Goodwill and Intangible Assets Goodwill and Intangible Assets Assets subject to Amortization (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 14,705	$ 14,794
Accumulated Amortization	9,865	9,133
Net Carrying Value	4,840	5,661
Subscriber relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,667	7,678
Accumulated Amortization	5,050	4,519
Net Carrying Value	2,617	3,159
Distribution rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,155	4,233
Accumulated Amortization	1,932	1,731
Net Carrying Value	2,223	2,502
Internally developed software
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	446	446
Accumulated Amortization	446	446
Net Carrying Value	0	0
Proprietary content
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	153	153
Accumulated Amortization	153	153
Net Carrying Value	0	0
Intellectual property
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,284	2,284
Accumulated Amortization	2,284	2,284
Net Carrying Value	$ 0	$ 0