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Intangible Assets and Goodwill (Tables) | 12 Months Ended
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Apr. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill Rollforward | The following table shows the roll-forward of goodwill.
| Interface |  | Power Products |  | Total
Balance as of April 27, 2013 | $ | 11.9 |  |  | $ | 1.0 |  |  | $ | 12.9 |
Foreign currency translation | 0.1 |  |  | — |  |  | 0.1 |
Balance as of May 3, 2014 | 12.0 |  |  | 1.0 |  |  | 13.0 |
Impairment | (11.1 | ) |  | — |  |  | (11.1 | )
Foreign currency translation | (0.2 | ) |  | — |  |  | (0.2 | )
Balance as of May 2, 2015 | 0.7 |  |  | 1.0 |  |  | 1.7 |
Impairment | — |  |  | — |  |  | — |
Foreign currency translation | — |  |  | — |  |  | — |
Balance as of April 30, 2016 | $ | 0.7 |  |  | $ | 1.0 |  |  | $ | 1.7 |
Schedule of Identifiable Intangible Assets | The following tables present details of our remaining identifiable intangible assets:
| As of April 30, 2016
| Gross |  | Accumulated Amortization |  | Net |  | Wtd. Avg. Remaining Amortization Periods (Years)
Customer relationships and agreements | $ | 16.3 |  |  | $ | 15.3 |  |  | $ | 1.0 |  |  | 7.8
Trade names, patents and technology licenses | 25.8 |  |  | 17.9 |  |  | 7.9 |  |  | 2.4
Covenants not to compete | 0.1 |  |  | 0.1 |  |  | — |  |  | 1.4
Total | $ | 42.2 |  |  | $ | 33.3 |  |  | $ | 8.9 |  |  |
| As of May 2, 2015
| Gross |  | Accumulated Amortization |  | Net |  | Wtd. Avg. Remaining Amortization Periods (Years)
Customer relationships and agreements | $ | 16.3 |  |  | $ | 15.0 |  |  | $ | 1.3 |  |  | 8.8
Trade names, patents and technology licenses | 25.8 |  |  | 15.8 |  |  | 10.0 |  |  | 3.3
Covenants not to compete | 0.1 |  |  | 0.1 |  |  | — |  |  | 2.4
Total | $ | 42.2 |  |  | $ | 30.9 |  |  | $ | 11.3 |  |  |
Schedule of Estimated Aggregate Amortization Expense | The estimated aggregate amortization expense for each of the five succeeding fiscal years is as follows:
2017 | $2.3
2018 | $2.2
2019 | $2.1
2020 | $0.2
2021 | $0.1

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + 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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