STOCK-BASED COMPENSATION - Activity of Restricted Stock Units and Performance-Based Restricted Stock Units (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2021 $ / shares shares
Restricted stock units
Number of Units
Outstanding, beginning balance (in shares) | shares	117
Granted (in shares) | shares	79
Vested (in shares) | shares	(110)
Cancelled (in shares) | shares	(11)
Outstanding, ending balance (in shares) | shares	75
Weighted-average Grant Date Fair Value
Outstanding, beginning balance (in dollars per share) | $ / shares	$ 83.66
Granted (in dollars per share) | $ / shares	159.18
Vested (in dollars per share) | $ / shares	81.94
Cancelled (in dollars per share) | $ / shares	131.01
Outstanding, ending balance (in dollars per share) | $ / shares	$ 158.87
Performance-based restricted stock units
Number of Units
Outstanding, beginning balance (in shares) | shares	1,043
Granted (in shares) | shares	813
Vested (in shares) | shares	(544)
Cancelled (in shares) | shares	(176)
Outstanding, ending balance (in shares) | shares	1,136
Weighted-average Grant Date Fair Value
Outstanding, beginning balance (in dollars per share) | $ / shares	$ 107.26
Granted (in dollars per share) | $ / shares	153.76
Vested (in dollars per share) | $ / shares	97.73
Cancelled (in dollars per share) | $ / shares	126.45
Outstanding, ending balance (in dollars per share) | $ / shares	$ 143.13