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Intangible Assets and Goodwill (Tables) | 12 Months Ended
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May. 02, 2015
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 28, 2012 | $ | 11.1 |  |  | $ | 5.3 |  |  | $ | 16.4 |
Impairment | — |  |  | (4.3 | ) |  | (4.3 | )
Acquisitions | 0.8 |  |  | — |  |  | 0.8 |
Foreign currency translation | — |  |  | — |  |  | — |
Balance as of April 27, 2013 | 11.9 |  |  | 1.0 |  |  | 12.9 |
Impairment | — |  |  | — |  |  | — |
Acquisitions | — |  |  | — |  |  | — |
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 |
Schedule of Identifiable Intangible Assets | The following tables present details of our remaining identifiable intangible assets:
| 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 |  |  |
| As of May 3, 2014
| Gross |  | Accumulated Amortization |  | Net |  | Wtd. Avg. Remaining Amortization Periods (Years)
Customer relationships and agreements | $ | 16.6 |  |  | $ | 14.7 |  |  | $ | 1.9 |  |  | 9.9
Trade names, patents and technology licenses | 25.8 |  |  | 14.8 |  |  | 11.0 |  |  | 9.8
Covenants not to compete | 0.1 |  |  | — |  |  | 0.1 |  |  | 3.4
Total | $ | 42.5 |  |  | $ | 29.5 |  |  | $ | 13.0 |  |  |
Schedule of Estimated Aggregate Amortization Expense | The estimated aggregate amortization expense for each of the five succeeding fiscal years is as follows:
2016 |  | $ | 2.4 |
2017 |  | $ | 2.3 |
2018 |  | $ | 2.2 |
2019 |  | $ | 2.1 |
2020 |  | $ | 0.2 |

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