Significant Events Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Apr. 30, 2018	Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2018	Aug. 31, 2017
Business Acquisition [Line Items]
Impairment of assets held for sale				$ 205	$ 0
(Gain) loss on sale of assets, net of disposition costs		$ 15	$ (76,706)	(32,052)	(76,706)
Local programming and marketing agreement fee				700
Restructuring Charges		0		1,178
St Louis [Member]
Business Acquisition [Line Items]
Gross Proceeds from Divestiture of Business	$ 60,000
Net Proceeds from Divestiture of Businesses	40,500
(Gain) loss on sale of assets, net of disposition costs	$ 32,400	$ 0	$ 0	32,383	$ 0
Local programming and marketing agreement fee				700
Restructuring Charges				$ 1,200