Incentive Plans and Stock-Based Compensation - Narrative (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Feb. 28, 2015	Nov. 29, 2014
Employee and Non-Employee Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	6,600,000
Number of years which shares can be granted under the Plan	10 years
Annual vesting percentage	25.00%
Vesting period	4 years
Expiration period and term of equity award in years	10 years
Unrecognized compensation cost related to share-based arrangements which the Company expects to recognize	$ 6,080
Weighted-average period in years, over which the Company expects to recognize compensation cost related to share-based arrangements	2 years 25 days
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Unrecognized compensation cost related to share-based arrangements which the Company expects to recognize	2,287
Weighted-average period in years, over which the Company expects to recognize compensation cost related to share-based arrangements	3 years 2 months 12 days
Number of vested and deferred shares	8,489	19,457
Restricted Stock Unit Awards with Performance Conditions [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to share-based arrangements which the Company expects to recognize	$ 5,101
Weighted-average period in years, over which the Company expects to recognize compensation cost related to share-based arrangements	2 years 9 months

Expiration period and term of equity award in years

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- Definition

Number of years which shares can be granted under the Plan

+ References

No definition available.

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The number of restricted stock unit awards (an equity-based payment instrument, excluding stock (or unit) options), which have vested and have been deferred by the employee as of the reporting period.

+ References

No definition available.

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- Definition

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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- Definition

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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- Definition

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

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Percentage of vesting of 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 (a)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ 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 (a)(3)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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