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Fair Value Measurements (Details) - USD ($) $ in Thousands | Sep. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, At Fair Value | $ 6,437 | $ 3,301
Interest rate swaps [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Assets, at Fair Value | 0 |
Interest Rate Derivative Liabilities, At Fair Value | 6,437 |
Interest rate swaps [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Assets, at Fair Value | 0 |
Interest Rate Derivative Liabilities, At Fair Value | 0 |
Interest rate swaps [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Assets, at Fair Value | 0 |
Interest Rate Derivative Liabilities, At Fair Value | 6,437 |
Interest rate swaps [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Assets, at Fair Value | 0 |
Interest Rate Derivative Liabilities, At Fair Value | 0 |
Mortgage notes payable [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, At Fair Value | 69,594 |
Mortgage notes payable [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, At Fair Value | 0 |
Mortgage notes payable [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, At Fair Value | 0 |
Mortgage notes payable [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, At Fair Value | 73,363 |
Unsecured term loan [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, At Fair Value | 159,211 |
Unsecured term loan [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, At Fair Value | 0 |
Unsecured term loan [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, At Fair Value | 0 |
Unsecured term loan [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, At Fair Value | 160,915 |
Senior unsecured notes [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, At Fair Value | 159,156 |
Senior unsecured notes [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, At Fair Value | 0 |
Senior unsecured notes [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, At Fair Value | 0 |
Senior unsecured notes [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, At Fair Value | 159,520 |
Revolving Credit Facility [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, At Fair Value | 47,000 |
Revolving Credit Facility [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, At Fair Value | 0 |
Revolving Credit Facility [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, At Fair Value | 47,000 |
Revolving Credit Facility [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, At Fair Value | $ 0 |

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