STOCKHOLDERS’ EQUITY - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		9 Months Ended
	Apr. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Jun. 01, 2021	Feb. 06, 2020
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)		50,000,000		50,000,000
Preferred stock, par value (in dollars per share)		$ 0.00001		$ 0.00001
Stock repurchase program, authorized amount						$ 250.0
Repurchase of common stock (in shares)		3,309,196	0	8,565,933	5,436,479
Stock Warrants
Class of Stock [Line Items]
Stock awards other than options, balance (in shares)							1,704,205
Stock awards other than options, outstanding, balance (in dollars per share)							$ 19.12
Common stock surrendered in connection with warrant exercise (in shares)	1,000,000
Class A Common Stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)		400,000,000		400,000,000
Common stock, par value (in dollars per share)		$ 0.00001		$ 0.00001