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Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2019
Fair Value Disclosures [Abstract] |
Schedule of Carrying Values and Estimated Fair Values | The carrying values and the estimated fair values are summarized as follows (in thousands):
| March 31, 2019 |  |  | December 31, 2018 |
| Carrying Amount |  |  | Fair Value |  |  | Carrying Amount |  |  | Fair Value |
Senior Notes | $ | 1,646,496 |  |  | $ | 1,676,784 |  |  | $ | 1,646,007 |  |  | $ | 1,639,827 |
Revolving Credit Facilities and term loans |  | 89,676 |  |  |  | 90,323 |  |  |  | 149,655 |  |  |  | 150,533 |
Mortgage Indebtedness |  | 87,992 |  |  |  | 89,241 |  |  |  | 88,743 |  |  |  | 89,228 |
| $ | 1,824,164 |  |  | $ | 1,856,348 |  |  | $ | 1,884,405 |  |  | $ | 1,879,588 |

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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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