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Goodwill and Intangible Assets | 3 Months Ended
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Apr. 30, 2018
Goodwill And Intangible Assets Disclosure [Abstract] |
Goodwill and Intangible Assets | Note 5. Goodwill and Intangible Assets There was no goodwill activity for the three months ended April 30, 2018. Intangible assets consisted of the following (in thousands):
|  | Weighted Average Useful Life (1) |  | Gross Value |  |  | Accumulated Amortization |  |  | Net Carrying Value |
April 30, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Developed technology |  |  | 2.5 |  | years |  | $ | 14,273 |  |  | $ | (14,273 | ) |  | $ | — |
Trade name and other |  |  | 6.9 |  | years |  |  | 1,201 |  |  |  | (1,191 | ) |  |  | 10 |
Intangibles, net |  |  |  |  |  |  | $ | 15,474 |  |  | $ | (15,464 | ) |  | $ | 10 |
January 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Developed technology |  |  | 2.5 |  | years |  | $ | 14,273 |  |  | $ | (14,273 | ) |  | $ | — |
Trade name and other |  |  | 6.9 |  | years |  |  | 1,201 |  |  |  | (1,177 | ) |  |  | 24 |
Intangibles, net |  |  |  |  |  |  | $ | 15,474 |  |  | $ | (15,450 | ) |  | $ | 24 |
(1) | From the date of acquisition
Intangible amortization expense was not material for the three months ended April 30, 2018 and was $0.4 million for the three months ended April 30, 2017. Amortization of acquired technology is included in cost of revenue and amortization for trade names is included in general and administrative expenses in the condensed consolidated statements of operations. As of April 30, 2018, expected amortization expense for intangible assets was not material.

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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