Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash Flows from Operating Activities:
Net income	$ 9,397	$ 14,655
Operating distributions received from unconsolidated joint ventures	266	463
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	33,727	29,684
Amortization of deferred financing costs	774	594
Settlement of forward starting interest rate swaps	14,960	0
Other amortization	14,346	8,964
Impairment loss on real estate assets	0	6,402
Stock compensation expense	636	594
Equity in loss/(income) of unconsolidated joint ventures	266	(395)
Loss on sale of real estate assets, net	106	0
Changes in assets and liabilities:
Increase in tenant and straight-line rent receivables, net	(1,371)	(9,685)
Decrease in restricted cash and escrows	43	9
Increase in prepaid expenses and other assets	(3,467)	(171)
Decrease in accounts payable and accrued expenses	(350)	(11,122)
Increase in deferred income	720	2,033
Net cash provided by operating activities	70,053	42,025
Cash Flows from Investing Activities:
Acquisition of real estate assets and related intangibles	(400)	(247,499)
Capitalized expenditures, net of accruals	(27,187)	(34,114)
Net sales proceeds from wholly-owned properties	22,322	3,403
Investments in unconsolidated joint ventures	0	(672)
Deferred lease costs paid	(4,180)	(7,897)
Net cash used in investing activities	(9,445)	(286,779)
Cash Flows from Financing Activities:
Deferred financing costs paid	(454)	(47)
Proceeds from debt	764,564	294,000
Repayments of debt	(737,000)	(11,000)
Repurchases of common stock as part of announced plan	(54,515)	(11)
Dividends paid and discount on dividend reinvestments	(30,905)	(33,570)
Net cash (used in)/provided by financing activities	(58,310)	249,372
Net increase in cash and cash equivalents	2,298	4,618
Cash and cash equivalents, beginning of period	6,973	12,957
Cash and cash equivalents, end of period	9,271	17,575
Supplemental Disclosures of Significant Noncash Investing and Financing Activities:
Change in accrued share repurchases as part of an announced plan	(1,836)	0
Accrued capital expenditures and deferred lease costs	13,721	30,994
Accrued deferred financing costs	$ 176	$ 0