Fair Value of Financial Instruments (Level 3 Inputs) (Details) - Significant Unobservable Inputs Level 3 - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Mortgage Notes Payable | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value disclosure	$ 537,533	$ 470,803
Mortgage Notes Payable | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value disclosure	545,414	472,585
Revolving Credit Facility | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value disclosure	250,618	243,300
Revolving Credit Facility | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value disclosure	250,618	243,300
Fannie Credit Facility | Revolving Credit Facility | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value disclosure	359,322	359,322
Fannie Credit Facility | Revolving Credit Facility | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value disclosure	$ 370,122	$ 360,675