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v3.19.1

Basis of Presentation - Additional Information (Detail) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 USD ($) segment | Mar. 31, 2018 USD ($) | Dec. 31, 2018 USD ($)
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |
Decrease to mortgages payable, net of deferred debt issuance costs | $ (967,112) |  | $ (965,826)
Number of reportable segments | segment | 1 |  |
Previously Reported |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |
Rego Park II Loan Participation |  |  | 195,708
Restatement Adjustment |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |
Property rentals |  | $ 38,241 |
Expense reimbursements |  | $ 19,639 |
Restatement to reclassify Rego Park II as a reduction to mortgage payable, net of deferred debt issuance costs | Restatement Adjustment |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |
Decrease to mortgages payable, net of deferred debt issuance costs |  |  | $ 195,708

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