Revenue Recognition - Schedule of Changes in Contract Assets and Liabilities (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($)
Contract assets:
Total contract assets, Balance at Beginning of Period	$ 3,783
Contract assets, Addition	366
Contract assets, Deduction	(741)
Total contract assets, Balance at End of Period	3,408
Contract liabilities:
Total contract liabilities, Balance at Beginning of Period	5,518
Contract liabilities, Addition	0
Contract liabilities, Deduction	(622)
Total contract liabilities, Balance at End of Period	4,896
Unbilled - collaboration and license revenue
Contract assets:
Total contract assets, Balance at Beginning of Period	3,783
Contract assets, Addition	366
Contract assets, Deduction	(741)
Total contract assets, Balance at End of Period	3,408
Deferred revenue
Contract liabilities:
Total contract liabilities, Balance at Beginning of Period	5,518
Contract liabilities, Addition	0
Contract liabilities, Deduction	$ (622)