Note 14 - Equity (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Schedule of Common Stock Outstanding Roll Forward [Table Text Block]

	Common Stock
Shares outstanding at December 31, 2019		113,346,472
Shares issued pursuant to payment of stock dividend on Series A Preferred		1,388,876
Shares issued pursuant to payment of stock dividend on Series A-1 Preferred		1,159,416
Shares issued as payment of stock dividend on Series C Preferred		6,455,149
Shares issued pursuant to Series A conversion to Common Stock		18,640,000
Shares issued pursuant to Series A-1 conversion to Common Stock		19,016,452
Shares issued to secure financing facility		2,500,000
Shares issued for cash		15,700,000
Shares issued pursuant to option exchange and RSU vesting		1,883,248
Shares outstanding at December 31, 2020		180,089,613
Shares issued pursuant to payment of stock dividend on Series A Preferred		1,911,587
Shares issued pursuant to payment of stock dividend on Series A-1 Preferred		1,789,587
Shares issued pursuant to Series A conversion to Common Stock		74,562,000
Shares issued pursuant to Series A-1 conversion to Common Stock		73,910,000
Shares issued pursuant to Series D to Common Stock		11,149,123
Shares issued pursuant to warrant exercises		400
Recission of shares previously issued at holder request		(2,817	)
Shares issued to secure financing facility		1,000,000
Shares issued for cash		1,000,000
Shares issued as compensation in lieu of cash		921,218
Shares issued pursuant to option exchange and RSU vesting		902,630
Shares outstanding at December 31, 2021		347,233,341

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

	Warrants			Weighted-Average Exercise Price
Balance at December 31, 2019		1,733,856		$	0.14
Granted		—
Expired / Canceled		(980,081	)	$	0.15
Exercised		—
Balance at December 31, 2020		753,775			0.17
Granted		3,000,000			0.07
Expired / Canceled		(603,375	)		0.01
Exercised		(400	)		0.01
Balance at December 31, 2021		3,150,000			0.10