Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Income Tax Disclosure [Abstract] | |||
| Tax provision at U.S. statutory rate | 35.00% | 35.00% | 35.00% |
| State and local income tax, net of federal benefit | (0.10%) | 0.10% | 0.70% |
| Foreign taxes | (2.50%) | (0.00%) | (0.00%) |
| Release of uncertain tax positions | 0.00% | 0.00% | (29.90%) |
| Prior year true-ups | 0.30% | 0.00% | 0.00% |
| Indemnity expense | 0.00% | 0.00% | 3.30% |
| Other | 1.70% | 1.30% | (1.70%) |
| Impact of federal rate change | (97.00%) | 0.00% | 0.00% |
| Effective income tax rate | (62.60%) | 36.40% | 7.40% |