v3.20.2

Summary of Significant Accounting Policies - Summary of Rents Received in Advance (Detail) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Revenue From Contract With Customer [Abstract] |  |
Rent received in advance | $ 11,360 | $ 13,368

X
- Definition Amount at the balance sheet date that has been received by the entity that represents rents paid in advance. + References No definition available. + Details
Name: | us-gaap_AdvanceRent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration