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Net Loss Per Share (Details) - Schedule of computation of basic and diluted net loss per share - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of computation of basic and diluted net loss per share [Abstract]
Net loss attributable to common stock shareholders	$ (43,776)	$ (28,313)	$ (234,103)	$ (80,963)	$ (115,479)
Weighted average common stock used in computing basic and diluted net loss per share	298,843,016	99,028,297
Basic and diluted net loss per share	$ (0.15)	$ (0.29)

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Net Income Loss Available To Common Stockholders.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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