v2.4.0.8
Long-Term Incentive Plan (Equity-Based Incentive Compensation Expense) (Details) (Management [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income $ 4,978 $ 4,217 $ 17,731 $ 14,499
G&A Expense [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 4,862 4,126 17,322 13,928
Operating Expenses [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 116 91 409 571
Equity Method [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 3,769 2,845 12,128 9,463
Liability Method [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 1,209 1,372 5,603 5,036
Performance Based Awards [Member] | Two Thousand Ten Awards [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income   0   194
Performance Based Awards [Member] | Two Thousand Ten Awards [Member] | Equity Method [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income   0   121
Performance Based Awards [Member] | Two Thousand Ten Awards [Member] | Liability Method [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income   0   73
Performance Based Awards [Member] | Two Thousand Eleven Awards [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income   1,818   7,144
Performance Based Awards [Member] | Two Thousand Eleven Awards [Member] | Equity Method [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income   1,101   4,204
Performance Based Awards [Member] | Two Thousand Eleven Awards [Member] | Liability Method [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income   717   2,940
Performance Based Awards [Member] | Two Thousand Twelve Awards [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 1,673 1,288 6,258 3,976
Performance Based Awards [Member] | Two Thousand Twelve Awards [Member] | Equity Method [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 1,022 856 3,066 2,563
Performance Based Awards [Member] | Two Thousand Twelve Awards [Member] | Liability Method [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 651 432 3,192 1,413
Performance Based Awards [Member] | Two Thousand Thirteen Awards [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 1,908 986 7,137 2,832
Performance Based Awards [Member] | Two Thousand Thirteen Awards [Member] | Equity Method [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 1,350 763 4,726 2,222
Performance Based Awards [Member] | Two Thousand Thirteen Awards [Member] | Liability Method [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 558 223 2,411 610
Performance Based Awards [Member] | Two Thousand Fourteen Awards [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 1,101   3,233  
Performance Based Awards [Member] | Two Thousand Fourteen Awards [Member] | Equity Method [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 1,101   3,233  
Performance Based Awards [Member] | Two Thousand Fourteen Awards [Member] | Liability Method [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 0   0  
Retention Awards [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 296 125 1,103 353
Retention Awards [Member] | Equity Method [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income 296 125 1,103 353
Retention Awards [Member] | Liability Method [Member]
       
Share-based Compensation Arrangements by Share-based Payment Award [Line Items]        
Allocation of LTIP expense on consolidated statements of income $ 0 $ 0 $ 0 $ 0