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Fair Value of Financial Instruments (Tables) | 9 Months Ended
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Jan. 27, 2013
Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis | The following table presents information about assets and liabilities measured at fair value on a recurring basis:
|  | Fair value measurements at January 27, 2013 using: |
|  | Quoted prices in active markets for identical assets |  |  | Significant other observable inputs |  |  | Significant unobservable inputs |  |  |  |
(amounts in thousands) |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Low Duration Bond Fund |  | $ | 2,066 |  |  |  | N/A |  |  |  | N/A |  |  | $ | 2,066 |
Limited Term Bond Fund |  |  | 2,070 |  |  |  | N/A |  |  |  | N/A |  |  |  | 2,070 |
Intermediate Term Bond Fund |  |  | 1,101 |  |  |  | N/A |  |  |  | N/A |  |  |  | 1,101 |
|  | Fair value measurements at April 29, 2012 using: |
|  | Quoted prices in active markets for identical assets |  |  | Significant other observable inputs |  |  | Significant unobservable inputs |  |  |  |
(amounts in thousands) |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Low Duration Bond Fund |  | $ | 2,049 |  |  |  | N/A |  |  |  | N/A |  |  | $ | 2,049 |
Limited Term Bond Fund |  |  | 2,037 |  |  |  | N/A |  |  |  | N/A |  |  |  | 2,037 |
Intermediate Term Bond Fund |  |  | 1,058 |  |  |  | N/A |  |  |  | N/A |  |  |  | 1,058 |

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, 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=7578670&loc=d3e19190-110258 + Details
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