Acquisitions and Dispositions - Additional Information (Details)	1 Months Ended			3 Months Ended		6 Months Ended	12 Months Ended
	Apr. 30, 2018 USD ($) Transaction	Jan. 30, 2017 Transaction	Nov. 30, 2016 USD ($)	Nov. 30, 2018 USD ($)	May 31, 2018 USD ($)	Aug. 31, 2018 USD ($)	Feb. 28, 2019 USD ($)	Feb. 28, 2018 USD ($)	Feb. 28, 2017 USD ($)
Business Acquisition [Line Items]
Gain on sale of radio and publishing assets, net of disposition costs							$ 31,817,000	$ 76,604,000	$ 23,557,000
LMA fees							11,050,000	10,752,000	10,331,000
Restructuring Charges							1,424,000
Minimum required sale proceeds								80,000,000
KPWR-FM
Business Acquisition [Line Items]
LMA fees								421,000	0
St Louis
Business Acquisition [Line Items]
Number of separate sales transactions | Transaction	2
Gross proceeds from divestiture of business	$ 60,000,000							80,100,000
Net proceeds from divestiture of businesses	40,500,000
Gain on sale of radio and publishing assets, net of disposition costs	32,100,000						32,148,000
LMA fees	$ 700,000
Restructuring Charges				$ 200,000		$ 1,200,000
KPWR-FM
Business Acquisition [Line Items]
Net proceeds from divestiture of businesses								73,600,000
Gain on sale of radio and publishing assets, net of disposition costs								76,745,000
Hour Magazines
Business Acquisition [Line Items]
Gross proceeds from divestiture of business									6,500,000
Net proceeds from divestiture of businesses									2,900,000
Gain on sale of radio and publishing assets, net of disposition costs					$ 200,000		(331,000)	(141,000)	2,677,000
Stated purchase price for divestiture of business									6,500,000
Proceeds from asset sale held in escrow									700,000
Business divestiture disposition costs									2,900,000
Proceeds from Legal Settlements					$ 450,000
Payments for Legal Settlements							$ 200,000
Business divestiture transaction advisory fees									1,000,000
Hour Magazines | Severance
Business Acquisition [Line Items]
Business divestiture disposition costs									1,600,000
Terre Haute Cluster
Business Acquisition [Line Items]
Number of separate sales transactions | Transaction		2
Gross proceeds from divestiture of business									5,200,000
Net proceeds from divestiture of businesses								$ 4,800,000
Gain on sale of radio and publishing assets, net of disposition costs									3,478,000
Texas Monthly
Business Acquisition [Line Items]
Gross proceeds from divestiture of business			$ 25,000,000
Net proceeds from divestiture of businesses			23,400,000
Gain on sale of radio and publishing assets, net of disposition costs			17,400,000						$ 17,402,000
Stated purchase price for divestiture of business			25,000,000
Business divestiture transaction advisory fees			900,000
Divestiture working capital adjustments			$ 700,000