Compensation and Other Benefit Plans - ESPP (Details) - 2015 ESPP - shares |
1 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
May 31, 2017 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Apr. 30, 2017 |
May 31, 2015 |
|
| Share-based compensation | |||||
| Percentage related to employees to purchase shares at the lower fair market value at offering period | 85.00% | ||||
| Common stock reserved for future issuance (in shares) | 15,000 | ||||
| Offering period | 6 months | ||||
| Percentage of compensation of eligible employees to purchase shares of entity common stock at discount through payroll deductions | 10.00% | ||||
| Common Stock | |||||
| Share-based compensation | |||||
| Increase in aggregate number of shares authorized for issuance | 250,000 | ||||
| Shares authorized for issuance | 265,000 | 15,000 | |||
| Maximum shares per employee | 2,500 | ||||
| Shares purchased (in shares) | 2,365 | 2,948 | |||
| X | ||||||||||
- Definition Aggregate number of common shares reserved for future issuance. 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 | ||||||||||
- Definition The highest quantity of shares an employee can purchase under the plan per period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of additional shares authorized for issuance under share-based payment arrangement. No definition available.
|
| X | ||||||||||
- Definition Number of shares authorized for issuance under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of shares purchased for issuance under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Purchase price of common stock expressed as a percentage of its fair value. No definition available.
|
| X | ||||||||||
- Definition Refers the percentage of compensation deduction in eligible employees salary to purchase entity common stock. No definition available.
|
| X | ||||||||||
- Definition The length of each offering period under the plan, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|