| GOODWILL AND OTHER INTANGIBLE ASSETS |
7. GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill | | | | | | | | | | | | (in thousands) | 2024 | | 2023 | | January 1, | $ | 81,611 | | | $ | 81,399 | | | | | | | Currency translation adjustments | (498) | | | 212 | | | December 31, | $ | 81,113 | | | $ | 81,611 | |
Intangibles Intangible assets are recorded at cost and amortized using the straight-line method over their estimated useful lives: | | | | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2024 | | (in thousands) | Useful Lives | | Cost | | Accumulated Amortization | | Net Book Value (1) | Client-related | 4-10 years | | $ | 63,107 | | | $ | (61,395) | | | $ | 1,712 | | Technology | 2-10 years | | 68,115 | | | (65,995) | | | 2,120 | | Other | 1-5 years | | 5,361 | | | (5,361) | | | — | | | | | $ | 136,583 | | | $ | (132,751) | | | $ | 3,832 | |
(1) Included in other long-term assets. | | | | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2023 | | (in thousands) | Useful Lives | | Cost | | Accumulated Amortization | | Net Book Value (1) | | Client-related | 4-10 years | | $ | 63,117 | | | $ | (60,035) | | | $ | 3,082 | | | Technology | 2-10 years | | 68,138 | | | (64,218) | | | 3,920 | | | Other | 1-5 years | | 5,361 | | | (5,361) | | | — | | | | | $ | 136,616 | | | $ | (129,614) | | | $ | 7,002 | |
(1) Included in other long-term assets. Future estimated intangible assets amortization: | | | | | | (in thousands) | December 31, 2024 | | 2025 | $ | 2,630 | | | 2026 | 874 | | | 2027 | 328 | | | | | | | $ | 3,832 | |
Amortization of intangible assets: | | | | | | | | | | | | | | | | | | (in thousands) | 2024 | | 2023 | | 2022 | | Cost of revenue | $ | 1,783 | | | $ | 2,570 | | | $ | 2,723 | | | Selling and marketing | 1,370 | | | 1,370 | | | 1,370 | |
| $ | 3,153 | | | $ | 3,940 | | | $ | 4,093 | |
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