Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Share-Based Compensation - Share Based Compensation Expense By Type (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-Based Compensation
Share-based compensation expense	$ 60,450	$ 51,313	$ 49,145
Unrecognized compensation cost	112,908
Options
Share-Based Compensation
Share-based compensation expense	6,381	8,441	7,969
Unrecognized compensation cost	$ 13,120
Weighted-average amortization period - years	2 years 10 months 13 days
RSUs
Share-Based Compensation
Share-based compensation expense	$ 39,520	34,077	25,959
Unrecognized compensation cost	$ 93,104
Weighted-average amortization period - years	2 years 9 months 18 days
Performance-Contingent Awards - RSAs and RSUs
Share-Based Compensation
Share-based compensation expense	$ 12,717	4,707	9,224
Unrecognized compensation cost	$ 3,681
Weighted-average amortization period - years	9 months 3 days
ESPP
Share-Based Compensation
Share-based compensation expense	$ 1,768	3,351	2,135
Unrecognized compensation cost	$ 3,003
Weighted-average amortization period - years	9 months 7 days
Innoviva \| Options
Share-Based Compensation
Share-based compensation expense		280	2,973
Innoviva \| RSUs
Share-Based Compensation
Share-based compensation expense			224
Innoviva \| Restricted shares
Share-Based Compensation
Share-based compensation expense	$ 64	$ 457	660
Innoviva \| Performance-Contingent Awards - RSAs \| Performance-Contingent
Share-Based Compensation
Share-based compensation expense			$ 1