Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income (loss)		$ 121,859	$ 40,501	$ (30,740)
Comprehensive income (loss):
Unrealized gain (loss) on derivative financial instruments		2,948	2,371	(1,010)
Reclassification of realized losses on derivative financial instruments to operations, net	[1]	1,230	1,104	420
Total comprehensive income (loss)		4,178	3,475	(590)
Comprehensive income (loss)		126,037	43,976	(31,330)
Comprehensive (income) loss attributable to noncontrolling interest		(1,043)	(338)	344
Comprehensive income (loss) attributable to reporting entity		124,994	43,638	(30,986)
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Net income (loss)		121,859	40,501	(30,740)
Comprehensive income (loss):
Unrealized gain (loss) on derivative financial instruments		2,948	2,371	(1,010)
Reclassification of realized losses on derivative financial instruments to operations, net	[2]	1,230	1,104	420
Total comprehensive income (loss)		4,178	3,475	(590)
Comprehensive income (loss)		126,037	43,976	(31,330)
Comprehensive (income) loss attributable to noncontrolling interest		(29)	(15)	3
Comprehensive income (loss) attributable to reporting entity		$ 126,008	$ 43,961	$ (31,327)

[1] Amounts reclassified from comprehensive income to interest expense within the Consolidated Statements of Operations.

[2] Amounts reclassified from comprehensive income to interest expense within the Consolidated Statement of Operations.