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Acquisition-related Intangible Assets, Net (Tables) | 3 Months Ended
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Apr. 30, 2018
Acquired Finite-Lived Intangible Assets [Line Items] |
Schedule of Acquired Assets | Acquisition-related intangible assets, net consisted of the following (in thousands):
| April 30, 2018 |  | January 31, 2018
Acquired developed technology | $ | 69,700 |  |  | $ | 69,700 |
Customer relationship assets | 1,000 |  |  | 1,000 |
| 70,700 |  |  | 70,700 |
Less accumulated amortization | (41,554 | ) |  | (36,466 | )
Acquisition-related intangible assets, net | $ | 29,146 |  |  | $ | 34,234 |
Developed technology and customer relationships |
Acquired Finite-Lived Intangible Assets [Line Items] |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | As of April 30, 2018, our future estimated amortization expense related to acquired developed technology and customer relationship assets is as follows (in thousands):
Fiscal Period: |
2019 | $ | 14,998 |
2020 | 11,481 |
2021 | 1,517 |
2022 | 1,150 |
Total | $ | 29,146 |

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- Definition Tabular disclosure of the characteristics, including initial carrying value, residual amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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