Note 10 - Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

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

	Three Months Ended
	March 31,
	2023			2022
Weighted average common shares outstanding:
Basic		146,931			121,328
Dilutive unvested stock, convertible preferred stock, Common Stock Warrants and IPO Warrants		—			—
Diluted		146,931			121,328
Basic and diluted net loss per share attributable to common stockholders	$	(0.23	)	$	(0.14	)

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

	Three Months Ended
	March 31,
	2023		2022
Unvested stock and stock units (1)		2,053		1,347
Convertible preferred stock		52,622		37,671
Common Stock Warrants		1,380		1,452
IPO Warrants (2)		—		12,082
Total potentially dilutive common shares		56,055		52,552