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Intangible Assets (Details) - USD ($) $ in Thousands | Jul. 31, 2022 | Jan. 31, 2022
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Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, cost | $ 644,537 | $ 599,157
Intangible assets, amortization cost | 391,972 | 369,548
Intangible assets. net | 252,565 | 229,609
Customer agreements and relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, cost | 266,481 | 251,402
Intangible assets, amortization cost | 141,408 | 135,380
Existing technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, cost | 355,275 | 326,411
Intangible assets, amortization cost | 234,197 | 218,953
Trade names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, cost | 8,990 | 9,038
Intangible assets, amortization cost | 6,894 | 6,677
Non-compete covenants |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, cost | 13,791 | 12,306
Intangible assets, amortization cost | $ 9,473 | $ 8,538

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