CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income		$ 6,101	$ 6,964
Other Comprehensive Income (Loss) Net of Tax, Period Change [Abstract]
Unrealized gain on derivative financial instruments		3,764	910
Amortization of interest rate contracts	[1]	188	188
Other comprehensive income		3,952	1,098
Comprehensive income		10,053	8,062
Comprehensive income attributable to noncontrolling interest		(20)	(49)
Comprehensive income attributable to Brandywine Realty Trust		$ 10,033	$ 8,013

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