CONSOLIDATED BALANCE SHEETS - BRANDYWINE OPERATING PARTNERSHIP, L.P. - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Real estate investments:
Operating properties	$ 3,549,674	$ 3,542,232
Accumulated depreciation	(1,163,782)	(1,131,792)
Right of use asset - operating leases, net	18,875	19,031
Operating real estate investments, net	2,404,767	2,429,471
Construction-in-progress	146,194	135,529
Land held for development	81,616	82,510
Prepaid leasehold interests in land held for development, net	27,762	27,762
Total real estate investments, net	2,660,339	2,675,272
Cash and cash equivalents	43,210	58,319
Restricted cash and escrows	8,089	9,215
Accounts receivable	11,628	11,977
Accrued rent receivable, net of allowance of $2,435 and $2,672 as of March 31, 2024 and December 31, 2023, respectively	189,718	186,708
Investment in unconsolidated real estate ventures	618,042	601,227
Deferred costs, net	95,049	95,984
Intangible assets, net	7,112	7,694
Other assets	103,573	86,051
Total assets	3,736,760	3,732,447
LIABILITIES AND PARTNERS' EQUITY
Secured debt, net	260,936	255,671
Unsecured credit facility	37,000	0
Unsecured term loan, net	318,494	318,499
Unsecured senior notes, net	1,564,825	1,564,662
Accounts payable and accrued expenses	114,162	123,825
Distributions payable	26,248	26,017
Deferred income, gains and rent	25,363	24,248
Intangible liabilities, net	8,022	8,270
Lease liability - operating leases	23,415	23,369
Other liabilities	66,049	63,729
Total liabilities	2,444,514	2,408,290
Commitments and contingencies (See Note 15)
Brandywine Operating Partnership, L.P.'s equity:
Accumulated other comprehensive income (loss)	5,339	(668)
Total liabilities and beneficiaries' equity	3,736,760	3,732,447
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Real estate investments:
Operating properties	3,549,674	3,542,232
Accumulated depreciation	(1,163,782)	(1,131,792)
Right of use asset - operating leases, net	18,875	19,031
Operating real estate investments, net	2,404,767	2,429,471
Construction-in-progress	146,194	135,529
Land held for development	81,616	82,510
Prepaid leasehold interests in land held for development, net	27,762	27,762
Total real estate investments, net	2,660,339	2,675,272
Cash and cash equivalents	43,210	58,319
Restricted cash and escrows	8,089	9,215
Accounts receivable	11,628	11,977
Accrued rent receivable, net of allowance of $2,435 and $2,672 as of March 31, 2024 and December 31, 2023, respectively	189,718	186,708
Investment in unconsolidated real estate ventures	618,042	601,227
Deferred costs, net	95,049	95,984
Intangible assets, net	7,112	7,694
Other assets	103,573	86,051
Total assets	3,736,760	3,732,447
LIABILITIES AND PARTNERS' EQUITY
Secured debt, net	260,936	255,671
Unsecured credit facility	37,000	0
Unsecured term loan, net	318,494	318,499
Unsecured senior notes, net	1,564,825	1,564,662
Accounts payable and accrued expenses	114,162	123,825
Distributions payable	26,248	26,017
Deferred income, gains and rent	25,363	24,248
Intangible liabilities, net	8,022	8,270
Lease liability - operating leases	23,415	23,369
Other liabilities	66,049	63,729
Total liabilities	2,444,514	2,408,290
Commitments and contingencies (See Note 15)
Redeemable limited partnership units at redemption value; 515,595 and 515,595 issued and outstanding as of March 31, 2024 and December 31, 2023, respectively	2,392	2,785
Brandywine Operating Partnership, L.P.'s equity:
General Partnership Capital; 172,270,907 and 172,097,661 units issued and outstanding as of March 31, 2024 and December 31, 2023, respectively	1,282,025	1,319,572
Accumulated other comprehensive income (loss)	5,016	(1,010)
Total Brandywine Operating Partnership, L.P.'s equity	1,287,041	1,318,562
Noncontrolling interest - consolidated real estate ventures	2,813	2,810
Total partners' equity	1,289,854	1,321,372
Total liabilities and beneficiaries' equity	$ 3,736,760	$ 3,732,447