Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Nov. 30, 2014	Nov. 30, 2013	Dec. 01, 2012
Income tax benefit (expense) on continuing operations
Current state and local	$ 375
Deferred federal	356	(1,076)	(172)
Deferred state and local	(452)	84	(98)
Total income tax (provision) benefit	(96)	(992)	(270)
Income Taxes, additional disclosures
Unrecognized tax benefit	1,170
Reduction in deferred tax asset related to non-qualified stock options as a result of exercises and forfeitures on those options	4	0	38
Income tax expense (benefits) from discontinued operations	(115)	4,411	(1,077)
Effect on income tax benefit for valuation allowance	24	93	44
Federal income tax expense benefit of the change in valuation allowance	8	33	15
Deferred tax (expense) benefit included in other comprehensive (loss) income
Mark to market adjustments on Centaur Media plc	17	213	(427)
Measurement of the funded status of the defined postretirement plan	181	(40)	29
Fair value adjustment of Griffin's cash flow hedges	37	(359)	287
Total income tax (expense) benefit included in other comprehensive (loss) income	235	(186)	(111)
Differences between income tax benefits at the United States statutory income tax rates and the actual income tax benefits on continuing operations
Tax (provision) benefit at statutory rate	403	(1,016)	(163)
State and local taxes, including valuation allowance, net of federal tax effect	(457)	55	(64)
Permanent items	(43)	(39)	(50)
Other	1	8	7
Total income tax (provision) benefit	(96)	(992)	(270)
Deferred tax assets:
Inventories		4,397
Federal net operating loss carryforwards	3,417	1,507
Retirement benefit plans	1,496	1,500
State net operating loss carryforwards	670	937
Cash flow hedges	859	821
Non-qualified stock options	794	733
Deferred revenue	2,836	485
Charitable contributions	239	243
Conditional asset retirement obligations	112	114
Allowance for doubtful accounts receivable		52
Investment in Centaur Media plc	(22)	45
Other	40	372
Total deferred tax assets	10,463	11,161
Valuation allowance	(395)	(379)
Net deferred tax assets	10,068	10,782
Deferred tax liabilities:
Real estate assets	(2,547)	(3,272)
Deferred rent	(882)	(926)
Prepaid insurance	(142)	(180)
Property and equipment	(39)	(104)
Other	(440)	(370)
Total deferred tax liabilities	(4,072)	(4,807)
Net total deferred tax assets	5,996	5,975
Deferred income taxes
Asset	10,068	10,782
Liability	(4,072)	(4,807)
Net total deferred tax assets	$ 5,996	$ 5,975