Collaboration and License Agreements (Tables)

6 Months Ended

Jun. 30, 2020

Revenue Recognition and Deferred Revenue [Abstract]

Schedule of Collaboration Revenue

During the three and six months ended June 30, 2020 and 2019, we recognized the following collaboration revenue:

	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands)	2020		2019		2020		2019
Services performed that were considered performance obligations as of the modification dates
On-going research and development services	$	4,714	$	8,155	$	63,934	$	25,220
Services performed that were not considered performance obligations as of the modification dates
Commercialization activities	1,021		824		1,898		1,678
Total collaboration revenue - related party	$	5,735	$	8,979	$	65,832	$	26,898

Schedule of Changes in Contract Assets and Liabilities

The following table presents changes in our contract assets and liabilities during the six months ended June 30, 2020:

(In thousands)	December 31, 2019		Additions		Deductions		June 30, 2020
Contract assets
Collaboration receivable – related party (1)	$	1,539	$	2,876	$	(3,284)	$	1,131
Unbilled receivable - related party (2)	—		1,406		—		1,406
Royalty receivable – related party (3)	2,900		5,023		(6,273)		1,650
Contract liabilities
Deferred revenue – related party, current and net of current portions (4)	61,513		2,421		(63,934)		—

(1) Additions to collaboration receivables - related party relate to amounts billed to Celgene for reimbursable costs incurred by us during the reporting period. Deductions to receivables relate to collection of receivables during the reporting period.

(2) Unbilled receivables - related party amounts relate to future reimbursable costs to Celgene.

(3) Additions to royalty receivables - related party relate to amounts billed to Celgene during the reporting period. Deductions to receivables relate to collection of receivables during the reporting period.

(4) Additions to deferred revenue - related party relate to consideration from Celgene during the reporting period. Deductions relate to deferred revenue recognized as revenue during the reporting period.

The change in collaboration revenue from on-going research and development services during the three and six months ended June 30, 2020 is primarily due to our updated estimate of the future costs that would be incurred from on-going research and development services to complete one of our performance obligations under the 2016 collaboration agreement that is recognized over time using an input method, due to Celgene’s decision to decline extending the research term in Q1 2020.

During the three and six months ended June 30, 2020 and 2019, we recognized the following as revenue due to changes in the contract liability balances:

	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands)	2020		2019		2020		2019
Amounts included in the contract liability at the beginning of the period	$	4,748	$	8,009	$	61,513	$	24,419
Performance obligations satisfied in previous periods	—		—		—		—

Schedule of Royalty Revenue

During the three and six months ended June 30, 2020 and 2019, we recognized the following as royalty revenue:

	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands)	2020		2019		2020		2019
Royalty revenue – related party	$	3,339	$	2,703	$	6,673	$	4,903

Schedule of Collaboration Revenue Under CStone Agreement

During the three and six months ended June 30, 2020 and 2019, we recognized the following collaboration revenue -other:

	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands)	2020		2019		2020		2019
Services performed that were considered performance obligations as of the inception date
License and other services	$	—	$	—	$	192	$	—
Services performed that were not considered performance obligations as of the inception date
Other services	692		812		1,493		1,782
Total collaboration revenue - other	$	692	$	812	$	1,685	$	1,782

Schedule of Changes in Contract Assets and Liabilities, CStone Agreement

The following table presents changes in our contract assets during the six months ended June 30, 2020:

(In thousands)	December 31, 2019		Additions		Deductions		June 30, 2020
Contract assets (1)
Collaboration receivable - other	$	1,928	$	1,685	$	(1,786)	$	1,827

(1) Additions to contract assets relate to amounts receivable from CStone. Deductions to contract assets relate to collection of receivables during the reporting period.