Acquisitions and Dispositions - Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Assets Acquired:
Property and equipment	$ 3	$ 11
Other assets:
Broadcast licenses	69	46
Goodwill	103	143
Total other assets	172	189
Total assets acquired	175	200
Liabilities Assumed:
Current liabilities	0	0
Total liabilities assumed	0	0
Net assets acquired	$ 175	$ 200