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Note 8 - Net Income Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

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

		Year Ended December 31,
		2021				2020				2019
Net income (loss)		$	(17,414	)		$	(11,221	)		$	668,629
Weighted-average number of common shares—basic			30,043,380				30,823,458				38,945,468
Net income (loss) per share—basic		$	(0.58	)		$	(0.36	)		$	17.17
Weighted-average number of common shares—diluted			30,043,380				30,823,458				46,319,457
Net income (loss) per share—diluted		$	(0.58	)		$	(0.36	)		$	14.44

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

		Year Ended December 31,
		2021				2020				2019
Stock options			4,656,677				5,327,425				6,965,730
Warrants to purchase common stock			-				-				-
Total			4,656,677				5,327,425				6,965,730

X

- Definition

Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

+ References

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

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