Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenue.
Net revenue	$ 29,149	$ 29,980	$ 83,628	$ 84,768
Remaining performance obligations on leases one year or less exemption			true
Broadcast Advertising Revenue, Net
Revenue.
Net revenue	23,946	25,500	$ 69,798	72,523
Digital Advertising Revenue
Revenue.
Net revenue	2,757	2,142	7,140	6,124
Other Revenue
Revenue.
Net revenue	$ 2,446	$ 2,338	$ 6,690	$ 6,121