Note 8 - Stockholders' Equity (Tables)

12 Months Ended

Jun. 30, 2024

Notes Tables

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

	Shares		Weighted Average Exercise		Aggregate Fair Market Value at Issuance		Weighted Average Remaining Contractual Life
	(In thousands)		Price		(In thousands)		(in years)
Outstanding at June 30, 2022		80	$	72.10	$	3,747		3.60
Issued		—		—		—		—
Exercised		—		—		—		—
Canceled or expired		—		—		—		—
Outstanding at June 30, 2023		80	$	72.10	$	3,747		2.60
Issued		—		—		—		—
Exercised		—		—		—		—
Canceled or expired		—		—		—		—
Outstanding at June 30, 2024		80	$	72.10	$	3,747		1.60

					Number of Shares Underlying
					Warrants
					(In thousands)
					For the period ended June 30,
Issue Date	Classification	Exercise Price		Expiration Date	2024		2023
March 26, 2020	Equity	$	187.50	March 25, 2025		1		1
March 30, 2020	Equity	$	140.63	March 27, 2025		2		2
October 23, 2020	Equity	$	86.25	October 21, 2025		15		15
October 28, 2020	Equity	$	80.63	October 28, 2025		6		6
February 16, 2021	Equity	$	121.88	February 11, 2026		6		6
April 12, 2021	Equity	$	56.25	April 7, 2026		50		50
Total Outstanding						80		80