Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

ACCOUNTS RECEIVABLE AND SIGNIFICANT CLIENTS(NARRATIVE) (Details) - USD ($) $ in Thousands	12 Months Ended			36 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2023
Entity Wide Revenue Major Customer Line Items
Revenue.	$ 2,462,817	$ 2,443,707	$ 2,273,062
Customer Concentration Risk \| Minimum
Entity Wide Revenue Major Customer Line Items
Revenue.	$ 100,000
Revenue \| Customer Concentration Risk
Entity Wide Revenue Major Customer Line Items
Concentration Risk, Customer				one
Revenue \| Customer Concentration Risk \| Financial Services Client
Entity Wide Revenue Major Customer Line Items
Concentration risk percentage	8.00%	7.00%	12.00%
Revenue \| Customer Concentration Risk \| Automotive Industry Client
Entity Wide Revenue Major Customer Line Items
Concentration risk percentage	10.00%	10.00%	9.00%