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Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended | 120 Months Ended
--- | --- | --- | ---
Jan. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2026
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Assets acquired |  | $ 44 |  |  |
Amortization expense |  | $ 4,047 | $ 4,312 | $ 4,956 |
Subscriber relationships |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Weighted average remaining useful life in years |  | 3 years 10 months 24 days |  |  |
Favorable lease |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Weighted average remaining useful life in years |  | 6 months |  |  |
Distribution rights |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Weighted average remaining useful life in years |  | 9 years 3 months 18 days |  |  |
Total weighted Average remaining useful life |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Weighted average remaining useful life in years |  | 3 years 3 months 18 days |  |  |
Acquisition Prior to 2013 |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Useful life |  | 7 years |  |  |
Headland Media Limited | Subscriber relationships |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Useful life |  | 10 years |  |  |
Headland Media Limited | Distribution rights |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Useful life |  | 15 years |  |  |
Headland Media Limited | Internally developed software |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Useful life |  | 3 years |  |  |
Headland Media Limited | Proprietary content |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Useful life |  | 2 years |  |  |
Videotel | Subscriber relationships |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Useful life |  | 8 years |  |  |
Videotel | Favorable lease |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Useful life |  | 5 years |  |  |
Videotel | Internally developed software |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Useful life |  | 4 years |  |  |
Videotel | Proprietary content |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Useful life |  | 5 years |  |  |
Q1 2017 Acquisition | Subscriber relationships |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Useful life | 10 years |  |  |  |
Assets acquired | $ 100 | $ 177 |  |  |
Assets consideration |  | $ 44 |  |  |
Forecast | Q1 2017 Acquisition | Maximum |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Assets consideration |  |  |  |  | $ 114

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