License and Collaboration Agreement (Tables)

12 Months Ended

Dec. 31, 2019

License and Collaboration Agreement.

Schedule of changes in contract assets and liabilities

The following table presents changes in the Company’s contract assets and liabilities for the years ended December 31, 2019 and 2018 (in thousands):

	Balance at						Balance at
	Beginning of						End of
Year Ended December 31, 2019	Period		Additions		Deductions		Period
Contract assets:
Receivable from collaboration partner - related party	$	2,042	$	36,837	$	(32,924)	$	5,955
Contract asset - related party	$	2,545	$	800	$	(2,545)	$	800
Contract liabilities:
Deferred revenue - related party	$	8,223	$	42,456	$	(9,149)	$	41,530
Payable to collaboration partner - related party	$	1,061	$	1,468	$	(1,267)	$	1,262

	Balance at						Balance at
	Beginning of						End of
Year ended December 31, 2018	Period		Additions		Deductions		Period
Contract assets:
Receivable from collaboration partner - related party	$	1,816	$	6,665	$	(6,439)	$	2,042
Contract asset - related party	$	—	$	2,545	$	—	$	2,545
Contract liabilities:
Deferred revenue - related party	$	31,752	$	7,296	$	(30,825)	$	8,223
Payable to collaboration partner - related party	$	—	$	1,574	$	(513)	$	1,061