Note 10 - Common Stock Incentive, Stock Purchase Plans, and Other Compensation Plans (Tables)

12 Months Ended

Jun. 30, 2022

Notes Tables

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

				Weighted
	Shares			Average
	(In thousands)			Exercise Price
Outstanding at June 30, 2020		325		$	5.68
Granted		50			5.00
Exercised		—			—
Canceled or expired		(100	)		6.49
Outstanding at June 30, 2021		275		$	5.25
Granted		876			0.64
Exercised		—			—
Canceled or expired		(122	)		4.96
Outstanding at June 30, 2022		1,029		$	1.35

Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

			Options
			Outstanding						Options
			Weighted-						Exercisable
			Average		Weighted-				Weighted-
	Number		Remaining		Average		Number		Average
	Outstanding		Contractual		Exercise		Exercisable		Exercise
Range of exercise prices	(In thousands)		Life (years)		Price		(In thousands)		Price
$0.64 – $2.83		889		9.75	$	0.66		9	$	2.15
$5.30 – $5.85		88		4.86		5.55		88		5.55
$6.00 – $6.00		52		0.14		6.00		52		6.00
$0.64 – $6.00		1,029		8.84	$	1.35		149	$	5.49

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

				Weighted
				Average
	Shares			Grant-Date
	(In thousands)			Fair Value
Outstanding at June 30, 2020		133		$	3.95
Granted		2,019			2.02
Vested		(58	)		1.84
Canceled or expired		(71	)		3.57
Outstanding at June 30, 2021		2,023		$	2.05
Granted		1,200			0.63
Vested		(693	)		2.08
Canceled or expired		(254	)		2.02
Outstanding at June 30, 2022		2,276		$	1.30

Schedule of Share-Based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]

	Year Ended			Year Ended
	June 30, 2022			June 30, 2021
Expected dividend yield		—			—
Expected volatility		104.97	%		106.29	%
Risk-free interest rates		0.65	%		1.45	%
Expected option life (in years)		3.5			3.5
Weighted-average grant-date fair value of options awarded	$	0.86		$	2.40