Stockholders' Equity (Details 4) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Nov. 30, 2013	Dec. 01, 2012	Dec. 03, 2011
Weighted Avg. Exercise Price
Intrinsic value of options exercised (in dollars)	$ 114	$ 49	$ 137
2009 Stock Option Plan
Activity under the Griffin Stock Option Plan
Outstanding at beginning of period (in shares)	243,841	244,518	149,611
Granted (in shares)	8,112	10,996	113,212
Exercised (in shares)	(6,776)	(6,741)	(10,667)
Forfeited (in shares)	(5,500)	(4,932)	(7,638)
Outstanding at end of period (in shares)	239,677	243,841	244,518
Weighted Avg. Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 29.88	$ 29.79	$ 29.69
Granted (in dollars per share)	$ 29.58	$ 25.45	$ 28.68
Exercised (in dollars per share)	$ 11.81	$ 17.80	$ 17.45
Forfeited (in dollars per share)	$ 31.12	$ 32.43	$ 28.47
Outstanding at end of period (in dollars per share)	$ 30.35	$ 29.88	$ 29.79