Spectrum repacking reimbursements and other, net - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Unusual or Infrequent Item, or Both [Line Items]
Reimbursement from spectrum repacking	$ 323,000	$ 4,942,000	$ 13,180,000
Asset impairment charges		1,100,000
Impairment of indefinite-lived intangible assets	0	0	$ 0
Impairment of intangible asset indefinite lived excluding goodwill statement of income or comprehensive income extensible enumeration not disclosed flag			impairment charge
Contract termination and other costs related to national sales	$ 0	$ 1,540,000	$ 0
Television and radio station FCC broadcast licenses
Unusual or Infrequent Item, or Both [Line Items]
Impairment of indefinite-lived intangible assets			1,100,000
Trade Names
Unusual or Infrequent Item, or Both [Line Items]
Impairment of indefinite-lived intangible assets			$ 2,100,000