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Fair Value Measurements (Details) - USD ($) $ in Thousands | Sep. 02, 2017 | Mar. 04, 2017
--- | --- | ---
Cash equivalents |  |
Total cash equivalents | $ 3,888 | $ 9,923
Total assets at fair value | 14,709 | 19,512
Money market funds |  |
Cash equivalents |  |
Total cash equivalents |  | 4,423
Commercial paper |  |
Cash equivalents |  |
Total cash equivalents | 2,000 | 5,500
Quoted Prices in Active Markets (Level 1) |  |
Cash equivalents |  |
Total cash equivalents | 1,888 | 4,423
Total assets at fair value | 1,888 | 4,423
Quoted Prices in Active Markets (Level 1) | Money market funds |  |
Cash equivalents |  |
Total cash equivalents |  | 4,423
Quoted Prices in Active Markets (Level 1) | Commercial paper |  |
Cash equivalents |  |
Total cash equivalents | 0 | 0
Quoted Prices in Active Markets (Level 1) | Municipal bonds |  |
Cash equivalents |  |
Available-for-sale Securities, Current |  | 0
Other Observable Inputs (Level 2) |  |
Cash equivalents |  |
Total cash equivalents | 2,000 | 5,500
Total assets at fair value | 12,821 | 15,089
Other Observable Inputs (Level 2) | Money market funds |  |
Cash equivalents |  |
Total cash equivalents |  | 0
Other Observable Inputs (Level 2) | Commercial paper |  |
Cash equivalents |  |
Total cash equivalents | 2,000 |
Money market funds |  |
Cash equivalents |  |
Total cash equivalents | 1,888 |
Money market funds | Quoted Prices in Active Markets (Level 1) |  |
Cash equivalents |  |
Total cash equivalents | 1,888 |
Money market funds | Other Observable Inputs (Level 2) |  |
Cash equivalents |  |
Total cash equivalents | 0 |
Municipal bonds |  |
Cash equivalents |  |
Available-for-sale Securities, Current | 464 | 548
Available-for-sale Securities, Noncurrent | 10,357 | 9,041
Municipal bonds | Quoted Prices in Active Markets (Level 1) |  |
Cash equivalents |  |
Available-for-sale Securities, Current | 0 |
Available-for-sale Securities, Noncurrent | 0 | 0
Municipal bonds | Other Observable Inputs (Level 2) |  |
Cash equivalents |  |
Available-for-sale Securities, Current | 464 | 548
Available-for-sale Securities, Noncurrent | $ 10,357 | $ 9,041

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26626-111562 + Details
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- Definition Investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Available-for-Sale Securities -URI http://asc.fasb.org/extlink&oid=6505594 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26626-111562 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 + Details
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