Significant Events Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended
	Apr. 30, 2018	May 31, 2018	May 31, 2017
Business Acquisition [Line Items]
Gain on sale of assets, net of disposition costs		$ 32,067	$ 0
Local programming and marketing agreement fee		700
Restructuring Charges		1,200
St Louis [Member]
Business Acquisition [Line Items]
Gross Proceeds from Divestiture of Business	$ 60,000
Net Proceeds from Divestiture of Businesses	40,500
Gain on sale of assets, net of disposition costs	$ (32,400)	(32,398)	$ 0
Local programming and marketing agreement fee		700
Restructuring Charges		$ 1,200