Segment and Geographic Information (Details) - segment |
12 Months Ended | |
|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Segment Reporting [Abstract] | ||
| Number of operating segments | 1 | |
| Number of reportable segments | 1 | |
| Long-lived Assets | United States | ||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Concentration risk, percentage | 98.00% | 96.00% |
| Revenue | United States | ||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Concentration risk, percentage | 99.00% | 99.00% |