Stockholders' Equity - Accumulated Other Comprehensive Income Activity (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Nov. 30, 2017
Available for Sale Securities
Shares of Centaur Media common stock sold			1,952,462
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the year	$ (284)
Other comprehensive income before reclassifications	1,949	$ 331
Reclassifications included in net loss	192	209
Total other comprehensive income, net of tax	2,141	540
Balance at the end of the year	1,821		$ (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)	(1,062)
Other comprehensive income before reclassifications	1,949	204
Reclassifications included in net loss	192	209
Adoption of ASU 2018-02 - reclassification to retained	(36)
Total other comprehensive income, net of tax	2,105	413
Balance at the end of the year	1,821	(649)	(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	13
Other comprehensive income before reclassifications		127
Total other comprehensive income, net of tax		127
Balance at the end of the year		140
Accumulated Other Comprehensive Loss
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the year	(284)	(1,049)	(1,049)
Other comprehensive income before reclassifications	1,949	331
Reclassifications included in net loss	192	209
Adoption of ASU 2018-02 - reclassification to retained	(36)
Total other comprehensive income, net of tax	2,141	540
Total other comprehensive income, net of tax	2,105
Balance at the end of the year	$ 1,821	$ (509)	$ (284)