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Marketable Securities | 9 Months Ended
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Jan. 27, 2018
Marketable Securities [Abstract] |
Marketable Securities | Note 5. 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 ASC 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 accumulated other comprehensive loss. As it relates to fixed income marketable securities, it is not likely we will be required to sell any of these investments before recovery of the entire amortized cost basis. In addition, as of January 27, 2018, we anticipate we will recover the entire amortized cost basis of such fixed income securities, and we have determined no other-than-temporary impairments associated with credit losses were required to be recognized. 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 traded in the market to estimate fair value. As of January 27, 2018 and April 29, 2017, our available-for-sale securities consisted of the following:
| Amortized Cost |  | Unrealized Gains |  | Unrealized Losses |  | Fair Value
Balance as of January 27, 2018 |  |  |  |  |  |  |
Certificates of deposit | $ | 8,918 |  |  | $ | — |  |  | $ | — |  |  | $ | 8,918 |
U.S. Government sponsored entities | 9,104 |  |  | — |  |  | (73 | ) |  | 9,031 |
Municipal bonds | 6,001 |  |  | — |  |  | (13 | ) |  | 5,988 |
| $ | 24,023 |  |  | $ | — |  |  | $ | (86 | ) |  | $ | 23,937 |
Balance as of April 29, 2017 |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit | $ | 12,487 |  |  | $ | — |  |  | $ | — |  |  | $ | 12,487 |
U.S. Government securities | 400 |  |  | — |  |  | — |  |  | 400 |
U.S. Government sponsored entities | 12,260 |  |  | — |  |  | (22 | ) |  | 12,238 |
Municipal bonds | 7,574 |  |  | 14 |  |  | — |  |  | 7,588 |
| $ | 32,721 |  |  | $ | 14 |  |  | $ | (22 | ) |  | $ | 32,713 |
Realized gains or losses on investments are recorded in our consolidated statements of operations as other income (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 into earnings based on the specific identification method. In the nine months ended January 27, 2018 and January 28, 2017, the reclassifications from accumulated other comprehensive loss to earnings were immaterial. 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 January 27, 2018 were as follows:
| Less than 12 months |  | 1-5 Years |  | Total
Certificates of deposit | $ | 5,207 |  |  | $ | 3,711 |  |  | $ | 8,918 |
U.S. Government sponsored entities | 999 |  |  | 8,032 |  |  | 9,031 |
Municipal bonds | 2,598 |  |  | 3,390 |  |  | 5,988 |
| $ | 8,804 |  |  | $ | 15,133 |  |  | $ | 23,937 |

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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 -URI http://asc.fasb.org/topic&trid=2196928 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=4738149 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2176304 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2324412 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2209399 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2289146 + Details
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