Stockholders' Equity (Details 6) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	May. 31, 2015	Feb. 28, 2015	May. 31, 2014	Feb. 28, 2014	May. 31, 2015	May. 31, 2014
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the period		$ (835)		$ (449)	$ (835)	$ (449)
Other comprehensive (loss) income before reclassifications	$ 144		$ (433)		(167)	(5)
Reclassifications included in net (loss) income	191		(144)		368	(191)
Total other comprehensive income, net of tax					201	(196)
Balance at the end of the period	(634)		(645)		(634)	(645)
Reclassifications included in net loss:
Termination of postretirement benefits program			(485)			(485)
Loss on cash flow hedges (interest expense)	303		253		584	503
Realized gain on sale of Centaur Media (gain on sale)						(321)
Total reclassifications included in net income (loss)	303		(232)		584	(303)
Mark to market adjustment on Centaur Media for a (decrease) increase in the foreign currency exchange rate	(23)		1		(49)	62
Mark to market adjustment on Centaur Media for an increase in fair value	448		(327)		498	441
Decrease in fair value adjustments on Griffin's cash flow hedges	(209)		(349)		(727)	(526)
Total other changes in other comprehensive (loss) income	216		(675)		(278)	(23)
Total other comprehensive (loss) income	519		(907)		306	(326)
Reclassifications included in net loss:
Termination of postretirement benefits program tax			181			181
Loss on cash flow hedges (interest expense)	(112)		(93)		(216)	(186)
Realized gain on sale of Centaur Media (gain on sale)						117
Total reclassifications included in net loss	(112)		88		(216)	112
Mark to market adjustment on Centaur Media for a (decrease) increase in the foreign currency exchange rate	8		(1)		17	(22)
Mark to market adjustment on Centaur Media for an increase in fair value	(157)		115		(175)	(154)
Decrease in fair value adjustments on Griffin's cash flow hedges	77		128		269	194
Total change in other comprehensive (loss) income	(72)		242		111	18
Total other comprehensive (loss) income	(184)		330		(105)	130
Reclassifications included in net loss:
Termination of postretirement benefits program net of tax			(304)			(304)
Loss on cash flow hedges (interest expense)	191		160		368	317
Realized gain on sale of Centaur Media (gain on sale)						(204)
Total reclassifications included in net loss	191		(144)		368	(191)
Mark to market adjustment on Centaur Media for a (decrease) increase in the foreign currency exchange rate	(15)				(32)	40
Mark to market adjustment on Centaur Media for an increase in fair value	291		(212)		323	287
Decrease in fair value adjustments on Griffin's cash flow hedges	(132)		(221)		(458)	(332)
Total change in other comprehensive (loss) income	144		(433)		(167)	(5)
Total other comprehensive income (loss), net of tax	335		(577)		201	(196)
Cash Dividend
Cash dividend paid		1,030		1,029	1,030	1,029
General and Administrative Expense
Reclassifications included in net loss:
Termination of postretirement benefits program, net of tax			21			21
Discontinued operations
Reclassifications included in net loss:
Termination of postretirement benefits program, net of tax			283			283
Unrealized loss on cash flow hedges
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the period		(1,464)		(1,401)	(1,464)	(1,401)
Other comprehensive (loss) income before reclassifications					(458)	(332)
Reclassifications included in net (loss) income					368	317
Total other comprehensive income, net of tax					(90)	(15)
Balance at the end of the period	(1,554)		(1,416)		(1,554)	(1,416)
Reclassifications included in net loss:
Total reclassifications included in net loss					368	317
Total change in other comprehensive (loss) income					(458)	(332)
Unrealized gain on investment in Centaur Media
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the period		$ 629		648	629	648
Other comprehensive (loss) income before reclassifications					291	327
Reclassifications included in net (loss) income						(204)
Total other comprehensive income, net of tax					291	123
Balance at the end of the period	$ 920		$ 771		920	771
Reclassifications included in net loss:
Total reclassifications included in net loss						(204)
Total change in other comprehensive (loss) income					$ 291	327
Actuarial gain on postretirement benefit program
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the period				$ 304		304
Reclassifications included in net (loss) income						(304)
Total other comprehensive income, net of tax						(304)
Reclassifications included in net loss:
Total reclassifications included in net loss						$ (304)