v3.2.0.727
Goodwill and Amortizable Intangible Assets - Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]          
Amortization of Intangible Assets $ 313 $ 444 $ 692 $ 873  
Cost 4,084   4,084   $ 5,708
Accumulated Amortization 1,815   1,815   2,953
Amortizable intangible assets, net 2,269   2,269   2,755
Member List [Member]          
Finite-Lived Intangible Assets [Line Items]          
Cost 1,670   1,670   1,670
Accumulated Amortization 534   534   394
Amortizable intangible assets, net 1,136   $ 1,136   $ 1,276
Finite-Lived Intangible Assets, Remaining Amortization Period     4 years 37 days   4 years 219 days
Content [Member]          
Finite-Lived Intangible Assets [Line Items]          
Cost 140   $ 140   $ 140
Accumulated Amortization 90   90   66
Amortizable intangible assets, net 50   $ 50   $ 74
Finite-Lived Intangible Assets, Remaining Amortization Period     1 year 37 days   1 year 219 days
Core Technology [Member]          
Finite-Lived Intangible Assets [Line Items]          
Cost 110   $ 110   $ 110
Accumulated Amortization 70   70   52
Amortizable intangible assets, net 40   $ 40   $ 58
Finite-Lived Intangible Assets, Remaining Amortization Period     1 year 37 days   1 year 219 days
Data Acquisition Costs [Member]          
Finite-Lived Intangible Assets [Line Items]          
Cost 1,864   $ 1,864   $ 3,488
Accumulated Amortization 988   988   2,358
Amortizable intangible assets, net 876   $ 876   $ 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 133   133   83
Amortizable intangible assets, net $ 167   $ 167   $ 217
Finite-Lived Intangible Assets, Remaining Amortization Period     1 year 256 days   2 years 73 days