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Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Jan. 01, 2019 | Dec. 31, 2018 | Jan. 01, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Costs related to shareholder activism | $ 0 | $ 0 | $ 0 | $ 19,369 |  |  |
Cumulative effect adjustment |  |  |  |  | $ (2,203) |  | $ (424,859)
ROU assets | 150,656 |  | 150,656 |  |  |  |
Lease liabilities | 102,887 |  | 102,887 |  |  |  |
Deferred charges and other assets, net | (277,799) |  | (277,799) |  |  | $ (390,403) |
Accounts payable and accrued expenses | 61,348 |  | 61,348 |  |  | 59,392 |
Other accrued liabilities | 253,882 |  | 253,882 |  |  | $ 303,051 |
Finance lease liabilities | $ 13,796 |  | $ 13,796 |  |  |  |
ASU 2016-02 |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Cumulative effect adjustment |  |  |  |  | (2,203) |  |
ROU assets |  |  |  |  | 109,299 |  |
Lease liabilities |  |  |  |  | 109,299 |  |
Deferred charges and other assets, net |  |  |  |  | 59,736 |  |
Accounts payable and accrued expenses |  |  |  |  | (5,978) |  |
Other accrued liabilities |  |  |  |  | (4,342) |  |
Finance lease liabilities |  |  |  |  | $ 15,268 |  |

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