Collaboration and License Agreement (Tables)

3 Months Ended

Mar. 31, 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 three months ended March 31, 2018 (in thousands):

	Balance at Beginning of Period		Additions		Deductions		Balance at End of Period
Contract liabilities:
Deferred revenue - current	$	—	$	229	$	—	$	229
Deferred revenue - non-current	—		304		—		304
Total contract liabilities:	$	—	$	533	$	—	$	533