Stock Options and Stock Awards (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
Sep. 02, 2017	Aug. 27, 2016
Stock options and stock award Plans
Stock-based compensation costs	$ 15,362	$ 23,696
Shares
Total (in shares)	11,241	3,613
Stock options
Unrecognized pre-tax compensation costs related to unvested stock options and restricted stock grants
Unrecognized pre tax costs	$ 8,151
Weighted average amortization period	1 year 6 months
Stock options \| Maximum
Additional General Disclosures
Vesting period	4 years
Restricted stock
Shares
Granted (in shares)	11,241	3,613
Weighted Average Fair Value
Granted (in dollars per share)	$ 2.31	$ 7.73
Unrecognized pre-tax compensation costs related to unvested stock options and restricted stock grants
Unrecognized pre tax costs	$ 41,478
Weighted average amortization period	2 years 3 months 18 days
Restricted stock \| Maximum
Additional General Disclosures
Vesting period	3 years
Performance based
Stock options and stock award Plans
Stock-based compensation costs	$ 2,170	$ 9,112
Unrecognized pre-tax compensation costs related to unvested stock options and restricted stock grants
Unrecognized pre tax costs	$ 15,104
Weighted average amortization period	2 years 6 months

The total number of shares granted during the period.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
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Unrecognized cost of unvested share-based compensation awards.

+ References

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

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

No definition available.

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