Nature of Business and Significant Accounting Policies - Goodwill and Other Intangibles and Deferred Financing Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Goodwill and other intangibles:
Goodwill and Intangible Asset Impairment	$ 2,784
Deferred financing costs:
Accumulated amortization of deferred financing costs	2,500	$ 2,300
Deferred financing costs, net	800	1,000
Interest expense
Deferred financing costs:
Amortization of deferred financing costs	$ 200	300
Customer relationships, non-compete agreements, affiliate agreements, and programming rights | Minimum
Goodwill and other intangibles:
Useful lives	1 year
Customer relationships, non-compete agreements, affiliate agreements, and programming rights | Maximum
Goodwill and other intangibles:
Useful lives	10 years
Snap Media
Goodwill and other intangibles:
Goodwill and Intangible Asset Impairment	$ 2,800	$ 0