Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2021

Accounting Policies [Abstract]

Schedule of Estimated Stock-Based Compensation Expense

Stock-based compensation expense, net of estimated forfeitures, is reflected in the condensed consolidated statements of operations as follows (in thousands):

	Three Months Ended
	March 31,
	2021		2020
Operating Expenses
Research and development	$	219	$	121
General and administrative		286		596
Total	$	505	$	717