Compensation Plans - Additional Information (Detail) (USD $)	3 Months Ended
Feb. 28, 2015	Feb. 28, 2014
Compensation Related Costs [Abstract]
Compensation costs	$ 48,000	$ 38,000
Number of years in which restricted stock awards amortized as compensation expense	4 years
Annual employee contributions	$ 21,250
Employee service share based compensation plan stock price	95.00%

Period In Which Restricted Stock Awards Amortized As Compensation Expense

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- Definition

Percentage of closing stock price used to purchase shares under the employee stock purchase plan.

+ References

No definition available.

+ Details

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- Definition

Share based compensation arrangement by maximum employee contributions to employee stock purchase plan.

+ References

No definition available.

+ Details

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- Details

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- Definition

The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

+ 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)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 710

-SubTopic 10

-Section 30

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363

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