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Deconsolidation of Certain Interests (Narrative) (Details) - USD ($) $ in Thousands |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 04, 2013 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2014 | Jan. 31, 2010
Consolidated Entities [Line Items] |  |  |  |  |  |
Assets, Current |  | $ 257,232 | $ 241,950 |  |  |
Equity method investment, ownership percentage |  | 50.00% |  |  |  |
Impairments of assets |  | $ 18,565 | 48,681 | $ 5,351 |  |
Assets |  | 4,350,900 | 4,422,384 |  |  |
Liabilities, Current |  | 355,071 | 357,195 |  |  |
Other long-term liabilities |  | 248,019 | 252,004 |  |  |
Borgata |  |  |  |  |  |
Consolidated Entities [Line Items] |  |  |  |  |  |
Assets, Current |  | 97,935 | 100,297 |  | $ 98,119 |
Impairments of assets |  | 12,100 |  |  |  |
Long-Lived Assets |  |  |  |  | 1,220,036 |
Assets |  |  |  |  | 1,318,155 |
Liabilities, Current |  | $ 117,452 | 122,150 |  | 106,666 |
Other long-term liabilities |  |  |  |  | 786,278 |
Other Noncontrolling Interests |  |  |  |  | 191,833 |
Liabilities and noncontrolling interest |  |  |  |  | $ 1,084,777 |
Borgata |  |  |  |  |  |
Consolidated Entities [Line Items] |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  |  | 50.00%
Echelon Central Energy Facility | LVE |  |  |  |  |  |
Consolidated Entities [Line Items] |  |  |  |  |  |
Purchase price of LVE energy center assets | $ 187,000 |  |  |  |  |
Sale price of LVE energy center assets | $ 187,000 |  |  |  |  |
Segment Reconciling Items [Member] |  |  |  |  |  |
Consolidated Entities [Line Items] |  |  |  |  |  |
Impairments of assets |  |  | $ 48,681 | $ 5,351 |  |

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