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Marketable Securities (Details) - USD ($) $ in Thousands | Feb. 27, 2016 | Feb. 28, 2015
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Amortized cost, gross unrealized gains and losses, and estimated fair values of investments available for sale |  |
Amortized Cost | $ 42,571 | $ 10,973
Gross Unrealized Gains | 285 | 127
Gross Unrealized Losses | (164) | (118)
Estimated Fair Value | 42,692 | 10,982
Mutual fund |  |
Amortized cost, gross unrealized gains and losses, and estimated fair values of investments available for sale |  |
Amortized Cost | 30,178 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | (55) |
Estimated Fair Value | 30,123 |
Municipal bonds |  |
Amortized cost, gross unrealized gains and losses, and estimated fair values of investments available for sale |  |
Amortized Cost | 12,393 | 10,973
Gross Unrealized Gains | 285 | 127
Gross Unrealized Losses | (109) | (118)
Estimated Fair Value | $ 12,569 | $ 10,982

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- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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