Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2019

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)	2019		2018		2017
Numerator:
Net income (loss)	$	130,133	$	(120,548)	$	(122,993)
Add interest expense on Convertible Notes	5,067		—		—
Adjusted net income (loss)	$	135,200	$	(120,548)	$	(122,993)
Denominator:
Shares used in computing net income (loss) per common share, basic	106,218		105,830		105,237
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	116,747		105,830		105,237
Net income (loss) per share - basic	$	1.23	$	(1.14)	$	(1.17)
Net income (loss) per share - diluted	$	1.16	$	(1.14)	$	(1.17)