Stockholders' Equity - Accumulated Other Comprehensive Income Activity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2018	May 31, 2017	May 31, 2018	May 31, 2017
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the year			$ (284)
Other comprehensive income before reclassifications	$ 7	$ (764)	1,956	$ (433)
Reclassifications included in net income (loss)	146	218	338	427
Balance at the end of the year	1,974		1,974
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)
Other comprehensive income before reclassifications	7	(829)	1,956	(625)
Reclassifications included in net income (loss)			338	427
Adoption of ASU 2018-02 - reclassification to retained	(36)		(36)
Net activity for other comprehensive income			2,258	(198)
Balance at the end of the year	1,974	(1,260)	1,974	(1,260)
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 income before reclassifications				192
Net activity for other comprehensive income				192
Balance at the end of the year		205		205
Accumulated Other Comprehensive Loss
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the year			(284)	(1,049)
Other comprehensive income before reclassifications			1,956	(433)
Reclassifications included in net income (loss)			338	427
Adoption of ASU 2018-02 - reclassification to retained	(36)		(36)
Net activity for other comprehensive income			2,258	(6)
Balance at the end of the year	$ 1,974	$ (1,055)	$ 1,974	$ (1,055)