CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash Flows from Operating Activities:
Net income	$ 229,256	$ 130,291	$ 133,549
Operating distributions received from unconsolidated joint ventures	0	10	11
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	106,015	107,956	119,288
Amortization of debt issuance costs net of favorable settlement of interest rate swaps	87	(250)	1,588
Other amortization	71,609	58,330	73,944
Impairment loss on real estate assets	8,953	0	46,461
Loss on extinguishment of debt	0	1,665	0
Stock compensation expense	15,446	9,737	9,196
Equity in income of unconsolidated joint ventures	0	0	(3,845)
Gain on sale of real estate assets	(197,010)	(75,691)	(115,874)
Changes in assets and liabilities:
Increase in tenant and straight-line rent receivables	(15,706)	(16,094)	(21,392)
Decrease/(increase) in prepaid expenses and other assets	309	(3,095)	384
Decrease in accounts payable and accrued expenses	(11,251)	(9,092)	(1,521)
Increase/(decrease) in deferred income	776	(898)	1,016
Net cash provided by operating activities	208,484	202,869	242,805
Cash Flows from Investing Activities:
Acquisition of real estate assets and intangibles	(326,200)	(151,914)	(35,262)
Capitalized expenditures	(103,553)	(72,105)	(79,831)
Net sale proceeds from wholly-owned properties	589,767	575,227	375,518
Net sale proceeds received from unconsolidated joint ventures	0	0	12,334
Investments in unconsolidated joint ventures	0	0	(1,162)
Note receivable issuance	0	(3,200)	0
Note receivable payment	0	3,200	0
Deferred lease costs paid	(25,639)	(27,430)	(30,985)
Net cash provided by/(used in) investing activities	134,375	323,778	240,612
Cash Flows from Financing Activities:
Debt issuance and other costs paid	(151)	(1,040)	(132)
Proceeds from debt	592,000	977,062	180,000
Repayments of debt	(798,019)	(1,020,455)	(476,401)
Costs of issuance of common stock	(710)	(85)	(182)
Value of shares withheld for payment of taxes related to employee stock compensation	(3,295)	(2,219)	(3,403)
Repurchases of common stock as part of announced plan	(16,899)	(298,538)	(60,474)
Dividends paid and discount on dividend reinvestments	(106,433)	(184,093)	(122,274)
Net cash used in financing activities	(333,507)	(529,368)	(482,866)
Net increase/(decrease) in cash, cash equivalents, and restricted cash and escrows	9,352	(2,721)	551
Cash, cash equivalents, and restricted cash and escrows, beginning of year	6,034	8,755	8,204
Cash, cash equivalents, and restricted cash and escrows, end of year	$ 15,386	$ 6,034	$ 8,755