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Basis of Presentation (Details) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016 | Mar. 31, 2016
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
SPC dividends payable | $ 37,002 | $ 34,289 |
Unpaid dividends | 16,516 | 265,659 | $ 16,445
All other | 116,799 | 122,336 |
Total other liabilities | $ 170,317 | $ 422,285 |

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