Stockholders' Equity (Details 3) (2009 Stock Option Plan, USD $)	6 Months Ended
	May 31, 2014	Jun. 01, 2013
2009 Stock Option Plan
Activity under the Griffin Stock Option Plan
Outstanding at beginning of period (in shares)	239,677	243,841
Granted (in shares)	8,532	8,112
Exercised (in shares)	(3,208)	(6,776)
Forfeited (in shares)	(23,000)
Outstanding at end of period (in shares)	222,001	245,177
Weighted Avg. Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 30.35	$ 29.88
Granted (in dollars per share)	$ 28.12	$ 29.58
Exercised (in dollars per share)	$ 24.94	$ 11.81
Forfeited (in dollars per share)	$ 30.27
Outstanding at end of period (in dollars per share)	$ 30.35	$ 30.37