Consolidated Statement of Cash Flows (Parentheticals) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Supplemental Cash Flow Information [Abstract]
Cash paid for interest, net of capitalized interest during the nine months ended September 30, 2015 and 2014 of $8,764 and $4,466, respectively	$ 8,764	$ 4,466
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Supplemental Cash Flow Information [Abstract]
Cash paid for interest, net of capitalized interest during the nine months ended September 30, 2015 and 2014 of $8,764 and $4,466, respectively	$ 8,764	$ 4,466