CONSOLIDATED STATEMENTS OF OPERATIONS - BRANDYWINE OPERATING PARTNERSHIP, L.P. - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue
Total revenue	$ 124,042	$ 120,102	$ 251,547	$ 240,871
Operating expenses
Property operating expenses	33,111	29,264	64,659	58,199
Real estate taxes	13,746	14,602	27,559	29,363
Third party management expenses	2,792	3,561	5,349	6,539
Depreciation and amortization	43,959	42,785	87,741	83,128
General and administrative expenses	8,328	8,356	18,328	14,940
Total operating expenses	101,936	98,568	203,636	192,169
Gain on sale of real estate
Net gain on disposition of real estate	144	68	144	142
Net gain on sale of undepreciated real estate	4,127	0	5,024	1,993
Total gain on sale of real estate	4,271	68	5,168	2,135
Operating income	26,377	21,602	53,079	50,837
Other income (expense):
Interest and investment income	449	1,677	889	3,351
Interest expense	(16,341)	(15,490)	(32,083)	(31,783)
Interest expense - amortization of deferred financing costs	(805)	(709)	(1,514)	(1,418)
Equity in loss of unconsolidated real estate ventures	(4,981)	(7,240)	(9,544)	(14,164)
Net income (loss) before income taxes	4,699	(160)	10,827	6,823
Income tax provision	(48)	(15)	(75)	(34)
Net income (loss)	4,651	(175)	10,752	6,789
Nonforfeitable dividends allocated to unvested restricted shareholders	(98)	(94)	(246)	(240)
Net income (loss) attributable to Common Partnership Unitholders of Brandywine Operating Partnership, L.P.	$ 4,539	$ (261)	$ 10,484	$ 6,514
Basic income per Common Share (in dollars per share)	$ 0.03	$ 0	$ 0.06	$ 0.04
Diluted income per Common Share (in dollars per share)	$ 0.03	$ 0	$ 0.06	$ 0.04
Basic weighted average common partnership units outstanding (in shares)	171,527,031	170,848,894	171,411,631	170,737,437
Diluted weighted average common partnership units outstanding (in shares)	172,260,429	170,848,894	172,575,408	171,996,119
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue
Total revenue	$ 124,042	$ 120,102	$ 251,547	$ 240,871
Operating expenses
Property operating expenses	33,111	29,264	64,659	58,199
Real estate taxes	13,746	14,602	27,559	29,363
Third party management expenses	2,792	3,561	5,349	6,539
Depreciation and amortization	43,959	42,785	87,741	83,128
General and administrative expenses	8,328	8,356	18,328	14,940
Total operating expenses	101,936	98,568	203,636	192,169
Gain on sale of real estate
Net gain on disposition of real estate	144	68	144	142
Net gain on sale of undepreciated real estate	4,127	0	5,024	1,993
Total gain on sale of real estate	4,271	68	5,168	2,135
Operating income	26,377	21,602	53,079	50,837
Other income (expense):
Interest and investment income	449	1,677	889	3,351
Interest expense	(16,341)	(15,490)	(32,083)	(31,783)
Interest expense - amortization of deferred financing costs	(805)	(709)	(1,514)	(1,418)
Equity in loss of unconsolidated real estate ventures	(4,981)	(7,240)	(9,544)	(14,164)
Net income (loss) before income taxes	4,699	(160)	10,827	6,823
Income tax provision	(48)	(15)	(75)	(34)
Net income (loss)	4,651	(175)	10,752	6,789
Net loss attributable to noncontrolling interests - consolidated real estate ventures	2	1	4	2
Net income (loss) attributable to Brandywine Operating Partnership	4,653	(174)	10,756	6,791
Nonforfeitable dividends allocated to unvested restricted shareholders	(98)	(94)	(246)	(240)
Net income (loss) attributable to Common Partnership Unitholders of Brandywine Operating Partnership, L.P.	$ 4,555	$ (268)	$ 10,510	$ 6,551
Basic income per Common Share (in dollars per share)	$ 0.03	$ 0	$ 0.06	$ 0.04
Diluted income per Common Share (in dollars per share)	$ 0.03	$ 0	$ 0.06	$ 0.04
Basic weighted average common partnership units outstanding (in shares)	172,043,498	171,792,415	171,985,863	171,699,909
Diluted weighted average common partnership units outstanding (in shares)	172,776,896	171,792,415	173,149,640	172,958,591
Rents
Revenue
Total revenue	$ 116,897	$ 111,235	$ 232,798	$ 224,719
Rents | BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue
Total revenue	116,897	111,235	232,798	224,719
Third party management fees, labor reimbursement and leasing
Revenue
Total revenue	5,924	6,627	11,032	13,278
Third party management fees, labor reimbursement and leasing | BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue
Total revenue	5,924	6,627	11,032	13,278
Other
Revenue
Total revenue	1,221	2,240	7,717	2,874
Other | BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue
Total revenue	$ 1,221	$ 2,240	$ 7,717	$ 2,874