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Note 15 - Equity Incentive Plan (Tables)

12 Months Ended

Jun. 30, 2025

Notes Tables

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

										Weighted-
										Average
						Weighted-				Remaining
		Number of				Average				Contractual
		Options				Exercise Price				Life in Years
Outstanding at June 30, 2024			146,539			$	6.18				8.8
Granted			87,500			$	1.83				8.3
Forfeited/cancelled			(17,343	)		$	1.87				—
Expired			(5,078	)		$	15.46				—
Outstanding at June 30, 2025			211,618			$	4.51				8.3
Exercisable at June 30, 2025			100,195			$	7.44				7.4

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

											Weighted-
											Average
											Remaining
							Weighted-				Contractual
Range of			Number of				Average				Life of				Number of				Weighted-
Exercise			Options				Exercise				Options				Options				Average
Prices			Outstanding				Price				Outstanding				Exercisable				Exercise Price
$1.69				3,000			$	1.69				9.6				—			$	—
$1.73				87,453			$	1.73				8.0				59,901			$	1.73
$1.84				79,000			$	1.84				9.4				2,500			$	1.84
$2.53 - $290.00				42,165			$	15.49				6.6				37,794			$	15.49
				211,618			$	4.51				8.3				100,195			$	7.44

Nonvested Restricted Stock Shares Activity [Table Text Block]

						Weighted-
						Average Grant
		Number of				Date Fair
		Shares				Value
Unvested at June 30, 2024			24,105			$	100.34
Granted			20,000			$	1.79
Vested			(11,193	)		$	14.02
Unvested at June 30, 2025			32,912			$	69.81

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

						Weighted-
						Average Grant
		Number of				Date Fair
		Shares				Value
Unvested at June 30, 2024			1,775			$	24.14
Vested			(1,608	)		$	23.93
Forfeited/cancelled			(167	)		$	26.20
Unvested at June 30, 2025			—			$	—

Share-Based Payment Arrangement, Cost by Plan [Table Text Block]

		Year Ended
		June 30,
		2025				2024
		(in thousands)
Cost of goods sold		$	2			$	2
Research and development			11				6
Selling and marketing			61				—
General and administrative			502				2,365
Net income (loss) from discontinued operations, net of tax			—				540
Total stock-based compensation expense		$	576			$	2,913

X

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Tabular disclosure of the changes in outstanding nonvested restricted stock shares.

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