Stockholders' Equity - Accumulated Other Comprehensive Income Activity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2017	May 31, 2016	May 31, 2017	May 31, 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	$ (764)	$ (57)	(433)	(1,454)
Total reclassifications included in net income (loss)	(218)	(214)	(427)	(427)
Total other comprehensive (loss) income, net of tax	(546)	157	(6)	(1,027)
Balance at end of period	93,281	91,231	93,281	91,231
Accumulated Other Comprehensive 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			(433)	(1,454)
Total reclassifications included in net income (loss)			(427)	(427)
Total other comprehensive (loss) income, net of tax	(546)	157	(6)	(1,027)
Balance at end of period	(1,055)	(2,112)	(1,055)	(2,112)
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	(829)	26	(625)	(1,115)
Total reclassifications included in net income (loss)			(427)	(427)
Total other comprehensive (loss) income, net of tax			(198)	(688)
Balance at end of period	(1,260)	(2,432)	(1,260)	(2,432)
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			192	(339)
Total other comprehensive (loss) income, net of tax			192	(339)
Balance at end of period	$ 205	$ 320	$ 205	$ 320