Fair Value of Financial Instruments (Fair Value, by Balance Sheet Grouping) (Details) - Significant Unobservable Inputs Level 3 [Member] - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Mortgage notes payable and premium, net [Member] | Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	$ 131,196	$ 133,709
Mortgage notes payable and premium, net [Member] | Total [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	134,215	134,707
Credit Facility [Member] | Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	304,000	304,000
Credit Facility [Member] | Total [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	$ 304,000	$ 304,000