Revenue from Collaboration and License Agreements - Summary of Revenue Recognized of Change in Contract Liability Balances Related to Collaboration and License Agreements Associated with Partners (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020
Collaboration and License Agreements [Member]
Revenue recognized in current period from:
Amounts included in deferred revenue at the beginning of the period	$ 455	$ 1,059