CONSOLIDATED STATEMENTS OF OPERATIONS - BRANDYWINE OPERATING PARTNERSHIP, L.P. - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenue
Total revenue	$ 505,517	$ 514,651	$ 506,100
Operating expenses
Property operating expenses	129,890	129,885	130,209
Real estate taxes	47,726	49,974	53,645
Third party management expenses	9,714	10,088	10,547
Depreciation and amortization	178,168	188,797	177,984
General and administrative expenses	42,781	34,862	35,006
Provision for impairment	44,655	131,573	4,663
Total operating expenses	452,934	545,179	412,054
Gain on sale of real estate
Net gain on disposition of real estate	2,297	7,736	17,677
Net gain on sale of undepreciated real estate	0	1,211	8,007
Total gain on sale of real estate	2,297	8,947	25,684
Operating income (loss)	54,880	(21,581)	119,730
Other income (expense):
Interest expense	(116,306)	(95,456)	(68,764)
Interest expense - amortization of deferred financing costs	(5,000)	(4,369)	(3,091)
Equity in loss of unconsolidated real estate ventures	(191,585)	(77,915)	(22,016)
Net gain on real estate venture transactions	56,750	181	26,718
Gain (loss) on early extinguishment of debt	941	138	(435)
Net income (loss) before income taxes	(196,473)	(197,331)	54,047
Income tax provision	(14)	(72)	(55)
Net income (loss)	(196,487)	(197,403)	53,992
Nonforfeitable dividends allocated to unvested restricted shareholders	(1,178)	(567)	(456)
Net income (loss) attributable to common shareholders, Basic	$ (197,085)	$ (197,356)	$ 53,368
Basic income (loss) per Common Share (in dollars per shares)	$ (1.14)	$ (1.15)	$ 0.31
Diluted income (loss) per Common Share (in dollars per share)	$ (1.14)	$ (1.15)	$ 0.31
Basic weighted average shares outstanding (in shares)	172,526,996	171,959,210	171,491,369
Diluted weighted average shares outstanding (in shares)	172,526,996	171,959,210	172,325,646
Rents
Revenue
Total revenue	$ 469,242	$ 479,849	$ 470,851
Third party management fees, labor reimbursement and leasing
Revenue
Total revenue	23,742	24,417	24,132
Other
Revenue
Total revenue	12,533	10,385	11,117
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue
Total revenue	505,517	514,651	506,100
Operating expenses
Property operating expenses	129,890	129,885	130,209
Real estate taxes	47,726	49,974	53,645
Third party management expenses	9,714	10,088	10,547
Depreciation and amortization	178,168	188,797	177,984
General and administrative expenses	42,781	34,862	35,006
Provision for impairment	44,655	131,573	4,663
Total operating expenses	452,934	545,179	412,054
Gain on sale of real estate
Net gain on disposition of real estate	2,297	7,736	17,677
Net gain on sale of undepreciated real estate	0	1,211	8,007
Total gain on sale of real estate	2,297	8,947	25,684
Operating income (loss)	54,880	(21,581)	119,730
Other income (expense):
Interest and investment income	3,847	1,671	1,905
Interest expense	(116,306)	(95,456)	(68,764)
Interest expense - amortization of deferred financing costs	(5,000)	(4,369)	(3,091)
Equity in loss of unconsolidated real estate ventures	(191,585)	(77,915)	(22,016)
Net gain on real estate venture transactions	56,750	181	26,718
Gain (loss) on early extinguishment of debt	941	138	(435)
Net income (loss) before income taxes	(196,473)	(197,331)	54,047
Income tax provision	(14)	(72)	(55)
Net income (loss)	(196,487)	(197,403)	53,992
Net (income) loss attributable to noncontrolling interests - consolidated real estate ventures	(5)	22	2
Net income (loss) attributable to Brandywine Operating Partnership	(196,492)	(197,381)	53,994
Nonforfeitable dividends allocated to unvested restricted shareholders	(1,178)	(567)	(456)
Net income (loss) attributable to common shareholders, Basic	$ (197,670)	$ (197,948)	$ 53,538
Basic income (loss) per Common Share (in dollars per shares)	$ (1.14)	$ (1.15)	$ 0.31
Diluted income (loss) per Common Share (in dollars per share)	$ (1.14)	$ (1.15)	$ 0.31
Basic weighted average shares outstanding (in shares)	173,042,591	172,475,645	172,036,481
Diluted weighted average shares outstanding (in shares)	173,042,591	172,475,645	172,870,758
BRANDYWINE OPERATING PARTNERSHIP, L.P. | Rents
Revenue
Total revenue	$ 469,242	$ 479,849	$ 470,851
BRANDYWINE OPERATING PARTNERSHIP, L.P. | Third party management fees, labor reimbursement and leasing
Revenue
Total revenue	23,742	24,417	24,132
BRANDYWINE OPERATING PARTNERSHIP, L.P. | Other
Revenue
Total revenue	$ 12,533	$ 10,385	$ 11,117