Revenue from Contracts with Customers (Tables)

9 Months Ended

Sep. 30, 2020

Revenue from Contract with Customer [Abstract]

Summary of Collaboration and License Agreement Revenues by Collaborator

Collaboration and license agreement revenues by collaborator are summarized as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(dollars in thousands)	2020		2019		2020		2019
Merck	$	725,000	$	—	$	725,000	$	—
Takeda	7,013		17,720		22,925		89,859
Other	26,300		700		32,325		9,269
Collaboration and license agreement revenues	$	758,313	$	18,420	$	780,250	$	99,128