Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2014
Income tax benefit (expense) on continuing operations
Current federal	$ 50	$ (83)
Deferred federal	(580)	(217)	$ 356
Deferred state and local	(205)	(80)	(452)
Total income tax provision	(735)	(380)	(96)
Income Taxes, additional disclosures
Charges for expected lower realization of state tax benefits	180	87	375
Unrecognized tax benefit	1,176
Tax effect of exercises and forfeitures of stock options	17	9	4
Income tax expense from discontinued operations			115
Deferred tax (expense) benefit included in other comprehensive (loss) income
Mark to market adjustments on Centaur Media plc	347	(16)	17
Measurement of the funded status of the defined postretirement program			181
Fair value adjustment of Griffin's cash flow hedges	(399)	164	37
Total other comprehensive income (loss), tax	(52)	148	235
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	(459)	(282)	403
State and local taxes, including valuation allowance, net of federal tax effect	(205)	(80)	(457)
Permanent items	(35)	(23)	(43)
Other	(36)	5	1
Total income tax provision	(735)	(380)	(96)
Deferred tax assets:
Federal net operating loss carryforwards	4,037	2,673
Deferred revenue	3,068	3,587
Retirement benefit plans	1,675	1,547
State net operating loss carryforwards	1,537	554
Non-qualified stock options	892	847
Cash flow hedges	623	1,022
Investment in Centaur Media plc	309	(38)
Charitable contribution carryforwards	127	179
Conditional asset retirement obligations	112	112
Other	46	51
Total deferred tax assets	12,426	10,534
Valuation allowance	(1,514)	(345)
Net deferred tax assets	10,912	10,189
Deferred tax liabilities:
Real estate assets	(4,244)	(2,666)
Deferred rent	(1,095)	(985)
Prepaid insurance	(107)	(113)
Property and equipment	(49)	(44)
Other	(433)	(543)
Total deferred tax liabilities	(5,928)	(4,351)
Net total deferred tax assets	4,984	5,838
Operating loss carryforwards
Accrual for uncertain income tax positions	0
State
Income Taxes, additional disclosures
Effect on income tax benefit for valuation allowance	1,798	(76)	24
Operating loss carryforwards
Net operating loss carryforwards	358
Federal
Income Taxes, additional disclosures
Effect on income tax benefit for valuation allowance	(629)	$ 26	$ (8)
Operating loss carryforwards
Net operating loss carryforwards	$ 11,535
Minimum | State
Operating loss carryforwards
Expiration period of operating loss carryforwards	10 years
Minimum | Federal
Operating loss carryforwards
Expiration period of operating loss carryforwards	14 years
Maximum | State
Operating loss carryforwards
Expiration period of operating loss carryforwards	20 years
Maximum | Federal
Operating loss carryforwards
Expiration period of operating loss carryforwards	20 years