NET INCOME PER SHARE (Tables)

12 Months Ended

Dec. 31, 2018

NET INCOME PER SHARE

Schedule of computation of basic and diluted net income per share

	Year Ended December 31,
(In thousands except per share data)	2018		2017			2016
Numerator:
Net income attributable to Innoviva stockholders, basic	$	395,056	$	134,143	$	59,536
Add: interest expense on 2023 Notes		5,661		5,647		5,790
Net income attributable to Innoviva stockholders, diluted	$	400,717	$	139,790	$	65,326
Denominator:
Weighted-average shares used to compute basic net income per share attributable to Innoviva stockholders		100,849		106,945		110,280
Dilutive effect of  2023 Notes		12,189		12,189		12,541
Dilutive effect of options and awards granted under equity incentive plan and employee stock purchase plan		370		732		412
Weighted-average shares used to compute diluted net income per share attributable to Innoviva stockholders		113,408		119,866		123,233
Net income per share attributable to Innoviva stockholders
Basic	$	3.92	$	1.25	$	0.54
Diluted	$	3.53	$	1.17	$	0.53

Schedule of anti-dilutive securities

	Year Ended December 31,
(In thousands)	2018	2017	2016
Outstanding options and awards granted under equity incentive plan and employee stock purchase plan	1,490	2,121	4,073