SHARE BASED COMPENSATION - Summary of stock option outstanding (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Shares ( in thousands)
Balance at the beginning (in shares)	12,981	9,932
Options granted (in shares)	208	4,359
Options exercised (in shares)	(1,611)	(205)
Options Expired or forfeited (in shares)	(81)	(1,105)
Options Cancelled (in shares)	(244)
Balance at the end (in shares)	11,253	12,981	9,932
Vested and exercisable at the end ( in shares)	7,519
Weighted- Average Exercise Price
Weighted average exercise price, balance at the beginning (in dollars per share)	$ 0.47	$ 0.17
Weighted average exercise price, granted (in dollars per share)	1.06	1.06
Weighted average exercise price, exercised (in dollars per share)	0.16	0.13
Weighted average exercise price, forfeited (in dollars per share)	0.89	0.17
Weighted average exercise price, cancelled (in dollars per share)	0.72
Weighted average exercise price, balance at the end (in dollars per share)	0.51	$ 0.47	$ 0.17
Weighted average exercise price, vested and exercisable at the end (in dollars per share)	$ 0.32
Weighted-Average Remaining Contractual Term (In years)
Weighted average remaining contractual term, Outstanding options exercisable (in years)	6 years 9 months 18 days	7 years 9 months 18 days	7 years 10 months 24 days
Weighted average remaining contractual term, Vested and exercisable options (in years)	6 years 3 months 18 days