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GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Intangibles (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Goodwill and Other Intangible Assets [Line Items] |  |
Cost | $ 136,616 | $ 136,493
Accumulated Amortization | (129,614) | (125,605)
Net book value | 7,002 | 10,888
Client-related |  |
Goodwill and Other Intangible Assets [Line Items] |  |
Cost | 63,117 | 63,076
Accumulated Amortization | (60,035) | (58,623)
Net book value | 3,082 | 4,453
Technology |  |
Goodwill and Other Intangible Assets [Line Items] |  |
Cost | 68,138 | 68,056
Accumulated Amortization | (64,218) | (61,621)
Net book value | 3,920 | 6,435
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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