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ACQUISITION - Recognized identifiable assets acquired and liabilities assumed and acquisition costs (Details) - USD ($) $ in Thousands			12 Months Ended
	Jan. 01, 2023	Jan. 01, 2022	Dec. 31, 2023	Dec. 31, 2024	Oct. 31, 2023	Dec. 31, 2022	Oct. 31, 2022
Identified assets acquired, and liabilities assumed
Goodwill			$ 97,232	$ 87,293		$ 94,972
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
Revenue	$ 3,900
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
Revenue		$ 7,000

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- Definition

Amount of accounts payable and accrued expense, assumed at the acquisition date.

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Amount of accounts receivable and contract assets acquired at the acquisition date.

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Amount of contract liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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