Research Collaboration and License Agreements (Tables)

6 Months Ended

Jun. 30, 2019

Research Collaboration And License Agreements [Abstract]

Summary of Contract Liabilities

Information about contract liabilities is as follows:

	June 30,		December 31,
	2019		2018
Contract liabilities	$	45,517,693	$	53,550,671
Revenues recognized in the period from:
Amounts included in deferred revenue in previous periods	$	8,032,979	$	13,553,136

Transaction Price Allocated to Performance Obligations

The aggregate amount of the transaction price allocated to performance obligations that are unsatisfied as of June 30, 2019 was $45.5 million, which is expected to be recognized as revenue for the years ending December 31 are:

Remainder of 2019	$	8.0
2020		13.6
2021		13.5
2022		8.6
2023		1.8
	$	45.5