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v3.19.3.a.u2

Share-based Compensation (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 USD ($) award_type shares | Dec. 31, 2018 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Outstanding, fully vested and exercisable (shares) | 0 |
Service-based share awards |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Service-based share awards outstanding (shares) | 921,418 | 658,906
Amended and Restated Stock Option Plan [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Shares authorized (shares) | 12,900,000 |
Shares remaining (shares) | 6,638,694 |
Share based compensation, vesting rights (in time period) | 3 years |
Expected term (years) | 10 years |
Amended and Restated Stock Option Plan [Member] | Non-employee director [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Share based compensation, vesting rights (in time period) | 12 months |
Amended and Restated Stock Option Plan [Member] | Initial vesting date [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Award vesting rights | 33.33% |
Amended and Restated Stock Option Plan [Member] | Year one [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Award vesting rights | 33.33% |
Amended and Restated Stock Option Plan [Member] | Year two [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Award vesting rights | 33.33% |
Long Term Incentive Plan [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Share based compensation, vesting rights (in time period) | 3 years |
Number of award types provided | award_type | 2 |
Performance unit liability | $ | $ 3.7 | $ 2.2

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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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