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Long-Lived Assets (Tables) | 12 Months Ended
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Apr. 27, 2013
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | The changes in the carrying amount of goodwill related to each reportable segment for the fiscal year ended April 27, 2013 were as follows:
| Live Events |  | Commercial |  | Transportation |  | Total
Balance as of April 28, 2012: | $ | 2,435 |  |  | $ | 741 |  |  | $ | 171 |  |  | $ | 3,347 |
Foreign currency translation | (18 | ) |  | (16 | ) |  | (7 | ) |  | (41 | )
Balance as of April 27, 2013: | $ | 2,417 |  |  | $ | 725 |  |  | $ | 164 |  |  | $ | 3,306 |
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets | The following table sets forth the gross carrying amount and accumulated amortization of intangible assets by major intangible class as of April 27, 2013 and April 28, 2012:
|  | April 27, 2013 |  | April 28, 2012
|  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Value |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Value
Definite-lived: |  |  |  |  |  |  |  |  |  |  |  |
Patents |  | $ | 2,282 |  |  | $ | 1,502 |  |  | $ | 780 |  |  | $ | 2,282 |  |  | $ | 1,274 |  |  | $ | 1,008 |
Indefinite-lived: |  |  |  |  |  |  |  |  |  |  |  |
Registered trademarks |  | 401 |  |  | — |  |  | 401 |  |  | 401 |  |  | — |  |  | 401 |
|  | $ | 2,683 |  |  | $ | 1,502 |  |  | $ | 1,181 |  |  | $ | 2,683 |  |  | $ | 1,274 |  |  | $ | 1,409 |

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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 Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 47 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: 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=14024403&loc=d3e13854-109267 Reference 4: 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=14024403&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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