CONSOLIDATED STATEMENTS OF OPERATIONS - BRANDYWINE OPERATING PARTNERSHIP, L.P. - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Revenue
Total revenue	$ 121,516	$ 126,484
Operating expenses
Property operating expenses	33,526	32,279
Real estate taxes	11,432	12,592
Third party management expenses	2,633	2,543
Depreciation and amortization	44,353	45,042
General and administrative expenses	17,470	11,104
Total operating expenses	109,414	103,560
Gain on sale of real estate
Net gain on disposition of real estate	3,059	0
Total gain on sale of real estate	3,059	0
Operating income	15,161	22,924
Other income (expense):
Interest and investment income	1,186	421
Interest expense	(31,845)	(25,049)
Interest expense - amortization of deferred financing costs	(1,230)	(1,091)
Equity in loss of unconsolidated real estate ventures	(10,511)	(13,588)
Net gain (loss) on real estate venture transactions	183	(29)
Net loss before income taxes	(27,056)	(16,412)
Income tax provision	0	(2)
Net loss	(27,056)	(16,414)
Nonforfeitable dividends allocated to unvested restricted unitholders	(429)	(336)
Net loss attributable to Common Shareholders of Brandywine Realty Trust	$ (27,404)	$ (16,704)
Basic loss per Common Partnership Unit (in dollars per share)	$ (0.16)	$ (0.10)
Diluted loss per Common Partnership Unit (in dollars per share)	$ (0.16)	$ (0.10)
Basic weighted average common partnership units outstanding (in shares)	172,915,482	172,207,037
Diluted weighted average common partnership units outstanding (in shares)	172,915,482	172,207,037
Brandywine Operating Partnership, L.P.
Revenue
Total revenue	$ 121,516	$ 126,484
Operating expenses
Property operating expenses	33,526	32,279
Real estate taxes	11,432	12,592
Third party management expenses	2,633	2,543
Depreciation and amortization	44,353	45,042
General and administrative expenses	17,470	11,104
Total operating expenses	109,414	103,560
Gain on sale of real estate
Net gain on disposition of real estate	3,059	0
Total gain on sale of real estate	3,059	0
Operating income	15,161	22,924
Other income (expense):
Interest and investment income	1,186	421
Interest expense	(31,845)	(25,049)
Interest expense - amortization of deferred financing costs	(1,230)	(1,091)
Equity in loss of unconsolidated real estate ventures	(10,511)	(13,588)
Net gain (loss) on real estate venture transactions	183	(29)
Net loss before income taxes	(27,056)	(16,412)
Income tax provision	0	(2)
Net loss	(27,056)	(16,414)
Net income attributable to noncontrolling interests - consolidated real estate ventures	0	(3)
Net loss attributable to Brandywine Operating Partnership, L.P.	(27,056)	(16,417)
Nonforfeitable dividends allocated to unvested restricted unitholders	(429)	(336)
Net loss attributable to Common Shareholders of Brandywine Realty Trust	$ (27,485)	$ (16,753)
Basic loss per Common Partnership Unit (in dollars per share)	$ (0.16)	$ (0.10)
Diluted loss per Common Partnership Unit (in dollars per share)	$ (0.16)	$ (0.10)
Basic weighted average common partnership units outstanding (in shares)	173,431,077	172,722,632
Diluted weighted average common partnership units outstanding (in shares)	173,431,077	172,722,632
Rents
Revenue
Total revenue	$ 114,428	$ 119,008
Rents | Brandywine Operating Partnership, L.P.
Revenue
Total revenue	114,428	119,008
Third party management fees, labor reimbursement and leasing
Revenue
Total revenue	5,829	5,894
Third party management fees, labor reimbursement and leasing | Brandywine Operating Partnership, L.P.
Revenue
Total revenue	5,829	5,894
Other
Revenue
Total revenue	1,259	1,582
Other | Brandywine Operating Partnership, L.P.
Revenue
Total revenue	$ 1,259	$ 1,582