NET INCOME (LOSS) PER SHARE (Tables)

12 Months Ended

Dec. 31, 2017

NET INCOME (LOSS) PER SHARE

Schedule of computation of basic and diluted net income (loss) per share

	Year Ended December 31,
(In thousands except per share data)	2017		2016		2015
Numerator:
Net income (loss) attributable to Innoviva stockholders, basic	$	134,143	$	59,536	$	(18,760	)
Add: interest expense on 2023 Notes		5,647		5,790		—
Net income (loss) attributable to Innoviva stockholders, diluted	$	139,790	$	65,326	$	(18,760	)
Denominator:
Weighted-average shares used to compute basic net income (loss) per share attributable to Innoviva stockholders		106,945		110,280		115,372
Dilutive effect of 2023 Notes		12,189		12,541		—
Dilutive effect of options and awards granted under equity incentive plan and employee stock purchase plan		732		412		—
Weighted-average shares used to compute diluted net income (loss) per share attributable to Innoviva stockholders		119,866		123,233		115,372
Net income (loss) per share attributable to Innoviva stockholders
Basic	$	1.25	$	0.54	$	(0.16	)
Diluted	$	1.17	$	0.53	$	(0.16	)

Schedule of anti-dilutive securities

	Year Ended December 31,
(In thousands)	2017		2016		2015
Outstanding options and awards granted under equity incentive plan and employee stock purchase plan		2,121		4,073		6,934
Shares issuable upon conversion of 2023 Notes		—		—		12,904
		2,121		4,073		19,838