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Organization - Narrative (Details) $ / shares in Units, $ in Thousands			24 Months Ended	30 Months Ended
		Sep. 20, 2017 USD ($)	Sep. 30, 2019 USD ($)	Mar. 31, 2020 USD ($) property $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Apr. 30, 2019 shares	Jun. 30, 2015 shares
Subsidiary, Sale of Stock [Line Items]
Common Stock, par value (in usd per share) | $ / shares				$ 0.001	$ 0.001
Limited liability partnership percentage of interest held (percent)				87.80%
Proceeds from sale of shares | $			$ 2,800,000	$ 2,800,000
Number of shares outstanding (in shares) | shares				229,671,555	227,853,720
Shares issued | $	[1]			$ 230	$ 228
Sponsor and Affiliates
Subsidiary, Sale of Stock [Line Items]
Limited liability partnership percentage of interest held (percent)				10.60%
Number of properties contributed | property				5
Third Parties
Subsidiary, Sale of Stock [Line Items]
Limited liability partnership percentage of interest held (percent)				1.60%
Board Chairman
Subsidiary, Sale of Stock [Line Items]
Partnership units owned (in shares) | shares				2,400,000
Common Class E
Subsidiary, Sale of Stock [Line Items]
Common Stock, par value (in usd per share) | $ / shares				$ 0.001
Exchange ratio						1.04807
Partnership units issued ( in shares) | shares						1
Number of shares outstanding (in shares) | shares				154,934,769
Private Offering
Subsidiary, Sale of Stock [Line Items]
Proceeds from issuance of private placement | $		$ 2,000,000
Implied EA-1 common stock issued in consideration | shares				283,199,814.9
Distribution Reinvestment Plan
Subsidiary, Sale of Stock [Line Items]
Proceeds from issuance of private placement | $		200,000
Shares issued | $				$ 305,800	$ 293,700
Quarterly cap on aggregate redemptions | $				105,700
Follow-on Offering
Subsidiary, Sale of Stock [Line Items]
Proceeds from issuance of private placement | $		$ 2,200,000		$ 96,900
Implied EA-1 common stock issued in consideration | shares				10,142,991
Signature Office REIT Merger
Subsidiary, Sale of Stock [Line Items]
Implied EA-1 common stock issued in consideration | shares							43,772,611.05983
[1] See Note 9, Equity, for the number of shares outstanding of each class of common stock as of March 31, 2020.

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