Income Taxes - Summary of Changes in Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Balance at the beginning of the year	$ 270	$ 73
Additions for tax positions taken in prior years	14	5
Additions for tax positions taken in current year	493	192
Balance at the end of the year	$ 777	$ 270