Income Taxes - Schedule of Activities Related to Company's 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	$ 295	$ 293
Increases related to current year tax positions	71	64
Decreases related to current year tax positions	(29)	(62)
Balance at the end of the year	$ 337	$ 295