Summary of Significant Accounting Policies (Details) $ in Thousands	9 Months Ended
Sep. 30, 2022 USD ($) segment item	Dec. 31, 2021 USD ($)
Summary of Significant Accounting Policies
Accumulated deficit	$ (297,872)	$ (266,381)
Cash, cash equivalents and marketable securities	49,600
Accumulated other comprehensive income	$ (1,193)	$ 1,869
Concentrations of Credit Risk and Other Risks and Uncertainties
Number of financial institutions used for cash and cash equivalent deposits \| item	2
Segments
Number of operating segments \| segment	1

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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

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