Regency Centers 10-Q 4 Nov 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Oct. 30, 2014
Entity Registrant Name	'REGENCY CENTERS CORP	'
Entity Central Index Key	'0000910606	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-14	'
Amendment Flag	'false	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Entity Well-known Seasoned Issuer	'Yes	'
Entity Voluntary Filers	'No	'
Entity Current Reporting Status	'Yes	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	93,243,831
Partnership Interest [Member]	'	'
Entity Registrant Name	'REGENCY CENTERS LP	'
Entity Central Index Key	'0001066247	'
Entity Filer Category	'Accelerated Filer	'

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Parent Company [Member]	Parent Company [Member]	Partnership Interest [Member]	Partnership Interest [Member]
Real estate investments at cost:	'	'	'	'
Land	$1,323,452	$1,249,779	$1,323,452	$1,249,779
Buildings and improvements	2,703,109	2,590,302	2,703,109	2,590,302
Properties in development	273,710	186,450	273,710	186,450
Gross real estate investments at cost	4,300,271	4,026,531	4,300,271	4,026,531
Less: accumulated depreciation	909,572	844,873	909,572	844,873
Total Cost Net of Accumulated Depreciation	3,390,699	3,181,658	3,390,699	3,181,658
Real Estate Held-for-sale	12,203	0	12,203	0
Investments in real estate partnerships	328,398	358,849	328,398	358,849
Net real estate investments	3,731,300	3,540,507	3,731,300	3,540,507
Cash and cash equivalents	100,708	80,684	100,708	80,684
Restricted cash	9,339	9,520	9,339	9,520
Accounts receivable, net of allowance for doubtful accounts of $4,543 and $3,922 at September 30, 2014 and December 31, 2013, respectively	25,719	26,319	25,719	26,319
Straight-line rent receivable, net of reserve of $509 and $547 at September 30, 2014 and December 31, 2013, respectively	54,947	50,612	54,947	50,612
Notes receivable	12,132	11,960	12,132	11,960
Deferred costs, less accumulated amortization of $79,504 and $73,231 at September 30, 2014 and December 31, 2013, respectively	72,559	69,963	72,559	69,963
Acquired lease intangible assets, less accumulated amortization of $35,505 and $25,591 at September 30, 2014 and December 31, 2013, respectively	52,240	44,805	52,240	44,805
Trading securities held in trust, at fair value	27,365	26,681	27,365	26,681
Other assets (note 5)	41,779	52,465	41,779	52,465
Total assets	4,128,088	3,913,516	4,128,088	3,913,516
Liabilities:	'	'	'	'
Notes payable	1,948,243	1,779,697	1,948,243	1,779,697
Unsecured credit facilities	75,000	75,000	75,000	75,000
Accounts payable and other liabilities	173,997	147,045	173,997	147,045
Acquired lease intangible liabilities, less accumulated accretion of $13,013 and $10,102 at September 30, 2014 and December 31, 2013, respectively	31,831	26,729	31,831	26,729
Tenants’ security and escrow deposits and prepaid rent	24,888	23,911	24,888	23,911
Total liabilities	2,253,959	2,052,382	2,253,959	2,052,382
Commitments and contingencies (note 13)	'	'	'	'
Stockholders’ equity/Partners' capital:	'	'	'	'
Preferred stock, $0.01 par value per share, 30,000,000 shares authorized; 13,000,000 Series 6 and 7 shares issued and outstanding at September 30, 2014 and December 31, 2013, with liquidation preferences of $25 per share	325,000	325,000	'	'
Common stock, $0.01 par value per share,150,000,000 shares authorized; 93,243,593 and 92,333,161 shares issued at September 30, 2014 and December 31, 2013, respectively	932	923	'	'
Treasury stock at cost, 421,758 and 373,042 shares held at September 30, 2014 and December 31, 2013, respectively	-19,167	-16,726	'	'
Additional paid in capital	2,484,460	2,426,477	'	'
Preferred units of general partner, $0.01 par value per unit, 13,000,000 units issued and outstanding at September 30, 2014 and December 31, 2013, liquidation preference of $25 per unit	'	'	325,000	325,000
General partner; 93,243,593 and 92,333,161 units outstanding at September 30, 2014 and December 31, 2013, respectively	'	'	1,554,184	1,535,758
Limited partners; 154,170 and 165,796 units outstanding at September 30, 2014 and December 31, 2013	'	'	-1,935	-1,426
Accumulated other comprehensive loss	-33,963	-17,404	-33,963	-17,404
Distributions in excess of net income	-912,041	-874,916	'	'
Total stockholders’ equity	1,845,221	1,843,354	'	'
Total partners’ capital	'	'	1,843,286	1,841,928
Noncontrolling interests:	'	'	'	'
Exchangeable operating partnership units, aggregate redemption value of $8,299 and $7,676 at September 30, 2014 and December 31, 2013, respectively	-1,935	-1,426	'	'
Limited partners’ interests in consolidated partnerships	30,843	19,206	30,843	19,206
Total noncontrolling interests	28,908	17,780	30,843	19,206
Total equity/capital	1,874,129	1,861,134	1,874,129	1,861,134
Total liabilities and equity/capital	$4,128,088	$3,913,516	$4,128,088	$3,913,516

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Parent Company [Member]	'	'
Allowance for doubtful accounts receivable	$4,543	$3,922
Straight-line rent receivable allowance	509	547
Deferred costs accumulated amortization	79,504	73,231
Accumulated amortization of acquired lease intangible assets	35,505	25,591
Accumulated accretion of acquired lease intangible liabilities	13,013	10,102
Preferred stock, par value per share	$0.01	$0.01
Preferred stock, shares authorized	30,000,000	30,000,000
Preferred units of Series 6-7, units issued	13,000,000	13,000,000
Preferred units of Series 6-7, units outstanding	13,000,000	13,000,000
Preferred stock, liquidation preferences per share	$25	$25
Common stock, par value per share	$0.01	$0.01
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	93,243,593	92,333,161
Exchangeable operating partnership units aggregate redemption value	8,299	7,676
Treasury stock, shares held at cost	421,758	373,042
Partnership Interest [Member]	'	'
Allowance for doubtful accounts receivable	4,543	3,922
Straight-line rent receivable allowance	509	547
Deferred costs accumulated amortization	79,504	73,231
Accumulated amortization of acquired lease intangible assets	35,505	25,591
Accumulated accretion of acquired lease intangible liabilities	$13,013	$10,102
Preferred units of general partner par value per unit	$0.01	$0.01
Preferred units of Series 6-7, units issued	13,000,000	13,000,000
Preferred units of Series 6-7, units outstanding	13,000,000	13,000,000
Preferred stock, liquidation preferences per share	$25	$25
General partner units, outstanding	93,243,593	92,333,161
Limited partner units, outstanding	154,170	165,796

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Document Fiscal Year Focus	'	'	'2014	'
Other expense (income):	'	'	'	'
Income Tax Expense (Benefit)	$1,180	$0	$1,546	$0
Discontinued operations, net:	'	'	'	'
Gain on sale of real estate, net of tax	-27,558	-16,108	-29,598	-29,235
Parent Company [Member]	'	'	'	'
Revenues:	'	'	'	'
Minimum rent	98,620	88,784	290,935	261,935
Percentage rent	371	415	2,301	2,257
Recoveries from tenants and other income	28,787	25,425	90,144	79,615
Management, transaction, and other fees	5,781	5,694	18,353	19,195
Total revenues	133,559	120,318	401,733	363,002
Operating expenses:	'	'	'	'
Depreciation and amortization	36,417	32,740	110,345	94,938
Operating and maintenance	18,149	16,778	58,152	51,400
General and administrative	14,463	15,001	43,883	47,942
Real estate taxes	14,832	13,351	44,529	40,332
Other operating expenses	2,062	907	5,665	4,005
Total operating expenses	85,923	78,777	262,574	238,617
Other expense (income):	'	'	'	'
Interest expense, net of interest income of $221 and $350, and $901 and $1,101 for the three and nine months ended September 30, 2014 and 2013, respectively	27,561	26,750	82,141	82,363
Provision for impairment	0	6,000	225	6,000
Net investment (income) loss, including unrealized losses (gains) of $472 and ($875), and $289 and ($1,724) for the three and nine months ended September 30, 2014 and 2013, respectively	-94	-963	-915	-1,998
Total other expense	27,467	31,787	81,451	86,365
Income from continuing operations before equity in income of investments in real estate partnerships and income taxes	20,169	9,754	57,708	38,020
Equity in income of investments in real estate partnerships	5,713	13,262	22,353	25,150
Income from continuing operations	25,882	23,016	80,061	63,170
Discontinued operations, net:	'	'	'	'
Operating income	0	1,540	0	6,863
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	0	16,052	0	27,462
Income from discontinued operations	0	17,592	0	34,325
Gain on sale of real estate, net of tax	-27,558	-56	-29,598	-1,773
Net income	53,440	40,664	109,659	99,268
Noncontrolling interests:	'	'	'	'
Exchangeable operating partnership units	-90	-73	-185	-183
Limited partners’ interests in consolidated partnerships	-142	-327	-863	-872
Income attributable to noncontrolling interests	-232	-400	-1,048	-1,055
Net income attributable to the Company	53,208	40,264	108,611	98,213
Preferred stock dividends	-5,266	-5,266	-15,797	-15,797
Net income attributable to common stockholders	47,942	34,998	92,814	82,416
Income per common share/unit - basic:	'	'	'	'
Continuing operations (in dollars per share)	$0.52	$0.19	$1	$0.52
Discontinued operations (in dollars per share)	$0	$0.19	$0	$0.38
Net income attributable to common stockholders (in dollars per share)	$0.52	$0.38	$1	$0.90
Income per common share/unit - diluted:	'	'	'	'
Continuing operations (in dollars per share)	$0.52	$0.19	$1	$0.52
Discontinued operations (in dollars per share)	$0	$0.19	$0	$0.38
Net income attributable to common stockholders (in dollars per share)	$0.52	$0.38	$1	$0.90
Partnership Interest [Member]	'	'	'	'
Revenues:	'	'	'	'
Minimum rent	98,620	88,784	290,935	261,935
Percentage rent	371	415	2,301	2,257
Recoveries from tenants and other income	28,787	25,425	90,144	79,615
Management, transaction, and other fees	5,781	5,694	18,353	19,195
Total revenues	133,559	120,318	401,733	363,002
Operating expenses:	'	'	'	'
Depreciation and amortization	36,417	32,740	110,345	94,938
Operating and maintenance	18,149	16,778	58,152	51,400
General and administrative	14,463	15,001	43,883	47,942
Real estate taxes	14,832	13,351	44,529	40,332
Other operating expenses	2,062	907	5,665	4,005
Total operating expenses	85,923	78,777	262,574	238,617
Other expense (income):	'	'	'	'
Interest expense, net of interest income of $221 and $350, and $901 and $1,101 for the three and nine months ended September 30, 2014 and 2013, respectively	27,561	26,750	82,141	82,363
Provision for impairment	0	6,000	225	6,000
Net investment (income) loss, including unrealized losses (gains) of $472 and ($875), and $289 and ($1,724) for the three and nine months ended September 30, 2014 and 2013, respectively	-94	-963	-915	-1,998
Total other expense	27,467	31,787	81,451	86,365
Income from continuing operations before equity in income of investments in real estate partnerships and income taxes	20,169	9,754	57,708	38,020
Equity in income of investments in real estate partnerships	5,713	13,262	22,353	25,150
Income from continuing operations	25,882	23,016	80,061	63,170
Discontinued operations, net:	'	'	'	'
Operating income	0	1,540	0	6,863
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	0	16,052	0	27,462
Income from discontinued operations	0	17,592	0	34,325
Gain on sale of real estate, net of tax	-27,558	-56	-29,598	-1,773
Net income	53,440	40,664	109,659	99,268
Noncontrolling interests:	'	'	'	'
Limited partners’ interests in consolidated partnerships	-142	-327	-863	-872
Income attributable to noncontrolling interests	-142	-327	-863	-872
Net income attributable to the Company	53,298	40,337	108,796	98,396
Preferred unit distributions	-5,266	-5,266	-15,797	-15,797
Net income attributable to common unit holders	$48,032	$35,071	$92,999	$82,599
Income per common share/unit - basic:	'	'	'	'
Continuing operations (in dollars per share)	$0.52	$0.19	$1	$0.52
Discontinued operations (in dollars per share)	$0	$0.19	$0	$0.38
Net income attributable to common unit holders (in dollars per share)	$0.52	$0.38	$1	$0.90
Income per common share/unit - diluted:	'	'	'	'
Continuing operations (in dollars per share)	$0.52	$0.19	$1	$0.52
Discontinued operations (in dollars per share)	$0	$0.19	$0	$0.38
Net income attributable to common unit holders (in dollars per share)	$0.52	$0.38	$1	$0.90

Consolidated_Statements_of_Ope1

Consolidated Statements of Operations (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Parent Company [Member]	'	'	'	'
Interest income	$221	$350	$901	$1,101
Unrealized Gain on Securities	472	-875	289	-1,724
Partnership Interest [Member]	'	'	'	'
Interest income	221	350	901	1,101
Unrealized Gain on Securities	$472	($875)	$289	($1,724)

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Document Fiscal Year Focus	'	'	'2014	'
Other comprehensive income (loss):	'	'	'	'
Effective portion of change in fair value of derivative instruments	($3,651)	$521	($28,603)	$22,225
Parent Company [Member]	'	'	'	'
Net income	-53,440	-40,664	-109,659	-99,268
Other comprehensive income (loss):	'	'	'	'
Amortization of net loss on settled derivative instruments recognized in net income	2,107	2,367	6,639	7,099
Effective portion of change in fair value of derivative instruments	-3,651	521	-28,603	22,225
Less: reclassification adjustment for change in fair value of derivative instruments included in net income	153	8	459	24
Available-for-sale Securities, Gross Unrealized Gain	3,895	0	4,809	0
Other comprehensive (loss) income	2,504	2,896	-16,696	29,348
Comprehensive income	55,944	43,560	92,963	128,616
Less: comprehensive income (loss) attributable to noncontrolling interests:	'	'	'	'
Net income attributable to noncontrolling interests	-232	-400	-1,048	-1,055
Other comprehensive income (loss) attributable to noncontrolling interests	56	6	-137	63
Comprehensive income attributable to noncontrolling interests	288	406	911	1,118
Comprehensive income attributable to the Company	55,656	43,154	92,052	127,498
Partnership Interest [Member]	'	'	'	'
Net income	-53,440	-40,664	-109,659	-99,268
Other comprehensive income (loss):	'	'	'	'
Amortization of net loss on settled derivative instruments recognized in net income	2,107	2,367	6,639	7,099
Effective portion of change in fair value of derivative instruments	-3,651	521	-28,603	22,225
Less: reclassification adjustment for change in fair value of derivative instruments included in net income	153	8	459	24
Available-for-sale Securities, Gross Unrealized Gain	3,895	0	4,809	0
Other comprehensive (loss) income	2,504	2,896	-16,696	29,348
Comprehensive income	55,944	43,560	92,963	128,616
Less: comprehensive income (loss) attributable to noncontrolling interests:	'	'	'	'
Net income attributable to noncontrolling interests	-142	-327	-863	-872
Other comprehensive income (loss) attributable to noncontrolling interests	52	1	-108	8
Comprehensive income attributable to noncontrolling interests	194	328	755	880
Comprehensive income attributable to the Company	$55,750	$43,232	$92,208	$127,736

Consolidated_Statement_of_Chan

Consolidated Statement of Changes in Equity (USD $)

Parent Company [Member]

Partnership Interest [Member]

Preferred Stock [Member]

Common Stock [Member]

Treasury Stock [Member]

Additional Paid-in Capital [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Distributions in Excess of Net Income [Member]

Total Stockholders' Equity [Member]

Noncontrolling Interest Exchangeable Operating Partnership Units [Member]

Noncontrolling Interests in Limited Partners' Interest in Consolidated Partnerships [Member]

Noncontrolling Interests in Limited Partners' Interest in Consolidated Partnerships [Member]

Total Noncontrolling Interests [Member]

General Partner Preferred and Common Units [Member]

Limited Partners [Member]

Total Partners' Capital [Member]

Preferred Units [Member]

Preferred Units [Member]

Preferred Units [Member]

Preferred Units [Member]

Preferred Units [Member]

Preferred Units [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

In Thousands, unless otherwise specified

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Partnership Interest [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Partnership Interest [Member]

Parent Company [Member]

Partnership Interest [Member]

Partnership Interest [Member]

Partnership Interest [Member]

Partnership Interest [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Noncontrolling Interests in Limited Partners' Interest in Consolidated Partnerships [Member]

General Partner Preferred and Common Units [Member]

Limited Partners [Member]

Total Partners' Capital [Member]

Parent Company [Member]

Preferred Stock [Member]

Parent Company [Member]

Treasury Stock [Member]

Additional Paid-in Capital [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Distributions in Excess of Net Income [Member]

Total Stockholders' Equity [Member]

Noncontrolling Interest Exchangeable Operating Partnership Units [Member]

Noncontrolling Interests in Limited Partners' Interest in Consolidated Partnerships [Member]

Total Noncontrolling Interests [Member]

Partnership Interest [Member]

Partnership Interest [Member]

Partnership Interest [Member]

Partnership Interest [Member]

Partnership Interest [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Beginning balance at Dec. 31, 2012

$1,745,911

$1,745,911

$325,000

$904

($14,924)

$2,312,310

'

($57,715)

($57,715)

($834,810)

$1,730,765

($1,153)

$16,299

$16,299

$15,146

$1,788,480

($1,153)

$1,729,612

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Increase (Decrease) in Stockholders' Equity [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income

99,268

99,268

0

0

0

0

'

0

0

'

98,213

183

872

872

1,055

98,213

183

98,396

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net Income (Loss) Attributable to Parent

98,213

98,396

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current period other comprehensive income, net

29,348

29,348

0

0

0

0

29,285

29,285

29,285

0

29,285

55

8

'

'

0

55

29,340

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other comprehensive income (loss) attributable to noncontrolling interests

63

8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Adjustments to Additional Paid in Capital, Share-based Compensation, Other Long-term Incentive Plans, Requisite Service Period Recognition

0

'

0

0

-1,616

1,616

'

0

'

0

0

0

0

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization of restricted stock issued

10,600

10,600

0

0

0

10,600

'

0

0

0

10,600

0

0

0

0

10,600

0

10,600

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock redeemed for taxes withheld for stock based compensation, net

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,927

0

0

0

2,927

0

0

2,927

0

0

0

Common stock issued for dividend reinvestment plan

831

831

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

831

0

0

831

0

0

0

Stock Issued During Period, Value, Conversion of Units

302

302

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

0

302

0

0

302

-302

0

-302

Common stock issued for stock offerings, net of issuance costs

'

'

0

19

0

99,734

'

0

'

0

99,753

0

0

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred unit distributions

'

-15,797

'

'

'

'

'

'

0

'

'

'

'

0

'

-15,797

0

-15,797

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contributions from partners

347

347

0

0

0

0

'

0

0

0

0

0

347

347

347

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Distributions to partners

-3,635

-130,239

0

0

0

0

'

0

0

0

0

0

-3,635

-3,635

-3,635

-126,359

-245

-126,604

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred Stock Redemption Premium

'

0

'

'

'

'

'

'

0

'

'

'

'

0

'

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common units issued as a result of common stock issued by Parent Company, net of repurchases

'

97,657

'

'

'

'

'

'

0

'

'

'

'

0

'

97,657

0

97,657

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash dividends declared: preferred stock/unit

15,797

'

0

0

0

0

'

0

'

15,797

15,797

0

0

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred Stock Dividends, Income Statement Impact

15,797

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash dividends declared - common stock/unit

126,604

'

0

0

0

0

'

0

'

126,359

126,359

245

0

'

245

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common units exchanged for common stock of the parent company

'

0

'

'

'

'

'

'

0

'

'

'

'

0

'

302

-302

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Ending Balance at Sep. 30, 2013

1,837,095

1,837,095

325,000

923

-16,540

2,422,466

'

-28,430

-28,430

-878,753

1,824,666

-1,462

13,891

13,891

12,429

1,853,096

-1,462

1,823,204

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Beginning balance at Jun. 30, 2013

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Increase (Decrease) in Stockholders' Equity [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income

40,664

40,664

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net Income (Loss) Attributable to Parent

40,264

40,337

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current period other comprehensive income, net

2,896

2,896

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other comprehensive income (loss) attributable to noncontrolling interests

6

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred Stock Dividends, Income Statement Impact

5,266

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Ending Balance at Sep. 30, 2013

1,837,095

1,837,095

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Beginning balance at Dec. 31, 2013

1,861,134

1,861,134

325,000

923

-16,726

2,426,477

'

-17,404

-17,404

-874,916

1,843,354

-1,426

19,206

19,206

17,780

1,860,758

-1,426

1,841,928

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Increase (Decrease) in Stockholders' Equity [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income

109,659

109,659

0

0

0

0

'

0

0

'

108,611

185

863

863

1,048

108,611

185

108,796

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net Income (Loss) Attributable to Parent

108,611

108,796

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current period other comprehensive income, net

-16,696

-16,696

0

0

0

0

-16,559

-16,559

-16,559

0

-16,559

-29

-108

'

'

0

-29

-16,588

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other comprehensive income (loss) attributable to noncontrolling interests

-137

-108

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Adjustments to Additional Paid in Capital, Share-based Compensation, Other Long-term Incentive Plans, Requisite Service Period Recognition

0

'

0

0

-2,441

2,441

'

0

'

0

0

0

0

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization of restricted stock issued

8,747

8,747

0

0

0

8,747

'

0

0

0

8,747

0

0

0

0

8,747

0

8,747

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock redeemed for taxes withheld for stock based compensation, net

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,528

0

0

0

3,528

0

0

3,528

0

0

0

Common stock issued for dividend reinvestment plan

895

895

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

895

0

0

895

0

0

0

Stock Issued During Period, Value, Conversion of Units

137

137

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

0

137

0

0

137

-137

0

-137

Common stock issued for stock offerings, net of issuance costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-49,300

0

9

0

49,291

0

0

49,300

0

0

0

Preferred unit distributions

'

-15,797

'

'

'

'

'

'

0

'

'

'

'

0

'

-15,797

0

-15,797

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contributions from partners

15,933

15,933

0

0

0

0

'

0

0

0

0

0

15,933

15,933

15,933

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Distributions to partners

-5,051

-135,218

0

0

0

0

'

0

0

0

0

0

-5,051

-5,051

-5,051

-129,939

-228

-130,167

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred Stock Redemption Premium

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-300

0

0

0

-300

-300

'

'

'

'

'

'

'

'

'

'

'

Common units issued as a result of common stock issued by Parent Company, net of repurchases

'

46,667

'

'

'

'

'

'

0

'

'

'

'

0

'

46,667

0

46,667

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Redemption of partnership units

300

'

0

0

0

0

'

0

'

0

0

300

0

'

300

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash dividends declared: preferred stock/unit

15,797

'

0

0

0

0

'

0

'

'

15,797

0

0

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred Stock Dividends, Income Statement Impact

15,797

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash dividends declared - common stock/unit

130,167

'

0

0

0

0

'

0

'

129,939

129,939

228

0

'

228

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common units exchanged for common stock of the parent company

'

0

'

'

'

'

'

'

0

'

'

'

'

0

'

137

-137

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Ending Balance at Sep. 30, 2014

1,874,129

1,874,129

325,000

932

-19,167

2,484,460

'

-33,963

-33,963

-912,041

1,845,221

-1,935

30,843

30,843

28,908

1,879,184

-1,935

1,843,286

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Beginning balance at Jun. 30, 2014

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Increase (Decrease) in Stockholders' Equity [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income

53,440

53,440

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net Income (Loss) Attributable to Parent

53,208

53,298

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current period other comprehensive income, net

2,504

2,504

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other comprehensive income (loss) attributable to noncontrolling interests

56

52

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred Stock Dividends, Income Statement Impact

5,266

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Ending Balance at Sep. 30, 2014

$1,874,129

$1,874,129

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Consolidated_Statement_of_Chan1

Consolidated Statement of Changes in Equity (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Common stock/unit per share	$1.41	$1.39

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	9 Months Ended
Share data in Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Document Fiscal Year Focus	'2014	'
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Stock-based compensation, net of capitalization	$6,885,000	$9,227,000
Cash flows from financing activities:	'	'
Net proceeds from common stock issuance	49,995,000	101,342,000
Parent Company [Member]	'	'
Incremental Common Shares Attributable to Dilutive Effect of Equity Forward Agreements	0	0
Noncash or Part Noncash Acquisition, Other Assets Acquired	0	7,646,000
Proceeds from Issuance of Unsecured Debt	248,705,000	0
Cash flows from operating activities:	'	'
Net income	109,659,000	99,268,000
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	110,355,000	98,620,000
Amortization of deferred loan cost and debt premium	8,095,000	9,265,000
Accretion of above and below market lease intangibles, net	-2,315,000	-1,646,000
Stock-based compensation, net of capitalization	6,885,000	9,227,000
Equity in income of investments in real estate partnerships	-22,353,000	-25,150,000
Net gain on sale of properties	-29,598,000	-29,235,000
Provision for impairment	-225,000	-6,000,000
Distribution of earnings from operations of investments in real estate partnerships	-30,008,000	-34,772,000
Loss on settlement of derivative instruments	-4,648,000	0
Hedge ineffectiveness	-13,000	-14,000
Deferred compensation expense	610,000	2,023,000
Realized and unrealized gains on trading securities held in trust	-612,000	-2,024,000
Changes in assets and liabilities:	'	'
Restricted cash	497,000	1,185,000
Accounts receivable	-2,801,000	-2,200,000
Straight-line rent receivables, net	-4,724,000	-3,850,000
Deferred leasing costs	-6,416,000	-6,599,000
Other assets	131,000	-1,767,000
Accounts payable and other liabilities	15,018,000	8,137,000
Tenants’ security and escrow deposits and prepaid rent	511,000	4,550,000
Net cash provided by operating activities	217,810,000	200,562,000
Cash flows from investing activities:	'	'
Acquisition of operating real estate	-98,018,000	-26,676,000
Development of real estate, including acquisition of land	-160,552,000	-162,419,000
Proceeds from sale of real estate investments	62,788,000	136,997,000
Collection of notes receivable	0	6,015,000
Investments in real estate partnerships	-6,012,000	-10,844,000
Distributions received from investments in real estate partnerships	29,916,000	31,457,000
Dividends on trading securities held in trust	100,000	95,000
Acquisition of securities	-19,866,000	-17,795,000
Proceeds from sale of securities	5,344,000	12,732,000
Net cash used in investing activities	-186,300,000	-30,438,000
Cash flows from financing activities:	'	'
Net proceeds from common stock issuance	49,300,000	99,753,000
Proceeds from sale of treasury stock	0	34,000
Redemption of preferred stock and partnership units	-300,000	0
Distributions to limited partners in consolidated partnerships, net	-4,619,000	-3,288,000
Distributions to exchangeable operating partnership unit holders	-228,000	-245,000
Dividends paid to common stockholders	-129,044,000	-125,528,000
Dividends paid to preferred stockholders	-15,797,000	-15,797,000
Proceeds from unsecured credit facilities	255,000,000	82,000,000
Repayment of unsecured credit facilities	-255,000,000	-152,000,000
Proceeds from notes payable	12,025,000	8,250,000
Repayments of Notes Payable	13,487,000	16,439,000
Scheduled principal payments	-5,068,000	-6,352,000
Payment of loan costs	-2,973,000	-159,000
Net cash used in financing activities	-11,486,000	-129,771,000
Repayments of Unsecured Debt	150,000,000	0
Net increase in cash and cash equivalents	20,024,000	40,353,000
Cash and cash equivalents at beginning of the period	80,684,000	22,349,000
Cash and cash equivalents at end of the period	100,708,000	62,702,000
Supplemental disclosure of cash flow information:	'	'
Cash paid for interest (net of capitalized interest of $ 5,158 and $4,174 in 2014 and 2013, respectively)	72,573,000	72,607,000
Supplemental disclosure of non-cash transactions:	'	'
Real estate received through distribution in kind	0	7,576,000
Mortgage loans assumed through distribution in kind	0	7,500,000
Mortgage loans assumed for the acquisition of real estate, net of premiums	78,049,000	0
Change in fair value of derivative instruments	-28,144,000	22,249,000
Common stock issued for dividend reinvestment plan	895,000	831,000
Stock-based compensation capitalized	2,026,000	1,567,000
Contributions from limited partners in consolidated partnerships, net	116,000	0
Common stock issued for dividend reinvestment in trust	581,000	489,000
Contribution of stock awards into trust	1,865,000	1,522,000
Distribution of stock held in trust	4,000	201,000
Available-for-sale Securities, Gross Unrealized Gain (Loss)	4,809,000	0
Partnership Interest [Member]	'	'
Noncash or Part Noncash Acquisition, Other Assets Acquired	0	7,646,000
Proceeds from Issuance of Unsecured Debt	248,705,000	0
Cash flows from operating activities:	'	'
Net income	109,659,000	99,268,000
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	110,355,000	98,620,000
Amortization of deferred loan cost and debt premium	8,095,000	9,265,000
Accretion of above and below market lease intangibles, net	-2,315,000	-1,646,000
Stock-based compensation, net of capitalization	6,885,000	9,227,000
Equity in income of investments in real estate partnerships	-22,353,000	-25,150,000
Net gain on sale of properties	-29,598,000	-29,235,000
Provision for impairment	-225,000	-6,000,000
Distribution of earnings from operations of investments in real estate partnerships	-30,008,000	-34,772,000
Loss on settlement of derivative instruments	-4,648,000	0
Hedge ineffectiveness	-13,000	-14,000
Deferred compensation expense	610,000	2,023,000
Realized and unrealized gains on trading securities held in trust	-612,000	-2,024,000
Changes in assets and liabilities:	'	'
Restricted cash	497,000	1,185,000
Accounts receivable	-2,801,000	-2,200,000
Straight-line rent receivables, net	-4,724,000	-3,850,000
Deferred leasing costs	-6,416,000	-6,599,000
Other assets	131,000	-1,767,000
Accounts payable and other liabilities	15,018,000	8,137,000
Tenants’ security and escrow deposits and prepaid rent	511,000	4,550,000
Net cash provided by operating activities	217,810,000	200,562,000
Cash flows from investing activities:	'	'
Acquisition of operating real estate	-98,018,000	-26,676,000
Development of real estate, including acquisition of land	-160,552,000	-162,419,000
Proceeds from sale of real estate investments	62,788,000	136,997,000
Collection of notes receivable	0	6,015,000
Investments in real estate partnerships	-6,012,000	-10,844,000
Distributions received from investments in real estate partnerships	29,916,000	31,457,000
Dividends on trading securities held in trust	100,000	95,000
Acquisition of securities	-19,866,000	-17,795,000
Proceeds from sale of securities	5,344,000	12,732,000
Net cash used in investing activities	-186,300,000	-30,438,000
Cash flows from financing activities:	'	'
Net proceeds from common units issued as a result of common stock issued by Parent Company	49,300,000	99,753,000
Proceeds from sale of treasury stock	0	34,000
Redemption of preferred stock and partnership units	-300,000	0
Distributions to limited partners in consolidated partnerships, net	-4,619,000	-3,288,000
Dividends paid to common stockholders	-129,272,000	-125,773,000
Dividends paid to preferred stockholders	-15,797,000	-15,797,000
Proceeds from unsecured credit facilities	255,000,000	82,000,000
Repayment of unsecured credit facilities	-255,000,000	-152,000,000
Proceeds from notes payable	12,025,000	8,250,000
Repayments of Notes Payable	13,487,000	16,439,000
Scheduled principal payments	-5,068,000	-6,352,000
Payment of loan costs	-2,973,000	-159,000
Net cash used in financing activities	-11,486,000	-129,771,000
Repayments of Unsecured Debt	150,000,000	0
Net increase in cash and cash equivalents	20,024,000	40,353,000
Cash and cash equivalents at beginning of the period	80,684,000	22,349,000
Cash and cash equivalents at end of the period	100,708,000	62,702,000
Supplemental disclosure of cash flow information:	'	'
Cash paid for interest (net of capitalized interest of $ 5,158 and $4,174 in 2014 and 2013, respectively)	72,573,000	72,607,000
Supplemental disclosure of non-cash transactions:	'	'
Real estate received through distribution in kind	0	7,576,000
Mortgage loans assumed through distribution in kind	0	7,500,000
Mortgage loans assumed for the acquisition of real estate, net of premiums	78,049,000	0
Change in fair value of derivative instruments	-28,144,000	22,249,000
Common stock issued for dividend reinvestment plan	895,000	831,000
Stock-based compensation capitalized	2,026,000	1,567,000
Contributions from limited partners in consolidated partnerships, net	116,000	0
Non-controlling interest recorded, fair value	'	0
Common stock issued for dividend reinvestment in trust	581,000	489,000
Contribution of stock awards into trust	1,865,000	1,522,000
Distribution of stock held in trust	4,000	201,000
Available-for-sale Securities, Gross Unrealized Gain (Loss)	$4,809,000	$0

Consolidated_Statements_of_Cas1

Consolidated Statements of Cash Flows (Parenthetical) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Parent Company [Member]	'	'
Capitalized interest	$5,158	$4,174
Partnership Interest [Member]	'	'
Capitalized interest	$5,158	$4,174

Organization_and_Principles_of

Organization and Principles of Consolidation	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Organization and Principles of Consolidation	'
	Organization and Principles of Consolidation
	General
	Regency Centers Corporation (the “Parent Company”) began its operations as a Real Estate Investment Trust (“REIT”) in 1993 and is the general partner of Regency Centers, L.P. (the “Operating Partnership”). The Parent Company currently owns approximately 99.8% of the outstanding common Partnership Units of the Operating Partnership. The Parent Company engages in the ownership, management, leasing, acquisition, and development of retail shopping centers through the Operating Partnership, and has no other assets or liabilities other than through its investment in the Operating Partnership. As of September 30, 2014, the Parent Company, the Operating Partnership and their controlled subsidiaries on a consolidated basis (the "Company” or “Regency”) directly owned 205 retail shopping centers and held partial interests in an additional 121 retail shopping centers through investments in real estate partnerships (also referred to as "joint ventures" or "co-investment partnerships").
	The financial statements reflect all adjustments which are, in the opinion of management, necessary to a fair statement of the results for the interim periods presented. These adjustments are considered to be of a normal recurring nature.
	Accounting Policies
	Securities
	The Company determines the appropriate classification of its investments in debt and equity securities at the time of purchase and reevaluates such determinations at each balance sheet date. Debt securities are classified as held to maturity when the Company has the positive intent and ability to hold the securities to maturity. Marketable securities that are bought and held principally for the purpose of selling them in the near term are classified as trading securities and are reported at fair value, with unrealized gains and losses recognized in earnings. Debt and marketable equity securities not classified as held to maturity or as trading, are classified as available-for-sale, and are carried at fair value, with the unrealized gains and losses, net of tax, included in the determination of comprehensive income and reported in the Consolidated Statements of Equity and Capital. The fair value of securities is determined using quoted market prices.
	Recent Accounting Pronouncements
	In July 2013, the FASB issued updated guidance that resolves the diversity in practice for the presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. This new accounting guidance requires the netting of unrecognized tax benefits against a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward that would apply in settlement of an uncertain tax position. The guidance was effective as of the first quarter of 2014 and its adoption did not have a material effect on the Company’s consolidated financial positions.
	On January 1, 2014, the Company prospectively adopted Financial Accounting Standards Board ("FASB") Accounting Standards Update ("ASU") No. 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, and all sales will be recorded in accordance with the ASU. The amendments in the ASU change the requirements for reporting discontinued operations. Under the new guidance, only disposals representing a strategic shift in operations should be presented as discontinued operations. Those strategic shifts should have a major effect on the organization's operations and financial results. In addition, the new guidance requires expanded disclosures about discontinued operations that will provide financial statement users with more information about the assets, liabilities, income, and expenses of discontinued operations.
	In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard is effective for the Company on January 1, 2017. Early adoption is not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its consolidated financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its ongoing financial reporting.

Real_Estate_Investments

Real Estate Investments	9 Months Ended
	Sep. 30, 2014
Business Combinations [Abstract]	'
Real Estate Investments	'
	Real Estate Investments
	The following tables detail the shopping centers acquired or land acquired for development (in thousands):
	Nine months ended September 30, 2014
	Date Purchased	Property Name	City/State	Property Type	Ownership	Purchase Price	Debt Assumed, Net of Premiums	Intangible Assets	Intangible Liabilities
	1/31/14	Persimmon Place	Dublin, CA	Development	100%	$14,200	—	—	—
	2/14/14	Shops at Mira Vista	Austin, TX	Operating	100%	22,500	319	2,329	291
	3/7/14	Fairfield Portfolio (1)	Fairfield, CT	Operating	80%	149,344	77,730	12,733	5,647
	6/2/14	Willow Oaks Crossing	Concord, NC	Development	100%	3,342	—	—	—
	7/15/14	Clybourn Commons	Chicago, IL	Operating	100%	19,000	—	1,686	3,298
	9/10/14	Belmont Chase	Ashburn, VA	Development	100%	4,300	—	—	—
	9/19/14	CityLine Market	Dallas, TX	Development	100%	4,913	—	—	—
	Total property acquisitions					$217,599	78,049	16,748	9,236
	Nine months ended September 30, 2013
	Date Purchased	Property Name	City/State	Property Type	Ownership	Purchase Price	Debt Assumed, Net of Premiums	Intangible Assets	Intangible Liabilities
	5/30/13	Preston Oaks	Dallas, TX	Operating	100%	$27,000	—	3,396	7,597
	7/23/13	Shoppes of Burnt Mills	Silver Springs, MD	Operating	20%	13,600	7,496	8,438	332
	Total property acquisitions					$40,600	$7,496	$11,834	$7,929
	(1) On March 7, 2014, the Company acquired an 80% controlling interest in the Fairfield Portfolio and paid $56.6 million for its pro-rata share of the acquisition, net of debt and other liabilities assumed. As a result of consolidation, the Company recorded the non-controlling interest of approximately $15.4 million at fair value. The portfolio consists of three operating properties located in Fairfield, CT.
	In addition, on March 20, 2013, the Company entered into a liquidation agreement with Macquarie Countrywide (US) No. 2, LLC ("CQR") to redeem its 24.95% interest through dissolution of the Macquarie CountryWide-Regency III, LLC (MCWR III) co-investment partnership through a distribution-in-kind ("DIK"). The assets of the partnership were distributed as 100% ownership interests to CQR and Regency after a selection process, as provided for by the agreement. Regency selected one asset, Hilltop Village, which was recorded at the carrying value of the Company's equity investment in MCWR III, net of deferred gain, on the date of dissolution of $7.6 million, including a $7.5 million mortgage assumed.
	The real estate operations acquired are not considered material to Company, individually or in the aggregate.

Property_Dispositions

Property Dispositions	9 Months Ended
	Sep. 30, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Property Dispositions	'
	As a result of adopting ASU No. 2014-08, there were no discontinued operations for the three and nine months ended September 30, 2014 as none of the current year sales represented a strategic shift that would qualify as discontinued operations. The following table provides a summary of revenues and expenses from properties included in discontinued operations during 2013 (in thousands):
			Three months ended September 30,			Nine months ended September 30,
				2013			2013
	Revenues	$		3,120	$		13,970
	Operating expenses			1,580			7,107
	Operating income from discontinued operations	$		1,540	$		6,863

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	4.    Income Taxes
	Income tax expense (benefit) is presented net of gains on sale of real estate in the accompanying Consolidated Statement of Operations. There was no income tax expense (benefit) for the three and nine months ended September 30, 2013. Income tax expense (benefit) was as follows for the three and nine months ended September 30, 2014 and 2013 (in thousands):
			Three months ended September 30,			Nine months ended September 30,
	Income tax expense (benefit) from:		2014	2013		2014	2013
	Continuing operations	$	1,180	—	$	1,546	—
	Total income tax expense	$	1,180	—	$	1,546	—

Notes_Payable_and_Unsecured_Cr

Notes Payable and Unsecured Credit Facilities	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Notes Payable and Unsecured Credit Facilities	'
	Notes Payable and Unsecured Credit Facilities
	The Company’s debt outstanding as of September 30, 2014 and December 31, 2013 consists of the following (in thousands):
			2014	2013
	Notes payable:
	Fixed rate mortgage loans	$	521,719	444,245
	Variable rate mortgage loans		29,125	37,100
	Fixed rate unsecured loans		1,397,399	1,298,352
	Total notes payable		1,948,243	1,779,697
	Unsecured credit facilities:
	Term Loan		75,000	75,000
	Total unsecured credit facilities		75,000	75,000
	Total debt outstanding	$	2,023,243	1,854,697
	Significant financing activity since December 31, 2013, excluding scheduled principal payments, includes:
	•	On February 14, 2014, the Company assumed debt of $319,000, net of premiums, related to the Shops at Mira Vista acquisition.
	•	On March 7, 2014, the Company assumed debt of $77.7 million, net of premiums, related to the Fairfield Portfolio acquisition.
	•	On April 15, 2014, the Company repaid $150.0 million of 4.95% ten-year unsecured public debt.
	•	On May 1, 2014, the Company repaid $6.6 million on a mortgage loan maturing in 2014.
	•	On May 26, 2014, the Company issued $250.0 million of 3.75% ten-year unsecured public debt, which matures on June 15, 2024.
	•	On June 27, 2014, the Company amended its existing senior unsecured term loan facility (the "Term Loan"). The amendment established a new Term Loan size of $165.0 million, extended the maturity date to June 27, 2019 and reduced the applicable interest rate. The Term Loan bears interest at LIBOR plus a ratings based margin of 1.15% per annum, subject to adjustment from time to time based on changes to the Company's corporate credit rating, and is subject to a fee of 0.2% per annum on the undrawn balance. Remaining deferred loan costs were expensed upon amending the Term Loan and new loan costs incurred were capitalized. The Company has $75.0 million outstanding and may elect to borrow up to an additional $90.0 million through August 31, 2015.
	•	During 2014, the Company drew approximately $1.0 million on a construction loan for the planned redevelopment of a center acquired in 2013.
	•	On July 1, 2014, the Company repaid $6.9 million on a mortgage loan maturing in 2015.
	•	On August 27, 2014, the Company encumbered a recently completed development property, owned in a consolidated joint venture, with a $10 million interest only mortgage loan at a fixed rate of 3.78%, maturing in September 2024.
	•	On September 30, 2014, the Company, through a consolidated joint venture, refinanced a maturing variable rate mortgage. The new mortgage of $10 million has a fixed rate of 3.41% and matures in October 2024, with principal and interest due monthly.
	As of September 30, 2014, scheduled principal payments and maturities on notes payable were as follows (in thousands):
	Scheduled Principal Payments and Maturities by Year:		Scheduled	Mortgage Loan	Unsecured		Total
			Principal	Maturities	Maturities (1)
			Payments
	2014	$	1,970	—	—		1,970
	2015		6,618	75,937	350,000		432,555
	2016		6,135	41,442	—		47,577
	2017		5,399	116,098	400,000		521,497
	2018		4,453	57,358	—		61,811
	Beyond 5 Years		26,091	201,324	725,000		952,415
	Unamortized debt premiums (discounts), net		—	8,019	(2,601	)	5,418
	Total	$	50,666	500,178	1,472,399		2,023,243
	(1) Includes unsecured public debt and unsecured credit facilities.
	The Company was in compliance as of September 30, 2014 with the financial and other covenants under its unsecured public debt and unsecured credit facilities.

Derivatives

Derivatives	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Financial Instruments	'
	Derivative Financial Instruments
	The following table summarizes the terms and fair values of the Company's derivative financial instruments, as well as their classification on the Consolidated Balance Sheets, as of September 30, 2014 and December 31, 2013 (in thousands):
													Fair Value
													Assets (3)						Liabilities (3)
	Effective Date		Maturity Date		Early Termination Date (1)		Notional Amount		Bank Pays Variable Rate of		Regency Pays Fixed Rate of		2014			2013			2014		2013
	10/1/11		9/1/14		N/A	$	9,000		1 Month LIBOR		0.76%	$	—			—		$	—		(34	)
	10/16/13		10/16/20		N/A		28,100		1 Month LIBOR		2.20%		—			82			(395	)	—
	4/15/14		4/15/24		10/15/14	(2)	35,000		3 Month LIBOR		2.87%		—			1,036			—		—
	4/15/14		4/15/24		10/15/14	(2)	60,000		3 Month LIBOR		2.86%		—			1,821			—		—
	4/15/14		4/15/24		10/15/14	(2)	75,000		3 Month LIBOR		2.09%		—			7,476			—		—
	4/15/14		4/15/24		10/15/14	(2)	50,000		3 Month LIBOR		2.09%		—			4,978			—		—
	8/1/15		8/1/25		2/1/16		75,000		3 Month LIBOR		2.48%		2,959			8,516			—		—
	8/1/15		8/1/25		2/1/16		50,000		3 Month LIBOR		2.48%		1,973			5,670			—		—
	8/1/15		8/1/25		2/1/16		50,000		3 Month LIBOR		2.48%		1,973			5,658			—		—
	8/1/15		8/1/25		2/1/16		45,000		3 Month LIBOR		3.41%		—			—			(1,929	)	—
	6/15/17		6/15/27		12/15/17		20,000		3 Month LIBOR		3.49%		—			—			(204	)	—
	6/15/17		6/15/27		12/15/17		100,000		3 Month LIBOR		3.48%		—			—			(973	)	—
	6/15/17		6/15/27		12/15/17		100,000		3 Month LIBOR		3.48%		—			—			(982	)	—
	Total derivative financial instruments											$	6,905			35,237			(4,483	)	(34	)
	(1) Represents the date specified in the agreement for either optional or mandatory early termination which will result in cash settlement.
	(2) The Company issued $250 million of 3.75%, fixed rate ten year unsecured bonds in May 2014. Prior to issuing the bonds, the Company locked in the ten year treasury rate using forward starting interest rate swaps to mitigate the risk of interest rates rising. In connection with the issuance of the new bonds, the Company terminated and settled these swaps, resulting in net cash proceeds of $4.6 million. These proceeds will offset bond interest expense over the life of the bonds, resulting in a lower effective interest rate of 3.59%.
	(3) Derivatives in an asset position are included within Other Assets in the accompanying Consolidated Balance Sheets, while those in a liability position are included within Accounts Payable and Other Liabilities.
	These derivative financial instruments are all interest rate swaps, which are designated and qualify as cash flow hedges. The Company does not use derivatives for trading or speculative purposes and currently does not have any derivatives that are not designated as hedges. The Company has master netting agreements; however, the Company does not have multiple derivatives subject to a single master netting agreement with the same counterparties. Therefore, none are offset in the accompanying Consolidated Balance Sheet.
	The Company expects to issue new debt in 2015 and 2017. In order to mitigate the risk of interest rates rising before new borrowings are obtained, the Company has $220 million of forward starting interest rate swaps to partially hedge the new debt expected to be issued in 2015 and another $220 million of forward starting interest rate swaps to partially hedge the new debt expected to be issued in 2017. These interest rate swaps lock in the 10-year treasury rate and swap spread at a weighted average fixed rate of 2.67% and 3.48%, respectively. A current market based credit spread applicable to Regency will be added to the locked in fixed rate at time of issuance that will determine the final bond yield.
	The effective portion of changes in the fair value of derivatives designated and qualifying as cash flow hedges is recorded in accumulated other comprehensive income (loss) and subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings within interest expense.
	The following table represents the effect of the derivative financial instruments on the accompanying consolidated financial statements (in thousands):
	Derivatives in FASB	Amount of Gain (Loss)						Location and Amount of Gain									Location and Amount of Gain or
	ASC Topic 815 Cash	Recognized in OCI on						(Loss) Reclassified									(Loss) Recognized in
	Flow Hedging	Derivative (Effective						from Accumulated									Income on  Derivative
	Relationships:	Portion)						OCI into Income									(Ineffective Portion and
								(Effective Portion)									Amount Excluded from
																	Effectiveness Testing)
		Three months ended September 30,								Three months ended September 30,									Three months ended September 30,
		2014				2013				2014				2013					2014			2013
	Interest rate swaps	$	(3,651	)		521		Interest		$	(2,217	)		(2,366	)		Other expenses		$	—		—
								expense
	Derivatives in FASB	Amount of Gain (Loss)						Location and Amount of Gain									Location and Amount of Gain or
	ASC Topic 815 Cash	Recognized in OCI on						(Loss) Reclassified									(Loss) Recognized in
	Flow Hedging	Derivative (Effective						from Accumulated									Income on  Derivative
	Relationships:	Portion)						OCI into Income									(Ineffective Portion and
								(Effective Portion)									Amount Excluded from
																	Effectiveness Testing)
		Nine months ended September 30,								Nine months ended September 30,									Nine months ended September 30,
		2014				2013				2014				2013					2014			2013
	Interest rate swaps	$	(28,603	)		22,225		Interest		$	(6,966	)		(7,098	)		Other expenses		$	—		(3	)
								expense
	As of September 30, 2014, the Company expects $8.7 million of net deferred losses on derivative instruments accumulated in other comprehensive income to be reclassified into earnings during the next 12 months, of which $8.2 million is related to previously settled swaps.

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	Fair Value Measurements
	(a) Disclosure of Fair Value of Financial Instruments
	All financial instruments of the Company are reflected in the accompanying Consolidated Balance Sheets at amounts which, in management's estimation, reasonably approximate their fair values, except for the following as of September 30, 2014 and December 31, 2013 (in thousands):
			2014						2013
			Carrying Amount			Fair Value			Carrying Amount		Fair Value
	Financial assets:
	Notes receivable	$	12,132			11,953		$	11,960		11,600
	Financial liabilities:
	Notes payable	$	1,948,243			2,116,000		$	1,779,697		1,936,400
	Unsecured credit facilities	$	75,000			75,000		$	75,000		75,400
	The table above reflects carrying amounts in the accompanying Consolidated Balance Sheets under the indicated captions. The above fair values represent the amounts that would be received from selling those assets or that would be paid to transfer those liabilities in an orderly transaction between market participants as of September 30, 2014 and December 31, 2013. These fair value measurements maximize the use of observable inputs. However, in situations where there is little, if any, market activity for the asset or liability at the measurement date, the fair value measurement reflects the Company's own judgments about the assumptions that market participants would use in pricing the asset or liability.
	The Company develops its judgments based on the best information available at the measurement date, including expected cash flows, appropriately risk-adjusted discount rates, and available observable and unobservable inputs. Service providers involved in fair value measurements are evaluated for competency and qualifications on an ongoing basis. The Company's valuation policies and procedures are determined by its Finance Group, which reports to the Chief Financial Officer, and the results of material fair value measurements are discussed with the Audit Committee of the Board of Directors on a quarterly basis. As considerable judgment is often necessary to estimate the fair value of these financial instruments, the fair values presented above are not necessarily indicative of amounts that will be realized upon disposition of the financial instruments.
	The following methods and assumptions were used to estimate the fair value of these financial instruments:
	Notes Receivable
	The fair value of the Company's notes receivable is estimated by calculating the present value of future contractual cash flows discounted at interest rates available for notes of the same terms and maturities, adjusted for counter-party specific credit risk. The fair value of notes receivable was determined primarily using Level 3 inputs of the fair value hierarchy, which considered counter-party credit risk and loan to value ratio on the underlying property securing the note receivable.
	Notes Payable
	The fair value of the Company's notes payable is estimated by discounting future cash flows of each instrument at rates that reflect the current market rates available to the Company for debt of the same terms and maturities. Fixed rate loans assumed in connection with real estate acquisitions are recorded in the accompanying consolidated financial statements at fair value at the time the property is acquired. The fair value of the notes payable was determined using Level 2 inputs of the fair value hierarchy.
	Unsecured Credit Facilities
	The fair value of the Company's unsecured credit facilities is estimated based on the interest rates currently offered to the Company by financial institutions. The fair value of the credit facilities was determined using Level 2 inputs of the fair value hierarchy.
	As of September 30, 2014 and December 31, 2013, the following interest rate ranges were used by the Company to estimate the fair value of its financial instruments:
			2014				2013
			Low		High		Low		High
	Notes receivable		7.40%		7.40%		7.80%		7.80%
	Notes payable		0.90%		3.80%		3.00%		3.50%
	Unsecured credit facilities		1.30%		1.30%		1.40%		1.40%
	(b) Fair Value Measurements
	The following financial instruments are measured at fair value on a recurring basis:
	Trading Securities Held in Trust
	The Company has investments in marketable securities, which are assets of the non-qualified deferred compensation plan ("NQDCP"), that are classified as trading securities held in trust on the accompanying Consolidated Balance Sheets. The fair value of the trading securities held in trust was determined using quoted prices in active markets, which are considered Level 1 inputs of the fair value hierarchy. Changes in the value of trading securities are recorded within net investment (income) loss from deferred compensation plan in the accompanying Consolidated Statements of Operations.
	Available-for-Sale Securities
	Available-for-sale securities consist of investments in shares of marketable equity securities, and are recorded at fair value using quoted prices in an active market, which are considered Level 1 inputs of the fair value hierarchy. Unrealized gains or losses on these securities are recognized through other comprehensive income.
	Interest Rate Derivatives
	The fair value of the Company's interest rate derivatives is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty's nonperformance risk in the fair value measurements.
	Although the Company has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads, to evaluate the likelihood of default by the Company and its counterparties. The Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its interest rate swaps. As a result, the Company determined that its interest rate swaps valuation in its entirety is classified in Level 2 of the fair value hierarchy.
	The following tables present the placement in the fair value hierarchy of assets and liabilities that are measured at fair value on a recurring basis (in thousands):
			Fair Value Measurements as of September 30, 2014
						Quoted Prices in Active Markets for Identical Assets			Significant Other Observable Inputs		Significant Unobservable Inputs
	Assets		Balance			(Level 1)			(Level 2)		(Level 3)
	Trading securities held in trust	$	27,365			27,365			—		—
	Available-for-sale securities		19,159			19,159			—		—
	Interest rate derivatives		6,905			—			6,905		—
	Total	$	53,429			46,524			6,905		—
	Liabilities
	Interest rate derivatives	$	(4,483	)		—			(4,483	)	—
			Fair Value Measurements as of December 31, 2013
						Quoted Prices in Active Markets for Identical Assets			Significant Other Observable Inputs		Significant Unobservable Inputs
	Assets		Balance			(Level 1)			(Level 2)		(Level 3)
	Trading securities held in trust	$	26,681			26,681			—		—
	Interest rate derivatives		35,237			—			35,237		—
	Total	$	61,918			26,681			35,237		—
	Liabilities
	Interest rate derivatives	$	(34	)		—			(34	)	—
	The following tables present assets that were measured at fair value on a nonrecurring basis (in thousands):
			Fair Value Measurements during the
			nine months ended September 30, 2014
						Quoted Prices in Active Markets for Identical Assets			Significant Other Observable Inputs		Significant Unobservable Inputs	Total Gains (Losses)
	Assets		Balance			(Level 1)			(Level 2)		(Level 3)
	Long-lived assets held and used
	Land	$	1,597			—			—		1,597	(225	)
			Fair Value Measurements during the
			year ended December 31, 2013
						Quoted Prices in Active Markets for Identical Assets			Significant Other Observable Inputs		Significant Unobservable Inputs	Total Gains (Losses)
	Assets		Balance			(Level 1)			(Level 2)		(Level 3)
Long-lived assets held and used
Operating and development properties	$	4,686			—			—		4,686	(6,000	)
Long-lived assets held and used are comprised primarily of real estate. Fair value for the long-lived assets held and used measured using Level 3 inputs was determined through the use of an income approach. The income approach estimates an income stream for a property (typically 10 years) and discounts this income plus a reversion (presumed sale) into a present value at a risk adjusted rate. Yield rates and growth assumptions utilized in this approach are derived from property specific information, market transactions, and other financial and industry data. The terminal cap rate and discount rate are significant inputs to this valuation.
During the nine months ended September 30, 2014, the Company recognized a $225,000 impairment on three parcels of land. The fair value of real estate measured during the nine months ended September 30, 2014, is based on the anticipated sales price of the land.
During the year ended December 31, 2013, the Company recognized a $6 million impairment on a single operating property as a result of an unoccupied anchor declaring bankruptcy, and the inability of the Company, at that time, to re-lease the anchor space. The following are the key inputs used in determining the fair value of real estate measured using Level 3 inputs during the year ended December 31, 2013:
		2013
Direct cap rates		8.00%
Rental growth rates		0.00%
Discount rates		9.00%
Terminal cap rates		8.50%
Changes in these inputs could result in a significant change in the valuation of the real estate and a change in the impairment loss recognized during the period.

Equity_and_Capital

Equity and Capital	9 Months Ended
	Sep. 30, 2014
Equity and Capital [Abstract]	'
Equity and Capital	'
	Equity and Capital
	Common Stock of the Parent Company
	Issuances:
	In March 2014, the Parent Company filed a prospectus supplement with the Securities and Exchange Commission with respect to a new ATM equity offering program, ending the prior program established in August 2013. The March 2014 program has similar terms and conditions as the August 2013 program and authorizes the Parent Company to sell up to $200 million of common stock at prices determined by the market at the time of sale. As of September 30, 2014, $150 million in common stock remained available for issuance under this ATM equity program.
	The following shares were issued under the ATM equity programs (in thousands, except price per share data):
			Three months ended September 30,						Nine months ended September 30,
			2014			2013			2014			2013
	Shares issued		872			30			872			1,899
	Weighted average price per share	$	57.35			52.28		$	57.35			53.35
	Total proceeds	$	49,995			1,568		$	49,995			101,342
	Commissions	$	695			24		$	695			1,520
	Issuance costs	$	—			69		$	—			69
	Common Units of the Operating Partnership
	Issuances:
	Common units were issued to the Parent Company in relation to the Parent Company's issuance of common stock, as discussed above.
	Accumulated Other Comprehensive Loss
	The following tables present changes in the balances of each component of accumulated other comprehensive loss (in thousands):
			Nine months ended September 30, 2014
			Loss on Settlement of Derivative Instruments				Fair Value of Derivative Instruments			Unrealized Gain on Available-for-Sale Securities			Accumulated Other Comprehensive Income (Loss)
	Beginning balance at December 31, 2013		$	(52,542	)		35,138			—			(17,404	)
	Net loss on cash flow derivative instruments		—				(28,326	)		—			(28,326	)
	Amounts reclassified from other comprehensive income		6,628				338			—			6,966
	Unrealized gain on available-for-sale securities		—				—			4,801			4,801
	Current period other comprehensive income, net		6,628				(27,988	)		4,801			(16,559	)
	Ending balance at September 30, 2014		$	(45,914	)		7,150			4,801			(33,963	)
			Nine months ended September 30, 2013
			Loss on Settlement of Derivative Instruments				Fair Value of Derivative Instruments			Unrealized Gain on Available-for-Sale Securities			Accumulated Other Comprehensive Income (Loss)
	Beginning balance at December 31, 2012		$	(61,991	)		4,276			—			(57,715	)
	Net gain on cash flow derivative instruments		—				22,187			—			22,187
	Amounts reclassified from other comprehensive income		7,086				12			—			7,098
	Unrealized gain on available-for-sale securities		—				—			—			—
	Current period other comprehensive income, net		7,086				22,199			—			29,285
	Ending balance at September 30, 2013		$	(54,905	)		26,475			—			(28,430	)
	The following represents amounts reclassified out of accumulated other comprehensive loss into earnings (in thousands):
	Details about Accumulated Other Comprehensive Loss Components		Amount Reclassified from Accumulated Other Comprehensive Loss													Affected Line Item in the Statement of Operations
			Three months ended September 30,							Nine months ended September 30,
			2014				2013			2014				2013
	Loss on cash flow hedges
	Interest rate derivative contracts		$	(2,217	)		(2,366	)		$	(6,966	)		(7,098	)	Interest expense

StockBased_Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock-Based Compensation	'
	Stock-Based Compensation
	The Company recorded stock-based compensation in general and administrative expenses in the accompanying Consolidated Statements of Operations, the components of which are further described below (in thousands):
		Three months ended September 30,					Nine months ended September 30,
		2014			2013		2014			2013
	Restricted stock (1)	$	2,915		3,622		$	8,747		10,600
	Directors' fees paid in common stock (1)	50			65		164			194
	Capitalized stock-based compensation (2)	(615		)	(620	)	(2,026		)	(1,567	)
	Stock-based compensation, net of capitalization	$	2,350		3,067		$	6,885		9,227
	(1) Includes amortization of the grant date fair value of restricted stock awards over the respective vesting periods.
	(2) Includes compensation expense specifically identifiable to development and leasing activities.
	During 2014, the Company granted 256,941 shares of restricted stock with a weighted-average grant-date fair value of $48.14 per share.

NonQualified_Deferred_Compensa

Non-Qualified Deferred Compensation Plan	9 Months Ended
	Sep. 30, 2014
Non Qualified Deferred Compensation Plan [Abstract]	'
Non-Qualified Deferred Compensation Plan	'
	Non-Qualified Deferred Compensation Plan
	The Company maintains a NQDCP which allows select employees and directors to defer part or all of their salary, cash bonus, and restricted stock awards. All contributions into the participants' accounts are fully vested upon contribution to the NQDCP and are deposited into a Rabbi trust. The participants' deferred compensation liability is included within accounts payable and other liabilities in the accompanying Consolidated Balance Sheets and was $26.8 million and $26.1 million at September 30, 2014 and December 31, 2013, respectively.

Earnings_per_Share_and_Unit

Earnings per Share and Unit	9 Months Ended
	Sep. 30, 2014
Earnings per Share and Unit [Abstract]	'
Earnings per Share and Unit	'
	Earnings per Share and Unit
	Parent Company Earnings per Share
	The following summarizes the calculation of basic and diluted earnings per share (in thousands except per share data):
			Three months ended September 30,			Nine months ended September 30,
			2014	2013		2014	2013
	Numerator:
	Continuing Operations
	Income from continuing operations	$	25,882	23,016	$	80,061	63,170
	Gain on sale of real estate, net of tax		27,558	56		29,598	1,773
	Less: income (loss) attributable to noncontrolling interests		232	367		1,048	990
	Income from continuing operations attributable to the Company		53,208	22,705		108,611	63,953
	Less: preferred stock dividends		5,266	5,266		15,797	15,797
	Less: dividends paid on unvested restricted stock		149	148		448	445
	Income from continuing operations attributable to common stockholders - basic		47,793	17,291		92,366	47,711
	Add: dividends paid on Treasury Method restricted stock		24	15		50	55
	Income from continuing operations attributable to common stockholders - diluted		47,817	17,306		92,416	47,766
	Discontinued Operations
	Income from discontinued operations		—	17,592		—	34,325
	Less: income from discontinued operations attributable to noncontrolling interests		—	33		—	65
	Income from discontinued operations attributable to the Company		—	17,559		—	34,260
	Net Income
	Net income attributable to common stockholders - basic		47,793	34,850		92,366	81,971
	Net income attributable to common stockholders - diluted	$	47,817	34,865	$	92,416	82,026
	Denominator:
	Weighted average common shares outstanding for basic EPS		92,345	91,985		92,071	91,147
	Incremental shares to be issued under unvested restricted stock		51	33		36	40
	Incremental shares to be issued for common stock options		—	—		—	—
	Weighted average common shares outstanding for diluted EPS		92,396	92,018		92,107	91,187
	Income per common share – basic
	Continuing operations	$	0.52	0.19	$	1	0.52
	Discontinued operations		—	0.19		—	0.38
	Net income attributable to common stockholders	$	0.52	0.38	$	1	0.9
	Income per common share – diluted
	Continuing operations	$	0.52	0.19	$	1	0.52
	Discontinued operations		—	0.19		—	0.38
	Net income attributable to common stockholders	$	0.52	0.38	$	1	0.9
	Income allocated to noncontrolling interests of the Operating Partnership has been excluded from the numerator and exchangeable Operating Partnership units have been omitted from the denominator for the purpose of computing diluted earnings per share since the effect of including these amounts in the numerator and denominator would have no impact. Weighted average exchangeable Operating Partnership units outstanding for the three and nine months ended September 30, 2014 were 158,920 and 159,229, respectively, and for the three and nine months ended September 30, 2013 were 167,649 and 173,946, respectively.
	Operating Partnership Earnings per Unit
	The following summarizes the calculation of basic and diluted earnings per unit (in thousands except per unit data):
			Three months ended September 30,			Nine months ended September 30,
			2014	2013		2014	2013
	Numerator:
	Continuing Operations
	Income from continuing operations	$	25,882	23,016	$	80,061	63,170
	Gain on sale of real estate, net of tax		27,558	56		29,598	1,773
	Less: income attributable to noncontrolling interests		142	294		863	807
	Income from continuing operations attributable to the Partnership		53,298	22,778		108,796	64,136
	Less: preferred unit distributions		5,266	5,266		15,797	15,797
	Less: dividends paid on unvested restricted units		149	148		448	445
	Income from continuing operations attributable to common unit holders - basic		47,883	17,364		92,551	47,894
	Add: dividends paid on Treasury Method restricted units		24	15		50	55
	Income from continuing operations attributable to common unit holders - diluted		47,907	17,379		92,601	47,949
	Discontinued Operations
	Income from discontinued operations		—	17,592		—	34,325
	Less: income from discontinued operations attributable to noncontrolling interests			33			65
	Income from discontinued operations attributable to the Partnership		—	17,559		—	34,260
	Net Income
	Net income attributable to common unit holders - basic		47,883	34,923		92,551	82,154
	Net income attributable to common unit holders - diluted	$	47,907	34,938	$	92,601	82,209
	Denominator:
	Weighted average common units outstanding for basic EPU		92,505	92,153		92,231	91,321
	Incremental units to be issued under unvested restricted stock		51	33		36	40
	Weighted average common units outstanding for diluted EPU		92,556	92,186		92,267	91,361
Income per common unit – basic
Continuing operations	$	0.52	0.19	$	1	0.52
Discontinued operations		—	0.19		—	0.38
Net income attributable to common unit holders	$	0.52	0.38	$	1	0.9
Income per common unit – diluted
Continuing operations	$	0.52	0.19	$	1	0.52
Discontinued operations		—	0.19		—	0.38
Net income attributable to common unit holders	$	0.52	0.38	$	1	0.9

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	The Company is involved in litigation on a number of matters and is subject to certain claims, which arise in the normal course of business, none of which, in the opinion of management, is expected to have a material adverse effect on the Company's consolidated financial position, results of operations, or liquidity. Legal fees are expensed as incurred.
	The Company is also subject to numerous environmental laws and regulations as they apply to real estate pertaining to chemicals used by the dry cleaning industry, the existence of asbestos in older shopping centers, and underground petroleum storage tanks. The Company believes that the ultimate disposition of currently known environmental matters will not have a material effect on its financial position, liquidity, or operations; however, it can give no assurance that existing environmental studies with respect to the shopping centers have revealed all potential environmental liabilities; that any previous owner, occupant or tenant did not create any material environmental condition not known to it; that the current environmental condition of the shopping centers will not be affected by tenants and occupants, by the condition of nearby properties, or by unrelated third parties; or that changes in applicable environmental laws and regulations or their interpretation will not result in additional environmental liability to the Company.
	The Company has the right to issue letters of credit under the Line up to an amount not to exceed $80.0 million, which reduces the credit availability under the Line. The Company also has stand alone letters of credit with other banks. These letters of credit are primarily issued as collateral to facilitate the construction of development projects. As of September 30, 2014 and December 31, 2013, the Company had $5.9 million and $19.3 million letters of credit outstanding, respectively.

Availableforsale_Securities_No

Available-for-sale Securities (Notes)	9 Months Ended
	Sep. 30, 2014
Schedule of Available-for-sale Securities [Line Items]	'
Available-for-sale Securities [Table Text Block]	'
	Available-for-Sale Securities
	Available-for-sale securities are included in other assets in the accompanying Consolidated Balance Sheets, and consists of the following (in thousands):
		September 30, 2014
		Amortized Cost		Gains in Accumulated Other Comprehensive Loss		Losses in Accumulated Other Comprehensive Loss		Estimated Fair Value
	Common stock	$	14,350	$	4,809	$	—	$	19,159
	The Company did not have any available-for-sale securities at December 31, 2013.
	During the nine months ended September 30, 2014, the Company acquired common stock of AmREIT, Inc. ("AmREIT"). During the nine months ended September 30, 2014, no available-for-sale securities were sold. Net unrealized holding gains on available-for-sale securities, of approximately $4.8 million for the nine months ended September 30, 2014, have been included in accumulated other comprehensive loss in the accompanying Consolidated Balance Sheets.

Real_Estate_Investments_Real_E

Real Estate Investments Real Estate Investments (Tables)	9 Months Ended
	Sep. 30, 2014
Business Combinations [Abstract]	'
Schedule of business acquisitions	'
	The following tables detail the shopping centers acquired or land acquired for development (in thousands):
	Nine months ended September 30, 2014
	Date Purchased	Property Name	City/State	Property Type	Ownership	Purchase Price	Debt Assumed, Net of Premiums	Intangible Assets	Intangible Liabilities
	1/31/14	Persimmon Place	Dublin, CA	Development	100%	$14,200	—	—	—
	2/14/14	Shops at Mira Vista	Austin, TX	Operating	100%	22,500	319	2,329	291
	3/7/14	Fairfield Portfolio (1)	Fairfield, CT	Operating	80%	149,344	77,730	12,733	5,647
	6/2/14	Willow Oaks Crossing	Concord, NC	Development	100%	3,342	—	—	—
	7/15/14	Clybourn Commons	Chicago, IL	Operating	100%	19,000	—	1,686	3,298
	9/10/14	Belmont Chase	Ashburn, VA	Development	100%	4,300	—	—	—
	9/19/14	CityLine Market	Dallas, TX	Development	100%	4,913	—	—	—
	Total property acquisitions					$217,599	78,049	16,748	9,236
	Nine months ended September 30, 2013
	Date Purchased	Property Name	City/State	Property Type	Ownership	Purchase Price	Debt Assumed, Net of Premiums	Intangible Assets	Intangible Liabilities
	5/30/13	Preston Oaks	Dallas, TX	Operating	100%	$27,000	—	3,396	7,597
	7/23/13	Shoppes of Burnt Mills	Silver Springs, MD	Operating	20%	13,600	7,496	8,438	332
	Total property acquisitions					$40,600	$7,496	$11,834	$7,929
	(1) On March 7, 2014, the Company acquired an 80% controlling interest in the Fairfield Portfolio and paid $56.6 million for its pro-rata share of the acquisition, net of debt and other liabilities assumed. As a result of consolidation, the Company recorded the non-controlling interest of approximately $15.4 million at fair value. The portfolio consists of three operating properties located in Fairfield, CT.

Property_Dispositions_Tables

Property Dispositions (Tables)	9 Months Ended
	Sep. 30, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Schedule of properties disposed of	'
	The following table provides a summary of shopping centers and land out-parcels disposed of (dollars in thousands):
			Three months ended September 30,				Nine months ended September 30,
			2014		2013		2014		2013
	Net proceeds from sale of real estate investments	$	55,569		48,999	$	62,788		131,363
	Gain on sale of real estate, net of tax	$	27,558		16,108	$	29,598		29,235
	Number of operating properties sold		4		4		6		8
	Number of land out-parcels sold		2		—		5		—
	Percent interest sold		100%		100%		100%		100%
	As a result of adopting ASU No. 2014-08, there were no discontinued operations for the three and nine months ended September 30, 2014 as none of the current year sales represented a strategic shift that would qualify as discontinued operations. The following table provides a summary of revenues and expenses from properties included in discontinued operations during 2013 (in thousands):
			Three months ended September 30,				Nine months ended September 30,
				2013				2013
	Revenues	$		3,120		$		13,970
	Operating expenses			1,580				7,107
	Operating income from discontinued operations	$		1,540		$		6,863

Income_Taxes_Income_Taxes_Tabl

Income Taxes Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Schedule of Income Tax Expense (Benefit), Intraperiod Tax Allocation [Table Text Block]	'
			Three months ended September 30,			Nine months ended September 30,
	Income tax expense (benefit) from:		2014	2013		2014	2013
	Continuing operations	$	1,180	—	$	1,546	—
	Total income tax expense	$	1,180	—	$	1,546	—

Notes_Payable_and_Unsecured_Cr1

Notes Payable and Unsecured Credit Facilities (Tables)	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Schedule of long-term debt	'
	The Company’s debt outstanding as of September 30, 2014 and December 31, 2013 consists of the following (in thousands):
			2014	2013
	Notes payable:
	Fixed rate mortgage loans	$	521,719	444,245
	Variable rate mortgage loans		29,125	37,100
	Fixed rate unsecured loans		1,397,399	1,298,352
	Total notes payable		1,948,243	1,779,697
	Unsecured credit facilities:
	Term Loan		75,000	75,000
	Total unsecured credit facilities		75,000	75,000
	Total debt outstanding	$	2,023,243	1,854,697
Schedule of maturities of long-term debt	'
	As of September 30, 2014, scheduled principal payments and maturities on notes payable were as follows (in thousands):
	Scheduled Principal Payments and Maturities by Year:		Scheduled	Mortgage Loan	Unsecured		Total
			Principal	Maturities	Maturities (1)
			Payments
	2014	$	1,970	—	—		1,970
	2015		6,618	75,937	350,000		432,555
	2016		6,135	41,442	—		47,577
	2017		5,399	116,098	400,000		521,497
	2018		4,453	57,358	—		61,811
	Beyond 5 Years		26,091	201,324	725,000		952,415
	Unamortized debt premiums (discounts), net		—	8,019	(2,601	)	5,418
	Total	$	50,666	500,178	1,472,399		2,023,243
	(1) Includes unsecured public debt and unsecured credit facilities.

Derivatives_Tables

Derivatives (Tables)	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Schedule of derivative instruments	'
	The following table summarizes the terms and fair values of the Company's derivative financial instruments, as well as their classification on the Consolidated Balance Sheets, as of September 30, 2014 and December 31, 2013 (in thousands):
													Fair Value
													Assets (3)						Liabilities (3)
	Effective Date		Maturity Date		Early Termination Date (1)		Notional Amount		Bank Pays Variable Rate of		Regency Pays Fixed Rate of		2014			2013			2014		2013
	10/1/11		9/1/14		N/A	$	9,000		1 Month LIBOR		0.76%	$	—			—		$	—		(34	)
	10/16/13		10/16/20		N/A		28,100		1 Month LIBOR		2.20%		—			82			(395	)	—
	4/15/14		4/15/24		10/15/14	(2)	35,000		3 Month LIBOR		2.87%		—			1,036			—		—
	4/15/14		4/15/24		10/15/14	(2)	60,000		3 Month LIBOR		2.86%		—			1,821			—		—
	4/15/14		4/15/24		10/15/14	(2)	75,000		3 Month LIBOR		2.09%		—			7,476			—		—
	4/15/14		4/15/24		10/15/14	(2)	50,000		3 Month LIBOR		2.09%		—			4,978			—		—
	8/1/15		8/1/25		2/1/16		75,000		3 Month LIBOR		2.48%		2,959			8,516			—		—
	8/1/15		8/1/25		2/1/16		50,000		3 Month LIBOR		2.48%		1,973			5,670			—		—
	8/1/15		8/1/25		2/1/16		50,000		3 Month LIBOR		2.48%		1,973			5,658			—		—
	8/1/15		8/1/25		2/1/16		45,000		3 Month LIBOR		3.41%		—			—			(1,929	)	—
	6/15/17		6/15/27		12/15/17		20,000		3 Month LIBOR		3.49%		—			—			(204	)	—
	6/15/17		6/15/27		12/15/17		100,000		3 Month LIBOR		3.48%		—			—			(973	)	—
	6/15/17		6/15/27		12/15/17		100,000		3 Month LIBOR		3.48%		—			—			(982	)	—
	Total derivative financial instruments											$	6,905			35,237			(4,483	)	(34	)
	(1) Represents the date specified in the agreement for either optional or mandatory early termination which will result in cash settlement.
Summary of effect of derivative instruments on the financial statements	'
	Derivatives in FASB	Amount of Gain (Loss)						Location and Amount of Gain									Location and Amount of Gain or
	ASC Topic 815 Cash	Recognized in OCI on						(Loss) Reclassified									(Loss) Recognized in
	Flow Hedging	Derivative (Effective						from Accumulated									Income on  Derivative
	Relationships:	Portion)						OCI into Income									(Ineffective Portion and
								(Effective Portion)									Amount Excluded from
																	Effectiveness Testing)
		Three months ended September 30,								Three months ended September 30,									Three months ended September 30,
		2014				2013				2014				2013					2014			2013
	Interest rate swaps	$	(3,651	)		521		Interest		$	(2,217	)		(2,366	)		Other expenses		$	—		—
								expense
	Derivatives in FASB	Amount of Gain (Loss)						Location and Amount of Gain									Location and Amount of Gain or
	ASC Topic 815 Cash	Recognized in OCI on						(Loss) Reclassified									(Loss) Recognized in
	Flow Hedging	Derivative (Effective						from Accumulated									Income on  Derivative
	Relationships:	Portion)						OCI into Income									(Ineffective Portion and
								(Effective Portion)									Amount Excluded from
																	Effectiveness Testing)
		Nine months ended September 30,								Nine months ended September 30,									Nine months ended September 30,
		2014				2013				2014				2013					2014			2013
	Interest rate swaps	$	(28,603	)		22,225		Interest		$	(6,966	)		(7,098	)		Other expenses		$	—		(3	)
								expense

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2014											Sep. 30, 2013
Fair Value Disclosures [Abstract]	'											'
Summary of balance sheet fair values	'											'
	All financial instruments of the Company are reflected in the accompanying Consolidated Balance Sheets at amounts which, in management's estimation, reasonably approximate their fair values, except for the following as of September 30, 2014 and December 31, 2013 (in thousands):
			2014				2013
			Carrying Amount		Fair Value		Carrying Amount		Fair Value
	Financial assets:
	Notes receivable	$	12,132		11,953	$	11,960		11,600
	Financial liabilities:
	Notes payable	$	1,948,243		2,116,000	$	1,779,697		1,936,400
	Unsecured credit facilities	$	75,000		75,000	$	75,000		75,400
Summary of assets measured on recurring basis	'											'
	The following tables present the placement in the fair value hierarchy of assets and liabilities that are measured at fair value on a recurring basis (in thousands):
			Fair Value Measurements as of September 30, 2014
					Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
	Assets		Balance		(Level 1)		(Level 2)		(Level 3)
	Trading securities held in trust	$	27,365		27,365		—		—
	Available-for-sale securities		19,159		19,159		—		—
	Interest rate derivatives		6,905		—		6,905		—
	Total	$	53,429		46,524		6,905		—
	Liabilities
	Interest rate derivatives	$	(4,483	)	—		(4,483	)	—
			Fair Value Measurements as of December 31, 2013
					Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
	Assets		Balance		(Level 1)		(Level 2)		(Level 3)
	Trading securities held in trust	$	26,681		26,681		—		—
	Interest rate derivatives		35,237		—		35,237		—
	Total	$	61,918		26,681		35,237		—
	Liabilities
	Interest rate derivatives	$	(34	)	—		(34	)	—
Summary of assets measured on nonrecurring basis	'											'
	The following tables present assets that were measured at fair value on a nonrecurring basis (in thousands):
			Fair Value Measurements during the
			nine months ended September 30, 2014
					Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs	Total Gains (Losses)
	Assets		Balance		(Level 1)		(Level 2)		(Level 3)
	Long-lived assets held and used
	Land	$	1,597		—		—		1,597	(225	)
			Fair Value Measurements during the
			year ended December 31, 2013
					Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs	Total Gains (Losses)
	Assets		Balance		(Level 1)		(Level 2)		(Level 3)
	Long-lived assets held and used
	Operating and development properties	$	4,686		—		—		4,686	(6,000	)
Summary of assumptions used	'											'
												The following are the key inputs used in determining the fair value of real estate measured using Level 3 inputs during the year ended December 31, 2013:
													2013
												Direct cap rates	8.00%
												Rental growth rates	0.00%
												Discount rates	9.00%
												Terminal cap rates	8.50%

Equity_and_Capital_Tables

Equity and Capital (Tables)	9 Months Ended
	Sep. 30, 2014
Equity and Capital [Abstract]	'
Summary of shares issued under ATM equity programs	'
	The following shares were issued under the ATM equity programs (in thousands, except price per share data):
			Three months ended September 30,						Nine months ended September 30,
			2014			2013			2014			2013
	Shares issued		872			30			872			1,899
	Weighted average price per share	$	57.35			52.28		$	57.35			53.35
	Total proceeds	$	49,995			1,568		$	49,995			101,342
	Commissions	$	695			24		$	695			1,520
	Issuance costs	$	—			69		$	—			69
Summary of accumulated other comprehensive loss	'
	The following tables present changes in the balances of each component of accumulated other comprehensive loss (in thousands):
			Nine months ended September 30, 2014
			Loss on Settlement of Derivative Instruments				Fair Value of Derivative Instruments			Unrealized Gain on Available-for-Sale Securities			Accumulated Other Comprehensive Income (Loss)
	Beginning balance at December 31, 2013		$	(52,542	)		35,138			—			(17,404	)
	Net loss on cash flow derivative instruments		—				(28,326	)		—			(28,326	)
	Amounts reclassified from other comprehensive income		6,628				338			—			6,966
	Unrealized gain on available-for-sale securities		—				—			4,801			4,801
	Current period other comprehensive income, net		6,628				(27,988	)		4,801			(16,559	)
	Ending balance at September 30, 2014		$	(45,914	)		7,150			4,801			(33,963	)
			Nine months ended September 30, 2013
			Loss on Settlement of Derivative Instruments				Fair Value of Derivative Instruments			Unrealized Gain on Available-for-Sale Securities			Accumulated Other Comprehensive Income (Loss)
	Beginning balance at December 31, 2012		$	(61,991	)		4,276			—			(57,715	)
	Net gain on cash flow derivative instruments		—				22,187			—			22,187
	Amounts reclassified from other comprehensive income		7,086				12			—			7,098
	Unrealized gain on available-for-sale securities		—				—			—			—
	Current period other comprehensive income, net		7,086				22,199			—			29,285
	Ending balance at September 30, 2013		$	(54,905	)		26,475			—			(28,430	)
Schedule of amounts reclassified out of accumulated other comprehensive loss	'
	The following represents amounts reclassified out of accumulated other comprehensive loss into earnings (in thousands):
	Details about Accumulated Other Comprehensive Loss Components		Amount Reclassified from Accumulated Other Comprehensive Loss													Affected Line Item in the Statement of Operations
			Three months ended September 30,							Nine months ended September 30,
			2014				2013			2014				2013
	Loss on cash flow hedges
	Interest rate derivative contracts		$	(2,217	)		(2,366	)		$	(6,966	)		(7,098	)	Interest expense

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Summary of stock compensation expenses	'
	The Company recorded stock-based compensation in general and administrative expenses in the accompanying Consolidated Statements of Operations, the components of which are further described below (in thousands):
		Three months ended September 30,					Nine months ended September 30,
		2014			2013		2014			2013
	Restricted stock (1)	$	2,915		3,622		$	8,747		10,600
	Directors' fees paid in common stock (1)	50			65		164			194
	Capitalized stock-based compensation (2)	(615		)	(620	)	(2,026		)	(1,567	)
	Stock-based compensation, net of capitalization	$	2,350		3,067		$	6,885		9,227
	(1) Includes amortization of the grant date fair value of restricted stock awards over the respective vesting periods.
	(2) Includes compensation expense specifically identifiable to development and leasing activities.

Earnings_per_Share_and_Unit_Ta

Earnings per Share and Unit (Tables)	9 Months Ended
	Sep. 30, 2014
Parent Company [Member]	'
Schedule of earnings per share	'
	The following summarizes the calculation of basic and diluted earnings per share (in thousands except per share data):
			Three months ended September 30,			Nine months ended September 30,
			2014	2013		2014	2013
	Numerator:
	Continuing Operations
	Income from continuing operations	$	25,882	23,016	$	80,061	63,170
	Gain on sale of real estate, net of tax		27,558	56		29,598	1,773
	Less: income (loss) attributable to noncontrolling interests		232	367		1,048	990
	Income from continuing operations attributable to the Company		53,208	22,705		108,611	63,953
	Less: preferred stock dividends		5,266	5,266		15,797	15,797
	Less: dividends paid on unvested restricted stock		149	148		448	445
	Income from continuing operations attributable to common stockholders - basic		47,793	17,291		92,366	47,711
	Add: dividends paid on Treasury Method restricted stock		24	15		50	55
	Income from continuing operations attributable to common stockholders - diluted		47,817	17,306		92,416	47,766
	Discontinued Operations
	Income from discontinued operations		—	17,592		—	34,325
	Less: income from discontinued operations attributable to noncontrolling interests		—	33		—	65
	Income from discontinued operations attributable to the Company		—	17,559		—	34,260
	Net Income
	Net income attributable to common stockholders - basic		47,793	34,850		92,366	81,971
	Net income attributable to common stockholders - diluted	$	47,817	34,865	$	92,416	82,026
	Denominator:
	Weighted average common shares outstanding for basic EPS		92,345	91,985		92,071	91,147
	Incremental shares to be issued under unvested restricted stock		51	33		36	40
	Incremental shares to be issued for common stock options		—	—		—	—
	Weighted average common shares outstanding for diluted EPS		92,396	92,018		92,107	91,187
	Income per common share – basic
	Continuing operations	$	0.52	0.19	$	1	0.52
	Discontinued operations		—	0.19		—	0.38
	Net income attributable to common stockholders	$	0.52	0.38	$	1	0.9
	Income per common share – diluted
	Continuing operations	$	0.52	0.19	$	1	0.52
	Discontinued operations		—	0.19		—	0.38
	Net income attributable to common stockholders	$	0.52	0.38	$	1	0.9
Partnership Interest [Member]	'
Schedule of earnings per share	'
	The following summarizes the calculation of basic and diluted earnings per unit (in thousands except per unit data):
			Three months ended September 30,			Nine months ended September 30,
			2014	2013		2014	2013
	Numerator:
	Continuing Operations
	Income from continuing operations	$	25,882	23,016	$	80,061	63,170
	Gain on sale of real estate, net of tax		27,558	56		29,598	1,773
	Less: income attributable to noncontrolling interests		142	294		863	807
	Income from continuing operations attributable to the Partnership		53,298	22,778		108,796	64,136
	Less: preferred unit distributions		5,266	5,266		15,797	15,797
	Less: dividends paid on unvested restricted units		149	148		448	445
	Income from continuing operations attributable to common unit holders - basic		47,883	17,364		92,551	47,894
	Add: dividends paid on Treasury Method restricted units		24	15		50	55
	Income from continuing operations attributable to common unit holders - diluted		47,907	17,379		92,601	47,949
	Discontinued Operations
	Income from discontinued operations		—	17,592		—	34,325
	Less: income from discontinued operations attributable to noncontrolling interests			33			65
	Income from discontinued operations attributable to the Partnership		—	17,559		—	34,260
	Net Income
	Net income attributable to common unit holders - basic		47,883	34,923		92,551	82,154
	Net income attributable to common unit holders - diluted	$	47,907	34,938	$	92,601	82,209
	Denominator:
	Weighted average common units outstanding for basic EPU		92,505	92,153		92,231	91,321
	Incremental units to be issued under unvested restricted stock		51	33		36	40
	Weighted average common units outstanding for diluted EPU		92,556	92,186		92,267	91,361
	Income per common unit – basic
	Continuing operations	$	0.52	0.19	$	1	0.52
	Discontinued operations		—	0.19		—	0.38
	Net income attributable to common unit holders	$	0.52	0.38	$	1	0.9
	Income per common unit – diluted
	Continuing operations	$	0.52	0.19	$	1	0.52
	Discontinued operations		—	0.19		—	0.38
	Net income attributable to common unit holders	$	0.52	0.38	$	1	0.9

Organization_and_Principles_of1

Organization and Principles of Consolidation (Details)	9 Months Ended
	Sep. 30, 2014
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]	'
Operations commenced date	31-Dec-93
Wholly Owned Properties [Member]	'
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]	'
Number of real estate properties	205
Unconsolidated Properties [Member]	'
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]	'
Number of real estate properties	121
Parent Company [Member]	'
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]	'
Ownership percentage of outstanding common partnership units	99.80%

Real_Estate_Investments_Busine

Real Estate Investments Business Acquisitions (Details) (USD $)

3 Months Ended

9 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Jan. 31, 2014

Feb. 14, 2014

Mar. 07, 2014

30-May-13

30-May-13

Jun. 02, 2014

Jun. 02, 2014

Jul. 15, 2014

Jul. 15, 2014

Sep. 10, 2014

Sep. 10, 2014

Sep. 19, 2014

Sep. 19, 2014

Jul. 23, 2013

Jul. 23, 2013

Sep. 30, 2014

Sep. 30, 2013

Mar. 07, 2014

Mar. 20, 2013

Mar. 20, 2013

Sep. 30, 2013

Sep. 30, 2013

Persimmon Place [Member]

Shops at Mira Vista [Member]

Fairfield Portfolio [Member]

Willow Oaks Crossing [Member]

Willow Oaks Crossing [Member]

Willow Oaks Crossing [Member]

Willow Oaks Crossing [Member]

Clybourn Commons [Member]

Clybourn Commons [Member]

Belmont Chase [Member]

Belmont Chase [Member]

City Line Market [Member]

City Line Market [Member]

Shoppes of Burnt Mills [Member]

Shoppes of Burnt Mills [Member]

Partnership Interest [Member]

Partnership Interest [Member]

Partnership Interest [Member]

Macquarie Country Wide - Regency Iii, Llc [Member]

Consolidated Entities [Member]

Consolidated Entities [Member]

Fixed Rate Mortgage Loans [Member]

property

Hilltop Village [Member]

Hilltop Village [Member]

Consolidated Entities [Member]

Hilltop Village [Member]

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Document Period End Date

'

'

30-Sep-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Date Purchased

'

'

'

'

'

31-Jan-14

14-Feb-14

7-Mar-14

[1]

30-May-13

[1]

'

2-Jun-14

[1]

'

15-Jul-14

[1]

'

10-Sep-14

[1]

'

19-Sep-14

[1]

'

23-Jul-13

[1]

'

'

'

'

'

'

'

'

Property Name

'

'

'

'

'

'Persimmon Place

'Shops at Mira Vista

'Fairfield Portfolio (1)

[1]

'Preston Oaks

[1]

'

'Willow Oaks Crossing

[1]

'

'Clybourn Commons

[1]

'

'Belmont Chase

[1]

'

'CityLine Market

[1]

'

'Shoppes of Burnt Mills

[1]

'

'

'

'

'

'

'

'

City/State

'

'

'

'

'

'Dublin, CA

'Austin, TX

'Fairfield, CT

[1]

'Dallas, TX

[1]

'

'Concord, NC

[1]

'

'Chicago, IL

[1]

'

'Ashburn, VA

[1]

'

'Dallas, TX

[1]

'

'Silver Springs, MD

[1]

'

'

'

'

'

'

'

'

Property Type

'

'

'

'

'

'Development

'Operating

'Operating

[1]

'Operating

[1]

'

'Development

[1]

'

'Operating

[1]

'

'Development

[1]

'

'Development

[1]

'

'Operating

[1]

'

'

'

'

'

'

'

'

Ownership

'

'

'

'

'

100.00%

100.00%

80.00%

[1]

'

100.00%

[1]

'

100.00%

[1]

'

100.00%

[1]

'

100.00%

[1]

'

100.00%

[1]

'

20.00%

[1]

'

'

'

24.95%

'

'

'

Purchase price, pro rated portion

'

'

'

'

'

'

'

$56,600,000

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Purchase Price

'

'

217,599,000

40,600,000

'

14,200,000

22,500,000

149,344,000

[1]

27,000,000

[1]

'

3,342,000

[1]

'

19,000,000

[1]

'

4,300,000

[1]

'

4,913,000

[1]

'

13,600,000

[1]

'

'

'

'

'

'

'

'

Non-controlling interest recorded, fair value

'

'

'

'

'

'

'

15,400,000

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

0

15,385,000

'

'

'

'

Number of real estate properties acquired

'

'

'

'

'

'

'

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Assumed, Net of Premiums

78,049,000

'

78,049,000

'

7,496,000

0

319,000

77,730,000

[1]

'

0

[1]

'

0

[1]

'

0

[1]

'

0

[1]

'

0

[1]

'

7,496,000

[1]

'

'

'

'

'

'

'

Intangible Assets

16,748,000

11,834,000

'

'

'

0

2,329,000

12,733,000

[1]

3,396,000

[1]

'

0

[1]

'

1,686,000

[1]

'

0

[1]

'

0

[1]

'

8,438,000

[1]

'

'

'

'

'

'

'

'

Intangible Liabilities

9,236,000

'

9,236,000

'

7,929,000

0

291,000

5,647,000

[1]

'

7,597,000

[1]

'

0

[1]

'

3,298,000

[1]

'

0

[1]

'

0

[1]

'

332,000

[1]

'

'

'

'

'

'

'

Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

Equity Method Investment, Amount Sold

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7,600,000

'

Mortgage loans assumed for the acquisition of real estate, net of premiums

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$78,049,000

$0

'

'

'

'

$7,500,000

[1]

On March 7, 2014, the Company acquired an 80% controlling interest in the Fairfield Portfolio and paid $56.6 million for its pro-rata share of the acquisition, net of debt and other liabilities assumed. As a result of consolidation, the Company recorded the non-controlling interest of approximately $15.4 million at fair value. The portfolio consists of three operating properties located in Fairfield, CT.

Property_Dispositions_Details

Property Dispositions (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'
Proceeds from Sale of Real Estate	$55,569	$48,999	$62,788	$131,363
Gain (Loss) on Sale of Properties	27,558	16,108	29,598	29,235
Wholly Owned Properties [Member]	'	'	'	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'
Percent interest sold	100.00%	100.00%	100.00%	100.00%
Segment, Discontinued Operations [Member]	'	'	'	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'
Revenues	'	3,120	'	13,970
Operating expenses	'	1,580	'	7,107
Parent Company [Member]	'	'	'	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'
Gain (Loss) on Sale of Properties	27,558	56	29,598	1,773
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	0	16,052	0	27,462
Revenues	133,559	120,318	401,733	363,002
Operating expenses	85,923	78,777	262,574	238,617
Operating income from discontinued operations	0	1,540	0	6,863
Provision for impairment	$0	$6,000	$225	$6,000
Operating Segments [Member]	'	'	'	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'
Number of operating properties sold	4	4	6	8
Land [Member]	'	'	'	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'
Number of operating properties sold	2	0	5	0

Income_Taxes_Income_Tax_Detail

Income Taxes Income Tax (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'	'	'	'
Document Fiscal Year Focus	'	'	'2014	'
Income Tax Expense (Benefit)	$1,180	$0	$1,546	$0
Income Tax Expense (Benefit), Intraperiod Tax Allocation	$1,180	$0	$1,546	$0

Notes_Payable_and_Unsecured_Cr2

Notes Payable and Unsecured Credit Facilities (Details) (USD $)

9 Months Ended

9 Months Ended

133 Months Ended

60 Months Ended

9 Months Ended

9 Months Ended

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

Jun. 25, 2025

26-May-14

Jun. 27, 2019

Sep. 30, 2014

Sep. 30, 2014

Aug. 27, 2014

Sep. 29, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Notes Payable to Banks [Member]

Notes Payable to Banks [Member]

Fixed Rate Mortgage Loans [Member]

Fixed Rate Mortgage Loans [Member]

Variable Rate Mortgage Loans [Member]

Variable Rate Mortgage Loans [Member]

Fixed Rate Unsecured Loans [Member]

Fixed Rate Unsecured Loans [Member]

Unsecured Debt [Member]

Unsecured Debt [Member]

Term Loan [Member]

Term Loan [Member]

Parent Company [Member]

Parent Company [Member]

Debt Offering 4/1/04 [Member]

6.2% maturing 7/1/14 [Member]

3.75% unsecured maturing 6/15/24 [Member]

3.75% unsecured maturing 6/15/24 [Member]

$165 mill Term Loan LIBOR plus 1.15, .20% unused fee [Member]

$165 mill Term Loan LIBOR plus 1.15, .20% unused fee [Member]

5.2% maturing 1/1/15 [Member]

3.78% maturing 9/1/24 [Member]

3.41% maturing 10/5/24 [Member]

Consolidated Entities [Member]

Consolidated Entities [Member]

Consolidated Entities [Member]

Consolidated Entities [Member]

Consolidated Entities [Member]

Scheduled Principal Payments [Member]

Mortgage Loan Maturities [Member]

Unsecured Maturities [Member]

Long-term Debt [Member]

Unsecured Debt [Member]

Unsecured Debt [Member]

Fixed rate debt offering [Member]

Fixed Rate Mortgage Loans [Member]

Unsecured Debt [Member]

Unsecured Debt [Member]

Term Loan [Member]

Term Loan [Member]

Fixed Rate Mortgage Loans [Member]

Fixed rate debt offering [Member]

Fixed rate debt offering [Member]

2.196 Fixed rate with interest rate swap LIBOR 1.5% Maturing 10/16/20 [Member]

3.78% maturing 9/1/24 [Member]

3.41% maturing 10/5/24 [Member]

Fairfield Portfolio [Member]

Shops at Mira Vista [Member]

Unsecured Debt [Member]

Unsecured Debt [Member]

Variable Rate Mortgage Loans [Member]

Fixed Rate Mortgage Loans [Member]

Fixed Rate Mortgage Loans [Member]

Various rates 5%-6%, maturing 6/1/15-9/1/17 [Member]

eight percent maturing March 1, 2032 [Member]

Fixed Rate Mortgage Loans [Member]

Fixed Rate Mortgage Loans [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Document Period End Date

30-Sep-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mortgage loans assumed for the acquisition of real estate, net of premiums

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$78,049,000

$0

'

'

'

'

'

'

'

'

'

'

'

'

$77,700,000

$319,000

'

'

'

'

Total notes payable

'

'

1,948,243,000

1,779,697,000

521,719,000

444,245,000

29,125,000

37,100,000

1,397,399,000

1,298,352,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50,666,000

500,178,000

1,472,399,000

[1]

2,023,243,000

Total credit facilities

'

'

'

'

'

'

'

'

'

'

75,000,000

75,000,000

75,000,000

75,000,000

'

'

'

'

'

'

'

75,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Remaining Borrowing Capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

90,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Expiration Date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

27-Jun-19

'

'

'

'

'

'

'

'

'

'

'

'

'

Long Term Line of Credit LIBOR spread

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.15%

'

'

'

'

'

'

'

'

'

'

'

'

Long Term Line of Credit Undrawn fee

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.20%

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from Construction Loans Payable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000,000

'

'

'

'

'

'

'

'

Total debt outstanding

2,023,243,000

1,854,697,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

165,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Debt repaid

'

'

'

'

'

'

'

'

'

'

'

'

'

'

150,000,000

0

150,000,000

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Interest Rate, Stated Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4.95%

[1]

'

'

3.75%

'

'

'

3.78%

[1]

3.41%

[1]

'

'

'

'

'

'

'

'

'

Debt Instrument, Maturity Date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15-Jun-24

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Initiation Date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

27-Jun-14

'

'

'

'

'

'

'

'

'

'

'

'

'

Repayments of Debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,600,000

[1]

'

'

'

'

6,900,000

[1]

'

'

'

'

'

'

'

'

'

'

'

Document Fiscal Year Focus

'2014

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Issuance Date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

26-May-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Face Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

250,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maturities of Long-term Debt [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2014

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,970,000

0

0

[1]

1,970,000

2015

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,618,000

75,937,000

350,000,000

[1]

432,555,000

2016

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,135,000

41,442,000

0

[1]

47,577,000

2017

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,399,000

116,098,000

400,000,000

[1]

521,497,000

2018

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,453,000

57,358,000

0

[1]

61,811,000

Beyond 5 Years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

26,091,000

201,324,000

725,000,000

[1]

952,415,000

Unamortized debt (discounts) premiums, net

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

8,019,000

-2,601,000

[1]

5,418,000

Long-term Debt, Amount Outstanding

'

'

1,948,243,000

1,779,697,000

521,719,000

444,245,000

29,125,000

37,100,000

1,397,399,000

1,298,352,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50,666,000

500,178,000

1,472,399,000

[1]

2,023,243,000

Proceeds from Issuance of Debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$10,000,000

$10,000,000

'

'

'

'

'

'

[1]

Includes unsecured public debt and unsecured credit facilities.

Derivatives_Details

Derivatives (Details) (USD $)

3 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Dec. 31, 2013

26-May-14

Sep. 30, 2014

Sep. 30, 2014

Assets [Member]

.76% Derivative [Member]

.76% Derivative [Member]

Derivative @ 2.196% 28.1K [Member]

Derivative @ 2.196% 28.1K [Member]

Derivative B @ 2.479% 50K [Member] [Member]

Derivative B @ 2.479% 50K [Member] [Member]

Derivative @ 2.873% 35K [Member]

Derivative @ 2.873% 35K [Member]

Derivative @ 2.864% 60K [Member]

Derivative @ 2.864% 60K [Member]

Derivative @ 2.087% 75K [Member]

Derivative @ 2.087% 75K [Member]

Derivative @ 2.088% 50K [Member]

Derivative @ 2.088% 50K [Member]

Derivative @ 2.479% 75K [Member]

Derivative @ 2.479% 75K [Member]

Derivative A @ 2.479% 50K [Member]

Derivative A @ 2.479% 50K [Member]

Derivative @ 3.41% 45K [Member] [Member]

Derivative @ 3.41% 45K [Member] [Member]

Derivative @ 3.488% 20K [Member]

Derivative @ 3.488% 20K [Member]

Derivative @ 3.48% 100K [Member]

Derivative @ 3.48% 100K [Member]

Swap [Member]

Derivative @ 3.48% 100K 2 [Member]

Derivative @ 3.48% 100K 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

3.75% unsecured maturing 6/15/24 [Member]

2015 Debt Issuance [Member]

2017 Debt issuance [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Unsecured Debt [Member]

Derivative [Member]

Derivative [Member]

.76% Derivative [Member]

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Instruments, Gain (Loss) [Table Text Block]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivatives in FASB

Amount of Gain (Loss)

Location and Amount of Gain

Location and Amount of Gain or

ASC Topic 815 Cash

Recognized in OCI on

(Loss) Reclassified

(Loss) Recognized in

Flow Hedging

Derivative (Effective

from Accumulated

Income on  Derivative

Relationships:

Portion)

OCI into Income

(Ineffective Portion and

(Effective Portion)

Amount Excluded from

Effectiveness Testing)

Three months ended September 30,

Three months ended September 30,

Three months ended September 30,

2014

2013

2014

2013

2014

2013

Interest rate swaps

$

(3,651

)

521

Interest

$

(2,217

)

(2,366

)

Other expenses

$

—

—

expense

Derivatives in FASB

Amount of Gain (Loss)

Location and Amount of Gain

Location and Amount of Gain or

ASC Topic 815 Cash

Recognized in OCI on

(Loss) Reclassified

(Loss) Recognized in

Flow Hedging

Derivative (Effective

from Accumulated

Income on  Derivative

Relationships:

Portion)

OCI into Income

(Ineffective Portion and

(Effective Portion)

Amount Excluded from

Effectiveness Testing)

Nine months ended September 30,

Nine months ended September 30,

Nine months ended September 30,

2014

2013

2014

2013

2014

2013

Interest rate swaps

$

(28,603

)

22,225

Interest

$

(6,966

)

(7,098

)

Other expenses

$

—

(3

)

expense

Document Period End Date

'

'

30-Sep-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Face Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$250,000,000

'

'

Debt Instrument, Interest Rate, Stated Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.75%

'

'

Net cash proceeds from settlement of derivatives

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,600,000

'

'

Debt Instrument, Interest Rate, Effective Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.00%

'

'

Document Fiscal Year Focus

'

'

'2014

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative, Inception Date

'

'

'

'

'

1-Oct-11

'

16-Oct-13

'

1-Aug-15

'

15-Apr-14

'

15-Apr-14

'

15-Apr-14

'

15-Apr-14

'

1-Aug-15

'

1-Aug-15

'

1-Aug-15

'

15-Jun-17

'

15-Jun-17

'

'

15-Jun-17

'

'

'

'

'

'

'

Derivative, Maturity Date

'

'

'

'

'

1-Sep-14

'

16-Oct-20

'

1-Aug-25

'

15-Apr-24

'

15-Apr-24

'

15-Apr-24

'

15-Apr-24

'

1-Aug-25

'

1-Aug-25

'

1-Aug-25

'

15-Jun-27

'

15-Jun-27

'

'

15-Jun-27

'

'

'

'

'

'

'

Derivative, Early Termination Date

'

'

'

'

'

'

'

'

'

1-Feb-16

[1]

'

15-Oct-14

[1]

'

15-Oct-14

[1]

'

15-Oct-14

[1]

'

15-Oct-14

[1]

'

1-Feb-16

[1]

'

1-Feb-16

[1]

'

1-Feb-16

[1]

'

15-Dec-17

[1]

'

15-Dec-17

[1]

'

'

15-Dec-17

[1]

'

'

'

'

'

'

'

Derivative, Notional Amount

'

'

'

'

220,000,000

9,000,000

'

28,100,000

'

50,000,000

'

35,000,000

'

60,000,000

'

75,000,000

'

50,000,000

'

75,000,000

'

50,000,000

'

45,000,000

'

20,000,000

'

100,000,000

'

'

100,000,000

'

'

'

'

'

'

'

Derivative, Description of Variable Rate Basis

'

'

'

'

'

'1 Month LIBOR

'

'1 Month LIBOR

'

'3 Month LIBOR

'

'3 Month LIBOR

'

'3 Month LIBOR

'

'3 Month LIBOR

'

'3 Month LIBOR

'

'3 Month LIBOR

'

'3 Month LIBOR

'

'3 Month LIBOR

'

'3 Month LIBOR

'

'3 Month LIBOR

'

'

'3 Month LIBOR

'

'

'

'

'

'

'

Derivative, Fixed Interest Rate

'

'

'

'

'

0.76%

'

2.20%

'

2.48%

'

2.87%

'

2.86%

'

2.09%

'

2.09%

'

2.48%

'

2.48%

'

3.41%

'

3.49%

'

3.48%

'

'

3.48%

'

'

'

'

'

'

'

Derivative, Fixed Interest Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.67%

3.48%

Derivative Asset, Fair Value, Gross Asset

'

'

'

'

'

0

[2]

0

[2]

0

[2]

-82,000

[2]

-1,973,000

[2]

-5,658,000

[2]

0

[2]

-1,036,000

[2]

0

[2]

-1,821,000

[2]

0

[2]

-7,476,000

[2]

0

[2]

-4,978,000

[2]

-2,959,000

[2]

-8,516,000

[2]

-1,973,000

[2]

-5,670,000

[2]

0

[2]

0

[2]

0

[2]

0

[2]

0

[2]

0

[2]

'

0

[2]

0

[2]

-6,905,000

[2]

-35,237,000

[2]

'

'

'

'

Derivative Liability, Fair Value, Gross Liability

'

'

'

'

'

0

[2]

'

-395,000

[2]

0

[2]

0

[2]

0

[2]

0

[2]

0

[2]

0

[2]

0

[2]

0

[2]

0

[2]

0

[2]

0

[2]

0

[2]

0

[2]

0

[2]

0

[2]

-1,929,000

[2]

0

[2]

-204,000

[2]

0

[2]

-973,000

[2]

0

[2]

'

-982,000

[2]

0

[2]

4,483,000

[2]

34,000

[2]

34,000

[2]

'

'

'

Effective portion of change in fair value of derivative instruments

-3,651,000

521,000

-28,603,000

22,225,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount reclassified from accumulated other comprehensive loss

-2,217,000

-2,366,000

-6,966,000

-7,098,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net

0

0

0

-3,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months

'

'

$8,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$8,200,000

'

'

'

'

'

'

'

'

[1]

Represents the date specified in the agreement for either optional or mandatory early termination which will result in cash settlement.

[2]

The Company issued $250 million of 3.75%, fixed rate ten year unsecured bonds in May 2014. Prior to issuing the bonds, the Company locked in the ten year treasury rate using forward starting interest rate swaps to mitigate the risk of interest rates rising. In connection with the issuance of the new bonds, the Company terminated and settled these swaps, resulting in net cash proceeds of $4.6 million. These proceeds will offset bond interest expense over the life of the bonds, resulting in a lower effective interest rate of 3.59%.

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Notes receivable	12,132	11,960
Notes payable	1,948,243	1,779,697
Unsecured credit facilities	75,000	75,000
Minimum [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value Inputs, Long-term Revenue Growth Rate	'	0.00%
Fair Value Inputs, Discount Rate	'	9.00%
Minimum [Member] | Overall cap rate [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value Inputs, Cap Rate	'	8.00%
Minimum [Member] | Terminal cap rate [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value Inputs, Cap Rate	'	8.50%
Estimate of Fair Value Measurement [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Trading securities held in trust	27,365	26,681
Available-for-sale Securities	19,159	'
Interest rate derivative	6,905	35,237
Total	53,429	61,918
Derivative instruments, at fair value	-4,483	-34
Estimate of Fair Value Measurement [Member] | Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Long-Lived Assets	1,597	4,686
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Trading securities held in trust	27,365	26,681
Available-for-sale Securities	19,159	'
Interest rate derivative	0	0
Total	46,524	26,681
Derivative instruments, at fair value	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Long-Lived Assets	0	0
Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Notes Payable, Fair Value	2,116,000	1,936,400
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Trading securities held in trust	0	0
Available-for-sale Securities	0	'
Interest rate derivative	6,905	35,237
Total	6,905	35,237
Derivative instruments, at fair value	-4,483	-34
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Long-Lived Assets	0	0
Fair Value, Inputs, Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Notes Receivable, Fair Value	11,953	11,600
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Trading securities held in trust	0	0
Available-for-sale Securities	0	'
Interest rate derivative	0	0
Total	0	0
Derivative instruments, at fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Long-Lived Assets	1,597	4,686
Unsecured Credit Facilities [Member] | Minimum [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Risk Free Interest Rate	1.30%	1.40%
Unsecured Credit Facilities [Member] | Maximum [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Risk Free Interest Rate	1.30%	1.40%
Unsecured Credit Facilities [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Unsecured credit facilities, Fair Value	75,000	75,400
Notes Payable, Other Payables [Member] | Minimum [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Risk Free Interest Rate	0.90%	3.00%
Notes Payable, Other Payables [Member] | Maximum [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Risk Free Interest Rate	3.80%	3.50%
Notes Receivable [Member] | Minimum [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Risk Free Interest Rate	7.40%	7.80%
Notes Receivable [Member] | Maximum [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Risk Free Interest Rate	7.40%	7.80%
Long Lived Assets Held And Used [Member] | Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Option, Changes in Fair Value, Gain (Loss)	225	6,000
Land [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Number of impaired land parcels	3	'

Equity_and_Capital_Equity_and_

Equity and Capital Equity and Capital - Common Stock (Details) (USD $)

3 Months Ended

9 Months Ended

Share data in Thousands, except Per Share data, unless otherwise specified

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Aug. 10, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2013

Dec. 31, 2012

Maximum [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Loss on Settlement of Derivative Instruments [Member]

Loss on Settlement of Derivative Instruments [Member]

Loss on Settlement of Derivative Instruments [Member]

Loss on Settlement of Derivative Instruments [Member]

Fair Value of Derivative Instruments [Member]

Fair Value of Derivative Instruments [Member]

Fair Value of Derivative Instruments [Member]

Fair Value of Derivative Instruments [Member]

Class of Stock [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Document Fiscal Year Focus

'

'

'2014

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount reclassified from accumulated other comprehensive loss

($2,217,000)

($2,366,000)

($6,966,000)

($7,098,000)

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares issued

'

30

872

1,899

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated other comprehensive loss

'

'

'

'

'

-33,963,000

-17,404,000

-28,430,000

-57,715,000

-45,914,000

-52,542,000

-54,905,000

-61,991,000

7,150,000

35,138,000

26,475,000

4,276,000

Equity Issuances, Amount Available for Issuance

150,000,000

'

150,000,000

'

200,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Weighted Average Price Per Share

'

$52.28

$57.35

$53.35

'

'

'

'

'

'

'

'

'

'

'

'

'

Net proceeds from common stock issuance

'

1,568,000

49,995,000

101,342,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments for Commissions

'

24,000

695,000

1,520,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments of Stock Issuance Costs

'

'

$0

$69,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity_and_Capital_Accumulated

Equity and Capital - Accumulated Other Comprehensive Income (Loss) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income Loss [Line Items]	'	'	'	'
Document Fiscal Year Focus	'	'	'2014	'
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	($2,217)	($2,366)	($6,966)	($7,098)
Loss on Settlement of Derivative Instruments [Member]	'	'	'	'
Accumulated Other Comprehensive Income Loss [Roll Forward]	'	'	'	'
Beginning balance	'	'	-52,542	-61,991
Net gain (loss) on cash flow derivative instruments	0	0	0	0
Amounts reclassified from other comprehensive income	'	'	6,628	7,086
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	'	'	0	0
Current period other comprehensive income, net	'	'	6,628	7,086
Ending balance	-45,914	-54,905	-45,914	-54,905
Fair Value of Derivative Instruments [Member]	'	'	'	'
Accumulated Other Comprehensive Income Loss [Roll Forward]	'	'	'	'
Beginning balance	'	'	35,138	4,276
Net gain (loss) on cash flow derivative instruments	-28,326	22,187	-28,326	22,187
Amounts reclassified from other comprehensive income	'	'	338	12
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	'	'	0	0
Current period other comprehensive income, net	'	'	-27,988	22,199
Ending balance	7,150	26,475	7,150	26,475
Unrealized Gain (Loss) on Available-for-Sale Securities [Member]	'	'	'	'
Accumulated Other Comprehensive Income Loss [Roll Forward]	'	'	'	'
Beginning balance	'	'	0	0
Net gain (loss) on cash flow derivative instruments	0	0	0	0
Amounts reclassified from other comprehensive income	'	'	0	0
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	'	'	4,801	0
Current period other comprehensive income, net	'	'	4,801	0
Ending balance	4,801	0	4,801	0
Accumulated Other Comprehensive Income (Loss) [Member]	'	'	'	'
Accumulated Other Comprehensive Income Loss [Roll Forward]	'	'	'	'
Beginning balance	'	'	-17,404	-57,715
Net gain (loss) on cash flow derivative instruments	-28,326	22,187	-28,326	22,187
Amounts reclassified from other comprehensive income	'	'	6,966	7,098
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	'	'	4,801	0
Current period other comprehensive income, net	'	'	-16,559	29,285
Ending balance	-33,963	-28,430	-33,963	-28,430
Partnership Interest [Member]	'	'	'	'
Accumulated Other Comprehensive Income Loss [Roll Forward]	'	'	'	'
Beginning balance	'	'	-17,404	'
Current period other comprehensive income, net	2,504	2,896	-16,696	29,348
Ending balance	-33,963	'	-33,963	'
Partnership Interest [Member] | General Partner [Member]	'	'	'	'
Accumulated Other Comprehensive Income Loss [Roll Forward]	'	'	'	'
Current period other comprehensive income, net	'	'	0	0
Partnership Interest [Member] | Accumulated Other Comprehensive Income (Loss) [Member]	'	'	'	'
Accumulated Other Comprehensive Income Loss [Roll Forward]	'	'	'	'
Current period other comprehensive income, net	'	'	($16,559)	$29,285

StockBased_Compensation_Detail

Stock-Based Compensation (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'	'
Capitalized stock-based compensation	($615)	[1]	($620)	[1]	($2,026)	($1,567)
Stock-based compensation, net of capitalization	2,350		3,067		6,885	9,227
Restricted Stock [Member]	'		'		'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'	'
Allocated Share-based Compensation Expense	2,915		3,622		8,747	10,600
Shares granted	'		'		256,941	'
Weighted average grant date fair value (in dollars per share)	'		'		$48.14	'
Director [Member]	'		'		'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'	'
Allocated Share-based Compensation Expense	$50	[2]	$65	[2]	$164	$194
[1]	Includes compensation expense specifically identifiable to development and leasing activities.
[2]	Includes amortization of the grant date fair value of restricted stock awards over the respective vesting periods.

NonQualified_Deferred_Compensa1

Non-Qualified Deferred Compensation Plan (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Non Qualified Deferred Compensation Plan [Abstract]	'	'
Deferred compensation liability included in accounts payable and other liabilities	$26.80	$26.10

Earnings_per_Share_and_Unit_De

Earnings per Share and Unit (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]	'	'	'	'
Document Fiscal Year Focus	'	'	'2014	'
Document Period End Date	'	'	30-Sep-14	'
Earnings Per Share [Abstract]	'	'	'	'
Gain on sale of real estate, net of tax	$27,558	$16,108	$29,598	$29,235
Income per common unit - diluted	'	'	'	'
Weighted Average Limited Partnership Units Outstanding, Basic	158,920	167,649	159,229	173,946
Parent Company [Member]	'	'	'	'
Earnings Per Share [Abstract]	'	'	'	'
Income from continuing operations	25,882	23,016	80,061	63,170
Gain on sale of real estate, net of tax	27,558	56	29,598	1,773
Less: income (loss) attributable to noncontrolling interests	232	367	1,048	990
Income from continuing operations attributable to the Company	53,208	22,705	108,611	63,953
Preferred stock dividends	-5,266	-5,266	-15,797	-15,797
Less: dividends paid on unvested restricted stock	149	148	448	445
Net income attributable to common stockholders	47,793	34,850	92,366	81,971
Add: dividends paid on Treasury Method restricted stock	-24	-15	50	55
Net income for common stock unit/holders - diluted	47,817	34,865	92,416	82,026
Income from discontinued operations	0	17,592	0	34,325
Less: income from discontinued operations attributable to noncontrolling interests	0	33	0	65
Income from discontinued operations attributable to the Company	0	17,559	0	34,260
Weighted average common units outstanding for basic EPU (in shares)	92,345,000	91,985,000	92,071,000	91,147,000
Incremental units to be issued under unvested restricted stock (in shares)	51,000	33,000	36,000	40,000
Incremental Common Shares Attributable to Dilutive Effect of Equity Forward Agreements	'	'	0	0
Weighted average common units outstanding for diluted EPU (in shares)	92,396,000	92,018,000	92,107,000	91,187,000
Income per common share/unit - basic:	'	'	'	'
Continuing operations (in dollars per share)	$0.52	$0.19	$1	$0.52
Discontinued operations (in dollars per share)	$0	$0.19	$0	$0.38
Net income attributable to common stockholders (in dollars per share)	$0.52	$0.38	$1	$0.90
Income per common share/unit - diluted:	'	'	'	'
Continuing operations (in dollars per share)	$0.52	$0.19	$1	$0.52
Discontinued operations (in dollars per share)	$0	$0.19	$0	$0.38
Net income attributable to common stockholders (in dollars per share)	$0.52	$0.38	$1	$0.90
Partnership Interest [Member]	'	'	'	'
Earnings Per Share [Abstract]	'	'	'	'
Income from continuing operations	25,882	23,016	80,061	63,170
Gain on sale of real estate, net of tax	27,558	56	29,598	1,773
Income from continuing operations attributable to the Company	53,298	22,778	108,796	64,136
Less: dividends paid on unvested restricted stock	149	148	448	445
Net income attributable to common stockholders	47,883	34,923	92,551	82,154
Add: dividends paid on Treasury Method restricted stock	-24	-15	-50	-55
Net income for common stock unit/holders - diluted	47,907	34,938	92,601	82,209
Income from discontinued operations	0	17,592	0	34,325
Less: income from discontinued operations attributable to noncontrolling interests	'	33	'	65
Income from discontinued operations attributable to the Company	0	17,559	0	34,260
Less: preferred unit distributions	5,266	5,266	15,797	15,797
Weighted average common units outstanding for basic EPU (in shares)	92,505,000	92,153,000	92,231,000	91,321,000
Incremental units to be issued under unvested restricted stock (in shares)	51,000	33,000	36,000	40,000
Weighted average common units outstanding for diluted EPU (in shares)	92,556,000	92,186,000	92,267,000	91,361,000
Income per common unit - basic	'	'	'	'
Continuing operations (in dollars per share)	$0.52	$0.19	$1	$0.52
Discontinued operations (in dollars per share)	$0	$0.19	$0	$0.38
Net income attributable to common unit holders (in dollars per share)	$0.52	$0.38	$1	$0.90
Income per common unit - diluted	'	'	'	'
Continuing operations (in dollars per share)	$0.52	$0.19	$1	$0.52
Discontinued operations (in dollars per share)	$0	$0.19	$0	$0.38
Net income attributable to common unit holders (in dollars per share)	$0.52	$0.38	$1	$0.90
Continuing Operations [Member] | Parent Company [Member]	'	'	'	'
Earnings Per Share [Abstract]	'	'	'	'
Net income attributable to common stockholders	47,793	17,291	92,366	47,711
Net income for common stock unit/holders - diluted	47,817	17,306	92,416	47,766
Continuing Operations [Member] | Partnership Interest [Member]	'	'	'	'
Earnings Per Share [Abstract]	'	'	'	'
Less: income (loss) attributable to noncontrolling interests	142	294	863	807
Net income attributable to common stockholders	47,883	17,364	92,551	47,894
Net income for common stock unit/holders - diluted	$47,907	$17,379	$92,601	$47,949

Commitments_and_Contingencies_

Commitments and Contingencies, Letters of Credit (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'	'
Line of Credit Facility, Maximum Borrowing Capacity	$80,000,000	'
Letters of Credit Outstanding, Amount	$5,900,000	$19,300,000

Availableforsale_Securities_De

Available-for-sale Securities (Details) (USD $)	9 Months Ended
	Sep. 30, 2014
Schedule of Available-for-sale Securities [Line Items]	'
Document Period End Date	30-Sep-14
Available-for-sale Securities [Member]	'
Schedule of Available-for-sale Securities [Line Items]	'
Available-for-sale Securities, Amortized Cost Basis	14,350,000
Available-for-sale Securities, Gross Unrealized Gain	4,809,000
Available-for-sale Securities, Gross Unrealized Loss	0
Available-for-sale Securities	19,159,000