Defined Contribution Plan (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
Defined Contribution Plan [Abstract] | |||
Defined Contribution Plan, Employer Discretionary Contribution Amount | $ 682 | $ 565 | $ 487 |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 90.00% |