Summary of Significant Accounting Policies - Schedule of Financial Assets Measured at Fair Value on a Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Cash equivalents | $ 112,131 | $ 145,284 |
| Total Assets | 112,131 | 145,284 |
| Level 1 | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Cash equivalents | 112,131 | 145,284 |
| Total Assets | 112,131 | 145,284 |
| Level 2 | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Cash equivalents | 0 | 0 |
| Total Assets | 0 | 0 |
| Level 3 | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Cash equivalents | 0 | 0 |
| Total Assets | $ 0 | $ 0 |