Note 14 - Net Loss Per Share (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2024

Dec. 31, 2023

Notes Tables

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

	Three months ended March 31,
	2024			2023
Numerator:
Net loss attributable to common stockholders	$	(10,219	)	$	(26,265	)
Denominator:
Weighted average common shares outstanding- Basic		6,352,835			5,528,862
Weighted average common shares outstanding- Diluted		6,352,835			5,528,862
Net loss per share attributable to common stockholders - Basic and Diluted	$	(1.61	)	$	(4.75	)

	Twelve months ended December 31,
	2023			2022
Numerator:
Net loss attributable to common stockholders	$	(87,126	)	$	(98,714	)
Denominator:
Weighted average common shares outstanding- Basic		5,827,721			5,245,624
Dilutive effect of potential common shares		—			—
Weighted average common shares outstanding- Diluted		5,827,721			5,245,624
Net loss per share attributable to common stockholders - Basic and Diluted	$	(14.95	)	$	(18.82	)

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

	Three months ended March 31, 2024
	2024		2023
Common stock options issued and outstanding		205,910		681,584
Unvested restricted stock units		494,216		625,786
Warrants		319,443		319,443
Common Stock Purchase Agreement		842,180		990,681
Conversion of convertible notes		—		569,328
ESPP		33,655		67,586
Total		1,895,404		3,254,408

	Twelve months ended December 31,
	2023		2022
Warrants		319,443		319,443
Common stock options issued and outstanding		289,015		846,451
Unvested restricted stock units		652,453		425,703
Conversion of convertible notes		—		543,120
ESPP		23,816		66,666
Total		1,284,727		2,201,383