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Note 7 - Stockholders' Equity (Deficit) (Tables)

6 Months Ended

Jun. 30, 2025

Notes Tables

Schedule of Stock by Class [Table Text Block]

														Original				Shares												Shares				Conversion					Shares
		Shares				Gross				Net				Conversion				Outstanding				Series F				Series F				Outstanding				Price at					Issuable at
Date of Purchase		Purchased				Proceeds				Proceeds				Price				December 31, 2024				Issued				Converted				June 30, 2025				June 30, 2025					June 30, 2025
November 15, 2023			1,850			$	1,850,000			$	1,850,000			$	124.70				150				—				—				150			$	0.83		(ii)			180,854
March 6, 2024			1,000				1,000,000				950,000				60.29				435				—				(335	)			100				0.83		(ii)			120,569
April 12, 2024			1,050				1,050,000				1,050,000				37.00				1,050				—				(1,050	)			—				0.83					—
May 31, 2024			1,050				1,050,000				1,025,000				32.15				1,050				—				(525	)			525				0.83		(ii)			632,988
July 25, 2024			500				500,000				500,000				23.15				500				—				(500	)			—				0.83					—
August 27, 2024			500				500,000				500,000				20.19				500				—				(500	)			—				0.83					—
October 1, 2024 (i)			1,500				—				—				12.00				1,500				—				(1,500	)			—				0.83					—
December 18, 2024			750				750,000				750,000				5.25				750				—				(750	)			—				0.83					—
February 7, 2025			1,000				1,000,000				1,000,000				2.22				—				1,000				(1,000	)			—				0.83					—
March 17, 2025			500				500,000				500,000				1.20				—				500				(500	)			—				0.83					—
May 5, 2025			500				500,000				500,000				0.83				—				500				(500	)			—				0.83					—
June 6, 2025			500				500,000				500,000				1.19				—				500				—				500				1.19					418,831
June 9, 2025			1,000				1,000,000				1,000,000				1.19				—				1,000				(600	)			400				1.19					335,345
June 17, 2025			1,000				1,000,000				1,000,000				1.25				—				1,000				—				1,000				1.25					797,067
Total June 30, 2025			12,700			$	11,200,000			$	11,125,000			$	—				5,935				4,500				(7,760	)			2,675			$	—					2,485,654

														Original				Shares												Shares				Conversion				Shares
		Shares				Gross				Net				Conversion				Outstanding				Series F				Series F				Outstanding				Price at				Issuable at
Date of Purchase		Purchased				Proceeds				Proceeds				Price				December 31, 2023				Issued				Converted				June 30, 2024				June 30, 2024				June 30, 2024
June 26, 2022			10,000			$	10,000,000			$	9,920,000			$	620				2,925								(2,925	)			—			$	30.00				—
March 10, 2023			3,000				3,000,000				3,000,000				420.00				3,000								(1,405	)			1,595				30.00				53,167
November 15, 2023			1,850				1,850,000				1,850,000				124.70				150								—				150				30.00				5,000
March 6, 2024			1,000				1,000,000				950,000				60.29				—				1,000				(550	)			450				30.00				15,000
April 12, 2024			1,050				1,050,000				1,050,000				37.00				—				1,050				—				1,050				30.00				35,000
May 31, 2024			1,050				1,050,000				1,025,000				32.15				—				1,050				—				1,050				30.00				35,000
Total June 30, 2024			17,950			$	17,950,000			$	17,795,000			$	—				6,075				3,100				(4,880	)			4,295			$	—				143,167

Schedule of Dividends Payable [Table Text Block]

Deemed Dividends on Series F Preferred Stock
		Description of		Series F				Conversion Prices				Conversion Price				Incremental Value
Date of Trigger Event		Trigger Event		Triggered				Prior to Trigger				After Trigger				Deemed Dividend
March 17, 2025		March 2025 Down Round Trigger			5,025			$	2.22 - 5.25			$	1.20			$	976,637
May 5, 2025		May 2025 Down Round Trigger			1,045,402			$	1.10			$	0.83				1,105,871
		Deemed Dividends on Series F Preferred Stock														$	2,082,508
Deemed Dividends on Series F Warrants
March 17, 2025		March 2025 Down Round Trigger			593,247			$	2.22 - 5.25			$	1.20			$	79,695
May 5, 2025		May 2025 Down Round Trigger			593,247			$	1.10			$	0.83				36,504
		Deemed Dividends on Series F Warrants														$	116,199
Deemed Dividends on Series B Warrants (see Note 8)
May 5, 2025		May 2025 Down Round Trigger			6,777,101			$	1.94			$	0.83				2,426,968
		Deemed Dividends on Series B Warrants														$	2,426,968
		Total Deemed Dividends Series F PS, Series B and F Warrants														$	4,625,675

Deemed Dividends on Series F Preferred Stock
	Description of	Series F		Conversion Prices		Conversion Price		Incremental Value
Date of Trigger Event	Trigger Event	Triggered		Prior to Trigger		After Trigger		Deemed Dividend
March 6, 2024	March 2024 Down Round Trigger		3,945	$	60.29 - 124.50	$	30.00	$	5,102,674
Deemed Dividends on Series F Warrants
`	March 2024 Down Round Trigger		54,695	$	60.29 - 124.50	$	30.00	$	147,030
Total Deemed Dividends Series F PS and Series F Warrants								$	5,249,704
Warrant Modification (i)									7,751
Total Deemed Dividends								$	5,257,455

Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]

						Weighted Average
						Grant Date
		Shares				Fair Value
Outstanding as of December 31, 2024			7,293			$	324.64
Granted			142,730				1.54
Cancelled			(1,158	)			284.01
Vested			(78,825	)			5.07
Outstanding as of June 30, 2025			70,040				26.58
Vested as of June 30, 2025			1,243				1,363.11
Unvested as of June 30, 2025			68,797			$	2.43

						Weighted Average
						Grant Date
		Shares				Fair Value
Outstanding as of December 31, 2023			3,054			$	901.50
Granted			901				26.00
Cancelled			(20	)			483.00
Vested and released			(687	)			15.06
Outstanding as of June 30, 2024			3,249				709.00
Vested as of June 30, 2024			2,701				820.00
Unvested as of June 30, 2024			548			$	162.00

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

														Weighted Average
														Remaining				Aggregate
						Weighted Average				Weighted Average				Contractual Term				Intrinsic
		Shares				Exercise Price				Fair Value				(Years)				Value
Outstanding as of December 31, 2024			56			$	5,342			$	2,874				1.23			$	—
Granted			—				—				—				—				—
Exercised			—				—				—				—				—
Expired/Forfeited			(56	)			5,342				2,874				—				—
Outstanding as of June 30, 2025			—			$	—			$	—				—			$	—
Exercisable as of June 30, 2025			—			$	—			$	—				—			$	—

														Weighted Average
														Remaining				Aggregate
						Weighted Average				Weighted Average				Contractual Term				Intrinsic
		Shares				Exercise Price				Fair Value				(Years)				Value
Outstanding as of December 31, 2023			2,505			$	2,000			$	1,080.00				1.49			$	2,294
Granted			—				—				—				—				—
Exercised			—				—				—				—				—
Expired/Forfeited			(2,440	)			1,921				1,044				—				—
Outstanding as of June 30, 2024			65			$	6,038			$	3,246				1.49			$	—
Exercisable as of June 30, 2024			65			$	6,038			$	3,246				1.49			$	—

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