Goodwill and Intangibles Assets - Acquired Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 14,793	$ 15,056
Intangible assets, accumulated amortization	10,361	10,113
Finite-lived intangible assets, net	4,432	4,943
Subscriber relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	7,739	7,860
Intangible assets, accumulated amortization	5,411	5,231
Finite-lived intangible assets, net	2,328	2,629
Distribution rights
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	4,171	4,313
Intangible assets, accumulated amortization	2,067	1,999
Finite-lived intangible assets, net	2,104	2,314
Internally developed software
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	446	446
Intangible assets, accumulated amortization	446	446
Finite-lived intangible assets, net	0	0
Proprietary content
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	153	153
Intangible assets, accumulated amortization	153	153
Finite-lived intangible assets, net	0	0
Intellectual property
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	2,284	2,284
Intangible assets, accumulated amortization	2,284	2,284
Finite-lived intangible assets, net	$ 0	$ 0