STOCK BASED COMPENSATION - Restricted Stock Awards (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Weighted Average Grant Date Fair Value
Total stock based compensation expenses	$ 7,683	$ 12,040	$ 26,699	$ 41,170
Restricted Stock awards
Shares Subject to Vesting
Balance at beginning of period, unvested shares (in shares)			102
Vested (in shares)			(85)
Balance at end of period, unvested shares (in shares)	17		17
Weighted Average Grant Date Fair Value
Balance at beginning of Period, unvested shares (in dollars per share)			$ 8.78
Vested (in dollars per share)			8.78
Balance at end of Period, unvested shares (in dollars per share)	$ 8.78		$ 8.78
Total stock based compensation expenses	$ 100	$ 200	$ 700	$ 800
Unrecognized stock-based compensation expense	$ 100		$ 100
Weighted-average period			4 months 24 days