STOCK-BASED COMPENSATION - Restricted Stock Activity (Details) - Non-vested restricted stock units - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Restricted Share Units
Outstanding at beginning of year (in shares)	3,038,785	2,556,004
Granted (in shares)	2,851,443	3,091,206
Vested (in shares)	(2,173,829)	(2,183,163)
Forfeited (in shares)	(289,771)	(425,262)
Outstanding at end of year (in shares)	3,426,628	3,038,785
Restricted Share Weighted Average Grant Date Fair Value
Outstanding at beginning of year (in dollars per share)	$ 2.53	$ 3.38
Granted (in dollars per share)	4.38	2.04
Vested (in dollars per share)	3.51	2.82
Forfeited (in dollars per share)	3.88	2.57
Outstanding at end of year (in dollars per share)	$ 3.44	$ 2.53