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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2018
Accounting Policies [Abstract] |
Schedule of Carrying Amount and Fair Value of Financial Instrument | . The fair value of mortgage indebtedness is based on a discounted cash flows valuation technique. As this technique utilizes current credit spreads, which are generally unobservable, this is classified as a Level 3 fair value measurement within the fair value hierarchy. We determine appropriate credit spreads based on the type of debt and its maturity. The following table summarizes the carrying amount and the fair value of our financial instruments as of the periods indicated:
|  | December 31, 2018 |  |  | December 31, 2017 |
Financial Instrument |  | Carrying Amount |  |  | Estimated Fair Value |  |  | Carrying Amount |  |  | Estimated Fair Value |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 9,316 |  |  | $ | 9,316 |  |  | $ | 9,985 |  |  | $ | 9,985 |
Restricted cash |  |  | 6,729 |  |  |  | 6,729 |  |  |  | 4,634 |  |  |  | 4,634 |
Derivative assets |  |  | 8,307 |  |  |  | 8,307 |  |  |  | 7,291 |  |  |  | 7,291 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured credit facility |  |  | 153,983 |  |  |  | 155,743 |  |  |  | 101,629 |  |  |  | 104,005 |
Term loans |  |  | 248,380 |  |  |  | 250,000 |  |  |  | 99,105 |  |  |  | 100,000 |
Mortgages |  |  | 583,125 |  |  |  | 577,112 |  |  |  | 577,708 |  |  |  | 564,333 |

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