Revenues (Details) - USD ($) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended	5 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 03, 2018	Jun. 30, 2019	Jun. 03, 2018	Jun. 30, 2019
Successor Company
Disaggregation of Revenue [Line Items]
Net revenue	$ 95,004		$ 279,673		$ 547,169
Successor Company | Radio Station Group
Disaggregation of Revenue [Line Items]
Net revenue	68,357		193,162		359,703
Successor Company | Radio Station Group | Advertising revenues (broadcast, digital, non-traditional revenue (NTR) and trade)
Disaggregation of Revenue [Line Items]
Net revenue	67,958		192,163		357,859
Successor Company | Radio Station Group | Non-advertising revenues (tower rental and other)
Disaggregation of Revenue [Line Items]
Net revenue	399		999		1,844
Successor Company | Westwood One
Disaggregation of Revenue [Line Items]
Net revenue	26,356		85,764		186,123
Successor Company | Westwood One | Advertising revenues (broadcast, digital, non-traditional revenue (NTR) and trade)
Disaggregation of Revenue [Line Items]
Net revenue	24,986		82,667		178,975
Successor Company | Westwood One | Non-advertising revenues (tower rental and other)
Disaggregation of Revenue [Line Items]
Net revenue	1,370		3,097		7,148
Successor Company | Other
Disaggregation of Revenue [Line Items]
Net revenue	$ 291		$ 747		$ 1,343
Predecessor Company
Disaggregation of Revenue [Line Items]
Net revenue		$ 190,245		$ 453,924
Predecessor Company | Radio Station Group
Disaggregation of Revenue [Line Items]
Net revenue		135,093		303,317
Predecessor Company | Radio Station Group | Advertising revenues (broadcast, digital, non-traditional revenue (NTR) and trade)
Disaggregation of Revenue [Line Items]
Net revenue		134,477		301,804
Predecessor Company | Radio Station Group | Non-advertising revenues (tower rental and other)
Disaggregation of Revenue [Line Items]
Net revenue		616		1,513
Predecessor Company | Westwood One
Disaggregation of Revenue [Line Items]
Net revenue		54,924		149,715
Predecessor Company | Westwood One | Advertising revenues (broadcast, digital, non-traditional revenue (NTR) and trade)
Disaggregation of Revenue [Line Items]
Net revenue		52,684		143,215
Predecessor Company | Westwood One | Non-advertising revenues (tower rental and other)
Disaggregation of Revenue [Line Items]
Net revenue		2,240		6,500
Predecessor Company | Other
Disaggregation of Revenue [Line Items]
Net revenue		$ 228		$ 892