SHARE BASED COMPENSATION - Summary of share option activities (Details) - USD ($)		12 Months Ended
Apr. 30, 2020	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation		$ 10,147,362	$ 14,213,841	$ 13,370,377
Share options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding at the beginning		28,431,196	44,356,789
Exercised		(2,323,795)	(11,347,330)
Forfeited			(4,578,263)
Outstanding at the end		26,107,401	28,431,196	44,356,789
Outstanding at the beginning		$ 0.03046	$ 0.04833
Exercised		0.03554	0.02521
Forfeited			0.19802
Outstanding at the end		$ 0.03001	$ 0.03046	$ 0.04833
Weighted average remaining contractual life		4 years 9 months 29 days	5 years 9 months 25 days	6 years 9 months 7 days
Aggregate intrinsic value		$ 7,243,680	$ 7,335,391	$ 12,375,711
Share-based compensation	$ 800,000	612,686	$ 1,238,963	$ 4,272,939
Total unrecognized share based compensation expense		$ 5,964,247
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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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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Number of options outstanding, including both vested and non-vested options.

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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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