Accrued Expenses (Tables)

9 Months Ended

Sep. 30, 2019

Payables And Accruals [Abstract]

Schedule of Accrued Expenses

Accrued expenses consisted of the following as of September 30, 2019 and December 31, 2018 (in thousands):

	September 30, 2019		December 31, 2018
External research and preclinical development	$	7,271	$	10,119
Employee compensation and benefits		3,323		2,985
Professional fees		549		618
Facilities and other		61		171
	$	11,204	$	13,893