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ACQUISITIONS - Recognized identifiable assets acquired and liabilities assumed and acquisition costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Sep. 30, 2024	Oct. 31, 2023	Oct. 31, 2022
Identified assets acquired, and liabilities assumed
Goodwill	$ 97,232		$ 87,545
Ventana Research
Identified assets acquired, and liabilities assumed
Accounts receivable				$ 404
Intangible assets				1,400
Contract liabilities				(1,362)
Net assets acquired				442
Goodwill				$ 2,215
Acquisition related cost	$ 100
Change 4 Growth
Identified assets acquired, and liabilities assumed
Accounts receivable and contract assets					$ 1,841
Intangible assets					4,300
Accounts payable and accrued expense					(428)
Contract liabilities					(85)
Net assets acquired					5,628
Goodwill					$ 4,360
Acquisition related cost		$ 200