Additional Balance Sheet Detail (Tables)

12 Months Ended

Dec. 31, 2020

Balance Sheet Related Disclosures [Abstract]

Schedule of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following (in thousands):

	December 31, 2020		December 31, 2019
Prepaid expenses	$	3,668	$	2,796
Prepaid sign-on bonuses subject to vesting provisions		147		179
Interest income receivable		176		111
Other		74		284
Total prepaid expenses and other current assets	$	4,065	$	3,370

Schedule of Accrued Expenses and Other Current Liabilities

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

	December 31, 2020		December 31, 2019
External research and development	$	4,082	$	2,250
Payroll and benefits		2,928		2,239
Professional services		196		891
Capital lease obligation, current portion		17		50
Restricted stock liability, current portion		6		17
Other		38		49
Total accrued expenses and other current liabilities	$	7,267	$	5,496