Stockholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended			9 Months Ended
	Aug. 31, 2014	Feb. 28, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013
Per Share Results
(Loss) income from continuing operations for computation of basic and diluted per share results, net of tax	$ (198)		$ (490)	$ (1,521)	$ 800
Loss from discontinued operations for computation of basic and diluted per share results, net of tax	26		(439)	144	(531)
Net (loss) income	$ (172)		$ (929)	$ (1,377)	$ 269
Weighted average shares outstanding for computation of basic per share results	5,150,000		5,146,000	5,148,000	5,143,000
Incremental shares from assumed exercise of Griffin stock options					7,000
Adjusted weighted average shares for computation of diluted per share results	5,150,000		5,146,000	5,148,000	5,150,000
Incremental shares from assumed exercise of stock options excluded due to anti-dilutive effect	3,000	10,000		12,000