v3.8.0.1

Acquired Intangible Assets, net | 6 Months Ended
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Oct. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Acquired Intangible Assets, net | Acquired Intangible Assets, net Acquired intangible assets, net, as of October 31, 2017 and April 30, 2017 are as follows (in thousands):
| October 31, 2017 |  | April 30, 2017
| Gross Fair Value |  | Accumulated Amortization |  | Net Book Value |  | Gross Fair Value |  | Accumulated Amortization |  | Net Book Value
Customer relationships | $ | 11,835 |  |  | $ | (6,013 | ) |  | $ | 5,822 |  |  | $ | 11,835 |  |  | $ | (5,395 | ) |  | $ | 6,440 |
Developed technology | 3,265 |  |  | (2,315 | ) |  | 950 |  |  | 3,265 |  |  | (1,988 | ) |  | 1,277 |
Total | $ | 15,100 |  |  | $ | (8,328 | ) |  | $ | 6,772 |  |  | $ | 15,100 |  |  | $ | (7,383 | ) |  | $ | 7,717 |
The amortization of customer relationships is recorded as amortization expense and the amortization for developed technology is amortized to cost of revenue. The following table presents our estimate of future amortization expense for definite-lived intangible assets (in thousands):
Fiscal period: | Amount
Remaining six months of fiscal year 2018 | $ | 945 |
Fiscal year 2019 | 1,856 |
Fiscal year 2020 | 1,130 |
Fiscal year 2021 | 1,130 |
Fiscal year 2022 | 1,130 |
Thereafter | 581 |
Total | $ | 6,772 |

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- Definition The entire disclosure for all or part of the information related to 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 1 -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 + Details
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