v3.19.3.a.u2

Credit Risk Concentrations - Additional Information (Detail) - customer	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Concentration Risk [Line Items]
Number of tenants or common franchises	0	0	0
Operating Expenses | Management Contracts Concentration Risk
Concentration Risk [Line Items]
Concentrations risk percentage	18.00%	19.00%	20.00%
Mortgages and Notes Payable | Credit Availability Concentration Risk | Financial Institution One
Concentration Risk [Line Items]
Concentrations risk percentage	62.00%	26.00%	27.00%
Mortgages and Notes Payable | Credit Availability Concentration Risk | Financial Institution Two
Concentration Risk [Line Items]
Concentrations risk percentage	16.00%	23.00%	17.00%
Mortgages and Notes Payable | Credit Availability Concentration Risk | Financial Institution Three
Concentration Risk [Line Items]
Concentrations risk percentage	10.00%	14.00%	13.00%
Mortgages and Notes Payable | Credit Availability Concentration Risk | Financial Institution Four
Concentration Risk [Line Items]
Concentrations risk percentage		11.00%	11.00%

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- Definition

Number of major customer.

+ References

No definition available.

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- Definition

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+ References

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- Definition

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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