Quarterly report pursuant to Section 13 or 15(d)

Nature of Business - Additional Information (Details)

Nature of Business - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Net Loss	$ 25,146	$ 14,228	$ 86,600	$ 84,000	$ 75,400
Accumulated deficit	(488,725)		$ (463,579)
Cash, cash equivalents and marketable securities, fair value	$ 112,900

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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+ Details

- Definition

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

+ References + Details