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

9 Months Ended

Sep. 30, 2023

Notes Tables

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

	As of
	September 30,
	2023		2022
Unvested restricted stock		8,454,545		10,901,797
Options		4,697,029		5,153,737
Warrants		312,272		262,100
Shares issuable upon note conversion		20,646		20,135
Total		13,484,492		16,337,769

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

	Three months ended		Nine months ended
​	September 30,		September 30,
(in thousands, except share and per share data)	2023	2022	2023	2022
Net income (loss)	113,930	(35,818)	27,088	(145,341)
Weighted-average common shares outstanding	142,871,227	135,327,035	141,571,785	134,839,207
Dilutive effect of potential common shares	13,000,522	-	4,381,128	-
Weighted-average common shares outstanding assuming dilution	155,871,749	135,327,035	145,952,913	134,839,207
Net income (loss) per share - basic	0.80	(0.26)	0.19	(1.08)
Net income (loss) per share - diluted	0.73	(0.26)	0.19	(1.08)