CONSOLIDATED BALANCE SHEETS - BRANDYWINE OPERATING PARTNERSHIP, L.P. - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Real estate investments:
Operating properties	$ 3,694,633	$ 3,617,240
Accumulated depreciation	(1,153,030)	(1,063,060)
Right of use asset - operating leases, net	19,188	19,664
Operating real estate investments, net	2,560,791	2,573,844
Construction-in-progress	143,929	218,869
Land held for development	76,058	76,499
Prepaid leasehold interests in land held for development, net	27,762	35,576
Total real estate investments, net	2,808,540	2,904,788
Cash and cash equivalents	47,872	17,551
Restricted cash and escrows	10,745	0
Accounts receivable	23,130	11,003
Accrued rent receivable, net of allowance of $3,158 and $3,947 as of September 30, 2023 and December 31, 2022, respectively	185,135	179,771
Investment in unconsolidated real estate ventures	638,096	567,635
Deferred costs, net	98,049	96,639
Intangible assets, net	8,539	18,451
Other assets	102,557	78,667
Total assets	3,922,663	3,874,505
LIABILITIES AND PARTNERS' EQUITY
Mortgage notes payable, net	241,654	0
Unsecured credit facility	0	88,500
Unsecured term loan, net	318,282	248,168
Unsecured senior notes, net	1,574,524	1,628,370
Accounts payable and accrued expenses	132,731	132,440
Distributions payable	26,018	32,792
Deferred income, gains and rent	23,222	25,082
Intangible liabilities, net	8,536	10,322
Lease liability - operating leases	23,318	23,166
Other liabilities	60,010	52,331
Total liabilities	2,408,295	2,241,171
Commitments and contingencies (See Note 14)
Brandywine Operating Partnership, L.P.'s equity:
Accumulated other comprehensive income	8,125	3,897
Total liabilities and beneficiaries' equity	3,922,663	3,874,505
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Real estate investments:
Operating properties	3,694,633	3,617,240
Accumulated depreciation	(1,153,030)	(1,063,060)
Right of use asset - operating leases, net	19,188	19,664
Operating real estate investments, net	2,560,791	2,573,844
Construction-in-progress	143,929	218,869
Land held for development	76,058	76,499
Prepaid leasehold interests in land held for development, net	27,762	35,576
Total real estate investments, net	2,808,540	2,904,788
Cash and cash equivalents	47,872	17,551
Restricted cash and escrows	10,745	0
Accounts receivable	23,130	11,003
Accrued rent receivable, net of allowance of $3,158 and $3,947 as of September 30, 2023 and December 31, 2022, respectively	185,135	179,771
Investment in unconsolidated real estate ventures	638,096	567,635
Deferred costs, net	98,049	96,639
Intangible assets, net	8,539	18,451
Other assets	102,557	78,667
Total assets	3,922,663	3,874,505
LIABILITIES AND PARTNERS' EQUITY
Mortgage notes payable, net	241,654	0
Unsecured credit facility	0	88,500
Unsecured term loan, net	318,282	248,168
Unsecured senior notes, net	1,574,524	1,628,370
Accounts payable and accrued expenses	132,731	132,440
Distributions payable	26,018	32,792
Deferred income, gains and rent	23,222	25,082
Intangible liabilities, net	8,536	10,322
Lease liability - operating leases	23,318	23,166
Other liabilities	60,010	52,331
Total liabilities	2,408,295	2,241,171
Commitments and contingencies (See Note 14)
Redeemable limited partnership units at redemption value; 516,467 and 516,467 issued and outstanding as of September 30, 2023 and December 31, 2022, respectively	2,282	3,195
Brandywine Operating Partnership, L.P.'s equity:
General Partnership Capital; $172,097,661 and 171,569,807 units issued and outstanding as of September 30, 2023 and December 31, 2022, respectively	1,501,466	1,623,738
Accumulated other comprehensive income	7,809	3,569
Total Brandywine Operating Partnership, L.P.'s equity	1,509,275	1,627,307
Noncontrolling interest - consolidated real estate ventures	2,811	2,832
Total partners' equity	1,512,086	1,630,139
Total liabilities and beneficiaries' equity	$ 3,922,663	$ 3,874,505