Stock-Based Compensation (Details) - USD ($)	12 Months Ended
Mar. 04, 2017	Feb. 27, 2016	Feb. 28, 2015
Award transactions on stock options
Outstanding shares awards exercised	(163,000)	(200,000)	(146,000)
Award transactions on stock options, Weighted Average Exercise Price
Weighted average exercise price, Beginning	$ 11.81
Weighted average exercise price, Awards exercised	14.34
Weighted average exercise price, Ending	9.90	$ 11.81
Weighted average exercise price, Exercisable	$ 9.90
Weighted average remaining contractual life, Outstanding	4 years
Weighted average remaining contractual life, Exercisable	4 years
Aggregate intrinsic value, Outstanding	$ 11,101,695
Aggregate intrinsic value, Exercisable	$ 11,101,695
Options/SARs Outstanding
Award transactions on stock options
Outstanding, Beginning	403,714
Outstanding shares awards exercised	(173,813)
Outstanding, Ending	229,901	403,714
Outstanding shares exercisable	229,901

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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