SHARE-BASED COMPENSATION - Summary of Award Activity (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
2014 Plan and 2012 Plan
Shares Outstanding
Number of shares available for grant (in shares)	5,100
Stock Options Granted
Number of Options
Outstanding, beginning of period (in shares)	10,261
Granted (in shares)	0
Exercised (in shares)	(3,180)
Canceled or forfeited (in shares)	(8)
Outstanding, end of period (in shares)	7,073	10,261
Restricted Stock Units Granted
Shares Outstanding
Outstanding, beginning of period (in shares)	4,250
Granted (in shares)	968	2,200	2,000
Vested (in shares)	(1,566)	(900)	(300)
Canceled or forfeited (in shares)	(112)
Outstanding, end of period (in shares)	3,540	4,250