Marketable Securities (Details) - USD ($) $ in Thousands	Feb. 27, 2016	Feb. 28, 2015
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

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

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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
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-Publisher FASB
-Name Accounting Standards Codification
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Amount of debt securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
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