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GOODWILL AND OTHER INTANGIBLES - Schedule of Intangibles (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Goodwill and Other Intangible Assets [Line Items] |  |
Cost | $ 136,577 | $ 136,616
Accumulated Amortization | (130,552) | (129,614)
Net Book Value | 6,025 | 7,002
Client-related |  |
Goodwill and Other Intangible Assets [Line Items] |  |
Cost | 63,111 | 63,117
Accumulated Amortization | (60,371) | (60,035)
Net Book Value | 2,740 | 3,082
Technology |  |
Goodwill and Other Intangible Assets [Line Items] |  |
Cost | 68,105 | 68,138
Accumulated Amortization | (64,820) | (64,218)
Net Book Value | 3,285 | 3,920
Other |  |
Goodwill and Other Intangible Assets [Line Items] |  |
Cost | 5,361 | 5,361
Accumulated Amortization | (5,361) | (5,361)
Net Book Value | $ 0 | $ 0
Minimum | Client-related |  |
Goodwill and Other Intangible Assets [Line Items] |  |
Useful Lives | 4 years | 4 years
Minimum | Technology |  |
Goodwill and Other Intangible Assets [Line Items] |  |
Useful Lives | 2 years | 2 years
Minimum | Other |  |
Goodwill and Other Intangible Assets [Line Items] |  |
Useful Lives | 1 year | 1 year
Maximum | Client-related |  |
Goodwill and Other Intangible Assets [Line Items] |  |
Useful Lives | 10 years | 10 years
Maximum | Technology |  |
Goodwill and Other Intangible Assets [Line Items] |  |
Useful Lives | 10 years | 10 years
Maximum | Other |  |
Goodwill and Other Intangible Assets [Line Items] |  |
Useful Lives | 5 years | 5 years

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