Investment in Real Estate (Details) $ in Thousands	Dec. 31, 2019 USD ($)	Apr. 12, 2019 ft²	Dec. 31, 2018 USD ($)
Investment in Real Estate
Land	$ 94,593		$ 86,955
Buildings and Improvements	1,989,731		1,730,329
Construction in Progress	394,474		265,921
Total investments in real estate	2,478,798		2,083,205
Net rentable space (in square feet) \| ft²		200,000
Boston
Investment in Real Estate
Land	5,154		5,154
Buildings and Improvements	119,227		107,596
Construction in Progress	931		1,644
Total investments in real estate	125,312		114,394
Chicago
Investment in Real Estate
Land	5,493		5,493
Buildings and Improvements	115,699		113,875
Construction in Progress	100,118		14,478
Total investments in real estate	221,310		133,846
Denver
Investment in Real Estate
Buildings and Improvements	32,659		30,740
Construction in Progress	2,461		476
Total investments in real estate	35,120		31,216
Los Angeles
Investment in Real Estate
Land	18,672		18,672
Buildings and Improvements	376,525		338,011
Construction in Progress	60,178		51,688
Total investments in real estate	455,375		408,371
Miami
Investment in Real Estate
Land	728		728
Buildings and Improvements	14,491		14,014
Construction in Progress	133		69
Total investments in real estate	15,352		14,811
New York
Investment in Real Estate
Land	2,729		2,729
Buildings and Improvements	155,746		152,956
Construction in Progress	56,271		33,796
Total investments in real estate	214,746		189,481
Northern Virginia
Investment in Real Estate
Land	21,856		22,793
Buildings and Improvements	398,742		346,209
Construction in Progress	101,619		94,623
Total investments in real estate	522,217		463,625
San Francisco Bay
Investment in Real Estate
Land	39,961		31,386
Buildings and Improvements	776,642		626,928
Construction in Progress	72,763		69,147
Total investments in real estate	$ 889,366		$ 727,461

The current amount of expenditures for a real estate project that has not yet been completed.

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Aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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Net rentable area for properties owned.

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Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

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