Income Taxes - Schedule of Components of Income Tax Expense (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Income Components | |||
| United States | $ 34,386 | $ 37,276 | $ 33,274 |
| Foreign | 2,194 | (89) | 157 |
| Income from operations before income taxes | 36,580 | 37,187 | 33,431 |
| Current income tax provision | |||
| United States-Federal | 11,952 | 15,106 | 10,549 |
| United States-State and local | 206 | 311 | 401 |
| Foreign | 758 | 371 | 910 |
| Total current income tax provision | 12,916 | 15,788 | 11,860 |
| Deferred income tax provision (benefit) | |||
| United States-Federal | (35,486) | (1,733) | (9,350) |
| United States-State and local | (260) | (278) | (42) |
| Foreign | (87) | (245) | (10) |
| Total deferred income tax provision (benefit) | (35,833) | (2,256) | (9,402) |
| Total income tax (benefit) expense | $ (22,917) | $ 13,532 | $ 2,458 |
| Effective income tax rate | (62.60%) | 36.40% | 7.40% |