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Fair Value Measurements (Details) - USD ($) $ in Thousands | Feb. 27, 2016 | Feb. 28, 2015
--- | --- | ---
Cash equivalents |  |
Total cash equivalents | $ 52,973 |
Available for sale securities |  |
Total available for sale securities | 30,173 |
Long-term securities |  |
Total assets at fair value | 95,665 | $ 45,673
Money market funds |  |
Cash equivalents |  |
Total cash equivalents | 23,199 | 34,386
Commercial paper |  |
Cash equivalents |  |
Total cash equivalents | 29,774 |
Mutual fund |  |
Available for sale securities |  |
Total available for sale securities | 30,123 |
Long-term securities |  |
Total long-term securities |  | 305
Municipal bonds |  |
Available for sale securities |  |
Total available for sale securities | 50 | 327
Long-term securities |  |
Total long-term securities | 12,519 | 10,655
Quoted Prices in Active Markets (Level 1) |  |
Cash equivalents |  |
Total cash equivalents | 23,199 |
Available for sale securities |  |
Total available for sale securities | 30,123 |
Long-term securities |  |
Total assets at fair value | 53,322 | 34,691
Quoted Prices in Active Markets (Level 1) | Money market funds |  |
Cash equivalents |  |
Total cash equivalents | 23,199 | 34,386
Quoted Prices in Active Markets (Level 1) | Commercial paper |  |
Cash equivalents |  |
Total cash equivalents | 0 |
Quoted Prices in Active Markets (Level 1) | Mutual fund |  |
Available for sale securities |  |
Total available for sale securities | 30,123 |
Long-term securities |  |
Total long-term securities |  | 305
Quoted Prices in Active Markets (Level 1) | Municipal bonds |  |
Available for sale securities |  |
Total available for sale securities | 0 | 0
Long-term securities |  |
Total long-term securities | 0 | 0
Other Observable Inputs (Level 2) |  |
Cash equivalents |  |
Total cash equivalents | 29,774 |
Available for sale securities |  |
Total available for sale securities | 50 |
Long-term securities |  |
Total assets at fair value | 42,343 | 10,982
Other Observable Inputs (Level 2) | Money market funds |  |
Cash equivalents |  |
Total cash equivalents | 0 | 0
Other Observable Inputs (Level 2) | Commercial paper |  |
Cash equivalents |  |
Total cash equivalents | 29,774 |
Other Observable Inputs (Level 2) | Mutual fund |  |
Available for sale securities |  |
Total available for sale securities | 0 |
Long-term securities |  |
Total long-term securities |  | 0
Other Observable Inputs (Level 2) | Municipal bonds |  |
Available for sale securities |  |
Total available for sale securities | 50 | 327
Long-term securities |  |
Total long-term securities | $ 12,519 | $ 10,655

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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=36462937&loc=d3e19207-110258 + 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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