v3.7.0.1

Acquired Intangible Assets, net | 12 Months Ended
--- | ---
Apr. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Acquired Intangible Assets, net | Acquired Intangible Assets, net The Company evaluates the recoverability of its long-lived assets for impairment when indicators of potential impairment arise. The Company did not recognize any impairment of its acquired intangible assets during fiscal year 2017, 2016 or 2015. Acquired intangible assets, net, as of April 30, 2017 and April 30, 2016 for continuing operations are as follows (in thousands):
| April 30, 2017 |  | April 30, 2016
| Gross Fair Value |  | Accumulated Amortization |  | Net Book Value |  | Gross Fair Value |  | Accumulated Amortization |  | Net Book Value
Customer relationships | $ | 11,835 |  |  | $ | (5,395 | ) |  | $ | 6,440 |  |  | $ | 11,835 |  |  | $ | (4,158 | ) |  | $ | 7,677 |
Developed technology | 3,265 |  |  | (1,988 | ) |  | 1,277 |  |  | 3,265 |  |  | (1,335 | ) |  | 1,930 |
Total | $ | 15,100 |  |  | $ | (7,383 | ) |  | $ | 7,717 |  |  | $ | 15,100 |  |  | $ | (5,493 | ) |  | $ | 9,607 |
The amortization of customer relationships is recorded as amortization expense and the amortization for developed technology is recorded in cost of revenue. For the years ended April 30, 2017, 2016 and 2015, the Company incurred amortization expense of acquired intangible assets of $1.9 million, $1.9 million and $1.9 million, respectively. The following table presents our estimate of future amortization expense for definite-lived intangible assets (in thousands):
Fiscal period: | Amount
2018 | $ | 1,890 |
2019 | 1,856 |
2020 | 1,130 |
2021 | 1,130 |
2022 | 1,130 |
Thereafter | 581 |
Total | $ | 7,717 |

X
- References No definition available. + Details
Name: | us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_IntangibleAssetsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration