Consolidated Balance Sheets - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Real estate investments:
Operating properties		$ 3,953,319	$ 3,832,348
Accumulated depreciation		(865,462)	(895,091)
Operating real estate investments, net		3,087,857	2,937,257
Construction-in-progress		150,263	121,188
Land held for development	[1]	86,401	98,242
Prepaid leasehold interests in land held for development, net	[2]	39,999	0
Total real estate investments, net		3,364,520	3,156,687
Assets held for sale, net		11,599	392
Cash and cash equivalents		22,842	202,179
Accounts receivable, net of allowance of $1,653 and $3,467 as of December 31, 2018 and December 31, 2017, respectively		16,394	17,938
Accrued rent receivable, net of allowance of $11,266 and $13,645 as of December 31, 2018 and December 31, 2017, respectively		165,243	169,760
Investment in Real Estate Ventures, equity method		169,100	194,621
Deferred costs, net		91,075	96,695
Intangible assets, net		131,348	64,972
Other assets		126,400	92,204
Total assets		4,098,521	3,995,448
LIABILITIES AND EQUITY
Mortgage notes payable, net		320,869	317,216
Unsecured credit facility		92,500	0
Unsecured term loan, net		248,042	248,429
Unsecured senior notes, net		1,366,635	1,365,183
Accounts payable and accrued expenses		125,696	107,074
Distributions payable		33,632	32,456
Deferred income, gains and rent		28,293	42,593
Acquired lease intangibles, net		31,783	20,274
Other liabilities		18,498	15,623
Total liabilities		2,265,948	2,148,848
Commitments and contingencies
Equity:
Common Shares of Brandywine Realty Trust's beneficial interest, $0.01 par value; shares authorized 400,000,000; 176,873,324 and 178,285,236 issued and outstanding as of December 31, 2018 and December 31, 2017, respectively		1,770	1,784
Additional paid-in-capital		3,200,850	3,218,564
Deferred compensation payable in common shares		14,021	12,445
Common shares in grantor trust, 977,120 and 894,736 issued and outstanding as of December 31, 2018 and December 31, 2017, respectively		(14,021)	(12,445)
Cumulative earnings		796,513	660,174
Accumulated other comprehensive income		5,029	2,399
Cumulative distributions		(2,183,909)	(2,053,741)
Total Brandywine Realty Trust's equity		1,820,253	1,829,180
Noncontrolling interests		12,320	17,420
Total beneficiaries' equity		1,832,573	1,846,600
Total liabilities and beneficiaries' equity		4,098,521	3,995,448
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Real estate investments:
Operating properties		3,953,319	3,832,348
Accumulated depreciation		(865,462)	(895,091)
Operating real estate investments, net		3,087,857	2,937,257
Construction-in-progress		150,263	121,188
Land held for development		86,401	98,242
Prepaid leasehold interests in land held for development, net		39,999	0
Total real estate investments, net		3,364,520	3,156,687
Assets held for sale, net		11,599	392
Cash and cash equivalents		22,842	202,179
Accounts receivable, net of allowance of $1,653 and $3,467 as of December 31, 2018 and December 31, 2017, respectively		16,394	17,938
Accrued rent receivable, net of allowance of $11,266 and $13,645 as of December 31, 2018 and December 31, 2017, respectively		165,243	169,760
Investment in Real Estate Ventures, equity method		169,100	194,621
Deferred costs, net		91,075	96,695
Intangible assets, net		131,348	64,972
Other assets		126,400	92,204
Total assets		4,098,521	3,995,448
LIABILITIES AND EQUITY
Mortgage notes payable, net		320,869	317,216
Unsecured credit facility		92,500
Unsecured term loan, net		248,042	248,429
Unsecured senior notes, net		1,366,635	1,365,183
Accounts payable and accrued expenses		125,696	107,074
Distributions payable		33,632	32,456
Deferred income, gains and rent		28,293	42,593
Acquired lease intangibles, net		31,783	20,274
Other liabilities		18,498	15,623
Total liabilities		2,265,948	2,148,848
Commitments and contingencies
Redeemable limited partnership units at redemption value; 1,479,799 and 1,535,102 issued and outstanding in 2016 and 2015, respectively		12,520	26,918
Equity:
General Partnership Capital; 176,873,324 and 178,285,236 units issued and outstanding as of December 31, 2018 and December 31, 2017, respectively		1,813,136	1,815,411
Accumulated other comprehensive income		4,725	2,056
Total Brandywine Operating Partnership, L.P.'s equity		1,817,861	1,817,467
Noncontrolling interest - consolidated real estate ventures		2,192	2,215
Total partners' equity		1,820,053	1,819,682
Total liabilities and beneficiaries' equity		$ 4,098,521	$ 3,995,448

[1] As of December 31, 2018, the Company classified 37.9 acres of land held for development, comprised of 2.7 acres and 35.2 acres, located in its Pennsylvania Suburbs segment and Other segment, respectively, as held for sale in accordance with applicable accounting standards for long lived assets. See Note 3, “Real Estate Investments,” for further information. As of December 31, 2017, the Company classified 13.1 acres of land held for development located in its Other segment as held for sale in accordance with applicable accounting standards for long lived assets.

[2] As of December 31, 2018, this caption comprised leasehold interests in prepaid 99-year ground leases at 3025 and 3001-3003 JFK Boulevard, in Philadelphia, Pennsylvania. See Note 3, “Real Estate Investments,” for further information.