Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Indefinite Lived And Finite Lived Intangible Assets [Line Items]
Goodwill	$ 13,102	$ 13,102
Total	78,587	79,217
FCC Licenses
Indefinite Lived And Finite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	63,266	63,266
Trade Name
Indefinite Lived And Finite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	733	733
Programming Contract
Indefinite Lived And Finite Lived Intangible Assets [Line Items]
Definite-lived intangible assets	73	220
Customer List
Indefinite Lived And Finite Lived Intangible Assets [Line Items]
Definite-lived intangible assets	$ 1,413	$ 1,896