Investment in Real Estate - Schedule of Interest in Real Properties (Parenthetical) (Detail)		12 Months Ended
	Mar. 09, 2021	Dec. 31, 2021
Real Estate Properties [Line Items]
Percentage of ownership represented by Interests purchased		100.00%
Extended lease term	5 years
Lease extension maturity date	Nov. 30, 2036
Multifamily Residential Property [Member]
Real Estate Properties [Line Items]
Tenant average lease term		1 year
Williams Sonoma Office Building ("SF Property") [Member]
Real Estate Properties [Line Items]
Lease extension maturity date		Dec. 31, 2021