Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenue.
Net revenue	$ 25,304	$ 24,967
Remaining performance obligations on leases one year or less exemption	true
Broadcast Advertising Revenue, Net
Revenue.
Net revenue	$ 21,468	21,587
Digital Advertising Revenue
Revenue.
Net revenue	1,910	1,749
Other Revenue
Revenue.
Net revenue	$ 1,926	$ 1,631