Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income	$ 44,705	$ 21,271
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	43,291	45,892
Amortization of deferred financing costs	627	634
Amortization of debt discount/(premium), net	176	362
Amortization of stock compensation costs	3,265	3,124
Straight-line rent income	(4,978)	(5,895)
Amortization of acquired above (below) market leases, net	(793)	(1,338)
Straight-line ground rent expense	22	22
Provision for doubtful accounts	467	707
Net gain on real estate venture transactions	(37,263)	(14,582)
Net gain on sale of interests in real estate	(22)	(7,323)
Provision for impairment	0	2,730
Income from Real Estate Ventures, net of distributions	2,209	748
Income tax provision	138	100
Changes in assets and liabilities:
Accounts receivable	(646)	(917)
Other assets	(12,911)	(10,626)
Accounts payable and accrued expenses	(1,146)	9,089
Deferred income, gains and rent	2,295	(3,333)
Other liabilities	(738)	(106)
Net cash provided by operating activities	38,698	40,559
Cash flows from investing activities:
Acquisition of properties	(24,946)	0
Proceeds from the sale of properties	14,921	74,159
Proceeds from real estate venture sales	42,953	27,230
Proceeds from repayment of mortgage notes receivable	562	0
Capital expenditures for tenant improvements	(16,569)	(11,408)
Capital expenditures for redevelopments	(2,429)	(5,505)
Capital expenditures for developments	(19,387)	(21,156)
Advances for the purchase of tenant assets, net of repayments	316	997
Investment in unconsolidated Real Estate Ventures	(261)	(4,910)
Deposits for real estate	(162)	268
Capital distributions from Real Estate Ventures	1,951	8,306
Leasing costs paid	(3,120)	(4,129)
Net cash (used in) provided by investing activities	(6,171)	63,852
Cash flows from financing activities:
Repayments of mortgage notes payable	(1,317)	(1,215)
Proceeds from the issuance of common shares	416	0
Shares used for employee taxes upon vesting of share awards	(942)	(129)
Partner contributions to consolidated real estate venture	15	29
Partner distributions from consolidated real estate venture	(54)	0
Distributions paid to shareholders	(32,173)	(29,815)
Distributions to noncontrolling interest	(266)	(237)
Net cash used in financing activities	(34,321)	(31,367)
Increase (decrease) in cash and cash equivalents and restricted cash	(1,794)	73,044
Cash and cash equivalents and restricted cash at beginning of year	203,442	194,618
Cash and cash equivalents and restricted cash at end of period	201,648	267,662
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the three months ended March 31, 2018 and 2017 of $687 and $1,709, respectively	12,705	11,268
Cash paid for income taxes	7	0
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	32,502	30,047
Change in investment in real estate ventures as a result of dispositions	(17,313)	(12,549)
Change in operating real estate related to a non-cash acquisition of an operating property	(20,653)	0
Change in intangible assets, net related to non-cash acquisition of an operating property	(3,144)	0
Change in acquired lease intangibles, net related to non-cash acquisition of an operating property	182	0
Change in investments in joint venture related to non-cash acquisition of property	(2,042)	0
Change in mortgage notes payable related to acquisition of an operating property	9,940	0
Change in capital expenditures financed through accounts payable at period end	(1,112)	1,273
Change in capital expenditures financed through retention payable at period end	(792)	(199)
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Cash flows from operating activities:
Net income	44,705	21,271
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	43,291	45,892
Amortization of deferred financing costs	627	634
Amortization of debt discount/(premium), net	176	362
Amortization of stock compensation costs	3,265	3,124
Straight-line rent income	(4,978)	(5,895)
Amortization of acquired above (below) market leases, net	(793)	(1,338)
Straight-line ground rent expense	22	22
Provision for doubtful accounts	467	707
Net gain on real estate venture transactions	(37,263)	(14,582)
Net gain on sale of interests in real estate	(22)	(7,323)
Provision for impairment	0	2,730
Income from Real Estate Ventures, net of distributions	2,209	748
Income tax provision	138	100
Changes in assets and liabilities:
Accounts receivable	(646)	(917)
Other assets	(12,911)	(10,626)
Accounts payable and accrued expenses	(1,146)	9,089
Deferred income, gains and rent	2,295	(3,333)
Other liabilities	(738)	(106)
Net cash provided by operating activities	38,698	40,559
Cash flows from investing activities:
Acquisition of properties	(24,946)	0
Proceeds from the sale of properties	14,921	74,159
Proceeds from real estate venture sales	42,953	27,230
Proceeds from repayment of mortgage notes receivable	562	0
Capital expenditures for tenant improvements	(16,569)	(11,408)
Capital expenditures for redevelopments	(2,429)	(5,505)
Capital expenditures for developments	(19,387)	(21,156)
Advances for the purchase of tenant assets, net of repayments	316	997
Investment in unconsolidated Real Estate Ventures	(261)	(4,910)
Deposits for real estate	(162)	268
Capital distributions from Real Estate Ventures	1,951	8,306
Leasing costs paid	(3,120)	(4,129)
Net cash (used in) provided by investing activities	(6,171)	63,852
Cash flows from financing activities:
Repayments of mortgage notes payable	(1,317)	(1,215)
Proceeds from the issuance of common shares	416	0
Shares used for employee taxes upon vesting of share awards	(942)	(129)
Partner contributions to consolidated real estate venture	15	29
Partner distributions from consolidated real estate venture	(54)	0
Distributions paid to shareholders	(32,439)	(30,052)
Net cash used in financing activities	(34,321)	(31,367)
Increase (decrease) in cash and cash equivalents and restricted cash	(1,794)	73,044
Cash and cash equivalents and restricted cash at beginning of year	203,442	193,919
Cash and cash equivalents and restricted cash at end of period	201,648	266,963
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the three months ended March 31, 2018 and 2017 of $687 and $1,709, respectively	12,705	11,268
Cash paid for income taxes	7	0
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	32,502	30,047
Change in investment in real estate ventures as a result of dispositions	(17,313)	(12,549)
Change in operating real estate related to a non-cash acquisition of an operating property	(20,653)	0
Change in intangible assets, net related to non-cash acquisition of an operating property	(3,144)	0
Change in acquired lease intangibles, net related to non-cash acquisition of an operating property	182	0
Change in investments in joint venture related to non-cash acquisition of property	(2,042)	0
Change in mortgage notes payable related to acquisition of an operating property	9,940	0
Change in capital expenditures financed through accounts payable at period end	(1,112)	1,273
Change in capital expenditures financed through retention payable at period end	$ (792)	$ (199)