Intangible Assets and Goodwill - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Intangible Assets And Goodwill [Line Items]
FCC licenses renewal term	8 years
Goodwill	$ 13,102,000	$ 13,102,000
Amortization of intangible assets	1,200,000	1,300,000
Estimate amortization expense, 2022	900,000
Estimate amortization expense, thereafter	0
FMG Valdosta, LLC and FMG Kentucky, LLC | Trade Name
Intangible Assets And Goodwill [Line Items]
Finite-lived intangible assets acquired preliminary valuation	700,000
FMG Valdosta, LLC and FMG Kentucky, LLC | Customer List
Intangible Assets And Goodwill [Line Items]
Finite-lived intangible assets acquired preliminary valuation	$ 2,900,000
Acquired finite-lived intangible assets useful life	3 years
FCC Licenses
Intangible Assets And Goodwill [Line Items]
Indefinite-lived intangible assets, carrying amount	$ 63,300,000	$ 63,300,000