Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Real estate investments:
Operating properties	$ 3,474,109	$ 4,006,459
Accumulated depreciation	(896,561)	(973,318)
Right of use asset - operating leases, net	20,977	21,656
Operating real estate investments, net	2,598,525	3,054,797
Construction-in-progress	210,311	180,718
Land held for development	117,984	96,124
Prepaid leasehold interests in land held for development, net	39,185	39,592
Total real estate investments, net	2,966,005	3,371,231
Assets held for sale, net	7,349	7,349
Cash and cash equivalents	46,344	90,499
Accounts receivable, net of allowance of $0 and $284 as of December 31, 2020 and December 31, 2019, respectively	13,536	16,363
Accrued rent receivable, net of allowance of $5,086 and $7,691 as of December 31, 2020 and December 31, 2019, respectively	155,372	174,144
Investment in Real Estate Ventures, equity method	401,327	120,294
Deferred costs, net	84,856	95,560
Intangible assets, net	48,570	84,851
Other assets	176,747	115,678
Total assets	3,900,106	4,075,969
LIABILITIES AND BENEFICIARIES' EQUITY
Mortgage notes payable, net	0	313,812
Unsecured term loan, net	249,084	248,561
Unsecured senior notes, net	1,581,511	1,582,045
Accounts payable and accrued expenses	121,982	113,347
Distributions payable	32,706	33,815
Deferred income, gains and rent	21,396	35,284
Intangible liabilities, net	18,448	22,263
Lease Liability - operating leases	22,758	22,554
Other liabilities	47,573	15,985
Total liabilities	2,095,458	2,387,666
Commitments and contingencies (See Note 20)
Equity:
Common Shares of Brandywine Realty Trust's beneficial interest, $0.01 par value; shares authorized 400,000,000; 170,572,964 and 176,480,095 issued and outstanding as of December 31, 2020 and December 31, 2019, respectively	1,707	1,766
Additional paid-in-capital	3,138,152	3,192,158
Deferred compensation payable in common shares	17,516	16,216
Common shares in grantor trust, 1,160,494 and 1,105,542 issued and outstanding as of December 31, 2020 and December 31, 2019, respectively	(17,516)	(16,216)
Cumulative earnings	1,110,083	804,556
Accumulated other comprehensive loss	(7,561)	(2,370)
Cumulative distributions	(2,448,238)	(2,318,233)
Total Brandywine Realty Trust's equity	1,794,143	1,677,877
Noncontrolling interests	10,505	10,426
Total beneficiaries' equity	1,804,648	1,688,303
Total liabilities and partners' equity	3,900,106	4,075,969
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Real estate investments:
Operating properties	3,474,109	4,006,459
Accumulated depreciation	(896,561)	(973,318)
Right of use asset - operating leases, net	20,977	21,656
Operating real estate investments, net	2,598,525	3,054,797
Construction-in-progress	210,311	180,718
Land held for development	117,984	96,124
Prepaid leasehold interests in land held for development, net	39,185	39,592
Total real estate investments, net	2,966,005	3,371,231
Assets held for sale, net	7,349	7,349
Cash and cash equivalents	46,344	90,499
Accounts receivable, net of allowance of $0 and $284 as of December 31, 2020 and December 31, 2019, respectively	13,536	16,363
Accrued rent receivable, net of allowance of $5,086 and $7,691 as of December 31, 2020 and December 31, 2019, respectively	155,372	174,144
Investment in Real Estate Ventures, equity method	401,327	120,294
Deferred costs, net	84,856	95,560
Intangible assets, net	48,570	84,851
Other assets	176,747	115,678
Total assets	3,900,106	4,075,969
LIABILITIES AND BENEFICIARIES' EQUITY
Mortgage notes payable, net	0	313,812
Unsecured term loan, net	249,084	248,561
Unsecured senior notes, net	1,581,511	1,582,045
Accounts payable and accrued expenses	121,982	113,347
Distributions payable	32,706	33,815
Deferred income, gains and rent	21,396	35,284
Intangible liabilities, net	18,448	22,263
Lease Liability - operating leases	22,758	22,554
Other liabilities	47,573	15,985
Total liabilities	2,095,458	2,387,666
Commitments and contingencies (See Note 20)
Redeemable limited partnership units at redemption value; 981,634 issued and outstanding as of December 31, 2020 and December 31, 2019	11,566	15,388
Equity:
General Partnership Capital; 170,572,964 and 176,480,095 units issued and outstanding as of December 31, 2020 and December 31, 2019, respectively	1,800,945	1,674,539
Accumulated other comprehensive loss	(7,935)	(2,715)
Total Brandywine Operating Partnership, L.P.'s equity	1,793,010	1,671,824
Noncontrolling interest - consolidated real estate ventures	72	1,091
Total partners' equity	1,793,082	1,672,915
Total liabilities and partners' equity	$ 3,900,106	$ 4,075,969