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Intangible Assets and Goodwill - Goodwill Impairment Test (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended |  |  |  | 12 Months Ended |  |  |  |  | 12 Months Ended |  |  |  |  | 3 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 27, 2013 reporting_unit | May 03, 2014 | Apr. 27, 2013 reporting_unit | Apr. 28, 2012 | Jan. 26, 2013 | Apr. 30, 2011 | Apr. 27, 2013 Minimum | Apr. 27, 2013 Maximum | Apr. 27, 2013 Interconnect | May 03, 2014 Interconnect reporting_unit | Jan. 26, 2013 Interconnect reporting_unit | Apr. 28, 2012 Interconnect | Apr. 30, 2011 Interconnect | Apr. 27, 2013 Power Products | May 03, 2014 Power Products reporting_unit | Jan. 26, 2013 Power Products reporting_unit | Apr. 28, 2012 Power Products | Apr. 30, 2011 Power Products | May 03, 2014 Eetrex Power Products
Goodwill [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | $ 12.9 | $ 13.0 | $ 12.9 | $ 16.4 | $ 17.2 | $ 16.4 |  |  | $ 11.9 | $ 12.0 | $ 12.0 | $ 11.1 | $ 11.1 | $ 1.0 | $ 1.0 | $ 5.2 | $ 5.3 | $ 5.3 |
Asset Impairment Charges |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.7
Number of reporting units with goodwill |  |  |  |  |  |  |  |  |  | 2 | 2 |  |  |  | 1 | 2 |  |  |
Number of reporting units where Step 1 of goodwill impairment test was performed | 4 |  | 4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of reporting units where fair value exceeded carrying value | 2 |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage by which fair value exceeded carrying value |  | 17.00% |  |  |  |  | 16.00% | 75.00% |  |  |  |  |  |  |  |  |  |  |
Number of reporting units where fair value was less than carrying value | 1 |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment charge | $ 4.3 | $ 1.7 | $ 4.3 | $ 0 |  |  |  |  | $ 0 |  |  |  |  | $ 4.3 |  |  |  |  |

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228 + Details
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