SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Acquired Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	$ 161,449	$ 42,019
Accumulated Amortization	18,316	7,894
Intangible Assets, Net	143,133	34,125
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	57,949	13,247
Accumulated Amortization	6,574	2,489
Intangible Assets, Net	$ 51,375	10,758
Customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	3 years
Customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	9 years
Purchased technology
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	$ 93,241	26,896
Accumulated Amortization	10,578	5,053
Intangible Assets, Net	$ 82,663	21,843
Purchased technology | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	3 years
Purchased technology | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years
Trademarks/trade names
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	$ 10,259	1,876
Accumulated Amortization	1,164	352
Intangible Assets, Net	$ 9,095	$ 1,524
Trademarks/trade names | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	1 year
Trademarks/trade names | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years