Goodwill and Amortizable Intangible Assets (Details) - USD ($) $ in Thousands |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2015 |
Dec. 31, 2014 |
|
| Business Acquisition [Line Items] | ||
| Goodwill | $ 1,145 | $ 1,145 |
| Finite-Lived Intangible Assets [Member] | ||
| Business Acquisition [Line Items] | ||
| Finite-Lived Intangible Asset, Useful Life | 3 years | 3 years |
| Member List [Member] | ||
| Business Acquisition [Line Items] | ||
| Finite-Lived Intangible Asset, Useful Life | 6 years | 6 years |