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Intangible Assets | 6 Months Ended
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Jul. 31, 2022
Intangible Assets |
Intangible Assets | Note 9 - Intangible Assets ​
​ | ​ | ​ | ​ | ​
​ |  | July 31, |  | January 31,
​ | ​ | 2022 | ​ | 2022
Cost |  |  |  |
Customer agreements and relationships |  | 266,481 |  | 251,402
Existing technology |  | 355,275 |  | 326,411
Trade names |  | 8,990 |  | 9,038
Non-compete covenants |  | 13,791 |  | 12,306
​ |  | 644,537 |  | 599,157
Accumulated amortization |  |  |  |
Customer agreements and relationships |  | 141,408 |  | 135,380
Existing technology |  | 234,197 |  | 218,953
Trade names |  | 6,894 |  | 6,677
Non-compete covenants |  | 9,473 |  | 8,538
​ |  | 391,972 |  | 369,548
Net |  | 252,565 |  | 229,609
​ Intangible assets related to our acquisitions are recorded at their fair value at the acquisition date. The change in intangible assets during the six month period ended July 31, 2022 is primarily due to the acquisitions of NetCHB, Foxtrot and XPS offset by amortization. The balance of the change in intangible assets is due to foreign currency translation. Intangible assets with a finite life are amortized into income over their useful lives. Amortization expense for existing intangible assets is expected to be $252.6 million over the following periods: $29.5 million for the remainder of 2023, $48.9 million for 2024, $45.8 million for 2025, $41.5 million for 2026, $26.9 million for 2027 and $60.0 million thereafter. Expected future amortization expense is subject to fluctuations in foreign exchange rates and assumes no future adjustments to acquired intangible assets.

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