Related Party Transactions (Details) - USD ($) $ in Thousands		12 Months Ended
	Nov. 01, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Mar. 31, 2013	Jan. 31, 2012
Related party transactions
Cash distribution to members		$ 70,192	$ 101,755	$ 149,633
Stephen Adams
Related party transactions
Payments to related party for purchasing advertising services		200	200	0
Mr. Lemonis
Related party transactions
Related party expense		0		0
Related Party Agreement | Andris A. Baltins
Related party transactions
Related party expense		300	300	300
Related Party Agreement | Precise Graphix
Related party transactions
Related party expense		1,400	5,600	2,700
Advertising Agreement | Cumulus Media
Related party transactions
Related party expense			300	400
FreedomRoads | Lease Agreement | Managers and Officers
Related party transactions
Related party expense		$ 2,200	1,900	$ 2,000
FreedomRoads | Lease Agreement | Mr. Lemonis
Related party transactions
Base rent					$ 31,500	$ 29,000
Additional monthly base rent	$ 5,200
Mr. Lemonis
Related party transactions
Related party expense			$ 400
Mr. Lemonis | Precise Graphix
Related party transactions
Economic interest (as a percent)		67.00%
Mr. Lemonis | JD Custom | Mr. Lemonis
Related party transactions
Indirect interest		52.00%
Stephen Adams | Adams Radio | Stephen Adams
Related party transactions
Indirect interest		90.00%