Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2020

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Recognized Stock-Based Compensation Expense

The Company recognized stock-based compensation expense during the three and six months ended June 30, 2020 and 2019 as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands)	2020		2019		2020		2019
Research and development expense	$	—	$	40	$	—	$	223
General and administrative expense		464		447		948		858
Total stock-based compensation expense	$	464	$	487	$	948	$	1,081