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Goodwill and Intagible Assets (Details 3) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]    
Intangible Assets, Gross (Excluding Goodwill) $ 17,034 $ 17,838
Finite-lived intangible assets, gross 34,446 34,182
Intangible assets, accumulated amortization 17,412 16,344
Finite-lived intangible assets, net 17,034 17,838
Customer Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross 17,086 16,888
Intangible assets, accumulated amortization 6,891 6,431
Finite-lived intangible assets, net 10,195 10,457
Distribution rights    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross 4,150 4,122
Intangible assets, accumulated amortization 1,245 1,180
Finite-lived intangible assets, net 2,905 2,942
Internally developed software    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross 2,304 2,301
Intangible assets, accumulated amortization 1,983 1,904
Finite-lived intangible assets, net 321 397
Proprietary content    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross 7,993 7,960
Intangible assets, accumulated amortization 4,785 4,431
Finite-lived intangible assets, net $ 3,208 3,529
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 2,137 2,056
Finite-lived intangible assets, net 147 228
Off-Market Favorable Lease [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross 629 627
Intangible assets, accumulated amortization 371 342
Finite-lived intangible assets, net $ 258 $ 285
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