v3.19.3
Long-Term Incentive Plan (Equity-Based Incentive Compensation Expense) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income $ 6,773 $ 7,933 $ 22,577 $ 24,612
G&A Expense [Member]        
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 6,704 7,867 22,377 24,412
Operating Expenses [Member]        
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 69 66 200 200
Performance Based Awards [Member]        
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 5,162 7,087 18,123 22,176
Time-Based Awards [Member]        
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income $ 1,611 $ 846 $ 4,454 $ 2,436