Retirement and Postretirement Plans - Summary of Components of Net Periodic Benefit Cost (Credit) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Media General [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 2,925	$ 3,875	$ 8,775	$ 11,625
Expected return on plan assets	(4,925)	(5,475)	(14,775)	(16,425)
Net periodic benefit cost (credit)	(2,000)	(1,600)	(6,000)	(4,800)
Media General [Member] | OPEB [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	5		15
Interest cost	138	200	413	600
Amortization of prior service costs	(13)		(38)
Amortization of net loss	43		128
Net periodic benefit cost (credit)	173	200	518	600
Tribune [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	248	32	744	32
Interest cost	13,374	1,841	40,122	1,841
Expected return on plan assets	(22,341)	(3,024)	(67,023)	(3,024)
Net periodic benefit cost (credit)	(8,719)	(1,151)	(26,157)	(1,151)
Tribune [Member] | OPEB [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	33	5	99	5
Net periodic benefit cost (credit)	$ 33	$ 5	$ 99	$ 5