GOODWILL AND INTANGIBLE ASSETS, NET - Intangible assets, net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 77,367		$ 77,367		$ 70,423
Accumulated amortization	(37,561)		(37,561)		(32,894)
Intangible assets net	39,806		39,806		37,529
Amortization expense	3,016	$ 2,669	5,555	$ 5,473
Impairment of internal use software	0	$ 114	0	$ 114
Internal use software
Finite-Lived Intangible Assets [Line Items]
Intangible assets	63,298		63,298		55,164
Developed technology
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 14,069		$ 14,069		$ 15,259