Stock-Based Compensation - Summary of Total Unrecognized Compensation Cost Related to Stock-Based Compensation (Details) $ in Thousands |
3 Months Ended |
---|---|
Mar. 31, 2019
USD ($)
| |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
Unrecognized Compensation Cost | $ 65,382 |
Stock options | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
Unrecognized Compensation Cost | $ 53,415 |
Weighted Average Period of Expense Recognition (in Years) | 1 year 2 months 16 days |
Restricted stock | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
Unrecognized Compensation Cost | $ 11,967 |
Weighted Average Period of Expense Recognition (in Years) | 9 months |