Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2018

Stock-Based Compensation

Schedule of stock-based compensation expense

	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands)	2018		2017		2018		2017
Research and development	$	—	$	175	$	—	$	353
General and administrative		1,452		2,252		3,621		4,581
Total stock-based compensation expense	$	1,452	$	2,427	$	3,621	$	4,934

Schedule of unrecognized stock-based compensation cost

As of June 30, 2018, unrecognized stock-based compensation cost, including performance-contingent RSAs for which the performance milestones were determined to be probable of achievement, was as follows:

	Unrecognized
	Compensation
(In thousands)	Cost
Stock options	$	19
RSUs		2,096
RSAs		3,521
Market-based RSUs		627
Market-based RSAs		1,493
Total unrecognized compensation cost	$	7,756