Cash Equivalents and Marketable Securities - Additional Information (Details) - US Government Agencies Debt Securities $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021 USD ($) Security	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) Security	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) Security
Cash Equivalents And Marketable Securities [Line Items]
Number of debt securities held | Security	23		23		16
Allowance for Credit Loss	$ 0		$ 0		$ 0
Impairment of marketable securities			0		0
Realized gains or losses on marketable securities	0	$ 0	0	$ 0
Accrued interest receivable on available-for-sale debt securities	$ 300		$ 300		$ 200