Description of Business (Details) - USD ($) $ in Thousands	1 Months Ended				9 Months Ended
	Sep. 30, 2021	Apr. 30, 2021	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Payments to acquire other investments					$ 7,630	$ 1,000
Takeda
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Non-refundable cash payment				$ 8,500
Molecular Assemblies, Inc. | Series A Preferred Stock
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of shares purchased (in shares)		1,000,000	1,587,050
Payments to acquire other investments		$ 600	$ 1,000
Molecular Assemblies, Inc. | Series B Preferred Stock
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of shares purchased (in shares)	9,198,423				9,198,423
Payments to acquire other investments	$ 7,000