Stockholders' Equity (Details 6) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Aug. 31, 2015	Feb. 28, 2015	Aug. 31, 2014	Feb. 28, 2014	Aug. 31, 2015	Aug. 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	$ 69		$ (205)		(98)	(210)
Reclassifications included in net income (loss)	189		158		557	(33)
Total other comprehensive income, net of tax					459	(243)
Balance at the end of the period	(376)		(692)		(376)	(692)
Reclassifications included in net loss:
Termination of postretirement benefits program						(485)
Loss on cash flow hedges (interest expense)	300		252		884	755
Realized gain on sale of Centaur Media (gain on sale)						(321)
Total reclassifications included in net income (loss)	300		252		884	(51)
Mark to market adjustment on Centaur Media for a (decrease) increase in the foreign currency exchange rate	10		(17)		(39)	45
Mark to market adjustment on Centaur Media for an increase (decrease) in fair value	179		(209)		677	232
Decrease in fair value adjustments on Griffin's cash flow hedges	(85)		(93)		(812)	(619)
Total other changes in other comprehensive (loss) income	104		(319)		(174)	(342)
Total other comprehensive (loss) income	404		(67)		710	(393)
Reclassifications included in net loss:
Termination of postretirement benefits program tax						181
Loss on cash flow hedges (interest expense)	(111)		(94)		(327)	(280)
Realized gain on sale of Centaur Media (gain on sale)						117
Total reclassifications included in net loss	(111)		(94)		(327)	18
Mark to market adjustment on Centaur Media for a (decrease) increase in the foreign currency exchange rate	(4)		6		13	(16)
Mark to market adjustment on Centaur Media for an increase in fair value	(62)		73		(237)	(81)
Decrease in fair value adjustments on Griffin's cash flow hedges	31		35		300	229
Total change in other comprehensive (loss) income	(35)		114		76	132
Total other comprehensive (loss) income	(146)		20		(251)	150
Reclassifications included in net loss:
Termination of postretirement benefits program net of tax						(304)
Loss on cash flow hedges (interest expense)	189		158		557	475
Realized gain on sale of Centaur Media (gain on sale)						(204)
Total reclassifications included in net loss	189		158		557	(33)
Mark to market adjustment on Centaur Media for a (decrease) increase in the foreign currency exchange rate	6		(11)		(26)	29
Mark to market adjustment on Centaur Media for an increase in fair value	117		(136)		440	151
Decrease in fair value adjustments on Griffin's cash flow hedges	(54)		(58)		(512)	(390)
Total change in other comprehensive (loss) income	69		(205)		(98)	(210)
Total other comprehensive income (loss), net of tax	258		(47)		459	(243)
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					(512)	(390)
Reclassifications included in net income (loss)					557	475
Total other comprehensive income, net of tax					45	85
Balance at the end of the period	(1,419)		(1,316)		(1,419)	(1,316)
Reclassifications included in net loss:
Total reclassifications included in net loss					557	475
Total change in other comprehensive (loss) income					(512)	(390)
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					414	180
Reclassifications included in net income (loss)						(204)
Total other comprehensive income, net of tax					414	(24)
Balance at the end of the period	$ 1,043		$ 624		1,043	624
Reclassifications included in net loss:
Total reclassifications included in net loss						(204)
Total change in other comprehensive (loss) income					$ 414	180
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 income (loss)						(304)
Total other comprehensive income, net of tax						(304)
Reclassifications included in net loss:
Total reclassifications included in net loss						$ (304)