Segment Information - Schedule of Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Information regarding business segments
Total operating revenues	$ 430,906	$ 292,163
Segment profit (loss)	14,680	140
Acquisition and related integration costs	(4,910)	(3,480)
Restructuring costs	0	(938)
Depreciation and amortization of intangible assets	(27,915)	(17,792)
Gains (losses), net on disposal of property and equipment	(1,433)	(173)
Interest expense	(25,798)	(8,916)
Defined benefit pension plan expense	(1,026)	(1,572)
Miscellaneous, net	1,114	(800)
Loss from operations before income taxes	(11,030)	(11,148)
Depreciation:
Total depreciation	13,528	8,975
Amortization of intangible assets:
Total amortization of intangible assets	14,387	8,817
Additions to property and equipment:
Total additions to property and equipment	16,414	14,212
Local Media
Information regarding business segments
Total operating revenues	321,804	203,387
Segment profit (loss)	55,977	34,173
Depreciation:
Total depreciation	11,490	7,591
Amortization of intangible assets:
Total amortization of intangible assets	9,921	3,958
Additions to property and equipment:
Total additions to property and equipment	14,441	9,480
National Media
Information regarding business segments
Total operating revenues	107,602	87,317
Segment profit (loss)	11,785	4,941
Depreciation:
Total depreciation	1,620	1,004
Amortization of intangible assets:
Total amortization of intangible assets	4,128	4,521
Additions to property and equipment:
Total additions to property and equipment	1,854	4,290
Other
Information regarding business segments
Total operating revenues	1,500	1,459
Segment profit (loss)	(170)	(433)
Depreciation:
Total depreciation	37	38
Additions to property and equipment:
Total additions to property and equipment	5	31
Shared services and corporate
Information regarding business segments
Segment profit (loss)	(18,654)	(16,158)
Depreciation:
Total depreciation	381	342
Amortization of intangible assets:
Total amortization of intangible assets	338	338
Additions to property and equipment:
Total additions to property and equipment	$ 114	$ 411