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Fair Value Measurements (Tables) | 12 Months Ended
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Apr. 25, 2015
Fair Value Measurements |
Fair value hierarchy for assets measured at fair value on a recurring basis | The following table presents the fair value hierarchy for those assets measured at fair value on a recurring basis as of April 25, 2015, and April 26, 2014: Fiscal 2015
|  | Fair Value Measurements |
(Amounts in thousands) |  | Level 1(a) |  | Level 2(a) |  | Level 3 |
Assets |  |  |  |  |  |  |  |  |  |
Available-for-sale securities |  | $ | 1,552 |  | $ | 58,516 |  | $ | — |
Trading securities |  |  | — |  |  | 1,127 |  |  | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total |  | $ | 1,552 |  | $ | 59,643 |  | $ | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
| (a) |  | There were no transfers between Level 1 and Level 2 during fiscal 2015.
Fiscal 2014
|  | Fair Value Measurements |
(Amounts in thousands) |  | Level 1(b) |  | Level 2(b) |  | Level 3 |
Assets |  |  |  |  |  |  |  |  |  |
Available-for-sale securities |  | $ | 1,521 |  | $ | 57,630 |  | $ | — |
Trading securities |  |  | — |  |  | 1,787 |  |  | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total |  | $ | 1,521 |  | $ | 59,417 |  | $ | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
| (b) |  | There were no transfers between Level 1 and Level 2 during fiscal 2014.

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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