CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue:
Total net revenue	$ 261,004	$ 217,217	$ 133,569
Operating expenses:
Research and development	0	1,355	1,393
General and administrative	20,053	32,258	23,188
General and administrative - related party	2,700	0	0
Total operating expenses	22,753	33,613	24,581
Income from operations	238,251	183,604	108,988
Other income (expense), net	(5,702)	(7,038)	2,477
Interest income	1,660	1,311	582
Interest expense	(23,954)	(43,601)	(52,416)
Income before income taxes	210,255	134,276	59,631
Income tax benefit (expense), net	196,073	(4)	(95)
Net income	406,328	134,272	59,536
Net income attributable to noncontrolling interest	11,272	129	0
Net income attributable to Innoviva stockholders	$ 395,056	$ 134,143	$ 59,536
Basic net income per share attributable to Innoviva stockholders	$ 3.92	$ 1.25	$ 0.54
Diluted net income per share attributable to Innoviva stockholders	$ 3.53	$ 1.17	$ 0.53
Shares used to compute Innoviva basic and diluted net income per share:
Shares used to compute basic net income per share	100,849	106,945	110,280
Shares used to compute diluted net income per share	113,408	119,866	123,233
Royalty revenue from a related party
Revenue:
Total net revenue	$ 261,004	$ 214,118	$ 132,684
Revenue from collaborative arrangements from a related party
Revenue:
Total net revenue	$ 0	$ 3,099	$ 885