CONVERTIBLE AND REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) (Details 1) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Number of Options
Outstanding as of January 1, 2021	31,981,404
Granted	2,552,985
Exercised	(863,041)
Forfeited	(968,385)
Outstanding as of December 30, 2021	32,702,963	31,981,404
Exercisable options at end of the year	17,906,181
Weighted Average exercise price
Outstanding as of January 1, 2021	$ 3.86
Granted	4.38
Exercised	1.59
Forfeited	3.25
Outstanding as of December 31, 2021	3.98	$ 3.86
Exercisable options at end of the year	$ 1.53
Options outstanding, contractual term (years)	8 years 4 months 2 days	7 years 8 months 19 days
Options exercisable, contractual term (years)	7 years 9 months 18 days
Aggregate Intrinsic Value (as restated)
Outstanding as of January 1, 2021	$ 100,495
Exercised	5,437	$ 8,842	$ 837
Outstanding as of December 31, 2021	38,894	$ 100,495
Exercisable options at end of the year	$ 32,778

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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