Acquisitions - Schedule of Acquisition Cost of Shopping Centers (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Less: Below-market leases	$ (59,690)	$ (57,348)
Gain on sale and change in control of interests, net	19,185	45,464	$ 0
Acquisition Related Costs [Member]
Business Acquisition [Line Items]
Cash (including debt repaid at closing)	137,714	0
Gain on sale and change in control of interests, net	7,210	(173)
Carrying value of previously held common equity interests	4,379	(2,698)
Transfer and redemption of preferred equity interests	0	89,109
Total consideration	149,303	86,238
Shopping Center Acquired [Member]
Business Acquisition [Line Items]
Land	75,732	72,991
Buildings	135,537	163,723
Tenant improvements	3,620	2,854
Construction in progress	1,109	0
Other assets assumed (including cash and restricted cash)	1,005	10,711
Assets acquired	244,832	300,446
Less: Mortgage debt assumed at fair value	(91,833)	(196,654)
Less: Below-market leases	(8,504)	(15,890)
Less: Other liabilities assumed	(2,336)	(1,664)
Fair value of non-controlling interest	7,144	0
Net assets acquired	149,303	86,238
Shopping Center Acquired [Member] | In-Place Leases (Including Lease Origination Costs and Fair Market Value of Leases) [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 27,829	$ 50,167
Weighted Average Amortization Period	5 years 7 months 6 days	5 years 9 months 18 days
Shopping Center Acquired [Member] | Below-Market Leases [Member]
Business Acquisition [Line Items]
Weighted Average Amortization Period	16 years	14 years 7 months 6 days