STOCK-BASED COMPENSATION - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Jan. 01, 2026	Dec. 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding (in shares)	14,887,053			12,578,766
Intrinsic value of stock options exercised	$ 0.1	$ 0.0
Option, cost not yet recognized, amount	$ 11.3
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value of options granted (in dollars per share)	$ 1.42	$ 1.33
Expected dividend yield	0.00%	0.00%
Weighted average period of recognition	2 years 6 months
Stock Options | Award Date, Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	48 months
Cliff period (in years)	1 year
Contractual term (in years)	10 years
Stock Options | Award Date, Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Stock Options | Award Date, One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term (in years)	10 years
Stock Options | Minimum | Award Date, Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	12 months
Stock Options | Minimum | Award Date, One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 months
Stock Options | Maximum | Award Date, Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	48 months
Stock Options | Maximum | Award Date, One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	24 months
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Weighted average period of recognition	2 years 2 months 12 days
Non option, cost not yet recognized, amount	$ 5.1
RSUs | Share-Based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
RSUs | Share-Based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
RSUs | Share-Based Payment Arrangement, Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding stock maximum (as percent)	1.00%
Common stock, shares reserved for future issuance (in shares)	2,975,783		605,754
Shares of common stock outstanding maximum (in shares)	800,000
Shares issued in period (in shares)	0
2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding (in shares)	3,035,572
2021 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares reserved for future issuance (in shares)			3,028,768
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]
Outstanding stock maximum (as percent)	5.00%
Number of shares authorized (in shares)	20,702,193
Shares available for future grant (in shares)	1,392,371