Significant Events Additional Information (Details) $ in Millions	9 Months Ended
	Nov. 30, 2017 USD ($)
Business Acquisition [Line Items]
Local programming and marketing agreement fee	$ 0.4
KPWR-FM [Member]
Business Acquisition [Line Items]
Gross Proceeds from Divestiture of Business	80.1
Net Proceeds from Divestiture of Businesses	$ 73.6