Summary of Significant Accounting Policies - Local Programming and Marketing Agreement Fees Recorded as Net Revenues (Except for Discontinued Operations) in Accompanying Condensed Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2017
Principle Transaction Revenue [Line Items]
LMA fees	$ 11,050	$ 10,752	$ 10,331
98.7FM (New York)
Principle Transaction Revenue [Line Items]
LMA fees	10,331	10,331	10,331
KPWR-FM
Principle Transaction Revenue [Line Items]
LMA fees		$ 421	$ 0
St. Louis Radio Cluster
Principle Transaction Revenue [Line Items]
LMA fees	$ 719