Note 1 - Organization and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2024

Notes Tables

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	December 31,
	2024		2023		2022
Unvested restricted stock		10,343,555		8,139,037		7,232,254
Options		4,470,216		4,697,029		5,135,685
Warrants		165,214		312,272		262,100
Shares issuable upon note conversion		21,973		20,902		20,619
Total		15,000,958		13,169,240		12,650,658

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Year ended
	December 31,
(in thousands, except share and per share data)	2024		2023		2022
Net income (loss)		23,383		12,672		(223,812	)
Weighted-average common shares outstanding		145,317,418		141,955,112		135,411,258
Dilutive effect of potential common shares		15,018,633		6,553,353		-
Weighted-average common shares outstanding assuming dilution		160,336,051		148,508,465		135,411,258
Net income (loss) per share - basic		0.16		0.09		(1.65	)
Net income (loss) per share - diluted		0.15		0.09		(1.65	)