Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock-Based Compensation Expense

Total stock-based compensation expense was recognized in the condensed consolidated statements of operations and comprehensive loss as follows (in thousands):

	Three months ended June 30,				Six months ended June 30,
	2019		2018		2019		2018
Research and development		868	$	701		1,715	$	1,041
General and administrative		1,262		415		2,089		731
Total stock-based compensation	$	2,130	$	1,116	$	3,804	$	1,772