Real Estate and Intangibles - Additional Information (Detail) $ in Thousands	3 Months Ended
Mar. 31, 2021 USD ($) Property	Mar. 31, 2020 USD ($)
Real Estate Properties [Line Items]
Revenues	$ 65,001	$ 58,218
Net income available to Easterly Government Properties, Inc.	6,991	1,697
Acquisition-related expenses	487	$ 538
Operating Properties Acquired [Member]
Real Estate Properties [Line Items]
Acquisition-related expenses	$ 500
DHA Aurora, FBI DEA El Paso, VA Mobile and VA Chico [Member] \| Operating Properties Acquired [Member]
Real Estate Properties [Line Items]
Number of properties \| Property	3
Purchase price	$ 64,100
DHA Aurora, FBI DEA El Paso, VA Mobile and VA Chico [Member] \| Operating Properties Acquired [Member]
Real Estate Properties [Line Items]
Weighted average amortization period	7 years 4 months 24 days
Revenues	$ 300
Net income available to Easterly Government Properties, Inc.	$ 100

Weighted average amortization period.

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The number of real estate properties owned as of the balance sheet date.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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