Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net income (loss)	$ 8,594	$ (2,245)
Adjustments to reconcile net income (loss) to net cash from operating activities:
Depreciation and amortization	51,111	52,570
Amortization of deferred financing costs	1,079	1,189
Amortization of debt discount/(premium), net	(158)	(162)
Amortization of stock compensation costs	2,756	3,048
Shares used for employee taxes upon vesting of share awards	(1,359)	(531)
Straight-line rent income	(6,339)	(3,592)
Amortization of acquired above (below) market leases, net	(1,290)	(1,957)
Straight-line ground rent expense	22	22
Provision for doubtful accounts	380	897
Loss on real estate venture transactions	0	135
Net gain on sale of interests in real estate	(9,019)	(1,187)
Provision for impairment on assets held for sale	1,726	0
Real Estate Venture (income) loss and cash distributions	163	(123)
Deferred financing obligation	(287)	(272)
Changes in assets and liabilities:
Accounts receivable	(170)	(5,759)
Other assets	(9,322)	(7,508)
Accounts payable and accrued expenses	11,131	14,400
Deferred income, gains and rent	(3,267)	1,714
Other liabilities	(140)	(199)
Net cash from operating activities	45,611	50,440
Cash flows from investing activities:
Acquisition of properties	0	(13,972)
Sales of properties, net	26,778	3,350
Proceeds from repayment of mortgage notes receivable	88,000	1,200
Capital expenditures for tenant improvements	(14,515)	(36,222)
Capital expenditures for redevelopments	(5,984)	(1,031)
Capital expenditures for developments	(37,867)	(1,851)
Advances for purchase of tenant assets, net of repayments	(138)	94
Investment in unconsolidated Real Estate Ventures	(11,028)	(808)
Deposits for real estate	(5,995)	0
Escrowed cash	2,868	1,636
Cash distributions from unconsolidated Real Estate Ventures in excess of cumulative equity income	2,563	2,828
Leasing costs	(6,371)	(3,589)
Net cash from (used in) investing activities	38,311	(48,365)
Cash flows from financing activities:
Repayments of mortgage notes payable	(3,546)	(3,349)
Debt financing costs	0	(35)
Exercise of stock options	127	0
Distributions paid to shareholders	(28,692)	(25,330)
Distributions to noncontrolling interest	(230)	(277)
Net cash used in financing activities	(32,341)	(28,991)
Increase (Decrease) in cash and cash equivalents	51,581	(26,916)
Cash and cash equivalents at beginning of period	257,502	263,207
Cash and cash equivalents at end of period	309,083	236,291
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the three months ended March 31, 2015 and 2014 of $2,703 and $1,230, respectively	18,080	19,213
Supplemental disclosure of non-cash activity:
Change in capital expenditures financed through accounts payable at period end	(440)	8,228
Change in capital expenditures financed through retention payable at period end	2,200	538
Change in unfunded tenant allowance	0	(43)
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Net income (loss)	8,594	(2,245)
Adjustments to reconcile net income (loss) to net cash from operating activities:
Depreciation and amortization	51,111	52,570
Amortization of deferred financing costs	1,079	1,189
Amortization of debt discount/(premium), net	(158)	(162)
Amortization of stock compensation costs	2,756	3,048
Shares used for employee taxes upon vesting of share awards	(1,359)	(531)
Straight-line rent income	(6,339)	(3,592)
Amortization of acquired above (below) market leases, net	(1,290)	(1,957)
Straight-line ground rent expense	22	22
Provision for doubtful accounts	380	897
Loss on real estate venture transactions	0	135
Net gain on sale of interests in real estate	(9,019)	(1,187)
Provision for impairment on assets held for sale	1,726	0
Real Estate Venture (income) loss and cash distributions	163	(123)
Deferred financing obligation	(287)	(272)
Changes in assets and liabilities:
Accounts receivable	(170)	(5,759)
Other assets	(9,322)	(7,508)
Accounts payable and accrued expenses	11,131	14,400
Deferred income, gains and rent	(3,267)	1,714
Other liabilities	(140)	(199)
Net cash from operating activities	45,611	50,440
Cash flows from investing activities:
Acquisition of properties	0	(13,972)
Sales of properties, net	26,778	3,350
Proceeds from repayment of mortgage notes receivable	88,000	1,200
Capital expenditures for tenant improvements	(14,515)	(36,222)
Capital expenditures for redevelopments	(5,984)	(1,031)
Capital expenditures for developments	(37,867)	(1,851)
Advances for purchase of tenant assets, net of repayments	(138)	94
Investment in unconsolidated Real Estate Ventures	(11,028)	(808)
Deposits for real estate	(5,995)
Escrowed cash	2,868	1,636
Cash distributions from unconsolidated Real Estate Ventures in excess of cumulative equity income	2,563	2,828
Leasing costs	(6,371)	(3,589)
Net cash from (used in) investing activities	38,311	(48,365)
Cash flows from financing activities:
Repayments of mortgage notes payable	(3,546)	(3,349)
Debt financing costs	0	(35)
Exercise of stock options	127	0
Distributions paid to shareholders	(28,922)	(25,607)
Net cash used in financing activities	(32,341)	(28,991)
Increase (Decrease) in cash and cash equivalents	51,581	(26,916)
Cash and cash equivalents at beginning of period	257,502	263,207
Cash and cash equivalents at end of period	309,083	236,291
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the three months ended March 31, 2015 and 2014 of $2,703 and $1,230, respectively	18,080	19,213
Supplemental disclosure of non-cash activity:
Change in capital expenditures financed through accounts payable at period end	(440)	8,228
Change in capital expenditures financed through retention payable at period end	2,200	538
Change in unfunded tenant allowance	$ 0	$ (43)