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Marketable Securities | 3 Months Ended
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Jul. 28, 2012
Marketable Securities [Abstract] |
Marketable Securities | Marketable Securities We have a cash management program which provides for the investment of cash balances not used in current operations. We classify our investments in marketable securities as available-for-sale in accordance with the provisions of ASU 320, Investments – Debt and Equity Securities. Marketable securities classified as available-for-sale are reported at fair value with unrealized gains or losses, net of tax, reported in other comprehensive income (loss). Unrealized losses considered to be “other-than-temporary” are recognized currently in earnings. The cost of securities sold is based on the specific identification method. Where quoted market prices are not available, we use the market price of similar types of securities that are traded in the market to estimate fair value. As of July 28, 2012 and April 28, 2012, our available-for-sale securities consisted of the following:
| Amortized Cost |  | Unrealized Gains |  | Unrealized Losses |  | Fair Value
Balance as of July 28, 2012: |  |  |  |  |  |  |
Certificates of deposit | $ | 7,162 |  |  | $ | 2 |  |  | $ | — |  |  | $ | 7,164 |
U.S. Government securities | 6,500 |  |  | 39 |  |  | — |  |  | 6,539 |
U.S. Government sponsored entities | 5,202 |  |  | 1 |  |  | — |  |  | 5,203 |
Municipal obligations | 6,124 |  |  | 20 |  |  | — |  |  | 6,144 |
| $ | 24,988 |  |  | $ | 62 |  |  | $ | — |  |  | $ | 25,050 |
Balance as of April 28, 2012: |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit | $ | 7,657 |  |  | $ | — |  |  | $ | — |  |  | $ | 7,657 |
U.S. Government securities | 7,507 |  |  | 49 |  |  | — |  |  | 7,556 |
U.S. Government sponsored entities | 4,503 |  |  | 2 |  |  | — |  |  | 4,505 |
Municipal obligations | 5,517 |  |  | 23 |  |  | — |  |  | 5,540 |
| $ | 25,184 |  |  | $ | 74 |  |  | $ | — |  |  | $ | 25,258 |
Realized gains or losses on investments are recorded in our consolidated statements of operations within other expense, net. Upon the sale of a security classified as available-for-sale, the security’s specific unrealized gain (loss) is reclassified out of "accumulated other comprehensive (loss) income” into earnings based on the specific identification method. In the three months ended July 28, 2012 and July 30, 2011, the reclassifications from accumulated other comprehensive (loss) income to net assets were immaterial. Realized gains and losses on sales and maturities of investments were immaterial in the three months ended July 28, 2012 and July 30, 2011. All available-for-sale securities are classified as current assets, as they are readily available to support our current operating needs. The contractual maturities of available-for-sale debt securities as of July 28, 2012 were as follows:
| Less than 12 months |  | Greater than 12 months |  | Total
Certificates of deposit | $ | 5,187 |  |  | $ | 1,977 |  |  | $ | 7,164 |
U.S. Government securities | 3,510 |  |  | 3,029 |  |  | 6,539 |
U.S. Government sponsored agencies | — |  |  | 5,203 |  |  | 5,203 |
Municipal obligations | 1,587 |  |  | 4,557 |  |  | 6,144 |
| $ | 10,284 |  |  | $ | 14,766 |  |  | $ | 25,050 |

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27405-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 3, 19, 20, 21, 22, 137 -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -Glossary Equity Security -URI http://asc.fasb.org/extlink&oid=6511694 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -Glossary Debt Security -URI http://asc.fasb.org/extlink&oid=6509901 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27232-111563 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27357-111563 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27161-111563 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563 + Details
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