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ACCOUNTS RECEIVABLE (SCHEDULE OF CHANGE IN ALLOWANCE) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
ACCOUNTS RECEIVABLE AND SIGNIFICANT CLIENTS [Abstract] |  |  |  |
Balance, beginning balance | $ 5,406 | $ 5,940 | $ 5,409 | $ 5,067
Provision for credit losses | 1,363 | (189) | 1,561 | (34)
Uncollectible receivables written-off | (890) |  | (1,110) |
Uncollectible receivables written-off recoveries |  | 302 |  | 41
Effect of foreign currency | (24) | (7) | (5) | (16)
Acquisition credit losses |  |  |  | 988
Balance, ending balance | $ 5,855 | $ 6,046 | $ 5,855 | $ 6,046

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