Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

Summary of Grant Income in the Accompanying Statements of Operations

Grant income in the accompanying statements of operations consisted of the following for the three and six-month periods ended June 30, 2021 and June 30, 2020 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Alzheimer's Association Part the Cloud    Research Grant	$	—	$	—	$	—	$	22
National Institutes of Health Grant		2,589		—		4,420		—
Total grant income	$	2,589	$	—	$	4,420	$	22

Summary of Amounts Recorded in the Accompanying Balance Sheets as Receivables from the Granting Agencies

Amounts recorded in the accompanying balance sheets as receivables from these granting agencies were as follows (in thousands):

	June 30, 2021		December 31, 2020
Alzheimer's Association Part the Cloud Research    Grant	$	—	$	224
National Institutes of Health Grant		2,589		1,076
Total grant income	$	2,589	$	1,300