Revenue from Collaboration and License Agreements (Tables)

6 Months Ended

Jun. 30, 2020

Summary of Net Revenue from Partners in Connection with Collaboration and License Agreements

Net revenue from our partners in connection with our collaboration and license agreements consisted of the following (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
License Agreement with Pfizer	$	5,735	$	—	$	6,339	$	—
Strategic Collaboration with Novartis		278		10,722		589		167,784
Collaboration and License Agreement with    PTC Therapeutics		—		6,036		—		6,036
Total net revenue from partners	$	6,013	$	16,758	$	6,928	$	173,820

Summary of Balance of Receivables and Contract Liabilities Related to Net Product Revenue

The following table presents the balance of our receivables and contract liabilities related to net product revenue (in thousands):

	June 30, 2020		December 31, 2019
Receivables included in "Accounts receivable"	$	13,536	$	6,946
Contract liabilities included in "Accrued liabilities"		4,632		1,550

Summary of Revenue Recognized of Change in Contract Liability Balances Related to Collaboration and License Agreements Associated with Partners

During the three and six months ended June 30, 2020, we recognized the following revenue as a result of the change in the contract liability balances related to our collaboration and license agreements associated with our partners (in thousands):

	Three Months Ended June 30, 2020		Six Months Ended June 30, 2020
Revenue recognized in current period from:
Amounts included in deferred revenue at the beginning    of the period	$	455	$	1,059

Collaboration and License Agreements [Member]

Summary of Balance of Receivables and Contract Liabilities Related to Net Product Revenue

The following table presents the balance of our receivables and contract liabilities related to our collaboration and license agreements associated with our partners (in thousands):

	June 30, 2020		December 31, 2019
Receivables included in "Accounts receivable"	$	513	$	3,550
Contract liabilities included in "Deferred revenue"		263		1,322