NET INCOME PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Net income	$ 69,311	$ 56,591	$ 49,351	$ 45,531	$ 33,388	$ 28,315	$ 2,035	$ (24,460)	$ 220,784	$ 39,278
Denominator:
Weighted average common shares outstanding: Basic (in shares)	648,422,232	648,124,642	648,124,642	647,994,569	647,888,387	647,888,387	647,775,891	597,212,079	648,166,472	635,386,219
Dilutive common equivalent shares from equity options									41,757,320	1,433,756
Weighted average common shares outstanding: Diluted (in shares)	692,863,933	690,711,782	656,745,557	656,268,316	655,736,276	653,036,893	647,775,891	597,212,079	689,923,792	636,819,975
Net income per share:
Net income (loss) per share: Basic (in usd per share)	$ 0.11	$ 0.09	$ 0.08	$ 0.07	$ 0.05	$ 0.04	$ 0	$ (0.04)	$ 0.34	$ 0.06
Net income (loss) per share: Diluted (in usd per share)	$ 0.10	$ 0.08	$ 0.08	$ 0.07	$ 0.05	$ 0.04	$ 0	$ (0.04)	$ 0.32	$ 0.06