Significant Events Additional Information (Details) $ in Thousands	6 Months Ended
	Aug. 31, 2017 USD ($)
Business Acquisition [Line Items]
Gross Proceeds from Divestiture of Business	$ 25,000
Local programming and marketing agreement fee	400
KPWR-FM [Member]
Business Acquisition [Line Items]
Gross Proceeds from Divestiture of Business	80,100
Net Proceeds from Divestiture of Businesses	$ 73,600