Basis of Presentations and Summary of Significant Accounting Policies - Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Intangible Assets
Net book value	$ 12,589	$ 13,933
Accumulated amortization	$ 119,640	116,268
Media content
Intangible Assets
Intangibles, useful life	5 years
Net book value	$ 158	274
Accumulated amortization	91,333	91,215
Media content | Maximum
Intangible Assets
Accelerated amortization of intangible assets	$ 100	$ 100