CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue:
Total net revenue	$ 336,794	$ 261,016	$ 261,004
Operating expenses:
Research and development	1,788	0	0
General and administrative	13,883	14,656	20,053
General and administrative - related party	0	0	2,700
Total operating expenses	15,671	14,656	22,753
Income from operations	321,123	246,360	238,251
Other expense, net	(348)	(345)	(5,702)
Interest income	1,524	5,540	1,660
Interest expense	(18,331)	(18,660)	(23,954)
Changes in fair values of equity investments	50,277	0	0
Income before income taxes	354,245	232,895	210,255
Income tax benefit (expense), net	(60,431)	(41,902)	196,073
Net income	293,814	190,993	406,328
Net income attributable to noncontrolling interest	69,412	33,705	11,272
Net income attributable to Innoviva stockholders	$ 224,402	$ 157,288	$ 395,056
Basic net income per share attributable to Innoviva stockholders	$ 2.21	$ 1.55	$ 3.92
Diluted net income per share attributable to Innoviva stockholders	$ 2.02	$ 1.43	$ 3.53
Shares used to compute Innoviva basic and diluted net income per share:
Shares used to compute basic net income per share	101,320	101,150	100,849
Shares used to compute diluted net income per share	113,554	113,409	113,408
Royalty revenue from a related party
Revenue:
Total net revenue	$ 326,794	$ 261,016	$ 261,004
Revenue from collaborative arrangements with a related party
Revenue:
Total net revenue	$ 10,000	$ 0	$ 0