SHARE BASED COMPENSATION - Service Based Restricted Stock Activity (Details) - Restricted stock units $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($) $ / shares shares
Number of Shares
Beginning balance (in shares) | shares	1,109,942
Granted (in shares) | shares	690,647
Vested (in shares) | shares	(208,310)
Forfeited/canceled (in shares) | shares	(23,610)
Ending balance (in share) | shares	1,568,669
Weighted Average Grant Date Fair Value
Beginning balance (in dollars per share) | $ / shares	$ 17.84
Granted (in dollars per share) | $ / shares	26.90
Vested (in dollars per share) | $ / shares	16.24
Forfeited/canceled (in dollars per share) | $ / shares	19.38
Ending balance (in dollars per share) | $ / shares	$ 22.02
Unamortized stock compensation expense | $	$ 30.0
Weighted-average recognition period (in years)	3 years