Organization and Description of Business - Liquidity (Details) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)
Organization and Description of Business
Number of operating segments \| segment	1
Net losses from operations since inception
Cash, cash equivalents and marketable securities	$ 326,900
Accumulated deficit	$ (409,362)	$ (283,811)

The cumulative amount of the reporting entity's undistributed earnings or deficit.

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