Business Segments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Revenue	$ 257,207	$ 245,860	$ 239,225
Expenses	(67,139)	(64,522)	(61,628)
Income from real estate	190,068	181,338	177,597
Interest expense, net and amortization of deferred debt costs	(49,153)	(43,937)	(45,424)
Depreciation and amortization of deferred leasing costs	(48,430)	(48,969)	(50,272)
General and administrative	(23,459)	(22,392)	(20,252)
Loss on early extinguishment of debt	0	(648)	0
Net income (loss)	69,026	65,392	61,649
Capital investment	203,681	116,888	55,918
Total assets	1,994,137	1,833,302	1,746,761
Operating Segments | Shopping Centers
Segment Reporting Information [Line Items]
Revenue	179,350	172,055	169,681
Expenses	(38,484)	(36,895)	(35,784)
Income from real estate	140,866	135,160	133,897
Interest expense, net and amortization of deferred debt costs	0	0	0
Depreciation and amortization of deferred leasing costs	(28,526)	(28,359)	(28,843)
General and administrative	0	0	0
Loss on early extinguishment of debt		0
Net income (loss)	112,340	106,801	105,054
Capital investment	16,491	8,412	12,673
Total assets	918,089	928,071	946,993
Operating Segments | Mixed-Use Properties
Segment Reporting Information [Line Items]
Revenue	77,857	73,805	69,544
Expenses	(28,655)	(27,627)	(25,844)
Income from real estate	49,202	46,178	43,700
Interest expense, net and amortization of deferred debt costs	0	0	0
Depreciation and amortization of deferred leasing costs	(19,904)	(20,610)	(21,429)
General and administrative	0	0	0
Loss on early extinguishment of debt		0
Net income (loss)	29,298	25,568	22,271
Capital investment	187,190	108,476	43,245
Total assets	1,057,332	885,500	777,709
Corporate
Segment Reporting Information [Line Items]
Revenue	0	0	0
Expenses	0	0	0
Income from real estate	0	0	0
Interest expense, net and amortization of deferred debt costs	(49,153)	(43,937)	(45,424)
Depreciation and amortization of deferred leasing costs	0	0	0
General and administrative	(23,459)	(22,392)	(20,252)
Loss on early extinguishment of debt		(648)
Net income (loss)	(72,612)	(66,977)	(65,676)
Capital investment	0	0	0
Total assets	$ 18,716	$ 19,731	$ 22,059