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Intangible Assets (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Intangible Assets (Textual)    
Platform development costs capitalized, research and development costs $ 3,038 $ 3,958
Amortization of intangible assets recognized in technology and content expenses $ 580 $ 590