Employee Retirement Savings Plan (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Compensation and Retirement Disclosure [Abstract] | |||
| Plan eligibility, minimum age | 21 years | ||
| Company contributions to Retirement Plan | $ 0 | $ 0 | $ 0 |