Fair Value Measurement - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Level 1 | ||
| Fair Value Assets Liabilities Measured On Recurring Basis [Line Items] | ||
| Deferred Compensation Liability | $ 0 | $ 0 |
| Level 2 | ||
| Fair Value Assets Liabilities Measured On Recurring Basis [Line Items] | ||
| Deferred Compensation Liability | (11,978) | (11,576) |
| Level 3 | ||
| Fair Value Assets Liabilities Measured On Recurring Basis [Line Items] | ||
| Deferred Compensation Liability | $ 0 | $ 0 |