Segment Data (Details) affiliate in Thousands, $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended	5 Months Ended	6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 03, 2018 USD ($)	Jun. 30, 2019 USD ($) affiliate	Jun. 03, 2018 USD ($)	Jun. 30, 2019 USD ($) segment affiliate
Segment Reporting Information [Line Items]
Number of reportable segments | segment					2
Affiliate stations | affiliate			8		8
Income tax expense (benefit)	$ (2,600)	$ 176,700	$ 17,000	$ 176,900	$ (16,800)
Successor Company
Segment Reporting Information [Line Items]
Net revenue	95,004		279,673		547,169
Segment adjusted EBITDA	28,550		70,088		120,429
Income tax expense (benefit)	(2,606)		(17,026)		(16,841)
Non-operating (income) expense, including net interest expense	(6,152)		(21,217)		(43,016)
Depreciation and amortization	4,379		13,545		28,135
Stock-based compensation expense	652		1,106
(Loss) gain on sale or disposal of assets or stations	0		47,750		47,724
Gain on early extinguishment of debt	0				381
Net income	4,980		42,861		43,312
Successor Company | Radio Station Group
Segment Reporting Information [Line Items]
Net revenue	68,357		193,162		359,703
Successor Company | Westwood One
Segment Reporting Information [Line Items]
Net revenue	26,356		85,764		186,123
Successor Company | Operating Segments | Radio Station Group
Segment Reporting Information [Line Items]
Net revenue	68,357		193,162		359,703
Segment adjusted EBITDA	20,860		52,222		86,613
Successor Company | Operating Segments | Westwood One
Segment Reporting Information [Line Items]
Net revenue	26,356		85,764		186,123
Segment adjusted EBITDA	7,690		17,866		33,816
Successor Company | Corporate and Other
Segment Reporting Information [Line Items]
Net revenue	291		747		1,343
Successor Company | Adjustments to reconcile to GAAP measure
Segment Reporting Information [Line Items]
Corporate and other expense	(2,435)		(8,269)		(16,806)
Non-operating (income) expense, including net interest expense	(6,152)		(21,217)		(43,397)
Depreciation and amortization	(4,379)		(13,545)		(28,135)
Stock-based compensation expense	(652)		(1,106)		(2,314)
(Loss) gain on sale or disposal of assets or stations	0		47,750		47,724
Reorganization items, net	0		0		0
Gain on early extinguishment of debt	0				381
Acquisition-related and restructuring costs	(6,941)		(13,024)		(15,801)
Franchise and state taxes	(47)		(352)		(447)
Predecessor Company
Segment Reporting Information [Line Items]
Net revenue		190,245		453,924
Segment adjusted EBITDA		46,378		95,219
Income tax expense (benefit)		176,741		176,859
Non-operating (income) expense, including net interest expense		495,981		465,718
Depreciation and amortization		10,065		22,046
Stock-based compensation expense		65		231	2,314
(Loss) gain on sale or disposal of assets or stations		(147)		(158)
Gain on early extinguishment of debt				0
Net income		701,157		696,156
Predecessor Company | Radio Station Group
Segment Reporting Information [Line Items]
Net revenue		135,093		303,317
Predecessor Company | Westwood One
Segment Reporting Information [Line Items]
Net revenue		54,924		149,715
Predecessor Company | Operating Segments | Radio Station Group
Segment Reporting Information [Line Items]
Net revenue		135,093		303,317
Segment adjusted EBITDA		39,824		76,009
Predecessor Company | Operating Segments | Westwood One
Segment Reporting Information [Line Items]
Net revenue		54,924		149,715
Segment adjusted EBITDA		6,554		19,210
Predecessor Company | Corporate and Other
Segment Reporting Information [Line Items]
Net revenue		228		892
Predecessor Company | Adjustments to reconcile to GAAP measure
Segment Reporting Information [Line Items]
Corporate and other expense		(6,137)		(14,707)
Income tax expense (benefit)		176,741		176,859
Non-operating (income) expense, including net interest expense		(387)		(483)
Depreciation and amortization		(10,065)		(22,046)
Stock-based compensation expense		(65)		(231)
(Loss) gain on sale or disposal of assets or stations		(147)		(158)
Reorganization items, net		(496,368)		(466,201)
Gain on early extinguishment of debt				0
Acquisition-related and restructuring costs		(734)		(2,455)
Franchise and state taxes		(93)		(234)
Local marketing agreement fees | Successor Company
Segment Reporting Information [Line Items]
Local marketing agreement fees	358		438		1,481
Local marketing agreement fees | Successor Company | Adjustments to reconcile to GAAP measure
Segment Reporting Information [Line Items]
Local marketing agreement fees	$ (358)		$ (438)		$ (1,481)
Local marketing agreement fees | Predecessor Company
Segment Reporting Information [Line Items]
Local marketing agreement fees		702		1,809
Local marketing agreement fees | Predecessor Company | Adjustments to reconcile to GAAP measure
Segment Reporting Information [Line Items]
Local marketing agreement fees		$ (702)		$ (1,809)