Long-Term Stock Incentive Plan (Details) - Long-Term Stock Incentive Plan
|
1 Months Ended |
|
May 31, 2019
$ / shares
shares
|
|---|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Aggregate shares reserved for grants under the 2017 Plan (shares) |
1,500,000
|
| Certain Officers and Managers | Class A Common Stock | Restricted Shares |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Restricted shares awarded and issued under LTIP (in shares) |
83,298
|
| Weighted average grant date fair value (in dollars per share) | $ / shares |
$ 44.12
|
| Certain Officers and Managers | Class A Common Stock | Restricted Shares | Third Anniversary |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Vesting percentage of restricted shares (percent) |
50.00%
|
| Certain Officers and Managers | Class A Common Stock | Restricted Shares | Fifth Anniversary |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Vesting percentage of restricted shares (percent) |
50.00%
|