Basis of Presentation and Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

Summary of Total Stock-Based Compensation Expense

The table below summarizes the total stock-based compensation expense included in the Company’s condensed statements of operations for stock options and shares subject to purchase under the ESPP for the periods presented (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Research and development	$	81	$	33	$	481	$	49
General and administrative		607		29		791		39
	$	688	$	62	$	1,272	$	88