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Long-term Debt - Additional Information (Details) - USD ($)		12 Months Ended
	Jul. 18, 2018	Feb. 28, 2018	Feb. 28, 2019	Jun. 16, 2014	May 30, 2012
Debt Instrument
Unamortized discount on issuance of debt		$ 3,476,000	$ 1,499,000
Face amount of debt		10,200,000	$ 10,200,000		$ 82,200,000
98.7FM Non-recourse Debt
Debt Instrument
Face amount of debt					$ 82,200,000
Interest rate during period					4.10%
NextRadio Notes Payable
Debt Instrument
Interest rate during period			2.00%
Non-recourse debt			$ 4,000,000
Two Thousand Fourteen Credit Agreement
Debt Instrument
Total credit agreement debt		$ 78,451,000	25,000,000
Letters of credit outstanding			$ 0
Principal redemption premium	2.00%
Principal redemption premium, additional quarterly amount	0.50%
Debt instrument, interest rate, increase (decrease)	0.50%
Debt, weighted average interest rate		8.70%	10.50%
Unamortized discount on issuance of debt			$ 100,000
Long-term debt			25,000,000
Two Thousand Fourteen Credit Agreement \| Base Rate
Debt Instrument
Debt instrument, variable rate, floor		2.00%
Basis spread on interest rate		6.00%
Two Thousand Fourteen Credit Agreement \| London Interbank Offered Rate (LIBOR)
Debt Instrument
Basis spread on interest rate		7.00%
Two Thousand Fourteen Credit Agreement \| Term Loan
Debt Instrument
Total credit agreement debt		$ 69,451,000	25,000,000
Two Thousand Fourteen Credit Agreement \| Revolver
Debt Instrument
Total credit agreement debt		9,000,000
Maximum borrowing capacity			20,000,000
Two Thousand Fourteen Credit Agreement \| Letter of Credit
Debt Instrument
Maximum borrowing capacity			$ 5,000,000
Covenant Requirement
Debt Instrument
Total leverage ratio			4.00
Covenant Requirement \| Minimum
Debt Instrument
Total leverage ratio			2.24
98.7FM Non-recourse Debt
Debt Instrument
Unamortized discount on issuance of debt			$ 1,400,000
Non-recourse debt		$ 53,919,000	$ 47,332,000
Digonex Non-recourse Debt
Debt Instrument
Face amount of debt				$ 6,200,000
Interest rate during period				5.00%
Digonex Non-recourse Debt \| Secured Debt
Debt Instrument
Long-term debt				$ 1,500,000
Digonex Non-recourse Debt \| Unsecured Debt
Debt Instrument
Long-term debt				$ 4,700,000