Stock-Based Compensation - Schedule of Impact of Stock-Based Compensation in Consolidated and Combined Statements of Income (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||
| Compensation cost for awards | $ 4,467 | $ 4,649 |
| Future tax benefit | 965 | 1,654 |
| Compensation costs for equity-based awards | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||
| Compensation cost for awards | 2,863 | 3,982 |
| Compensation costs for liability-based awards | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||
| Compensation cost for awards | $ 1,604 | $ 667 |