Segments - Schedule of Net Operating Income of Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information
Rental revenues	$ 65,147		$ 63,265		$ 128,948	$ 125,146
General contracting and real estate services revenues	31,976		116,839		78,590	243,814
Interest income (real estate financing segment)	4,140		4,632		8,368	9,258
Total revenues	101,263		184,736		215,906	378,218
Rental expenses	16,077		15,087		31,701	29,692
Real estate taxes	6,590		5,886		12,527	11,811
General contracting and real estate services expenses	30,592		112,500		75,842	235,398
Interest expense (real estate financing segment)	1,927		1,767		3,641	3,099
Total segment operating expenses	55,186		135,240		123,711	280,000
Segment net operating income	46,077		49,496		92,195	98,218
Interest income (excluding real estate financing segment)	0		0		0	0
Depreciation and amortization	(21,752)		(21,183)		(44,968)	(42,013)
General and administrative expenses	(5,998)		(4,503)		(13,384)	(10,377)
Acquisition, development, and other pursuit costs	(286)		(5,528)		(340)	(5,528)
Impairment charges	0		(1,494)		0	(1,494)
Gain (loss) on real estate dispositions, net			0
Interest expense (excluding real estate financing segment)	(19,344)		(19,460)		(35,739)	(36,103)
Equity in loss of unconsolidated real estate entities	(322)		0		(2,235)	0
Gain on consolidation of real estate entities	6,915		0		6,915	0
Loss on extinguishment of debt			0
Change in fair value of derivatives and other	648		4,398		(562)	17,286
Unrealized credit loss provision	209		228		187	145
Other income (expense), net	3		79		(72)	158
Income tax provision	567		1,246		377	712
Net income (loss)	6,717	$ (4,343)	3,279	$ 17,725	2,374	21,004
Real Estate Financing
Segment Reporting Information
Interest expense (real estate financing segment)	1,927				3,641	3,099
Operating Segments | Retail Real Estate
Segment Reporting Information
Rental revenues	24,816		26,094		49,568	51,745
General contracting and real estate services revenues	0		0		0	0
Interest income (real estate financing segment)	0		0		0	0
Total revenues	24,816		26,094		49,568	51,745
Rental expenses	4,244		4,394		8,704	8,605
Real estate taxes	2,259		2,420		4,569	4,835
General contracting and real estate services expenses	0		0		0	0
Interest expense (real estate financing segment)	0		0		0	0
Total segment operating expenses	6,503		6,814		13,273	13,440
Segment net operating income	18,313		19,280		36,295	38,305
Interest income (excluding real estate financing segment)	9		25		21	43
Depreciation and amortization	(7,772)		(9,044)		(16,576)	(17,818)
General and administrative expenses	0		0		0	0
Acquisition, development, and other pursuit costs	0		0		0	0
Impairment charges			0			0
Gain (loss) on real estate dispositions, net			0
Interest expense (excluding real estate financing segment)	(7,287)		(7,586)		(12,963)	(14,047)
Equity in loss of unconsolidated real estate entities	(33)		0		(142)
Gain on consolidation of real estate entities	421		0		421
Loss on extinguishment of debt			0
Change in fair value of derivatives and other	109		1,499		(362)	6,077
Unrealized credit loss provision	0		0		0	0
Other income (expense), net	4		36		5	42
Income tax provision	0		0		0	0
Net income (loss)	3,764		4,210		6,699	12,602
Operating Segments | Office Real Estate
Segment Reporting Information
Rental revenues	24,392		22,870		48,290	44,748
General contracting and real estate services revenues	0		0		0	0
Interest income (real estate financing segment)	0		0		0	0
Total revenues	24,392		22,870		48,290	44,748
Rental expenses	6,268		5,956		12,638	12,079
Real estate taxes	2,678		2,135		4,968	4,350
General contracting and real estate services expenses	0		0		0	0
Interest expense (real estate financing segment)	0		0		0	0
Total segment operating expenses	8,946		8,091		17,606	16,429
Segment net operating income	15,446		14,779		30,684	28,319
Interest income (excluding real estate financing segment)	12		0		12	0
Depreciation and amortization	(8,517)		(8,346)		(18,085)	(16,475)
General and administrative expenses	0		0		0	0
Acquisition, development, and other pursuit costs	0		(5,528)		0	(5,528)
Impairment charges			(1,494)			(1,494)
Gain (loss) on real estate dispositions, net			0
Interest expense (excluding real estate financing segment)	(7,850)		(7,165)		(14,309)	(13,162)
Equity in loss of unconsolidated real estate entities	212		0		(1,094)
Gain on consolidation of real estate entities	2,888		0		2,888
Loss on extinguishment of debt			0
Change in fair value of derivatives and other	291		1,135		12	4,540
Unrealized credit loss provision	0		0		0	0
Other income (expense), net	(2)		22		(1)	89
Income tax provision	0		1,634		0	1,634
Net income (loss)	2,480		(4,963)		107	(2,077)
Operating Segments | Multifamily Real Estate
Segment Reporting Information
Rental revenues	15,939		14,301		31,090	28,653
General contracting and real estate services revenues	0		0		0	0
Interest income (real estate financing segment)	0		0		0	0
Total revenues	15,939		14,301		31,090	28,653
Rental expenses	5,565		4,737		10,359	9,008
Real estate taxes	1,653		1,331		2,990	2,626
General contracting and real estate services expenses	0		0		0	0
Interest expense (real estate financing segment)	0		0		0	0
Total segment operating expenses	7,218		6,068		13,349	11,634
Segment net operating income	8,721		8,233		17,741	17,019
Interest income (excluding real estate financing segment)	44		27		83	39
Depreciation and amortization	(5,396)		(3,670)		(10,049)	(7,453)
General and administrative expenses	0		0		0	0
Acquisition, development, and other pursuit costs	0		0		0	0
Impairment charges			0			0
Gain (loss) on real estate dispositions, net			0
Interest expense (excluding real estate financing segment)	(4,207)		(4,709)		(8,467)	(8,894)
Equity in loss of unconsolidated real estate entities	(501)		0		(999)
Gain on consolidation of real estate entities	3,606		0		3,606
Loss on extinguishment of debt			0
Change in fair value of derivatives and other	144		416		(109)	1,498
Unrealized credit loss provision	0		0		0	0
Other income (expense), net	0		0		14	(15)
Income tax provision	0		0		0	0
Net income (loss)	2,411		297		1,820	2,194
Operating Segments | General Contracting and Real Estate Services
Segment Reporting Information
Rental revenues	0		0		0	0
General contracting and real estate services revenues	31,976		116,839		78,590	243,814
Interest income (real estate financing segment)	0		0		0	0
Total revenues	31,976		116,839		78,590	243,814
Rental expenses	0		0		0	0
Real estate taxes	0		0		0	0
General contracting and real estate services expenses	30,592		112,500		75,842	235,398
Interest expense (real estate financing segment)	0		0		0	0
Total segment operating expenses	30,592		112,500		75,842	235,398
Segment net operating income	1,384		4,339		2,748	8,416
Interest income (excluding real estate financing segment)	0		0		0	0
Depreciation and amortization	0		0		0	0
General and administrative expenses	0		0		0	0
Acquisition, development, and other pursuit costs	(257)		0		(257)	0
Impairment charges			0			0
Gain (loss) on real estate dispositions, net			0
Interest expense (excluding real estate financing segment)	0		0		0	0
Equity in loss of unconsolidated real estate entities	0		0		0
Gain on consolidation of real estate entities	0		0		0
Loss on extinguishment of debt			0
Change in fair value of derivatives and other	0		0		0	0
Unrealized credit loss provision	0		0		0	0
Other income (expense), net	0		0		0	0
Income tax provision	567		(388)		377	(922)
Net income (loss)	1,694		3,951		2,868	7,494
Operating Segments | Real Estate Financing
Segment Reporting Information
Rental revenues	0		0		0	0
General contracting and real estate services revenues	0		0		0	0
Interest income (real estate financing segment)	3,673		3,966		7,409	7,966
Total revenues	3,673		3,966		7,409	7,966
Rental expenses	0		0		0	0
Real estate taxes	0		0		0	0
General contracting and real estate services expenses	0		0		0	0
Interest expense (real estate financing segment)	1,927		1,767		3,641	3,099
Total segment operating expenses	1,927		1,767		3,641	3,099
Segment net operating income	1,746		2,199		3,768	4,867
Interest income (excluding real estate financing segment)	0		0		0	0
Depreciation and amortization	0		0		0	0
General and administrative expenses	0		0		0	0
Acquisition, development, and other pursuit costs	0		0		0	0
Impairment charges			0			0
Gain (loss) on real estate dispositions, net			0
Interest expense (excluding real estate financing segment)	0		0		0	0
Equity in loss of unconsolidated real estate entities	0		0		0
Gain on consolidation of real estate entities	0		0		0
Loss on extinguishment of debt			0
Change in fair value of derivatives and other	104		562		(103)	2,189
Unrealized credit loss provision	(33)		227		(55)	149
Other income (expense), net	0		0		0	0
Income tax provision	0		0		0	0
Net income (loss)	1,817		2,988		3,610	7,205
Other
Segment Reporting Information
Rental revenues	0		0		0	0
General contracting and real estate services revenues	0		0		0	0
Interest income (real estate financing segment)	467		666		959	1,292
Total revenues	467		666		959	1,292
Rental expenses	0		0		0	0
Real estate taxes	0		0		0	0
General contracting and real estate services expenses	0		0		0	0
Interest expense (real estate financing segment)	0		0		0	0
Total segment operating expenses	0		0		0	0
Segment net operating income	467		666		959	1,292
Interest income (excluding real estate financing segment)	(65)		(52)		(116)	(82)
Depreciation and amortization	(67)		(123)		(258)	(267)
General and administrative expenses	(5,998)		(4,503)		(13,384)	(10,377)
Acquisition, development, and other pursuit costs	(29)		0		(83)	0
Impairment charges			0			0
Gain (loss) on real estate dispositions, net			0
Interest expense (excluding real estate financing segment)	0		0		0	0
Equity in loss of unconsolidated real estate entities	0		0		0
Gain on consolidation of real estate entities	0		0		0
Loss on extinguishment of debt			0
Change in fair value of derivatives and other	0		786		0	2,982
Unrealized credit loss provision	242		1		242	(4)
Other income (expense), net	1		21		(90)	42
Income tax provision	0		0		0	0
Net income (loss)	(5,449)		(3,204)		(12,730)	(6,414)
Intercompany Eliminations | General Contracting and Real Estate Services
Segment Reporting Information
General contracting and real estate services revenues	4,300		4,300		7,100	12,700
General contracting and real estate services expenses	$ 4,200		$ 4,300		$ 7,000	$ 12,600