Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue.
Revenue from Contract with Customer, Including Assessed Tax	$ 29,980	$ 28,845	$ 84,768	$ 79,192
Revenue, Remaining Performance Obligation, Optional Exemption, Performance Obligation [true false]			true
Broadcast Advertising Revenue, Net [Member]
Revenue.
Revenue from Contract with Customer, Including Assessed Tax	25,500	24,970	$ 72,523	69,921
Digital Advertising Revenue [Member]
Revenue.
Revenue from Contract with Customer, Including Assessed Tax	2,142	1,984	6,124	4,620
Other Revenue [Member]
Revenue.
Revenue from Contract with Customer, Including Assessed Tax	$ 2,338	$ 1,891	$ 6,121	$ 4,651