Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following is a summary of Lexicon’s earnings (loss) per share calculations and reconciliations of basic to diluted earnings (loss) per share:

	Year Ended December 31,
(In thousands, except per share amounts)	2020		2019		2018
Numerator:
Net income (loss)	$	(58,574)	$	130,133	$	(120,548)
Add interest expense on Convertible Notes	—		5,067		—
Adjusted net income (loss)	$	(58,574)	$	135,200	$	(120,548)
Denominator:
Shares used in computing net income (loss) per common share, basic	110,841		106,218		105,830
Add effect of potential dilutive securities
Share based awards	—		164		—
Convertible Notes	—		10,365		—
Shares used in computing net income (loss) per common share, diluted	110,841		116,747		105,830
Net income (loss) per share - basic	$	(0.53)	$	1.23	$	(1.14)
Net income (loss) per share - diluted	$	(0.53)	$	1.16	$	(1.14)