Accrued Expenses and Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2019

Payables And Accruals [Abstract]

Schedule of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following (in thousands):

	December 31, 2019		December 31, 2018
Accrued external research and development expenses	$	17,746	$	4,541
Accrued payroll and related expenses		2,630		2,379
Accrued professional fees		803		917
Accrued other		409		426
	$	21,588	$	8,263