The period of time, from the grant date until the time at which the share-based award expires.

No definition available.

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- Definition

Represents the forfeiture rates that is used in valuing an option on own shares.

+ References

No definition available.

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- Definition

Represents the number of shares authorized from the prior share-based plans of the entity.

+ References

No definition available.

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- Definition

The number of option holders as at the end of the reporting period.

+ References

No definition available.

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- Definition

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 50

-Paragraph 1

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

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

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

+ 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 (h)(1)(i)

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ 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 (f)(2)(iii)

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

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- Definition

Expected term of share-based compensation awards, 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 S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.D.2)

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-Name Accounting Standards Codification

-Topic 718

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-Section 50

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section D

-Subsection 2

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 2

-Subparagraph (f)(2)(ii)

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ 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 (f)(2)(iv)

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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)

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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

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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-Paragraph 2

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Stockholders' Equity (Details 2) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Nov. 30, 2014	Nov. 30, 2013	Dec. 01, 2012	Nov. 29, 2014 Option	Nov. 28, 2009
Other Disclosures
Number of option holders				14
2009 Stock Option Plan
Griffin Stock Option Plan
Granted (in shares)	8,532	8,112	10,996
2009 Stock Option Plan \| Minimum \| Employees
Other Disclosures
Forfeiture rates (as a percent)			30.30%
2009 Stock Option Plan \| Maximum \| Employees
Other Disclosures
Forfeiture rates (as a percent)			46.60%
2009 Stock Option Plan \| Employee and directors' stock options
Griffin Stock Option Plan
Number of shares authorized					386,926
Number of shares available for issuance under prior plans included in total shares authorized					161,926
Expiration term	10 years
Assumptions used in determining the fair value of the stock options granted
Expected volatility (as a percent)	38.90%	40.30%	39.60%
Range of risk free interest rate (as a percent)	2.16%	1.33%	1.02%
Expected option term	8 years 6 months	8 years 6 months	8 years 6 months
Annual dividend yield (as a percent)	0.70%	0.70%	0.00%
Compensation expense for stock options
Compensation expense	208	467	604
Related tax benefit	63	114	148
Other Disclosures
Forfeiture rates (as a percent)	0.00%
2009 Stock Option Plan \| Employee and directors' stock options \| Non-employee directors
Griffin Stock Option Plan
Fair values of stock options granted (in dollars per share)	12.42		10.66
Granted (in shares)	8,532	8,112	10,996
2009 Stock Option Plan \| Employee and directors' stock options \| Minimum
Other Disclosures
Forfeiture rates (as a percent)		22.60%
2009 Stock Option Plan \| Employee and directors' stock options \| Minimum \| Non-employee directors
Griffin Stock Option Plan
Fair values of stock options granted (in dollars per share)		12.94
2009 Stock Option Plan \| Employee and directors' stock options \| Maximum
Assumptions used in determining the fair value of the stock options granted
Expected volatility (as a percent)			41.10%
Range of risk free interest rate (as a percent)			1.19%
Annual dividend yield (as a percent)			0.70%
Other Disclosures
Forfeiture rates (as a percent)		25.80%
2009 Stock Option Plan \| Employee and directors' stock options \| Maximum \| Non-employee directors
Griffin Stock Option Plan
Fair values of stock options granted (in dollars per share)			14.89
Continuing Operations [Member] \| 2009 Stock Option Plan \| Employee and directors' stock options
Compensation expense for stock options
Compensation expense	338	415	545
Related tax benefit	78	109	143
Discontinued Operations [Member] \| 2009 Stock Option Plan \| Employee and directors' stock options
Compensation expense for stock options
Compensation expense	(130)	52	59
Related tax benefit	(15)	5	5