Stockholders' Equity - Accumulated Other Comprehensive Income Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2017	Feb. 29, 2016
Change in accumulated other comprehensive loss, net of tax
Balance at beginning of period	$ 90,803	$ 94,809
Other comprehensive (loss) income before reclassifications	331	(1,397)
Reclassifications included in net loss	209	213
Total other comprehensive income (loss), net of tax	540	(1,184)
Balance at end of period	89,012	93,361
Accumulated Other Comprehensive Income (Loss)
Change in accumulated other comprehensive loss, net of tax
Balance at beginning of period	(1,049)	(1,085)
Other comprehensive (loss) income before reclassifications	331	(1,397)
Reclassifications included in net loss	209	213
Total other comprehensive income (loss), net of tax	540	(1,184)
Balance at end of period	(509)	(2,269)
Unrealized Gain (Loss) on Cash Flow Hedges
Change in accumulated other comprehensive loss, net of tax
Balance at beginning of period	(1,062)	(1,744)
Other comprehensive (loss) income before reclassifications	204	(1,141)
Reclassifications included in net loss	209	213
Total other comprehensive income (loss), net of tax	413	(928)
Balance at end of period	(649)	(2,672)
Unrealized Gain (Loss) on Investment in Centaur Media
Change in accumulated other comprehensive loss, net of tax
Balance at beginning of period	13	659
Other comprehensive (loss) income before reclassifications	127	(256)
Total other comprehensive income (loss), net of tax	127	(256)
Balance at end of period	$ 140	$ 403