Stockholders' Equity - Accumulated Other Comprehensive Income Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2018	Nov. 30, 2017	Nov. 30, 2016
Available for Sale Securities
Shares of Centaur Media common stock sold		1,952,462
Reclassed from accumulated other comprehensive loss		$ 172
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the year	$ (284)
Other comprehensive income before reclassifications	2,242	114	$ (820)
Reclassifications included in net (loss) income	473	651	856
Balance at the end of the year	2,395	(284)
Unrealized Gain (Loss) on Cash Flow Hedges
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the year	(284)	(1,062)	(1,744)
Other comprehensive income before reclassifications	2,242	(45)	(174)
Reclassifications included in net (loss) income	473	823	856
Adoption of ASU 2018-02 - reclassification of deferred taxes to retained earnings	(36)
Net activity for other comprehensive income	2,679	778	682
Balance at the end of the year	2,395	(284)	(1,062)
Unrealized Gain (Loss) on Investment in Centaur Media
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the year		13	659
Other comprehensive income before reclassifications		159	(646)
Reclassifications included in net (loss) income		(172)
Net activity for other comprehensive income		(13)	(646)
Balance at the end of the year			13
Accumulated Other Comprehensive Loss
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the year	(284)	(1,049)	(1,085)
Other comprehensive income before reclassifications	2,242	114	(820)
Reclassifications included in net (loss) income	473	651	856
Adoption of ASU 2018-02 - reclassification of deferred taxes to retained earnings	(36)
Net activity for other comprehensive income	2,679	765	36
Balance at the end of the year	$ 2,395	$ (284)	$ (1,049)