Fair Value Measurement - Schedule of Company's Valuation Hierarchy of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands		Jun. 30, 2021	Dec. 31, 2020
Assets:
Cash and cash equivalents		$ 199,693	$ 83,966
Recurring Basis | Level 1
Assets:
Short-term investments		37,568	225,186
Total		231,072	295,899
Recurring Basis | Level 1 | Money Market Fund
Assets:
Cash and cash equivalents	[1]	$ 193,504	$ 70,713

[1] Included in cash and cash equivalents in the accompanying condensed consolidated balance sheets.