Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue.
Net revenue	$ 29,175	$ 29,821	$ 54,479	$ 54,788
Remaining performance obligations on leases one year or less exemption			true
Broadcast Advertising Revenue, Net
Revenue.
Net revenue	24,384	25,436	$ 45,852	47,023
Digital Advertising Revenue
Revenue.
Net revenue	2,473	2,233	4,383	3,982
Other Revenue
Revenue.
Net revenue	$ 2,318	$ 2,152	$ 4,244	$ 3,783