Investment in Real Estate - Additional Information (Detail)	Sep. 30, 2021 property
Real Estate [Abstract]
Number of real estate properties owned	18

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

No definition available.

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant