SHARE BASED COMPENSATION - Summary of share option activities (Details) - USD ($)		12 Months Ended
Apr. 30, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation		$ 14,213,841	$ 13,370,377	$ 6,054,612
Share options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding at the beginning		44,356,789	59,744,249
Cancelled to grant RSUs	7,660,000		750,000
Exercised		(11,347,330)	(15,767,275)
Forfeited		(4,578,263)	(370,185)
Outstanding at the end		28,431,196	44,356,789	59,744,249
Outstanding at the beginning		$ 0.04833	$ 0.03005
Cancelled to grant RSUs			1.18530
Exercised		0.02521	0.03322
Forfeited		0.19802	0.04544
Outstanding at the end		$ 0.03046	$ 0.04833	$ 0.03005
Weighted average remaining contractual life		5 years 9 months 25 days	6 years 9 months 7 days	7 years 6 months
Aggregate intrinsic value		$ 7,335,391	$ 12,375,711	$ 29,829,248
Share-based compensation	$ 800,000	1,238,963	$ 4,272,939	$ 1,701,132
Total unrecognized share based compensation expense		$ 6,603,460
Weighted average period expected to be recognized for unrecognized share based compensation expense		3 years 8 months 12 days

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost to be recognized for option under share-based payment arrangement.

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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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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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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 of the plan that expired.

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Number of non-vested options forfeited.

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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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