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Intangible Assets (Details) - USD ($) $ in Thousands | Jan. 31, 2023 | Jan. 31, 2022
--- | --- | ---
Intangible Assets |  |
Intangible assets, cost | $ 647,326 | $ 599,157
Intangible assets, amortization cost | 417,518 | 369,548
Net | 229,808 | 229,609
Customer agreements and relationships |  |
Intangible Assets |  |
Intangible assets, cost | 268,712 | 251,402
Intangible assets, amortization cost | 151,016 | 135,380
Existing technology |  |
Intangible Assets |  |
Intangible assets, cost | 355,695 | 326,411
Intangible assets, amortization cost | 248,867 | 218,953
Trade names |  |
Intangible Assets |  |
Intangible assets, cost | 9,026 | 9,038
Intangible assets, amortization cost | 7,318 | 6,677
Non-compete covenants |  |
Intangible Assets |  |
Intangible assets, cost | 13,893 | 12,306
Intangible assets, amortization cost | $ 10,317 | $ 8,538

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