Long-Term Incentive Plan (Equity-Based Incentive Compensation Expense) (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2019 |
Jun. 30, 2020 |
Jun. 30, 2019 |
|
| Share-based Compensation Arrangements by Share-based Payment Award [Line Items] | ||||
| Allocation of LTIP expense on consolidated statements of income | $ 4,256 | $ 10,890 | $ 4,411 | $ 15,804 |
| Performance Based Awards [Member] | ||||
| Share-based Compensation Arrangements by Share-based Payment Award [Line Items] | ||||
| Allocation of LTIP expense on consolidated statements of income | 1,821 | 9,317 | (126) | 12,961 |
| Time-Based Awards [Member] | ||||
| Share-based Compensation Arrangements by Share-based Payment Award [Line Items] | ||||
| Allocation of LTIP expense on consolidated statements of income | $ 2,435 | $ 1,573 | $ 4,537 | $ 2,843 |