Stockholders' Equity - Accumulated Other Comprehensive Income Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2017
Available for Sale Securities
Reclassed from accumulated other comprehensive loss		$ 172
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the year	$ 2,395
Other comprehensive (loss) income before reclassifications	(5,560)	2,242	$ 114
Reclassifications included in net income (loss)	24	473	651
Balance at the end of the year	(3,141)	2,395
Unrealized Gain (Loss) on Cash Flow Hedges
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the year	2,395	(284)	(1,062)
Other comprehensive (loss) income before reclassifications	(5,560)	2,242	(45)
Reclassifications included in net income (loss)	24	473	823
Adoption of ASU 2018-02 - reclassification of deferred taxes to retained earnings		(36)
Net activity for other comprehensive income	(5,536)	2,679	778
Balance at the end of the year	(3,141)	2,395	(284)
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
Other comprehensive (loss) income before reclassifications			159
Reclassifications included in net income (loss)			(172)
Net activity for other comprehensive income			(13)
Accumulated Other Comprehensive Income (Loss)
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the year	2,395	(284)	(1,049)
Other comprehensive (loss) income before reclassifications	(5,560)	2,242	114
Reclassifications included in net income (loss)	24	473	651
Adoption of ASU 2018-02 - reclassification of deferred taxes to retained earnings		(36)
Net activity for other comprehensive income	(5,536)	2,679	765
Balance at the end of the year	$ (3,141)	$ 2,395	$ (284)