD ($)	Nov. 01, 2019 USD ($)	Feb. 28, 2015
Fixed Payment Arrangements		$ 8,337,000	$ 10,420,000
Sabby Volatility Warrant Master Fund Ltd. [Member] | Sabby Litigation [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares					312,908
Sabby Volatility Warrant Master Fund Ltd. [Member] | Sabby Litigation [Member] | Sabby Litigation Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares					575,000
Walleye Opportunities Master Fund Ltd. [Member] | Sabby Litigation [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares					54,146
Walleye Opportunities Master Fund Ltd. [Member] | Sabby Litigation [Member] | Sabby Litigation Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares					100,000
Office Space in Berwyn, Pennsylvania [Member]
Lessee, Operating Lease, Renewal Term (Year)		5 years
Operating Lease, Undiscounted Minimum Monthly Payment		$ 13,000
Principal Office Denver Colorado [Member]
Lessee, Operating Lease, Renewal Term (Year)				5 years
Operating Lease, Undiscounted Minimum Monthly Payment				$ 15,500
Lessee, Operating Lease, Term of Contract (Year)				5 years 6 months					5 years
Tris Karbinal Agreement [Member]
Supply and Distribution Commitment, Period (Year)		20 years
Supply and Distribution Commitment, Royalty, Percentage of Net Sales		23.50%
Supply and Distribution Agreement, Minimum Sales Per Year		70,000
Supply and Distribution Agreement, Royalty Make Whole Payment Under Annual Minimum Sales Commitment, Per Unit		$ 30
Supply and Distribution Agreement, Maximum Milestone Obligations		3,000,000
Supply and Distribution Agreement, First Milestone, Minimum Net Revenues		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		200,000
Tris Karbinal Agreement [Member] | Maximum [Member]
Supply and Distribution Agreement, Royalty Make Whole Payment Under Annual Minimum Sales Commitment, Per Unit		2,100
Fixed Payment Arrangement Assumed from Cerecor Inc. [Member]
Fixed Payment Arrangements, Periodic Payment Obligations, Number								2
Fixed Payment Arrangements, Monthly Payment Amount								$ 100,000
Fixed Payment Arrangements, Balloon Payment Amount						$ 15,000,000		$ 15,000,000
Fixed Payment Arrangements, Payment Amount, Paid	$ 2,800,000
Fixed Payment Arrangements	3,000,000
Fixed Payment Arrangement, Quarterly Payments	$ 500,000
Fixed Payment Arrangement Assumed from Cerecor Inc. [Member] | The Pediatric Portfolio [Member]
Fixed Payment Arrangements, Balloon Payment Amount		$ 100,000					$ 200,000