CONSOLIDATED STATEMENTS OF OPERATIONS - BRANDYWINE OPERATING PARTNERSHIP, L.P. - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue
Total revenue	$ 120,571	$ 125,346	$ 242,087	$ 251,830
Operating expenses
Property operating expenses	31,365	31,353	64,891	63,632
Real estate taxes	11,507	12,535	22,939	25,127
Third party management expenses	2,484	2,426	5,117	4,969
Depreciation and amortization	43,762	44,187	88,115	89,229
General and administrative expenses	9,325	8,941	26,795	20,045
Provision for impairment	63,369	6,427	63,369	6,427
Total operating expenses	161,812	105,869	271,226	209,429
Gain (loss) on sale of real estate
Net gain (loss) on disposition of real estate	(86)	0	2,973	0
Total gain (loss) on sale of real estate	(86)	0	2,973	0
Operating income (loss)	(41,327)	19,477	(26,166)	42,401
Other income (expense):
Interest and investment income	850	1,512	2,036	1,933
Interest expense	(32,345)	(29,494)	(64,190)	(54,543)
Interest expense - amortization of deferred financing costs	(1,197)	(1,415)	(2,427)	(2,506)
Equity in loss of unconsolidated real estate ventures	(14,832)	(14,507)	(25,343)	(28,095)
Net gain on real estate venture transactions	0	53,762	183	53,733
Gain on early extinguishment of debt	0	941	0	941
Net income (loss) before income taxes	(88,851)	30,276	(115,907)	13,864
Income tax provision	(85)	(9)	(85)	(11)
Net income (loss)	(88,936)	30,267	(115,992)	13,853
Nonforfeitable dividends allocated to unvested restricted unitholders	(322)	(277)	(751)	(613)
Net income (loss) attributable to Common Partnership Unitholders of Brandywine Operating Partnership, L.P.	$ (88,991)	$ 29,896	$ (116,395)	$ 13,192
Basic income (loss) per Common Partnership Unit (in dollars per share)	$ (0.51)	$ 0.17	$ (0.67)	$ 0.08
Diluted income (loss) per Common Partnership Unit (in dollars per share)	$ (0.51)	$ 0.17	$ (0.67)	$ 0.08
Basic weighted average common partnership units outstanding (in shares)	173,532,583	172,563,136	173,225,737	172,385,087
Diluted weighted average common partnership units outstanding (in shares)	173,532,583	174,695,651	173,225,737	174,342,151
Brandywine Operating Partnership, L.P.
Revenue
Total revenue	$ 120,571	$ 125,346	$ 242,087	$ 251,830
Operating expenses
Property operating expenses	31,365	31,353	64,891	63,632
Real estate taxes	11,507	12,535	22,939	25,127
Third party management expenses	2,484	2,426	5,117	4,969
Depreciation and amortization	43,762	44,187	88,115	89,229
General and administrative expenses	9,325	8,941	26,795	20,045
Provision for impairment	63,369	6,427	63,369	6,427
Total operating expenses	161,812	105,869	271,226	209,429
Gain (loss) on sale of real estate
Net gain (loss) on disposition of real estate	(86)	0	2,973	0
Total gain (loss) on sale of real estate	(86)	0	2,973	0
Operating income (loss)	(41,327)	19,477	(26,166)	42,401
Other income (expense):
Interest and investment income	850	1,512	2,036	1,933
Interest expense	(32,345)	(29,494)	(64,190)	(54,543)
Interest expense - amortization of deferred financing costs	(1,197)	(1,415)	(2,427)	(2,506)
Equity in loss of unconsolidated real estate ventures	(14,832)	(14,507)	(25,343)	(28,095)
Net gain on real estate venture transactions	0	53,762	183	53,733
Gain on early extinguishment of debt	0	941	0	941
Net income (loss) before income taxes	(88,851)	30,276	(115,907)	13,864
Income tax provision	(85)	(9)	(85)	(11)
Net income (loss)	(88,936)	30,267	(115,992)	13,853
Net income attributable to noncontrolling interests - consolidated real estate ventures	0	(3)	0	(6)
Net income (loss) attributable to Brandywine Operating Partnership, L.P.	(88,936)	30,264	(115,992)	13,847
Nonforfeitable dividends allocated to unvested restricted unitholders	(322)	(277)	(751)	(613)
Net income (loss) attributable to Common Partnership Unitholders of Brandywine Operating Partnership, L.P.	$ (89,258)	$ 29,987	$ (116,743)	$ 13,234
Basic income (loss) per Common Partnership Unit (in dollars per share)	$ (0.51)	$ 0.17	$ (0.67)	$ 0.08
Diluted income (loss) per Common Partnership Unit (in dollars per share)	$ (0.51)	$ 0.17	$ (0.67)	$ 0.08
Basic weighted average common partnership units outstanding (in shares)	174,048,178	173,078,731	173,741,332	172,900,681
Diluted weighted average common partnership units outstanding (in shares)	174,048,178	175,211,246	173,741,332	174,857,745
Rents
Revenue
Total revenue	$ 114,196	$ 118,009	$ 228,624	$ 237,017
Rents | Brandywine Operating Partnership, L.P.
Revenue
Total revenue	114,196	118,009	228,624	237,017
Third party management fees, labor reimbursement and leasing
Revenue
Total revenue	4,873	5,698	10,702	11,592
Third party management fees, labor reimbursement and leasing | Brandywine Operating Partnership, L.P.
Revenue
Total revenue	4,873	5,698	10,702	11,592
Other
Revenue
Total revenue	1,502	1,639	2,761	3,221
Other | Brandywine Operating Partnership, L.P.
Revenue
Total revenue	$ 1,502	$ 1,639	$ 2,761	$ 3,221