Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net income (loss)	$ 6,529	$ (4,715)	$ (17,606)
Comprehensive income (loss):
Unrealized gain (loss) on derivative financial instruments	(7,338)	(4,499)	7,320
Derivative Instruments, Gain (Loss) Recognized in Income, Net	(2,985)	0	0
Reclassification of realized (gains)/losses on derivative financial instruments to operations, net	297	153	28
Total comprehensive income (loss)	(10,026)	(4,346)	7,348
Comprehensive income (loss)	(3,497)	(9,061)	(10,258)
Comprehensive (income) loss attributable to non-controlling interest	261	427	377
Comprehensive income (loss) attributable to Brandywine Realty Trust	(3,236)	(8,634)	(9,881)
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Net income (loss)	6,529	(4,715)	(17,606)
Comprehensive income (loss):
Unrealized gain (loss) on derivative financial instruments	(7,338)	(4,499)	7,320
Derivative Instruments, Gain (Loss) Recognized in Income, Net	(2,985)	0	0
Reclassification of realized (gains)/losses on derivative financial instruments to operations, net	297	153	28
Total comprehensive income (loss)	(10,026)	(4,346)	7,348
Comprehensive income (loss) attributable to Brandywine Realty Trust	$ (3,497)	$ (9,061)	$ (10,258)