STOCK-BASED COMPENSATION - Fair Value and Activity (Details) - Stock plans - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended
	Dec. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Shares
Outstanding at the beginning of the period (in shares)		1,517,876
Exercised (in shares)		(176,250)
Forfeited (in shares)		(37,074)
Outstanding at the end of the period (in shares)	1,517,876	1,304,552
Vested and expected to vest at end of period (in shares)		1,304,552
Exercisable at the end of the period (in shares)		1,246,973
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)		$ 44.82
Exercised (in dollars per share)		16.41
Forfeited (in dollars per share)		95.02
Outstanding at the end of the period (in dollars per share)	$ 44.82	47.23
Vested and expected to vest at end of period (in dollars per share)		47.23
Exercisable at the end of the period (in dollars per share)		$ 44.90
Weighted Average Remaining Contractual Term
Outstanding	4 years 8 months 12 days	4 years 1 month 6 days
Vested and expected to vest at end of period		4 years 1 month 6 days
Exercisable at the end of the period		4 years
Aggregate Intrinsic Value
Outstanding at the end of the period		$ 38,808
Vested and expected to vest at end of period		38,808
Exercisable at the end of the period		38,808
Total intrinsic value of options exercised		$ 10,600	$ 34,700