v3.3.0.814
Goodwill and Amortizable Intangible Assets - Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]          
Amortization of Intangible Assets $ 273 $ 437 $ 965 $ 1,310  
Cost 4,093   4,093   $ 5,708
Accumulated Amortization 1,924   1,924   2,953
Amortizable intangible assets, net 2,169   2,169   2,755
Member List [Member]          
Finite-Lived Intangible Assets [Line Items]          
Cost 1,670   1,670   1,670
Accumulated Amortization 603   603   394
Amortizable intangible assets, net 1,067   $ 1,067   $ 1,276
Finite-Lived Intangible Assets, Remaining Amortization Period     3 years 292 days   4 years 219 days
Content [Member]          
Finite-Lived Intangible Assets [Line Items]          
Cost 140   $ 140   $ 140
Accumulated Amortization 101   101   66
Amortizable intangible assets, net 39   $ 39   $ 74
Finite-Lived Intangible Assets, Remaining Amortization Period     292 days   1 year 219 days
Core Technology [Member]          
Finite-Lived Intangible Assets [Line Items]          
Cost 110   $ 110   $ 110
Accumulated Amortization 80   80   52
Amortizable intangible assets, net 30   $ 30   $ 58
Finite-Lived Intangible Assets, Remaining Amortization Period     292 days   1 year 219 days
Data Acquisition Costs [Member]          
Finite-Lived Intangible Assets [Line Items]          
Cost 1,873   $ 1,873   $ 3,488
Accumulated Amortization 982   982   2,358
Amortizable intangible assets, net 891   $ 891   $ 1,130
Finite-Lived Intangible Assets, Remaining Amortization Period     1 year 183 days   1 year 73 days
Other Intangible Assets [Member]          
Finite-Lived Intangible Assets [Line Items]          
Cost 300   $ 300   $ 300
Accumulated Amortization 158   158   83
Amortizable intangible assets, net $ 142   $ 142   $ 217
Finite-Lived Intangible Assets, Remaining Amortization Period     1 year 146 days   2 years 73 days