Investments in Real Estate - Schedule of Real Estate Properties Development (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) ft²	Dec. 31, 2019 USD ($)
Real Estate [Line Items]
Estimated Project Cost	$ 3,514,564	$ 3,320,574
GAAP Investment Balance as of 12/31/2020	75,906	$ 13,313
Real Estate Investment
Real Estate [Line Items]
Estimated Project Cost	146,112
GAAP Investment Balance as of 12/31/2020	75,906
Amount Funded as of 12/31/2020	$ 63,186
Phoenix, Arizona
Real Estate [Line Items]
Project ownership percentage	100.00%
Phoenix, Arizona | Real Estate Investment
Real Estate [Line Items]
Estimated Sq. Ft. | ft²	468,182
Estimated Project Cost	$ 72,000
GAAP Investment Balance as of 12/31/2020	19,609
Amount Funded as of 12/31/2020	$ 17,766
% Leased as of 12/31/2020	100.00%
Approximate Lease Term (Years)	15 years
Atlanta, Georgia
Real Estate [Line Items]
Project ownership percentage	90.00%
Atlanta, Georgia | Real Estate Investment
Real Estate [Line Items]
Estimated Sq. Ft. | ft²	910,000
Estimated Project Cost	$ 53,812
GAAP Investment Balance as of 12/31/2020	39,824
Amount Funded as of 12/31/2020	$ 33,195
% Leased as of 12/31/2020	0.00%
Columbus, Ohio
Real Estate [Line Items]
Project ownership percentage	100.00%
Columbus, Ohio | Real Estate Investment
Real Estate [Line Items]
Estimated Sq. Ft. | ft²	320,190
Estimated Project Cost	$ 20,300
GAAP Investment Balance as of 12/31/2020	16,473
Amount Funded as of 12/31/2020	$ 12,225
% Leased as of 12/31/2020	100.00%
Approximate Lease Term (Years)	3 years