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Goodwill and Intagible Assets (Details 3) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2018 | Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items] |  |
Intangible Assets, Gross (Excluding Goodwill) | $ 11,637 | $ 15,120
Finite-lived intangible assets, gross | 35,394 | 35,776
Intangible assets, accumulated amortization | 23,757 | 20,656
Finite-lived intangible assets, net | 11,637 | 15,120
Customer Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 17,662 | 17,912
Intangible assets, accumulated amortization | 9,858 | 8,347
Finite-lived intangible assets, net | 7,804 | 9,565
Distribution rights |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 4,291 | 4,385
Intangible assets, accumulated amortization | 1,663 | 1,450
Finite-lived intangible assets, net | 2,628 | 2,935
Internally developed software |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 2,327 | 2,324
Intangible assets, accumulated amortization | 2,327 | 2,206
Finite-lived intangible assets, net | 0 | 118
Proprietary content |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 8,185 | 8,223
Intangible assets, accumulated amortization | 7,070 | 5,908
Finite-lived intangible assets, net | $ 1,115 | 2,315
Intellectual Property [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life | 7 years |
Finite-lived intangible assets, gross | $ 2,284 | 2,284
Intangible assets, accumulated amortization | 2,284 | 2,284
Finite-lived intangible assets, net | 0 | 0
Off-Market Favorable Lease [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 645 | 648
Intangible assets, accumulated amortization | 555 | 461
Finite-lived intangible assets, net | $ 90 | $ 187
Headland Media Limited [Member] | Customer Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life | 10 years |
Headland Media Limited [Member] | Distribution rights |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life | 15 years |
Headland Media Limited [Member] | Internally developed software |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life | 3 years |
Headland Media Limited [Member] | Proprietary content |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life | 2 years |
Videotel [Member] | Customer Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life | 8 years |
Videotel [Member] | Internally developed software |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life | 4 years |
Videotel [Member] | Proprietary content |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life | 5 years |
Videotel [Member] | Off-Market Favorable Lease [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life | 5 years |

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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