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Organization - Additional Information (Detail)		9 Months Ended
	Oct. 05, 2016 shares	Sep. 30, 2017 Property shares
Class Of Stock [Line Items]
Number of multifamily properties owned | Property		50
Number of units located with multifamily properties | Property		13,729
Common Shares
Class Of Stock [Line Items]
Common stock repurchased and retired shares | shares		60,377
R A I T Financial Trust | Common Shares
Class Of Stock [Line Items]
Common stock repurchased and retired shares | shares	7,269,719

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

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The number of units in a real estate property owned as of the balance sheet date.

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- Definition

Number of shares that have been repurchased and retired during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
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-Name Accounting Standards Codification
-Topic 505
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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