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Basis of Presentation and Significant Accounting Policies Supplemental Cash Flow information (Details) - USD ($) $ in Thousands | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Mar. 31, 2019 | Dec. 31, 2018 | Mar. 31, 2018 | Dec. 31, 2017
Non Cash Exchange of Puerto Rico Bonds | $ 510,215 |  |  |  |  |
Income Taxes Paid | 852 | $ 26,910 |  |  |  |
Non Cash Impact of Rehabilitation Exit Transaction | 0 | 1,918,561 |  |  |  |
Cash and cash equivalents | 17,514 | 44,398 |  | $ 63,089 |  |
Restricted Cash | 0 |  | $ 0 | 19,405 | $ 0 |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | 46,014 | 45,450 |  | 83,493 |  | $ 624,681
Long-term Debt [Member] |  |  |  |  |  |
Interest Paid, Including Capitalized Interest, Operating and Investing Activities | 74,426 | 157,896 |  |  |  |
Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |  |  |
Restricted Cash | $ 28,500 | $ 1,052 |  | $ 999 |  |

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