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FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended		12 Months Ended
	Apr. 28, 2023	May 05, 2021	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Goodwill impairment			$ 0	$ 0	$ 0	$ 83,149	$ 396,200
Bridg Acquisition
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
First Anniversary ARR	$ 23,200	$ 12,500			20,800
Stock price (in usd per share)	$ 40.15
Bridg Acquisition | If 30% in Cash and Rest in Shares
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
First Anniversary ARR	$ 72,600				$ 65,300
Bridg Acquisition | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Percent of First Anniversary payment amount paid in cash	30.00%		30.00%

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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