Stockholders' Equity (Details 6) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Feb. 28, 2015	Feb. 28, 2014	Nov. 30, 2013
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the period	$ (835)	$ (449)
Other comprehensive (loss) income before reclassifications	(311)	428
Reclassifications included in net loss	177	(47)
Total other comprehensive income, net of tax	(134)	381
Balance at the end of the period	(969)	(68)
Reclassifications included in net loss:
Loss on cash flow hedges (interest expense)	281	250
Realized gain on sale of Centaur Media (gain on sale)		(321)
Total reclassifications included in net loss	281	(71)
Mark to market adjustment on Centaur Media for a (decrease) increase in the foreign currency exchange rate	(26)	61
Mark to market adjustment on Centaur Media for an increase in fair value	50	768
Decrease in fair value adjustments on Griffin's cash flow hedges	(518)	(177)
Total other changes in other comprehensive (loss) income	(494)	652
Total other comprehensive (loss) income	(213)	581
Reclassifications included in net loss:
Loss on cash flow hedges (interest expense)	(104)	(93)
Realized gain on sale of Centaur Media (gain on sale)		117
Total reclassifications included in net loss	(104)	24
Mark to market adjustment on Centaur Media for a (decrease) increase in the foreign currency exchange rate	9	(21)
Mark to market adjustment on Centaur Media for an increase in fair value	(18)	(269)
Decrease in fair value adjustments on Griffin's cash flow hedges	192	66
Total change in other comprehensive (loss) income	183	(224)
Total other comprehensive (loss) income	79	(200)
Reclassifications included in net loss:
Loss on cash flow hedges (interest expense)	177	157
Realized gain on sale of Centaur Media (gain on sale)		(204)
Total reclassifications included in net loss	177	(47)
Mark to market adjustment on Centaur Media for a (decrease) increase in the foreign currency exchange rate	(17)	40
Mark to market adjustment on Centaur Media for an increase in fair value	32	499
Decrease in fair value adjustments on Griffin's cash flow hedges	(326)	(111)
Total change in other comprehensive (loss) income	(311)	428
Total other comprehensive (loss) income, net of tax	(134)	381
Cash Dividend
Cash dividend paid	1,030us-gaap_PaymentsOfDividendsCommonStock	1,029us-gaap_PaymentsOfDividendsCommonStock
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)
Other comprehensive (loss) income before reclassifications	(326)	(111)
Reclassifications included in net loss	177	157
Total other comprehensive income, net of tax	(149)	46
Balance at the end of the period	(1,613)	(1,355)
Reclassifications included in net loss:
Total reclassifications included in net loss	177	157
Total change in other comprehensive (loss) income	(326)	(111)
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
Other comprehensive (loss) income before reclassifications	15	539
Reclassifications included in net loss		(204)
Total other comprehensive income, net of tax	15	335
Balance at the end of the period	644	983
Reclassifications included in net loss:
Total reclassifications included in net loss		(204)
Total change in other comprehensive (loss) income	15	539
Actuarial gain on postretirement benefit program
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the period			304
Balance at the end of the period		$ 304	$ 304

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