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GOODWILL AND OTHER INTANGIBLES - Schedule of Amortizable Intangible Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Goodwill and Other Intangible Assets [Line Items] |  |
Cost | $ 136,609 | $ 136,493
Accumulated Amortization | (127,677) | (125,605)
Net Book Value | 8,932 | 10,888
Client-related |  |
Goodwill and Other Intangible Assets [Line Items] |  |
Cost | 63,111 | 63,076
Accumulated Amortization | (59,344) | (58,623)
Net Book Value | 3,767 | 4,453
Technology |  |
Goodwill and Other Intangible Assets [Line Items] |  |
Cost | 68,137 | 68,056
Accumulated Amortization | (62,972) | (61,621)
Net Book Value | 5,165 | 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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