Share Based Compensation (Details)
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3 Months Ended |
9 Months Ended |
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Jun. 08, 2018
USD ($)
item
shares
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Sep. 30, 2018
shares
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Sep. 30, 2018
shares
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Sep. 30, 2017
shares
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Jul. 31, 2018
shares
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| Restricted shares |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Total number of restricted shares granted |
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1,904,595
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623,165
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| Vested (in shares) |
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(209,765)
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(339,701)
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| Stock options |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Granted (in shares) |
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359,618
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774,357
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| 2018 Plan |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of shares authorized |
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3,372,484
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3,372,484
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| 2018 Plan | Restricted shares |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Total number of restricted shares granted |
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209,654
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225,852
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| Vested (in shares) |
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(6,771)
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| 2018 Plan | Restricted shares | Cliff vesting |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Total number of options granted |
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202,883
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| Vesting percentage |
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100.00%
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| Vesting period |
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3 years
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| 2018 Plan | Stock options |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Total number of options granted |
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2,362
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| 2018 Plan | Stock options | Vesting based on performance |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| The number of share instruments with approved modifications of the vesting conditions |
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114,283
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| Director Plan | Restricted shares |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Vested (in shares) |
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(49,230)
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| 2018 ESPP |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of shares authorized |
350,388
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| Number of shares issued |
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1,332
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| Term of the offering period |
18 months
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| Number of offering periods | item |
3
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| Term of individual offering periods |
6 months
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| Term established for purchasing stock under the employee stock purchase plan |
3 months
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| Discount percentage |
5.00%
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| Maximum dollar amount of shares that can be purchased by an individual in any given calendar year | $ |
$ 25,000
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| Number of times a participant may make change or withdrawal from plan during a term | item |
1
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