Stock-Based Compensation - Summary of Restricted Stock Units Activity (Details) - Restricted Stock Units |
9 Months Ended |
|---|---|
|
Sep. 30, 2019
shares
| |
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |
| Number of shares, beginning balance | 981,453 |
| Number of shares, Granted | 664,210 |
| Number of shares, Vested and settled | (421,552) |
| Number of shares, Expired/forfeited/cancelled | (455,437) |
| Number of shares, ending balance | 768,674 |
| Number of shares, Expected to vest | 517,474 |
| X | ||||||||||
- Definition Share based compensation arrangement by share based payment award equity instruments other than options expected to vest. No definition available.
|
| X | ||||||||||
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Details
|