Stock-Based Compensation - Schedule of Restricted Stock Units Activity (Details) - Restricted Stock Units (RSUs) [Member] |
3 Months Ended |
|---|---|
|
Mar. 31, 2019
$ / shares
shares
| |
| Restricted Stock Units | |
| Beginning balance | shares | 1,494,111 |
| Granted | shares | 30,882 |
| Vested and Released | shares | (147,719) |
| Forfeited | shares | (8,127) |
| Ending balance | shares | 1,369,147 |
| Weighted Average Grant Date Fair Value | |
| Beginning balance | $ / shares | $ 26.91 |
| Granted | $ / shares | 7.48 |
| Vested and Released | $ / shares | 28.94 |
| Forfeited | $ / shares | 9.57 |
| Ending balance | $ / shares | $ 26.36 |
| X | ||||||||||
- Definition Share based compensation arrangement by share based payment award equity instruments other than options vested and released in period. No definition available.
|
| X | ||||||||||
- Definition Share based compensation arrangement by share based payment award equity instruments other than options vested and released in period weighted average grant date fair value. No definition available.
|
| X | ||||||||||
- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. 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 weighted average fair value at grant date for nonvested equity-based awards issued 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 A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition Number of shares under non-option equity instrument agreements that were either cancelled or expired. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|