STOCK-BASED COMPENSATION - Additional Information (Details) $ / shares in Units, $ in Millions	9 Months Ended		12 Months Ended
	Sep. 30, 2023 USD ($) anniversary $ / shares shares	Sep. 30, 2022 $ / shares	Dec. 31, 2022 shares	Jan. 01, 2023 shares	Jun. 30, 2021 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding (in shares)	7,400,147		5,610,893
Weighted average grant date fair value of options granted (in dollars per share) | $ / shares	$ 4.53	$ 3.77
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield	0.00%	0.00%
Option, cost not yet recognized, amount | $	$ 13.5
Weighted average period of recognition (in years)	2 years 4 months 24 days
Stock Options | Granted after December 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in months)	48 months
Cliff period (in years)	1 year
Contractual term (in years)	10 years
Stock Options | Granted prior to December 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term (in years)	10 years
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period of recognition (in years)	2 years 3 months 18 days
Number of anniversaries for vesting | anniversary	3
Non option, cost not yet recognized, amount | $	$ 1.5
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding stock maximum (as a percent)	1.00%
Common stock, capital shares reserved for future issuance (in shares)				410,251	375,000
Number of shares authorized (in shares)	1,189,983
Shares of common stock outstanding maximum (in shares)	800,000
Shares issued in period (in shares)	0
Minimum | Stock Options | Granted after December 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in months)	12 months
Minimum | Stock Options | Granted prior to December 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in months)	3 months
Maximum | Stock Options | Granted after December 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in months)	48 months
Maximum | Stock Options | Granted prior to December 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in months)	24 months
2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding (in shares)	3,231,274
2013 Equity Incentive Plan | Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grant (in shares)					667,104
2021 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance (in shares)				2,051,253
Maximum threshold common stock issuable on exercise of incentive stock options (in shares)	12,000,000
2021 Equity Incentive Plan | Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grant (in shares)	3,798,530				7,698,282
Outstanding stock maximum (as a percent)			5.00%
Number of shares authorized (in shares)	11,773,198
2021 Equity Incentive Plan | Common Stock, New Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grant (in shares)					3,550,000