BeiGene Agreement (Tables)

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Contract with Customer, Asset and Liability

The following table presents a summary of the activity in the Company's contract liabilities during the six months ended June 30, 2018 (in thousands):

	December 31, 2017		Additions		Deductions		June 30, 2018
Contract liabilities:
Deferred revenue - current	$	—	$	318	$	—	$	318
Deferred revenue - non-current	—		215		—		215
Total contract liabilities:	$	—	$	533	$	—	$	533