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Real Estate - Schedule of Acquisitions (Details) - Quaker
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
ft²
Real Estate Properties [Line Items]  
Percentage of Acquisition Fees 2.50%
Purchase Price $ 37,674
Approx. Square Feet (in sqft) | ft² 124,900
Acquisition fees and expenses to non- affiliates $ 1,059