ACCOUNTS RECEIVABLE (SIGNIFICANT CLIENTS TABLE) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Concentration Risk, Percentage of Revenue from Major Customer
Accounts receivable, net	$ 357,310	$ 378,397
Revenue \| Customer Concentration Risk \| Financial Services Client
Concentration Risk, Percentage of Revenue from Major Customer
Concentration risk percentage	12.00%	13.00%	3.00%
Accounts Receivable \| Credit Concentration Risk \| Financial Services Client
Concentration Risk, Percentage of Revenue from Major Customer
Accounts receivable, net	$ 15,483	$ 58,960	$ 4,321

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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