Long-Term Incentive Plan (Equity-Based Incentive Compensation Expense) (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
|
| Share-based Compensation Arrangements by Share-based Payment Award [Line Items] | ||||
| Allocation of LTIP expense on consolidated statements of income | $ 1,169 | $ 6,773 | $ 5,580 | $ 22,577 |
| Performance Based Awards [Member] | ||||
| Share-based Compensation Arrangements by Share-based Payment Award [Line Items] | ||||
| Allocation of LTIP expense on consolidated statements of income | (1,121) | 5,162 | (1,247) | 18,123 |
| Time-Based Awards [Member] | ||||
| Share-based Compensation Arrangements by Share-based Payment Award [Line Items] | ||||
| Allocation of LTIP expense on consolidated statements of income | $ 2,290 | $ 1,611 | $ 6,827 | $ 4,454 |