Investments in and Advances to Joint Ventures - Condensed Combined Financial Information of Company's Unconsolidated Joint Venture Investments (Detail) - USD ($) $ in Thousands	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Condensed Combined Balance Sheets
Land	$ 190,585		$ 204,722
Buildings	907,838		964,845
Fixtures and tenant improvements	238,653		254,152
Total real estate rental property	1,337,076		1,423,719
Less: Accumulated depreciation	(628,703)		(654,389)
Real estate rental property, net	708,373		769,330
Construction in progress and land	2,671		2,682
Total real estate assets, net	711,044		772,012
Other assets, net	35,441		36,285
Total assets	959,040		933,602
Mortgage debt	288,442		301,373
Total liabilities	472,358		416,858
Accumulated equity	486,682	$ 519,617	516,744	$ 2,334,099	$ 2,123,944	$ 2,175,543
Total liabilities and equity	959,040		933,602
Company's share of accumulated equity	25,527		26,016
Basis differentials	2,391		2,521
Investments in and Advances to Joint Ventures, net	29,895		30,431
Related Party [Member]
Condensed Combined Balance Sheets
Amounts payable to the Company	1,977		1,894
Unconsolidated Joint Ventures [Member]
Condensed Combined Balance Sheets
Land	159,567		159,567
Buildings	496,012		494,062
Fixtures and tenant improvements	58,248		55,526
Total real estate rental property	713,827		709,155
Less: Accumulated depreciation	(176,534)		(166,534)
Real estate rental property, net	537,293		542,621
Construction in progress and land	13		352
Total real estate assets, net	537,306		542,973
Cash and restricted cash	32,654		25,750
Receivables, net	8,320		9,660
Other assets, net	16,786		17,823
Total assets	595,066		596,206
Mortgage debt	427,920		426,462
Other liabilities	32,090		32,533
Total liabilities	461,987		460,889
Accumulated equity	133,079		135,317
Total liabilities and equity	595,066		596,206
Unconsolidated Joint Ventures [Member] | Related Party [Member]
Condensed Combined Balance Sheets
Other liabilities	$ 1,977		$ 1,894