Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net income	$ 46,310	$ 8,594
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	48,873	51,111
Amortization of deferred financing costs	774	1,079
Amortization of debt discount/(premium), net	382	(158)
Amortization of stock compensation costs	2,296	2,756
Shares used for employee taxes upon vesting of share awards	(289)	(1,359)
Straight-line rent income	(6,104)	(6,339)
Amortization of acquired above (below) market leases, net	(2,232)	(1,290)
Straight-line ground rent expense	22	22
Provision for doubtful accounts	215	380
Net gain on real estate venture transactions	(5,929)	0
Net gain on sale of interests in real estate	(115,456)	(9,019)
Loss on early extinguishment of debt - deferred financing costs	13,157	0
Provision for impairment	7,390	1,726
Real Estate Venture loss in excess of distributions	723	163
Deferred financing obligation	(253)	(287)
Changes in assets and liabilities
Accounts receivable	246	(170)
Other assets	(9,193)	(9,322)
Accounts payable and accrued expenses	6,296	11,131
Deferred income, gains and rent	(2,308)	(3,267)
Other liabilities	552	(140)
Net cash (used in) provided by operating activities	(14,528)	45,611
Cash flows from investing activities:
Proceeds from the sale of properties	704,911	26,778
Distribution of sale proceeds from a real estate venture	4,812	0
Proceeds from repayment of mortgage notes receivable	0	88,000
Capital expenditures for tenant improvements	(13,949)	(14,515)
Capital expenditures for redevelopments	(6,199)	(5,984)
Capital expenditures for developments	(54,405)	(37,867)
Advances for the purchase of tenant assets, net of repayments	360	(138)
Investment in unconsolidated Real Estate Ventures	(14,414)	(11,028)
Deposits for real estate	(2,275)	(5,995)
Escrowed cash	6,991	2,868
Cash distribution from unconsolidated Real Estate Ventures in excess of cumulative equity income	1,436	2,563
Leasing costs paid	(4,716)	(6,371)
Net cash provided from investing activities	622,552	38,311
Cash flows from financing activities:
Repayments of mortgage notes payable	(213,739)	(3,546)
Proceeds from credit facility borrowings	195,000	0
Repayments of credit facility borrowings	(195,000)	0
Debt financing costs paid	(72)	0
Proceeds from the exercise of stock options	826	127
Partner contribution to consolidated real estate venture	18	0
Distributions paid to shareholders	(28,004)	(28,692)
Distributions to non-controlling interest	(230)	(230)
Net cash used in financing activities	(241,201)	(32,341)
Increase in cash and cash equivalents	366,823	51,581
Cash and cash equivalents at beginning of year	56,694	257,502
Cash and cash equivalents at end of year	423,517	309,083
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the three months ended March 31, 2016 and 2015 of $3,671 and $2,703, respectively	13,656	18,080
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	28,278	29,009
Change in investment in real estate ventures as a result of a disposition	(1,130)	0
Change in investment in real estate ventures related to non-cash disposition of property	25,165	0
Change in capital expenditures financed through accounts payable at period end	4,235	(440)
Change in capital expenditures financed through retention payable at period end	753	2,200
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Cash flows from operating activities:
Net income	46,310	8,594
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	48,873	51,111
Amortization of deferred financing costs	774	1,079
Amortization of debt discount/(premium), net	382	(158)
Amortization of stock compensation costs	2,296	2,756
Shares used for employee taxes upon vesting of share awards	(289)	(1,359)
Straight-line rent income	(6,104)	(6,339)
Amortization of acquired above (below) market leases, net	(2,232)	(1,290)
Straight-line ground rent expense	22	22
Provision for doubtful accounts	215	380
Net gain on real estate venture transactions	(5,929)	0
Net gain on sale of interests in real estate	(115,456)	(9,019)
Loss on early extinguishment of debt - deferred financing costs	13,157	0
Provision for impairment	7,390	1,726
Real Estate Venture loss in excess of distributions	723	163
Deferred financing obligation	(253)	(287)
Changes in assets and liabilities
Accounts receivable	246	(170)
Other assets	(9,193)	(9,322)
Accounts payable and accrued expenses	6,296	11,131
Deferred income, gains and rent	(2,308)	(3,267)
Other liabilities	552	(140)
Net cash (used in) provided by operating activities	(14,528)	45,611
Cash flows from investing activities:
Proceeds from the sale of properties	704,911	26,778
Distribution of sale proceeds from a real estate venture	4,812	0
Proceeds from repayment of mortgage notes receivable	0	88,000
Capital expenditures for tenant improvements	(13,949)	(14,515)
Capital expenditures for redevelopments	(6,199)	(5,984)
Capital expenditures for developments	(54,405)	(37,867)
Advances for the purchase of tenant assets, net of repayments	360	(138)
Investment in unconsolidated Real Estate Ventures	(14,414)	(11,028)
Deposits for real estate	(2,275)	(5,995)
Escrowed cash	6,991	2,868
Cash distribution from unconsolidated Real Estate Ventures in excess of cumulative equity income	1,436	2,563
Leasing costs paid	(4,716)	(6,371)
Net cash provided from investing activities	622,552	38,311
Cash flows from financing activities:
Repayments of mortgage notes payable	(213,739)	(3,546)
Proceeds from credit facility borrowings	195,000	0
Repayments of credit facility borrowings	(195,000)	0
Debt financing costs paid	(72)	0
Proceeds from the exercise of stock options	826	127
Partner contribution to consolidated real estate venture	18	0
Distributions paid to shareholders	(28,234)	(28,922)
Net cash used in financing activities	(241,201)	(32,341)
Increase in cash and cash equivalents	366,823	51,581
Cash and cash equivalents at beginning of year	56,694	257,502
Cash and cash equivalents at end of year	423,517	309,083
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the three months ended March 31, 2016 and 2015 of $3,671 and $2,703, respectively	13,656	18,080
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	28,278	29,009
Change in investment in real estate ventures as a result of a disposition	(1,130)	0
Change in investment in real estate ventures related to non-cash disposition of property	25,165	0
Change in capital expenditures financed through accounts payable at period end	4,235	(440)
Change in capital expenditures financed through retention payable at period end	$ 753	$ 2,200