CONVERTIBLE PREFERRED STOCK - Additional Information (Details) - USD ($)	Apr. 06, 2021	May 07, 2020	Dec. 04, 2019
Convertible Preferred Stock
Subsidiary, Sale of Stock [Line Items]
Sale of stock, consideration received on transaction			$ 400,000,000
Series A Preferred Stock | Series A Private Placement
Subsidiary, Sale of Stock [Line Items]
Sale of stock, consideration received on transaction		$ 200,000,000
Sale of stock, number of shares issued (in shares)		200,000
Sale of stock, price per share (in dollars per share)		$ 1,000
Sale of stock, direct and indirect costs		$ 2,700,000
Series B Preferred Stock | Series B Private Placement
Subsidiary, Sale of Stock [Line Items]
Sale of stock, consideration received on transaction	$ 200,000,000
Sale of stock, number of shares issued (in shares)	200,000
Sale of stock, price per share (in dollars per share)	$ 1,000
Sale of stock, direct and indirect costs	$ 1,300,000