Stockholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 01, 2012	Aug. 27, 2011	Sep. 01, 2012	Aug. 27, 2011
Earnings Per Share
Income (Loss) from continuing operations for computation of basic and diluted per share results, net of tax	$ 1,882	$ (568)	$ 345	$ (3,600)
Income from discontinued operation for computation of basic and diluted per share results, net of tax		140	1,647	414
Net income (loss)	$ 1,882	$ (428)	$ 1,992	$ (3,186)
Weighted average shares outstanding for computation of basic per share results	5,139,000	5,134,000	5,137,000	5,129,000
Incremental shares from assumed exercise of Griffin stock options	4,000		4,000
Adjusted weighted average shares for computation of diluted per share results	5,143,000	5,134,000	5,141,000	5,129,000
Incremental shares from assumed exercise of stock options excluded due to anti-dilutive effect		6,000		8,000