Tanger (SKT) 10-K24 Feb 152014 FY Annual reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
Document and Entity Information (USD $)	Dec. 31, 2014	Feb. 01, 2015	Jun. 30, 2014
Document Information [Line Items]
Entity Registrant Name	TANGER FACTORY OUTLET CENTERS INC
Entity Central Index Key	899715
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	Yes
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Document Type	10-K
Document Period End Date	31-Dec-14
Amendment Flag	FALSE
Entity Common Stock, Shares Outstanding		95,510,381
Entity Public Float			$3,421,910,003

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Rental property
Rental property held for sale	$46,005,000
Tanger Factory Outlet Centers, Inc [Member]
Rental property
Land	217,994,000	230,415,000
Buildings, improvements and fixtures	1,947,083,000	2,009,971,000
Construction in progress	98,526,000	9,433,000
Real Estate Investment Property, at Cost, Total	2,263,603,000	2,249,819,000
Accumulated depreciation	-662,236,000	-654,631,000
Total rental property, net	1,601,367,000	1,595,188,000
Cash and cash equivalents	16,875,000	15,241,000	10,335,000	7,894,000
Rental property held for sale	46,005,000	0
Investments in unconsolidated joint ventures	208,050,000	140,214,000
Deferred lease costs and other intangibles, net	140,883,000	163,581,000
Deferred debt origination costs, net	12,126,000	10,818,000
Prepaids and other assets	72,354,000	81,414,000
Total assets	2,097,660,000	2,006,456,000
Debt
Senior, unsecured notes (net of discount of $6,426 and $5,752, respectively)	793,574,000	794,248,000
Unsecured term loans (net of discount of $241 and $396, respectively)	267,259,000	267,104,000
Mortgages payable (including premiums of $3,031 and $3,799, respectively)	271,361,000	250,497,000
Unsecured lines of credit	111,000,000	16,200,000
Total debt	1,443,194,000	1,328,049,000
Accounts payable and accrued expenses	69,558,000	59,462,000
Deferred financing obligation	28,388,000	28,388,000
Other liabilities	32,634,000	32,962,000
Total liabilities	1,573,774,000	1,448,861,000
Commitments and contingencies	0	0
Common shares, $.01 par value, 300,000,000 authorized, 95,509,781 and 94,505,685 shares issued and outstanding at December 31, 2014 and 2013, respectively	955,000	945,000
Paid in capital	791,566,000	788,984,000
Accumulated distributions in excess of net income	-281,679,000	-265,242,000
Accumulated other comprehensive loss	-14,023,000	-2,428,000
Equity attributable to Tanger Factory Outlet Centers, Inc.	496,819,000	522,259,000
Noncontrolling interests in Operating Partnership	26,417,000	28,432,000
Noncontrolling interests in other consolidated partnerships	650,000	6,904,000
Total equity	523,886,000	557,595,000	513,875,000	528,432,000
Total liabilities and equity	2,097,660,000	2,006,456,000
Tanger Properties Limited Partnership [Member]
Rental property
Land	217,994,000	230,415,000
Buildings, improvements and fixtures	1,947,083,000	2,009,971,000
Construction in progress	98,526,000	9,433,000
Real Estate Investment Property, at Cost, Total	2,263,603,000	2,249,819,000
Accumulated depreciation	-662,236,000	-654,631,000
Total rental property, net	1,601,367,000	1,595,188,000
Cash and cash equivalents	15,806,000	14,984,000	10,295,000	7,866,000
Rental property held for sale	46,005,000	0
Investments in unconsolidated joint ventures	208,050,000	140,214,000
Deferred lease costs and other intangibles, net	140,883,000	163,581,000
Deferred debt origination costs, net	12,126,000	10,818,000
Prepaids and other assets	71,848,000	81,165,000
Total assets	2,096,085,000	2,005,950,000
Debt
Senior, unsecured notes (net of discount of $6,426 and $5,752, respectively)	793,574,000	794,248,000
Unsecured term loans (net of discount of $241 and $396, respectively)	267,259,000	267,104,000
Mortgages payable (including premiums of $3,031 and $3,799, respectively)	271,361,000	250,497,000
Unsecured lines of credit	111,000,000	16,200,000
Total debt	1,443,194,000	1,328,049,000
Accounts payable and accrued expenses	67,983,000	58,956,000
Deferred financing obligation	28,388,000	28,388,000
Other liabilities	32,634,000	32,962,000
Total liabilities	1,572,199,000	1,448,355,000
Commitments and contingencies	0	0
General partner, 1,000,000 units outstanding at December 31, 2014 and 2013	4,828,000	4,988,000
Limited partners, 5,078,406 and 5,145,012 Class A units and 94,509,781 and 93,505,685 Class B units outstanding at December 31, 2014 and 2013, respectively	533,199,000	548,424,000
Accumulated other comprehensive loss	-14,791,000	-2,721,000	1,107,000	1,463,000
Total partners' equity	523,236,000	550,691,000
Noncontrolling interests in other consolidated partnerships	650,000	6,904,000
Total equity	523,886,000	557,595,000	513,875,000	528,432,000
Total liabilities and equity	$2,096,085,000	$2,005,950,000

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Tanger Factory Outlet Centers, Inc [Member]
Common shares, par value (in dollars per share)	0.01	0.01
Common shares, authorized	300,000,000	300,000,000
Common shares, issued	95,509,781	94,505,685
Common shares, outstanding	95,509,781	94,505,685
Tanger Factory Outlet Centers, Inc [Member] \| Senior Notes [Member]
Discount (Premium), Net	6,426	5,752
Tanger Factory Outlet Centers, Inc [Member] \| Unsecured Term Loan [Member]
Discount (Premium), Net	241	396
Tanger Factory Outlet Centers, Inc [Member] \| Mortgages [Member]
Discount (Premium), Net	-3,031	-3,799
Tanger Properties Limited Partnership [Member]
Discount (Premium), Net	3,636	2,349
General partnership units	1,000,000	1,000,000
Tanger Properties Limited Partnership [Member] \| Senior Notes [Member]
Discount (Premium), Net	6,426	5,752
Tanger Properties Limited Partnership [Member] \| Unsecured Term Loan [Member]
Discount (Premium), Net	241	396
Tanger Properties Limited Partnership [Member] \| Mortgages [Member]
Discount (Premium), Net	-3,031	-3,799
Class A Limited Partnership Units [Member] \| Tanger Properties Limited Partnership [Member]
Limited partnership units	5,078,406	5,145,012
Class B Limited Partnership Units [Member] \| Tanger Properties Limited Partnership [Member]
Limited partnership units	94,509,781	93,505,685

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
REVENUES
Management, leasing and other services	$3,591	$3,080	$2,007
OTHER INCOME/(EXPENSE)
Gain on sale of real estate	7,513
Tanger Factory Outlet Centers, Inc [Member]
REVENUES
Base rentals	274,480	253,402	235,233
Percentage rentals	10,307	11,251	11,172
Expense reimbursements	122,532	109,654	101,110
Management, leasing and other services	3,591	3,080	2,007
Other income	7,648	7,432	7,480
Total revenues	418,558	384,819	357,002
EXPENSES
Property operating	137,422	121,046	111,160
General and administrative	44,469	39,119	37,452
Acquisition costs	7	1,203	117
Abandoned development costs	2,365	0	0
Depreciation and amortization	102,432	95,746	98,683
Total expenses	286,695	257,114	247,412
Operating income	131,863	127,705	109,590
OTHER INCOME/(EXPENSE)
Interest expense	-57,931	-51,616	-49,814
Loss on early extinguishment of debt	-13,140	0	0
Gain on sale of real estate	7,513	0	0
Gain on previously held interest in acquired joint venture	0	26,002	0
Interest and other income (expense)	794	190	-5
Income before equity in earnings (losses) of unconsolidated joint ventures	69,099	102,281	59,771
Equity in earnings (losses) of unconsolidated joint ventures	9,053	11,040	-3,295
Net income (loss)	78,152	113,321	56,476
Noncontrolling interests in Operating Partnership	-4,037	-5,643	-3,267
Noncontrolling interests in other consolidated partnerships	-104	-121	19
Net income attributable to Tanger Factory Outlet Centers, Inc.	74,011	107,557	53,228
Basic earnings per common share
Net income (in dollars per share)	$0.77	$1.14	$0.57
Diluted earnings per common share
Net income (in dollars per share)	$0.77	$1.13	$0.57
Tanger Properties Limited Partnership [Member]
REVENUES
Base rentals	274,480	253,402	235,233
Percentage rentals	10,307	11,251	11,172
Expense reimbursements	122,532	109,654	101,110
Management, leasing and other services	3,591	3,080	2,007
Other income	7,648	7,432	7,480
Total revenues	418,558	384,819	357,002
EXPENSES
Property operating	137,422	121,046	111,160
General and administrative	44,469	39,119	37,452
Acquisition costs	7	1,203	117
Abandoned development costs	2,365	0	0
Depreciation and amortization	102,432	95,746	98,683
Total expenses	286,695	257,114	247,412
Operating income	131,863	127,705	109,590
OTHER INCOME/(EXPENSE)
Interest expense	-57,931	-51,616	-49,814
Loss on early extinguishment of debt	-13,140	0	0
Gain on sale of real estate	7,513	0	0
Gain on previously held interest in acquired joint venture	0	26,002	0
Interest and other income (expense)	794	190	-5
Income before equity in earnings (losses) of unconsolidated joint ventures	69,099	102,281	59,771
Equity in earnings (losses) of unconsolidated joint ventures	9,053	11,040	-3,295
Net income (loss)	78,152	113,321	56,476
Noncontrolling interests in consolidated partnerships	-104	-121	19
Net income available to partners	78,048	113,200	56,495
Net income available to limited partners	77,263	112,047	55,917
Net income available to general partner	$785	$1,153	$578
Basic earnings per common share
Net income (in dollars per share)	$0.77	$1.14	$0.57
Diluted earnings per common share
Net income (in dollars per share)	$0.77	$1.13	$0.57

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Tanger Factory Outlet Centers, Inc [Member]
Net income	$78,152	$113,321	$56,476
Reclassification adjustments for amounts recognized in net income	-741	-242	-351
Foreign currency translation adjustments	-10,042	-4,968	-5
Change in fair value of cash flow hedges	-1,287	1,382	0
Other comprehensive loss	-12,070	-3,828	-356
Comprehensive income	66,082	109,493	56,120
Comprehensive income attributable to noncontrolling interests	-3,666	-5,564	-3,227
Comprehensive income attributable to Tanger Factory Outlet Centers, Inc.	62,416	103,929	52,893
Tanger Properties Limited Partnership [Member]
Net income	78,152	113,321	56,476
Reclassification adjustments for amounts recognized in net income	-741	-242	-351
Foreign currency translation adjustments	-10,042	-4,968	-5
Change in fair value of cash flow hedges	-1,287	1,382	0
Other comprehensive loss	-12,070	-3,828	-356
Comprehensive income	66,082	109,493	56,120
Comprehensive income attributable to noncontrolling interests	-104	-121	19
Comprehensive income attributable to Tanger Factory Outlet Centers, Inc.	$65,978	$109,372	$56,139

CONSOLIDATED_STATEMENT_OF_SHAR

CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (USD $)		Tanger Factory Outlet Centers, Inc [Member]	Tanger Factory Outlet Centers, Inc [Member]	Tanger Factory Outlet Centers, Inc [Member]	Tanger Factory Outlet Centers, Inc [Member]	Tanger Factory Outlet Centers, Inc [Member]	Tanger Factory Outlet Centers, Inc [Member]	Tanger Factory Outlet Centers, Inc [Member]	Tanger Factory Outlet Centers, Inc [Member]	Tanger Properties Limited Partnership [Member]	Tanger Properties Limited Partnership [Member]	Tanger Properties Limited Partnership [Member]	Tanger Properties Limited Partnership [Member]	Tanger Properties Limited Partnership [Member]	Tanger Properties Limited Partnership [Member]
In Thousands, unless otherwise specified		Tanger Factory Outlet Centers, Inc [Member]	Total shareholders' equity [Member]	Common Stock [Member]	Paid in capital [Member]	Distributions in excess of earnings [Member]	Accumulated other comprehensive income (loss) [Member]	Noncontrolling interest in Operating Partnership [Member]	Noncontrolling interest in other consolidated partnerships [Member]	Tanger Properties Limited Partnership [Member]	Total shareholders' equity [Member]	General Partner [Member]	Limited partners [Member]	Accumulated other comprehensive income (loss) [Member]	Noncontrolling interest in other consolidated partnerships [Member]
Balance at Dec. 31, 2011										$528,432
Balance at Dec. 31, 2011											521,589	4,972	515,154	1,463	6,843
Balance at Dec. 31, 2011		528,432	460,562	867	720,073	-261,913	1,535	61,027	6,843
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		56,476	53,228			53,228		3,267	-19	56,476	56,495	578	55,917		-19
Other comprehensive income (loss)		-356	-335				-335	-21		-356	-356			-356
Compensation under Incentive Award Plan		10,676	10,676		10,676					10,676	10,676		10,676
Issuance of common shares upon exercise of options		481	481		481
Issuance of common units upon exercise of options										481	481		481
Issuance of restricted shares/units, net of forfeitures				6	-6
Adjustment for noncotrolling interest in Operating Partnership			34,910		34,910			-34,910
Adjustment for noncontrolling interests in other consolidated partnerships			-10		-10				10		-10		-10		10
Exchange of Operating Partnership units for common shares				68	-68
Common distributions										-81,834	-81,834	-830	-81,004
Common dividends		-76,903	-76,903			-76,903
Distributions to noncontrolling interests		-4,931						-4,931
Balance at Dec. 31, 2012										513,875
Balance at Dec. 31, 2012											507,041	4,720	501,214	1,107	6,834
Balance at Dec. 31, 2012		513,875	482,609	941	766,056	-285,588	1,200	24,432	6,834
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	[1]	16,229
Balance at Mar. 31, 2013
Balance at Dec. 31, 2012										513,875
Balance at Dec. 31, 2012											507,041	4,720	501,214	1,107	6,834
Balance at Dec. 31, 2012		513,875	482,609	941	766,056	-285,588	1,200	24,432	6,834
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		113,321	107,557		0	107,557		5,643	121	113,321	113,200	1,153	112,047		121
Other comprehensive income (loss)		-3,828	-3,628				-3,628	-200		-3,828	-3,828			-3,828
Compensation under Incentive Award Plan		11,743	11,743		11,743					11,743	11,743		11,743
Issuance of common shares upon exercise of options		635	635		635
Issuance of common units upon exercise of options										635	635		635
Issuance of Operating Partnership limited partner units		13,981						13,981		13,981	13,981		13,981
Issuance of restricted shares/units, net of forfeitures				3	-3
Adjustment for noncotrolling interest in Operating Partnership			11,130		11,130			-11,130
Adjustment for noncontrolling interests in other consolidated partnerships			-576		-576				576		-576		-576		576
Acquisition of noncontrolling interests in other consolidated partnerships		-525							-525	-525					-525
Exchange of Operating Partnership units for common shares				1	-1
Common distributions										-91,505	-91,505	-885	-90,620
Common dividends		-87,211	-87,211			-87,211
Distributions to noncontrolling interests		-4,396						-4,294	-102	-102					-102
Balance at Dec. 31, 2013										557,595
Balance at Dec. 31, 2013										550,691	550,691	4,988	548,424	-2,721	6,904
Balance at Dec. 31, 2013		557,595	522,259	945	788,984	-265,242	-2,428	28,432	6,904
Balance at Sep. 30, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	[1]	23,136
Balance at Dec. 31, 2013		557,595
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	[1]	15,440
Balance at Mar. 31, 2014
Balance at Dec. 31, 2013										557,595
Balance at Dec. 31, 2013										550,691	550,691	4,988	548,424	-2,721	6,904
Balance at Dec. 31, 2013		557,595	522,259	945	788,984	-265,242	-2,428	28,432	6,904
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		78,152	74,011			74,011		4,037	104	78,152	78,048	785	77,263		104
Other comprehensive income (loss)		-12,070	-11,595				-11,595	-475		-12,070	-12,070			-12,070
Compensation under Incentive Award Plan		15,459	15,459		15,459					15,459	15,459		15,459
Issuance of common shares upon exercise of options		903	903		903
Issuance of common units upon exercise of options										903	903		903
Issuance of restricted shares/units, net of forfeitures				13	-13
Withholding of 412,239 common units for employee income taxes		-15,520	-15,520	-4	-15,516					-15,520	-15,520		-15,520
Adjustment for noncotrolling interest in Operating Partnership			741		741			-741
Adjustment for noncontrolling interests in other consolidated partnerships		1,004	1,009		1,009				-5	1,004	1,009		1,009		-5
Acquisition of noncontrolling interests in other consolidated partnerships		-6,226							-6,226	-6,226					-6,226
Exchange of Operating Partnership units for common shares				1	-1
Common distributions										-95,284	-95,284	-945	-94,339
Common dividends		-90,448	-90,448			-90,448
Distributions to noncontrolling interests		-4,963						-4,836	-127	-127					-127
Balance at Dec. 31, 2014										523,886
Balance at Dec. 31, 2014										523,236	523,236	4,828	533,199	-14,791	650
Balance at Dec. 31, 2014		523,886	496,819	955	791,566	-281,679	-14,023	26,417	650
Balance at Sep. 30, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	[1],[2]	18,520
Balance at Dec. 31, 2014		$523,886

[1]	Quarterly amounts may not add to annual amounts due to the effect of rounding on a quarterly basis.
[2]	For the fourth quarter, net income includes a $7.5 million gain on the sale of our Lincoln City outlet center and a $13.1 million loss on early extinguishment of debt related to the early redemption of senior notes due November 2015.

CONSOLIDATED_STATEMENT_OF_SHAR1

CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Tanger Factory Outlet Centers, Inc [Member]
Common shares/units issued upon exercise of options, in shares/units	47,000	44,500	37,700
Issuance of limited partner units		450,576
Issuance of restricted shares, net of forfeitures (in shares)	1,302,729	332,373	566,000
Exchange of Operating Partnership units for common shares (in units)	66,606	67,428	6,730,028
Common shares issued in exchange for Operating Partnership units (in shares)	66,606	67,428	6,730,028
Common dividends per share (in dollars per share)	$0.95	$0.89	$0.83
Shares Paid for Tax Withholding for Share Based Compensation	412,239	0	0
Tanger Properties Limited Partnership [Member]
Common shares/units issued upon exercise of options, in shares/units	47,000	44,500	37,700
Issuance of limited partner units		450,576
Issuance of restricted shares, net of forfeitures (in shares)	1,302,729	332,373	566,000
Common distributions (in dollars per share)	0.945	0.885	0.83
Shares Paid for Tax Withholding for Share Based Compensation	412,239

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on sale of real estate	($7,513)
INVESTING ACTIVITIES:
Net proceeds on sale of real estate	38,993
Tanger Factory Outlet Centers, Inc [Member]
OPERATING ACTIVITIES:
Net income	78,152	113,321	56,476
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	102,432	95,746	98,683
Amortization of deferred financing costs	2,382	2,194	2,313
Abandoned development costs	2,365	0	0
Casualty gain	-486	0	0
Gain on sale of real estate	-7,513	0	0
Gain on previously held interest in acquired joint venture	0	-26,002	0
Equity in (earnings) losses of unconsolidated joint ventures	-9,053	-11,040	3,295
Equity-based compensation expense	14,750	11,376	10,676	[1]
Amortization of debt (premiums) and discounts, net	-601	-886	-1,007
Net amortization (accretion) of market rent rate adjustments	3,209	1,141	-348
Straight-line rent adjustments	-6,073	-5,529	-3,649
Payment of discount on extinguishment of debt	-913	0	0
Distributions of cumulative earnings from unconsolidated joint ventures	9,586	5,853	1,005
Changes in other asset and liabilities:
Other assets	4,160	-7,676	-5,557
Accounts payable and accrued expenses	-3,626	8,988	3,863
Net cash provided by operating activities	188,771	187,486	165,750
INVESTING ACTIVITIES:
Additions to rental property	-147,976	-47,436	-41,283
Acquisition of interest in unconsolidated joint venture, net of cash acquired	0	-11,271	0
Additions to investments in and notes receivable from unconsolidated joint ventures	-142,268	-150,854	-103,041
Net proceeds on sale of real estate	38,993	0	0
Proceeds from insurance reimbursements	1,964	0	0
Distributions in excess of cumulative earnings from unconsolidated joint ventures	65,336	47,149	1,471
Additions to non-real estate assets	-1,053	-7,768	0
Additions to deferred lease costs	-5,664	-4,046	-5,056
Net cash used in investing activities	-190,668	-174,226	-147,909
FINANCING ACTIVITIES:
Cash dividends paid	-90,448	-87,211	-76,903
Distributions to noncontrolling interests in Operating Partnership	-4,836	-4,294	-4,931
Proceeds from debt issuances	931,608	785,803	585,800
Repayments of debt	-815,690	-697,377	-517,271
Employee income taxes paid related to shares withheld upon vesting of equity awards	-15,520	0	0
Acquisition of noncontrolling interests in other consolidated partnerships	0	-525	0
Distributions to noncontrolling interests in other consolidated partnerships	-127	-102	0
Proceeds from tax increment financing	2,080	0	0
Additions to deferred financing costs	-3,913	-4,001	-2,591
Proceeds from exercise of options	903	635	481
Net cash provided (used in) by financing activities	4,057	-7,072	-15,415
Effect of foreign currency rate changes on cash and cash equivalents	-526	-1,282	15
Net increase in cash and cash equivalents	1,634	4,906	2,441
Cash and cash equivalents, beginning of year	15,241	10,335	7,894
Cash and cash equivalents, end of year	16,875	15,241	10,335
Tanger Properties Limited Partnership [Member]
OPERATING ACTIVITIES:
Net income	78,152	113,321	56,476
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	102,432	95,746	98,683
Amortization of deferred financing costs	2,382	2,194	2,313
Abandoned development costs	2,365	0	0
Casualty gain	-486	0	0
Gain on sale of real estate	-7,513	0	0
Gain on previously held interest in acquired joint venture	0	-26,002	0
Equity in (earnings) losses of unconsolidated joint ventures	-9,053	-11,040	3,295
Equity-based compensation expense	14,750	11,376	10,676
Amortization of debt (premiums) and discounts, net	-601	-886	-1,007
Net amortization (accretion) of market rent rate adjustments	3,209	1,141	-348
Straight-line rent adjustments	-6,073	-5,529	-3,649
Payment of discount on extinguishment of debt	-913	0	0
Distributions of cumulative earnings from unconsolidated joint ventures	9,586	5,853	1,005
Changes in other asset and liabilities:
Other assets	4,417	-7,861	-5,447
Accounts payable and accrued expenses	-4,695	8,956	3,741
Net cash provided by operating activities	187,959	187,269	165,738
INVESTING ACTIVITIES:
Additions to rental property	-147,976	-47,436	-41,283
Acquisition of interest in unconsolidated joint venture, net of cash acquired	0	-11,271	0
Additions to investments in and notes receivable from unconsolidated joint ventures	-142,268	-150,854	-103,041
Net proceeds on sale of real estate	38,993	0	0
Proceeds from insurance reimbursements	1,964	0	0
Distributions in excess of cumulative earnings from unconsolidated joint ventures	65,336	47,149	1,471
Additions to non-real estate assets	-1,053	-7,768	0
Additions to deferred lease costs	-5,664	-4,046	-5,056
Net cash used in investing activities	-190,668	-174,226	-147,909
FINANCING ACTIVITIES:
Cash dividends paid	-95,284	-91,505	-81,834
Proceeds from debt issuances	931,608	810,803	585,800
Repayments of debt	-815,690	-722,377	-517,271
Employee income taxes paid related to shares withheld upon vesting of equity awards	-15,520	0	0
Acquisition of noncontrolling interests in other consolidated partnerships	0	-525	0
Distributions to noncontrolling interests in other consolidated partnerships	-127	-102	0
Proceeds from tax increment financing	2,080	0	0
Additions to deferred financing costs	-3,913	-4,001	-2,591
Proceeds from exercise of options	903	635	481
Net cash provided (used in) by financing activities	4,057	-7,072	-15,415
Effect of foreign currency rate changes on cash and cash equivalents	-526	-1,282	15
Net increase in cash and cash equivalents	822	4,689	2,429
Cash and cash equivalents, beginning of year	14,984	10,295	7,866
Cash and cash equivalents, end of year	$15,806	$14,984	$10,295

[1]	For the year ended DecemberB 31, 2012, includes approximately $1.3 million of compensation expense related to 45,000 common shares that vested immediately upon grant related to the Employment Agreement described above.

Organization_of_the_Company

Organization of the Company	12 Months Ended
Organization of the Company	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization of the Company	Organization of the Company

	Tanger Factory Outlet Centers, Inc. and subsidiaries is one of the largest owners and operators of outlet centers in the United States and Canada. We are a fully-integrated, self-administered and self-managed real estate investment trust ("REIT") which, through our controlling interest in the Operating Partnership, focuses exclusively on developing, acquiring, owning, operating and managing outlet shopping centers. As of December 31, 2014, we owned and operated 36 outlet centers, with a total gross leasable area of approximately 11.3 million square feet. All references to gross leasable area, square feet, occupancy, stores and store brands contained in the notes to the consolidated financial statements are unaudited. These outlet centers were 98% occupied and contained over 2,400 stores, representing approximately 380 store brands. We also had partial ownership interests in 9 outlet centers totaling approximately 2.6 million square feet, including 4 outlet centers in Canada.

	Our outlet centers and other assets are held by, and all of our operations are conducted by, Tanger Properties Limited Partnership and subsidiaries. Accordingly, the descriptions of our business, employees and properties are also descriptions of the business, employees and properties of the Operating Partnership. Unless the context indicates otherwise, the term “Company” refers to Tanger Factory Outlet Centers, Inc. and subsidiaries and the term “Operating Partnership” refers to Tanger Properties Limited Partnership and subsidiaries. The terms “we”, “our” and “us” refer to the Company or the Company and the Operating Partnership together, as the text requires.

	The Company owns the majority of the units of partnership interest issued by the Operating Partnership through its two wholly-owned subsidiaries, Tanger GP Trust and Tanger LP Trust. Tanger GP Trust controls the Operating Partnership as its sole general partner. Tanger LP Trust holds a limited partnership interest. As of December 31, 2014, the Company, through its ownership of Tanger GP Trust and Tanger LP Trust, owned 95,509,781 units of the Operating Partnership and other limited partners (the "Non-Company LPs") collectively owned 5,078,406 Class A common limited partnership units. Each Class A common limited partnership unit held by the Non-Company LPs is exchangeable for one of the Company's common shares, subject to certain limitations to preserve the Company's status as a REIT. Class B common limited partnership units, which are held by Tanger LP Trust, are not exchangeable for common shares of the Company.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies

	Principles of Consolidation - The consolidated financial statements of the Company include its accounts and its consolidated subsidiaries, as well as the Operating Partnership and its consolidated subsidiaries. The consolidated financial statements of the Operating Partnership include its accounts and its consolidated subsidiaries. Intercompany balances and transactions have been eliminated in consolidation.

	We evaluate our real estate joint ventures in accordance with the Consolidation guidance of the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC"). As a result of our qualitative assessment, we concluded that our Westgate and Savannah joint ventures are Variable Interest Entities ("VIE") and none of our other joint ventures are VIEs. Westgate and Savannah are each considered a VIE because the voting rights are disproportionate to the economic interests.

	After making the determination that Westgate and Savannah are VIEs, we performed an assessment to determine if we would be considered the primary beneficiary and thus be required to consolidate the balance sheets and results of operations. This assessment was based upon whether we had the following:


	a.	The power to direct the activities of the VIE that most significantly impact the entity's economic performance


	b.	The obligation to absorb losses of the entity that could potentially be significant to the VIE or the right to receive benefits from the entity that could potentially be significant to the VIE

	The operating, development, leasing, and management agreements of Westgate and Savannah provide that the activities that most significantly impact the economic performance of the ventures require unanimous consent. Accordingly, we determined that we do not have the power to direct the significant activities that affect the economic performance of the ventures and therefore, have applied the equity method of accounting. Our investment in Westgate was approximately $14.3 million and in Savannah was approximately $46.5 million as of December 31, 2014. We are unable to estimate our maximum exposure to loss at this time because our guarantees are limited and based on the future operating performance of Westgate and Savannah.

	Noncontrolling interests - In the Company's consolidated financial statements, the “Noncontrolling interests in Operating Partnership” reflects the Non-Company LPs percentage ownership of the Operating Partnership's units. The noncontrolling interests in other consolidated partnerships consist of outside equity interests in partnerships not wholly-owned by the Company or the Operating Partnership that are consolidated with the financial results of the Company and Operating Partnership because the Operating Partnership exercises control over the entities that own the properties. Noncontrolling interests are initially recorded in the consolidated balance sheets at fair value based upon purchase price allocations. Income is allocated to the noncontrolling interests based on their respective ownership interest.

	Use of Estimates - The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Estimates are used in the calculations of impairment losses, costs capitalized to originate operating leases, costs incurred for the construction and development of properties, and the values of deferred lease costs and other intangibles related to the acquisition of properties. Actual results could differ from those estimates.

	Operating Segments - We focus exclusively on developing, acquiring, owning, operating, and managing outlet shopping centers. We aggregate the financial information of all outlet centers into one reportable operating segment because the outlet centers all have similar economic characteristics and provide similar products and services to similar types and classes of customers.

	Rental Property - Rental properties are recorded at cost less accumulated depreciation. Buildings, improvements and fixtures consist primarily of permanent buildings and improvements made to land such as infrastructure and costs incurred in providing rental space to tenants.

	The pre-construction stage of project development involves certain costs to secure land control and zoning and complete other initial tasks essential to the development of the project. These costs are transferred from other assets to construction in progress when the pre-construction tasks are completed. Costs of unsuccessful pre-construction efforts are charged to operations when the project is no longer probable.

	We also capitalize other costs incurred for the construction and development of properties, including interest, real estate taxes and salaries and related costs associated with employees directly involved. Capitalization of costs commences at the time the development of the property becomes probable and ceases when the property is substantially completed and ready for its intended use. We consider a construction project as substantially completed and ready for its intended use upon the completion of tenant improvements. We cease capitalization on the portion that is substantially completed and occupied or held available for occupancy, and capitalize only those costs associated with the portion under construction. The amount of salaries and related costs capitalized for the construction and development of properties, which during 2014, 2013 and 2012 amounted to $1.6 million, $2.2 million and $1.8 million, respectively, is based on our estimate of the amount of costs directly related to the construction or development of these assets.

	Interest costs are capitalized during periods of active construction for qualified expenditures based upon interest rates in place during the construction period until construction is substantially complete. This includes interest incurred on funds invested in or advanced to unconsolidated joint ventures with qualifying development activities. Interest costs capitalized during 2014, 2013 and 2012 amounted to approximately $5.1 million, $1.6 million and $1.2 million, respectively.

	Depreciation is computed on the straight-line basis over the estimated useful lives of the assets. We generally use estimated lives of 33 years for buildings and improvements, 15 years for land improvements and 7 years for equipment. Tenant finishing allowances are amortized over the life of the associated lease. Capitalized interest costs are amortized over lives which are consistent with the constructed assets. Expenditures for ordinary maintenance and repairs are charged to operations as incurred while significant renovations and improvements which improve and/or extend the useful life of the asset are capitalized and depreciated over their estimated useful life. Depreciation expense related to rental property included in net income for each of the years ended December 31, 2014, 2013 and 2012 was $80.1 million, $74.7 million and $73.7 million, respectively.

	In accordance with accounting guidance for business combinations, we allocate the purchase price of acquisitions based on the fair value of land, building, tenant improvements, debt and deferred lease costs and other intangibles, such as the value of leases with above or below market rents, origination costs associated with the in-place leases, the value of in-place leases and tenant relationships, if any. We depreciate the amount allocated to building, deferred lease costs and other intangible assets over their estimated useful lives, which range up to 33 years. The values of the above and below market leases are amortized and recorded as either an increase (in the case of below market leases) or a decrease (in the case of above market leases) to rental income over the remaining term of the associated lease. The values of below market leases that are considered to have renewal periods with below market rents are amortized over the remaining term of the associated lease plus the renewal periods when the renewal is deemed probable to occur. The value associated with in-place leases is amortized over the remaining lease term and tenant relationships is amortized over the expected term, which includes an estimated probability of the lease renewal. If a tenant terminates its lease prior to the contractual termination of the lease and no rental payments are being made on the lease, any unamortized balance of the related intangibles is written off. The tenant improvements and origination costs are amortized as an expense over the remaining life of the lease (or charged against earnings if the lease is terminated prior to its contractual expiration date). We assess fair value based on estimated cash flow projections that utilize appropriate discount and capitalization rates and available market information. These cash flow projections may be derived from various observable and unobservable inputs and assumptions. Also, we may utilize third-party valuation specialists. As a part of acquisition accounting, the amount by which the fair value of our previously held equity method investment exceeds the carrying book value is recorded as a gain on previously held interest in acquired joint venture. Direct costs to acquire existing outlet centers are expensed as incurred.

	Cash and Cash Equivalents - All highly liquid investments with an original maturity of three months or less at the date of purchase are considered to be cash equivalents. Cash balances at a limited number of banks may periodically exceed insurable amounts. We believe that we mitigate our risk by investing in or through major financial institutions. Recoverability of investments is dependent upon the performance of the issuer. At December 31, 2014 and 2013, respectively, we had cash equivalent investments in highly liquid money market accounts at major financial institutions of $671,000 and $670,000, respectively.

	Deferred Charges - Deferred charges includes deferred lease costs and other intangible assets consisting of fees and costs incurred to originate operating leases and are amortized over the expected lease term. Deferred lease costs capitalized, including amounts paid to third-party brokers and salaries and related costs of employees directly involved in originating leases, during 2014, 2013 and 2012 were approximately $6.2 million, $4.0 million and $5.1 million, respectively. Of the amounts capitalized during 2014, 2013 and 2012, approximately $5.1 million, $2.9 million, and $4.5 million, respectively, were related to salaries and related costs. The amount of salaries and related costs capitalized is based on our estimate of the time and amount of costs directly related to originating leases. Deferred lease costs and other intangible assets also include the value of leases and origination costs deemed to have been acquired in real estate acquisitions.

	Deferred financing costs include fees and costs incurred to obtain long-term financing and are amortized over the terms of the respective loans. Unamortized deferred financing costs are charged to expense when debt is retired before the maturity date.

	Captive Insurance - We have a wholly-owned captive insurance company that is responsible for losses up to certain deductible levels per occurrence for property damage (including wind damage from hurricanes) prior to third-party insurance coverage. Insurance losses are reflected in property operating expenses and include estimates of costs incurred, both reported and unreported.
	Impairment of Long-Lived Assets - Rental property held and used by us is reviewed for impairment in the event that facts and circumstances indicate the carrying amount of an asset may not be recoverable. In such an event, we compare the estimated future undiscounted cash flows associated with the asset to the asset's carrying amount, and if less, recognize an impairment loss in an amount by which the carrying amount exceeds its fair value. Fair value is determined using a market approach whereby we consider the prevailing market income capitalization rates and sales data for transactions involving similar assets. We recognized no impairment losses during the years ended December 31, 2014, 2013, and 2012, respectively. We believe there are no unrecorded impairment losses as of December 31, 2014, 2013 and 2012, respectively.

	Rental Property Held For Sale - Rental properties designated as held for sale are stated at the lower of their carrying value or their fair value less costs to sell. We classify rental property as held for sale when our Board of Directors approves the sale of the assets and it meets the requirements of current accounting guidance. Subsequent to this classification, no further depreciation is recorded on the assets.

	Impairment of Investments - On a periodic basis, we assess whether there are any indicators that the value of our investments in unconsolidated joint ventures may be impaired. An investment is impaired only if management's estimate of the value of the investment is less than the carrying value of the investments, and such decline in value is deemed to be other than temporary. To the extent impairment has occurred, the loss shall be measured as the excess of the carrying amount of the investment over the value of the investment. Our estimates of value for each joint venture investment are based on a number of assumptions that are subject to economic and market uncertainties including, among others, demand for space, competition for tenants, changes in market rental rates and operating costs of the property. As these factors are difficult to predict and are subject to future events that may alter our assumptions, the values estimated by us in our impairment analysis may not be realized. As of December 31, 2014 and 2013, we do not believe that any of our equity investments were impaired.

	Derivatives - We selectively enter into interest rate protection agreements to mitigate the impact of changes in interest rates on our variable rate borrowings. The notional amounts of such agreements are used to measure the interest to be paid or received and do not represent the amount of exposure to loss. None of these agreements are used for speculative or trading purposes.

	We recognize all derivatives as either assets or liabilities in the consolidated balance sheets and measure those instruments at their fair value. We also measure the effectiveness, as defined by the relevant accounting guidance, of all derivatives. We formally document our derivative transactions, including identifying the hedge instruments and hedged items, as well as our risk management objectives and strategies for entering into the hedge transaction. At inception and on a quarterly basis thereafter, we assess the effectiveness of derivatives used to hedge transactions. If a cash flow hedge is deemed effective, we record the change in fair value in other comprehensive income. If after assessment it is determined that a portion of the derivative is ineffective, then that portion of the derivative's change in fair value will be immediately recognized in earnings.

	Income Taxes - We operate in a manner intended to enable the Company to qualify as a REIT under the Internal Revenue Code. A REIT which distributes at least 90% of its taxable income to its shareholders each year and which meets certain other conditions is not taxed on that portion of its taxable income which is distributed to its shareholders. We intend to continue to qualify as a REIT and to distribute substantially all of the Company's taxable income to its shareholders. Accordingly, no provision has been made in the Company's consolidated financial statements for Federal income taxes. As a partnership, the allocated share of income or loss for the year with respect to the Operating Partnership is included in the income tax returns for the partners; accordingly, no provision has been made for Federal income taxes in the Operating Partnership's consolidated financial statements. In addition, we continue to evaluate uncertain tax positions. The tax years 2011 - 2014 remain open to examination by the major tax jurisdictions to which we are subject.

	With regard to the Company's unconsolidated Canadian joint ventures, deferred tax assets result principally from depreciation deducted under GAAP that exceed capital cost allowances claimed under Canadian tax rules. A valuation allowance is provided if we believe all or some portion of the deferred tax asset may not be realized. We have determined that a full valuation allowance is required as we believe none of the deferred tax assets will be realized.

	For income tax purposes, distributions paid to the Company's common shareholders consist of ordinary income, capital gains, return of capital or a combination thereof. Dividends per share for the years ended December 31, 2014, 2013 and 2012 were taxable as follows:


	Common dividends per share:		2014			2013			2012
	Ordinary income		$	0.7645		$	0.7894		$	0.8293

	Capital gain		—			0.0115			—

	Return of capital		0.1805			0.0841			0.0007

		$	0.945		$	0.885		$	0.83


The following reconciles net income available to the Company's shareholders to taxable income available to common shareholders for the years ended December 31, 2014, 2013 and 2012:


		2014			2013			2012
Net income available to the Company's shareholders		$	74,011		$	107,557		$	53,228

Book/tax difference on:
Depreciation and amortization		20,575			(10,697		)	16,034

Loss on sale or disposal of real estate		(9,524		)	(1,805		)	(1,543		)
Equity in earnings from unconsolidated joint ventures		12,910			5,601			5,037

Share-based payment compensation		(37,193		)	(3,818		)	(6,298		)
Gain on previously held interest in acquired joint venture		—			(24,710		)	—

Other differences		1,205			(5,823		)	(850		)

Taxable income available to common shareholders		$	61,984		$	66,305		$	65,608


Revenue Recognition - Base rentals are recognized on a straight-line basis over the term of the lease. Straight-line rent adjustments recorded in other assets were approximately $34.6 million and $30.9 million as of December 31, 2014 and 2013, respectively. As a provision of a tenant lease, if we make a cash payment to the tenant for purposes other than funding the construction of landlord assets, we defer the amount of such payments as a lease incentive. We amortize lease incentives as a reduction of base rental revenue over the term of the lease. Substantially all leases contain provisions which provide additional rents based on tenants' sales volume (“percentage rentals”) and reimbursement of the tenants' share of advertising and promotion, common area maintenance, insurance and real estate tax expenses. Percentage rentals are recognized when specified targets that trigger the contingent rent are met. Expense reimbursements are recognized in the period the applicable expenses are incurred. Payments received from the early termination of leases are recognized as revenue from the time the payment is receivable until the tenant vacates the space. The values of the above and below market leases are amortized and recorded as either an increase (in the case of below market leases) or a decrease (in the case of above market leases) to rental income over the remaining term of the associated lease. If a tenant terminates its lease prior to the original contractual termination of the lease and no rental payments are being made on the lease, any unamortized balance of the related above or below market lease value will be written off.

We receive development, leasing, loan guarantee, management and marketing fees from third parties and unconsolidated affiliates for services provided to properties held in joint ventures. Development fees are recognized as revenue when earned over the development period. Leasing fees are charged for newly executed leases and lease renewals, and are recognized as revenue when earned. Profits from development and leasing fees received from unconsolidated affiliates are recognized as revenue to the extent of the third-party partners' ownership interest. Profits earned to the extent of our ownership interest are recorded as a reduction to our investment in the unconsolidated affiliate. Loan guarantee fees are recognized over the term of the guarantee. Management fees are charged as a percentage of revenues (as defined in the management agreement) and are recognized as revenue when earned. Marketing fees are charged as a percentage of marketing expenses incurred by the property. Fees recognized from these activities are shown as management, leasing and other services in our consolidated statements of operations. Fees received from consolidated joint ventures are eliminated in consolidation.

Concentration of Credit Risk - We perform ongoing credit evaluations of our tenants. Although the tenants operate principally in the retail industry, the properties are geographically diverse. No single tenant accounted for 10% or more of combined base and percentage rental income or gross leasable area during 2014, 2013 or 2012.

Supplemental Cash Flow Information - We purchase capital equipment and incur costs relating to construction of new facilities, including tenant finishing allowances. Expenditures for these items included in trade payables as of December 31, 2014, 2013 and 2012 amounted to $23.0 million, $9.8 million and $7.1 million, respectively.

Non-cash investing activities that occurred during 2014 related to the acquisition of the remaining non-controlling interest in The Outlets at Hershey, as discussed in Note 3. In the In September 2011, we purchased substantially all of the economic interests in The Outlets at Hershey, a 248,000 square foot outlet center. A portion of the cash consideration paid to the buyer included a $6.2 million loan, which was included in other assets in the consolidated balance sheets, collateralized by their remaining ownership interest in the property. In October 2014, the loan was canceled in exchange for this remaining ownership interest in the property.

Non-cash financing activities that occurred during the 2013 period related to the acquisition of a controlling interest in Deer Park, as discussed in Note 3, included the assumption of debt totaling $237.9 million, and the issuance of $14.0 million in Class A common limited partnership units of the Operating Partnership as a portion of the consideration given. In addition, rental property and lease related intangible assets increased by $27.9 million related to the fair value of the one-third interest owned by Deer Park's other remaining partner and $26.0 million related to the fair value of our previously held interest in excess of carrying amount.

Interest paid, net of interest capitalized, in 2014, 2013 and 2012 was $55.4 million, $48.0 million and $46.8 million, respectively.

Accounting for Equity-Based Compensation - We may issue non-qualified options and other equity-based awards under the Amended and Restated Incentive Award Plan (the "Incentive Award Plan"). We account for our equity-based compensation plan under the fair value provisions of the relevant accounting guidance.

Foreign Currency Translation - We have entered into a co-ownership agreement with RioCan Real Estate Investment Trust to develop and acquire outlet centers in Canada for which the functional currency is the local currency. The assets and liabilities related to our investments in Canada are translated from their functional currency into U.S. Dollars at the rate of exchange in effect on the balance sheet date. Income statement accounts are translated using the average exchange rate for the period. Our share of unrealized gains and losses resulting from the translation of these financial statements are reflected in shareholders' equity as a component of accumulated other comprehensive loss in the Company's consolidated balance sheets.

New Accounting Pronouncements - In November 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-17, "Business Combinations (Topic 805): Pushdown Accounting" ("ASU 2014-17"). ASU 2014-17 provides an acquired entity with an option to apply pushdown accounting in its separate financial statements upon occurrence of an event in which an acquirer obtains control of the acquired entity. The acquired entity may elect the option to apply pushdown accounting in the reporting period in which the change-in-control event occurs. If pushdown accounting is not applied in the reporting period in which the change-in-control event occurs, an acquired entity will have the option to elect to apply pushdown accounting in a subsequent reporting period as a change in accounting principle in accordance with ASC Topic 250, "Accounting Changes and Error Corrections". If pushdown accounting is applied to an individual change-in-control event, that election is irrevocable. ASU 2014-17 also requires an acquired entity that elects the option to apply pushdown accounting in its separate financial statements to disclose information in the current reporting period that enables users of financial statements to evaluate the effect of pushdown accounting. We have adopted the amendments in ASU 2014-17, effective November 18, 2014, as the amendments in the update are effective upon issuance. The adoption did not have an impact on our consolidated financial statements.

In August 2014, the FASB issued ASU No. 2014-15 Presentation of Financial Statements—Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern, which requires management to evaluate whether there are conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern, and to provide certain disclosures when it is probable that the entity will be unable to meet its obligations as they become due within one year after the date that the financial statements are issued. ASU 2014-15 is effective for the annual period ended December 31, 2016 and for annual periods and interim periods thereafter with early adoption permitted. We are currently evaluating the new guidance to determine the impact it may have on our consolidated financial statements.

In April 2014, the FASB issued 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 (the "Final Standard"). Under the Final Standard, only disposals representing a strategic shift in operations (e.g., a disposal of a major geographic area, a major line of business or a major equity method investment) will be presented as discontinued operations. Under current GAAP, companies that sell a single investment property are generally required to report the sale as a discontinued operation, which requires the companies to reclassify earnings from continuing operations for all periods presented.The Final Standard is effective in the first quarter of 2015 for public entities with calendar year ends. The FASB will permit early adoption of the Final Standard, beginning in the first quarter of 2014, but only for disposals or classifications as held for sale that have not been reported in financial statements previously issued or available for issuance. We early adopted the standard in the first quarter of 2014. In the fourth quarter of 2014, we entered into an agreement with a private buyer to sell our outlet center in Lincoln City, Oregon along with an option agreement for the buyer to purchase an additional four properties. Subsequently, the buyer purchased the Lincoln City outlet center in December 2014. The buyer now has the option to purchase three properties during the first quarter of 2015 and, should it acquire those properties, one additional property during the first quarter of 2016. The four additional properties subject to the option agreement have been classified as rental property held for sale in our consolidated balance sheets as of December 31, 2014 and their results of operations have remained in continuing operations for both the sold and held for sale rental properties. See Note 4 Disposition of Properties and Properties Held for Sale for further information.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes the revenue recognition requirements in ASC 605, Revenue Recognition. This ASU is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. We are required to adopt the new pronouncement in the first quarter of fiscal 2017 using one of two retrospective application methods. We are currently evaluating the new guidance to determine the impact it may have on our consolidated financial statements.

Operating Partnership Unit Split - In August 2013, the Operating Partnership's operating agreement was amended to, among other things, effect a four-for-one split of the outstanding partnership units After the effect of the split, each Class A common limited partnership unit held by Non-Company LPs may be exchanged for one common share of the Company. Prior to the split, each unit held by the Non-Company LPs was exchangeable for four common shares of the Company. All references to the number of units outstanding and per unit amounts reflect the effect of the split for all periods presented.

Reclassifications - The amount related to construction trade payables on the consolidated balance sheets as of December 31, 2013 has been reclassified to the caption "accounts payable and accrued expenses" from the caption "construction trade payables" to conform to the presentation of the consolidated balance sheets as of December 31, 2014.

We have reclassified $3.1 million and $2.0 million related to management, leasing and other services in the consolidated statement of operations for the years ended December 31, 2013 and 2012, respectively, to the caption "management, leasing and other services" from the caption "other income" to conform to the presentation of the consolidated statement of operations for the year ended December 31, 2014.

In addition, we have reclassified certain amounts related to interest income and other income (expense) in the consolidated statement of operations for the years ended December 31, 2013 and 2012 to the caption "interest and other income" from the caption "other income" to conform to the presentation of the consolidated statement of operations for the year ended December 31, 2014.

Acquisition_of_Rental_Property

Acquisition of Rental Property	12 Months Ended
	Dec. 31, 2014
Acquisition of Rental Property [Abstract]
Acquisition of Rental Property	Acquisition of Rental Property

	2014 Acquisitions

	In September 2011, we purchased substantially all of the economic interests in The Outlets at Hershey, a 248,000 square foot outlet center. A portion of the cash consideration paid to the buyer included a $6.2 million loan, which was included in other assets in the consolidated balance sheets, collateralized by their remaining ownership interest in the property. In October 2014, the loan was canceled in exchange for this remaining ownership interest in the property.

	2013 Acquisitions

	In August 2013, Deer Park completed a refinancing of its existing debt and then immediately restructured the ownership whereby we acquired an additional ownership interest in the property from one of the partners which gave us a controlling interest. With the acquisition of this additional interest, we have consolidated the property for financial reporting purposes since the acquisition date, and remeasured our previously held interest that was accounted for as an equity method investment.

	Prior to the acquisition, Deer Park successfully negotiated new financing of the debt obligations for the previous mortgage and mezzanine loans totaling approximately $238.5 million, with a $150.0 million mortgage loan. The new five year mortgage loan bears interest at a 150 basis point spread over LIBOR. The previous mortgage and mezzanine loans were in default, and as part of the refinancing, all default interest associated with the loans was waived. Utilizing funding from our existing unsecured lines of credit, we loaned approximately $89.5 million at a rate of LIBOR plus 3.25% and due on August 30, 2020 to the Deer Park joint venture representing the remaining amount necessary to repay the previous mortgage and mezzanine loans. As a result of the refinancing, Deer Park recorded a gain on early extinguishment of debt of approximately $13.8 million. Our share of this gain along with our share of the income from the settlement of a lawsuit by Deer Park with a third party totaled approximately $7.8 million, which has been included in equity in earnings (losses) of unconsolidated joint ventures in the consolidated statement of operations for the year ended December 31, 2013.

	Subsequent to the debt extinguishment, we acquired an additional one-third interest in the Deer Park property from one of the owners, bringing our total ownership to a two-thirds interest, for total consideration of approximately $27.9 million, including $13.9 million in cash and 450,576 in Class A common limited partnership units of Tanger Properties Limited Partnership, which are exchangeable for an equivalent number of the Company's common shares. This transaction was accounted for as a business combination resulting in the assets acquired and liabilities assumed being recorded at fair value as a result of the step acquisition. Prior to the acquisition, the joint venture was considered a variable interest entity and was accounted for under the equity method of accounting since we did not have the ability to direct the significant activities that affect the economic performance of the venture as a one-third owner. Upon acquiring an additional one-third interest, we determined, based on the acquisition agreement and other transaction documents which amended our rights with respect to the property and our obligations with respect to the additional one-third interest, that we control the property assets and direct the property’s significant activities and therefore, consolidate the property’s assets and liabilities.

	The following table illustrates the fair value of the total consideration transferred and the amounts of the identifiable assets acquired and liabilities assumed at the acquisition date (in thousands):



	Cash transferred	$	13,939

	Common limited partnership units issued	13,981

	Fair value of total consideration transferred to acquire one-third interest	27,920

	Fair value of our previously held one-third interest	27,920

	Fair value of noncontrolling interest	27,920

	Fair value of net assets acquired	$	83,760





	The aggregate purchase price of the property was allocated as follows:



			Fair Value				Weighted-Average Amortization Period (in years)
			(in thousands)
	Land		$	82,413

	Buildings, improvements and fixtures		172,694

	Deferred lease costs and other intangibles
	Above market lease value		18,807				11.9

	Below market lease value		(12,658		)		18.5
	Lease in place value		28,846				7.6

	Tenant relationships		27,594				19

	Lease and legal costs		1,724				8.9

	Total deferred lease costs and other intangibles, net		64,313

	Other identifiable assets acquired and liabilities assumed, net		2,265

	Debt		(237,925		)
	Total fair value of net assets acquired		$	83,760


	There was no contingent consideration associated with this acquisition. We incurred approximately $1.0 million in third-party acquisition costs which were expensed as incurred. As a part of the acquisition accounting, we recorded a gain of $26.0 million which represented the difference between the carrying book value and the fair value of our previously held equity method investment in Deer Park.

Following the acquisition, we and the noncontrolling interest restructured certain aspects of our ownership of the property, whereby we receive substantially all of the economics generated by the property and would have substantial control over the property's financial activities. We and the noncontrolling interest entered into a triple net lease agreement with a different wholly-owned subsidiary of ours which operates the property as lessee. Under the new structure, we will serve as property manager and control the management, leasing, marketing and other operations of the property. We and the noncontrolling interest will receive, in proportion to our respective ownership interests, fixed annual lease payments of approximately $2.5 million, plus an amount necessary to pay the interest expense on debt related to the property. In addition, we and the noncontrolling interest have entered into an agreement whereby they may require us to acquire their ownership interest in the property on the second anniversary of the acquisition date for a price of $28.4 million, and we have the option to acquire their ownership interest on the fourth anniversary of the acquisition date at the same price. Due to the noncontrolling interest's ability to require us to purchase their interest, we have recorded an obligation to redeem their interest at the redemption price as a deferred financing obligation in the other liabilities section of the consolidated balance sheet.
The results of operations from the property are included in the consolidated statements of operations beginning on the acquisition date. The aggregate revenues and net loss from the property from the acquisition date through December 31, 2013, were $11.1 million and $3.5 million, respectively. The following unaudited condensed pro forma financial information for the years ended December 31, 2013 and 2012 is presented as if the acquisition had been consummated as of January 1, 2012, the beginning of the previous reporting period (in thousands, except per share data):


		(unaudited)
		(Pro forma)
		Year ended
		December 31,
		2013				2012
Total Revenue		$	408,333			$	381,388

Income from continuing operations		85,836				78,347

Net income attributable to Tanger Factory Outlet Centers, Inc.		80,621				73,219

Basic earnings per common share		0.86				0.8

Diluted earnings per common share		0.86				0.79


Supplemental pro forma earnings for 2013 were adjusted to exclude $1.0 million of third-party acquisition costs incurred in 2013 and $26.0 million of nonrecurring gain related to the fair value adjustment. Supplemental pro forma earnings for 2012 were adjusted to include those items.

Disposition_of_Properties_and_

Disposition of Properties and Properties Held for Sale	12 Months Ended
	Dec. 31, 2014
Disposition of Properties and Properties Held for Sale [Abstract]
Disposition of Properties and Properties Held for Sale	Disposition of Properties and Properties Held for Sale

	In the fourth quarter of 2014, we entered into an agreement with a private buyer to acquire our outlet center in Lincoln City, Oregon along with an option agreement to purchase an additional four properties. Subsequently, the buyer purchased the Lincoln City outlet center in December 2014. The buyer now has the option to purchase three properties during the first quarter of 2015 and, should they acquire those properties, one property during the first quarter of 2016.


	Property	Location		Date Sold	Square Feet	Net Sales Price		Gain on Sale(in 000's)
					(in 000's)	(in 000's)
	Lincoln City	Lincoln City, OR		12/22/14	270	$	38,993	$	7,513

	Properties held for sale	Various		—	712	—		—

					982	$	38,993	$	7,513


	The sold and held for sale rental properties did not meet the criteria set forth in the newly-adopted guidance for reporting discontinued operations (See Note 2—Summary of Significant Accounting Policies), thus their results of operations have remained in continuing operations. The held for sale rental properties have been classified as rental property held for sale as of December 31, 2014 on the consolidated balance sheets.

	The carrying values of the assets of those properties that remained unsold at December 31, 2014 totaled $46.0 million and were comprised of the following (in thousands):



		2014
	Rental property, net	$	43,532

	Deferred lease costs and other intangibles, net	757

	Prepaids and other assets	1,716

	Rental property held for sale	$	46,005

Development_of_Consolidated_Re

Development of Consolidated Rental Properties	12 Months Ended
Development of Consolidated Rental Properties	Dec. 31, 2014
Real Estate [Abstract]
Development of Consolidated Rental Properties	Development of Consolidated Rental Properties

	Foxwoods, Connecticut

	At the Foxwoods Resort Casino in Mashantucket, Connecticut, construction continued throughout 2014 on Tanger Outlets at Foxwoods. We own a controlling interest in the joint venture which is consolidated for financial reporting purposes. The outlet center will contain approximately 313,000 square feet and will be suspended above ground to join the casino floors of the two major hotels located within the resort. Construction originally commenced in September 2013 and currently we anticipate the outlet center will open during the second quarter of 2015. As of December 31, 2014, our partner’s equity contributions totaled approximately $1.0 million and our equity contributions totaled approximately $45.8 million. Our contributions have been funded with borrowings under our lines of credit and cash flow from operations.

	In addition, the joint venture has a mortgage loan with the ability to borrow up to $70.3 million at an interest rate of LIBOR + 1.65%. The loan initially matures in December 2017, with two one-year extension options. The balance of this loan as of December 31, 2014 was $25.2 million.

	Based on capital contribution and distribution provisions in the joint venture agreement, we expect our economic interest in the venture's cash flow to be greater than our legal ownership percentage of 67%. Our economic interest may fluctuate based on a number of factors, including mortgage financing, partnership capital contributions and distributions, and proceeds from gains or losses of asset sales.

	Grand Rapids, Michigan

	In July 2014, we purchased land for approximately $8.0 million and commenced construction on the development of an approximately 350,000 square foot wholly-owned outlet center near Grand Rapids, Michigan. The site is located 11 miles south of downtown Grand Rapids at the southwest quadrant of US-131 and 84th Street in Byron Township, Michigan, with visibility from both roads. The outlet center will be located approximately 30 miles east of Lake Michigan and its lakeside communities. Currently, we anticipate the outlet center will open in the second half of 2015. Costs incurred as of December 31, 2014, which have been funded with borrowings under our lines of credit and cash flow from operations, totaled approximately $19.7 million.

	West Branch, Michigan

	During the first quarter of 2014, we incurred property damage to our West Branch, Michigan outlet center due to a severe snow storm. Our insurance policy provides us with reimbursement for the replacement cost for the damage done to this property. As a result, we wrote off the damaged assets which had a net book value of approximately $455,000 and incurred approximately $567,000 of demolition costs. Through December 31, 2014, we received a total of approximately $1.3 million in insurance proceeds related to our property damage claim. During fiscal 2014, a casualty gain of $486,000 was recorded in interest and other income in the consolidated statements of operations, reflecting total expected replacement insurance proceeds in excess of the net book value written off and demolition costs incurred.

Investments_in_Unconsolidated_

Investments in Unconsolidated Real Estate Joint Ventures	12 Months Ended
	Dec. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]
Investments in Unconsolidated Real Estate Joint Ventures	Investments in Unconsolidated Real Estate Joint Ventures

	Our investments in unconsolidated joint ventures as of December 31, 2014 and 2013 aggregated $208.0 million and $140.2 million respectively. We have evaluated the accounting treatment for each of the joint ventures and have concluded based on the current facts and circumstances that the equity method of accounting should be used to account for the individual joint ventures. At December 31, 2014 and 2013, we were members of the following unconsolidated real estate joint ventures:



	As of December 31, 2014
	Joint Venture		Outlet Center Location		Ownership %			Square Feet		Carrying Value of Investment (in millions)			Total Joint Venture Debt
								(in 000's)					(in millions)
	Galveston/Houston		Texas City, TX		50	%		353		$	1.3		$	65

	National Harbor		National Harbor, MD		50	%		339		9.5			83.7

	RioCan Canada		Various		50	%		870		132.5			15.7

	Savannah (1)		Savannah, GA		50	%		—		46.5			25.5

	Westgate		Glendale, AZ		58	%		381		14.3			54

	Wisconsin Dells		Wisconsin Dells, WI		50	%		265		2.4			24.3

	Other							—		1.5			—

										$	208		$	268.2


	Charlotte(2)		Charlotte, NC		50	%		398		$	(2.2	)	$	90

										$	(2.2	)	$	90


	-1	Based on capital contribution and distribution provisions in the joint venture agreement, we expect our economic interest in the venture's cash flow to be greater than the ownership percentage indicated above, which in this case, states our legal interest in this venture. Our economic interest may fluctuate based on a number of factors, including mortgage financing, partnership capital contributions and distributions, and proceeds from gains or losses of asset sales.

	-2	The negative carrying value is due to the distributions of proceeds from a mortgage loan, as well as quarterly distributions of excess cash flow, exceeding the original contributions from the partners.




	As of December 31, 2013
	Joint Venture		Outlet Center Location		Ownership %			Square Feet		Carrying Value of Investment (in millions)			Total Joint Venture Debt
								(in 000's)					(in millions)
	Charlotte		Charlotte, NC		50	%		—		$	11.6		$	—

	Galveston/Houston		Texas City, TX		50	%		353		7.4			65

	National Harbor		National Harbor, MD		50	%		336		16.7			52.4

	RioCan Canada		Various		50	%		433		85.7			17.9

	Westgate		Glendale, AZ		58	%		332		16.1			43.1

	Wisconsin Dells		Wisconsin Dells, WI		50	%		265		2.5			24.3

	Other							—		0.2			—

										$	140.2		$	202.7


	These investments are recorded initially at cost and subsequently adjusted for our equity in the venture's net income (loss), cash contributions, distributions and other adjustments required by the equity method of accounting as described below.

	Fees we received for various services provided to our unconsolidated joint ventures were recognized in management, leasing and other services as follows (in thousands):


			Year Ended December 31,
		2014				2013			2012
Fees:
Development and leasing		$	725			$	595		$	193

Loan guarantee		463				161			80

Management		1,897				1,831			1,301

Marketing		506				493			433

Total Fees		$	3,591			$	3,080		$	2,007


Our investments in real estate joint ventures are reduced by the percentage of the profits earned for leasing and development services associated with our ownership interest in each joint venture. Our carrying value of investments in unconsolidated joint ventures differs from our share of the assets reported in the “Summary Balance Sheets - Unconsolidated Joint Ventures” shown below due to adjustments to the book basis, including intercompany profits on sales of services that are capitalized by the unconsolidated joint ventures. The differences in basis (totaling $4.4 million and $1.6 million as of December 31, 2014 and 2013, respectively) are amortized over the various useful lives of the related assets.

Charlotte, North Carolina

In July 2014, we opened a 398,000 square foot outlet center in Charlotte, NC that was developed through, and is owned by, a joint venture formed in May 2013. The outlet center is located eight miles southwest of uptown Charlotte at the interchange of I-485 and Steele Creek Road (North Carolina Highway 160). Construction of the outlet center, which commenced during the third quarter of 2013, was initially funded with equal equity contributions by the partners. In November 2014, the joint venture closed on an interest only mortgage closed on an interest only mortgage loan for $90.0 million at an interest rate of LIBOR + 1.45%. The loan initially matures in November 2018, with the option to extend the maturity for one additional year. The joint venture received net loan proceeds of $89.4 million and distributed them equally to the partners. The loan balance as of December 31, 2014 was approximately $90.0 million. During construction, we provided development services to the joint venture and joint leasing services with our partner. Subsequent to the outlet center opening, our partner is providing property management, marketing and leasing services to the joint venture.

Deer Park, Long Island, New York

As described in Note 3, we acquired an additional one-third ownership interest in Deer Park and have consolidated the property for financial reporting purposes since the acquisition date. Prior to August 30, 2013, this was an unconsolidated joint venture.

Galveston/Houston, Texas

In October 2012, we opened an approximately 353,000 square foot outlet center in Texas City, Texas that was developed through, and is owned by, a joint venture formed in June 2011. The development was initially fully funded with equity contributed to the joint venture by Tanger and its partner. In July 2013, the joint venture closed on a $70.0 million mortgage loan with a rate of LIBOR + 1.50% and a maturity date of July 2017, with the option to extend the maturity for one additional year. The joint venture received total loan proceeds of $65.0 million and distributed the net proceeds equally to the partners. We used our share of the proceeds to reduce amounts outstanding under our unsecured lines of credit. We are providing property management, marketing and leasing services to the outlet center.




National Harbor, Maryland

In November 2013, we opened an approximately 339,000 square foot outlet center at National Harbor in the Washington, D.C. Metro area that was developed through, and is owned by, a joint venture formed in May 2011. In November 2014, the joint venture amended the initial construction loan to increase the amount available to borrow from $62.0 million to $87.0 million and extended the maturity date until November 2019. The loan still carries an interest rate of LIBOR + 1.65%. At the closing of the amendment, the joint venture distributed approximately $19.0 million equally between the partners. The loan balance as of December 31, 2014 was approximately $83.7 million. We are providing property management, marketing and leasing services to the joint venture.

RioCan Canada

We have entered into a 50/50 co-ownership agreement with RioCan Real Estate Investment Trust to develop and acquire outlet centers in Canada. Under the agreement, any outlet centers developed or acquired will be branded as Tanger Outlet Centers. We have agreed to provide leasing and marketing services for the outlet centers and RioCan has agreed to provide development and property management services.

In October 2014, the co-owners opened Tanger Outlets Ottawa, the first ground up development of a Tanger Outlet Center in Canada. Located in suburban Kanata off the TransCanada Highway (Highway 417) at Palladium Drive, the outlet center currently contains approximately 288,000 square feet, with additional square footage totaling approximately 28,000 square feet related to an anchor tenant expected to be completed and opened in early 2016. During the second quarter of 2013, the co-owners purchased the land for $28.7 million and broke ground on construction. As of December 31, 2014, our share of the costs incurred to date for the development of the outlet center, which was funded with equity, totaled approximately $45.3 million.

In November 2014, the co-owners opened an approximately 149,000 square foot expansion to the existing Cookstown Outlet Mall, bringing the total square feet of the outlet center to approximately 305,000 square feet. The co-owners acquired land adjacent to the existing Cookstown Outlet Mall in March 2013 for $13.8 million and commenced construction of the expansion in May 2013. As of December 31, 2014, our share of the incurred costs related to the expansion and renovation of the existing outlet center, which was funded with equity, totaled approximately $27.1 million.

Other properties owned by the RioCan Canada co-owners include Les Factoreries Saint-Sauveur and Bromont Outlet Mall. Les Factoreries Saint-Sauveur, is located northwest of Montreal adjacent to Highway 15 in the town of Saint-Sauveur, Quebec and is approximately 116,000 square feet. The Bromont Outlet Mall, is located east of Montreal near the eastern townships adjacent to Highway 10 in the town of Bromont, Quebec and is approximately 161,000 square feet

During the first quarter of 2012, the co-owners terminated an option contract to develop a outlet center in Halton Hills, Ontario and accordingly wrote-off pre-development costs of approximately $1.4 million.

Savannah, Georgia

In January 2014, we announced a joint venture arrangement to develop Tanger Outlets Savannah. The outlet center will include approximately 377,000 square feet, and is located on I-95, just north of I-16 in Pooler, Georgia, adjacent to the City of Savannah, and near the Savannah International Airport. As of December 31, 2014, our equity contributions totaled $45.2 million and our partner’s equity contributions totaled $7.4 million. Contributions we make in excess of our partners' equity contributions will earn a preferred rate of return equal to 8% from the date the contributions are made until the outlet center’s grand opening date, and then 10% annually thereafter.

The joint venture has an interest only mortgage loan with the ability to borrow up to $93.0 million at an interest rate of LIBOR + 1.65%. The loan initially matures on May 21, 2017, with two, one -year extension options. As of December 31, 2014, the balance on the loan was $25.5 million. We are providing development, management and marketing services to the joint venture; and with our partner, are jointly providing leasing services to the outlet center.

Westgate, Glendale, Arizona

In November 2014, the joint venture completed approximately 50,000 square feet of a 78,000 square foot expansion of the existing property which upon completion will bring the total square feet of the outlet center to approximately 409,000 square feet. The remaining square footage is expected to be completed and opened in the first quarter of 2015. Construction commenced on the expansion during the second quarter of 2014 and was funded with borrowings under the amended Westgate mortgage loan. In May 2014, the joint venture amended and restated the initial construction loan to increase the amount available to borrow from $48.3 million to $62.0 million. The amended and restated loan matures in June 2015 with the option to extend the maturity date for two additional years. As of December 31, 2014, the balance on the loan was $54.0 million.

The Westgate outlet center opened in November 2012 and was developed through, and currently owned by, a joint venture that was formed in May 2012. We are providing property management, construction supervision, marketing and leasing services to the joint venture.
Wisconsin Dells, Wisconsin

The Wisconsin Dells outlet center opened in August 2006 as was developed through, and is currently owned by, a joint venture that was formed in March 2005. In December 2012, the joint venture closed on the refinance of its $24.3 million mortgage loan. The refinanced interest-only, non-recourse mortgage loan has a 10 year term and carries an interest rate of LIBOR + 2.25%. We are providing property management, leasing and marketing services to the joint venture.

In February 2015, we closed on the sale of our equity interest in the joint venture that owned an outlet center in Wisconsin Dells, Wisconsin for approximately $15.6 million. As a result of this transaction, we expect to record a gain of approximately $13.9 million in the first quarter of 2015, which represents the difference between the carrying value of our equity method investment and the purchase price.





Condensed combined summary financial information of joint ventures accounted for using the equity method as of December 31, 2014 and 2013 is as follows (in thousands):


Condensed Combined Balance Sheets - Unconsolidated Joint Ventures		2014				2013
Assets
Land		$	102,601			$	66,020

Buildings, improvements and fixtures		542,501				327,972

Construction in progress, including land		104,780				86,880

		749,882				480,872

Accumulated depreciation		(48,233		)		(29,523		)
Total rental property, net		701,649				451,349

Cash and cash equivalents		46,917				22,704

Deferred lease costs, net		21,234				19,281

Deferred debt origination costs, net		5,995				1,737

Prepaids and other assets		12,766				9,107

Total assets		$	788,561			$	504,178

Liabilities and Owners' Equity
Mortgages payable		$	358,219			$	222,058

Accounts payable and other liabilities		70,795				8,540

Total liabilities		429,014				230,598

Owners' equity		359,547				273,580

Total liabilities and owners' equity		$	788,561			$	504,178




Condensed Combined Statements of Operations- Unconsolidated Joint Ventures:		Year Ended December 31,
		2014				2013			2012
Revenues (1)		$	78,625			$	85,682		$	54,936

Expenses:
Property operating		30,986				31,610			24,678

General and administrative		621				977			970

Acquisition costs		—				477			1,437

Abandoned development costs		472				153			1,447

Impairment charge		—				—			420

Depreciation and amortization		23,426				26,912			19,914

Total expenses		55,505				60,129			48,866

Operating income		23,120				25,553			6,070

Gain on early extinguishment of debt (2)		—				13,820			—

Interest expense		(5,459		)		(11,602		)	(14,760		)
Net income (loss)		$	17,661			$	27,771		$	(8,690	)

The Company and Operating Partnership's share of:
Net income (loss)		$	9,053			$	11,040		$	(3,295	)

Depreciation and asset impairments (real estate related) (2)		12,212				12,419			8,245


-1	Note that revenues for the year ended December 31, 2013 include approximately $9.5 million of other income from the settlement of a lawsuit at Deer Park prior to our acquisition of an additional one-third interest in and the consolidation of the property.

-2	Represents a gain on early extinguishment of debt that was recorded as part of the refinancing of the debt at Deer Park in August 2013 (See Note 3).

Deferred_Charges

Deferred Charges	12 Months Ended
	Dec. 31, 2014
Deferred Costs [Abstract]
Deferred Charges	Deferred Charges

	Deferred lease costs and other intangibles, net as of December 31, 2014 and 2013 consist of the following (in thousands):


		2014			2013
	Deferred lease costs	$	61,205		$	60,657

	Intangible assets:
	Above market leases	44,144			49,584

	Lease in place value	69,893			102,085

	Tenant relationships	57,230			62,438

	Other intangibles	42,789			45,534

		275,261			320,298

	Accumulated amortization	(134,378		)	(156,717		)
	Deferred lease costs and other intangibles, net	$	140,883		$	163,581


	Below market lease intangibles, net of accumulated amortization, included in other liabilities on the consolidated balance sheets as of December 31, 2014 and 2013 were $12.9 million and $15.7 million, respectively.

	Amortization of deferred lease costs and other intangibles, excluding above and below market leases, included in depreciation and amortization for the years ended December 31, 2014, 2013 and 2012 was $20.9 million, $19.8 million and $24.1 million, respectively.

	Amortization of above and below market lease intangibles recorded as an increase or (decrease) in base rentals for the years ended December 31, 2014, 2013 and 2012 was $(2.8) million, $(686,000) and $803,000, respectively.

	Estimated aggregate amortization of net above and below market leases and other intangibles for each of the five succeeding years is as follows (in thousands):


	Year	Above/below market leases, net			Deferred lease costs and other intangibles
	2015	$	2,324		$	11,478

	2016	1,957			9,977

	2017	1,997			8,195

	2018	1,880			7,220

	2019	466			4,922

	Total	$	8,624		$	41,792


	Deferred debt origination costs, net as of December 31, 2014 and 2013 consist of the following (in thousands):


		2014			2013
	Deferred debt origination costs	$	22,126		$	20,112

	Accumulated amortization	(10,000		)	(9,294		)
	Deferred debt origination costs, net	$	12,126		$	10,818


	Amortization of deferred debt origination costs included in interest expense for the years ended December 31, 2014, 2013 and 2012 was $2.4 million, $2.2 million and $2.3 million, respectively.

Debt_of_the_Company

Debt of the Company (Tanger Factory Outlet Centers, Inc [Member])	12 Months Ended
	Dec. 31, 2014
Tanger Factory Outlet Centers, Inc [Member]
Debt of the Company	Debt of the Company

	All of the Company's debt is held by the Operating Partnership and its consolidated subsidiaries.

	The Company guarantees the Operating Partnership's obligations with respect to its unsecured lines of credit which have a total borrowing capacity of $520.0 million. As of December 31, 2014 and December 31, 2013, the Operating Partnership had amounts outstanding on these lines totaling $111.0 million and $16.2 million, respectively.

	The Company also guarantees the Operating Partnership's unsecured term loan as well as its obligation with respect to the mortgage assumed in connection with the acquisition of the outlet center in Ocean City, Maryland in July 2011. As of December 31, 2014, the amounts outstanding on the term loan and mortgage were $250.0 million and $17.9 million, respectively.

Debt_of_the_Operating_Partners

Debt of the Operating Partnership (Tanger Properties Limited Partnership [Member])	12 Months Ended
	Dec. 31, 2014
Tanger Properties Limited Partnership [Member]
Debt of the Operating Partnership	Debt of the Operating Partnership

	Debt as of December 31, 2014 and 2013 consists of the following (in thousands):


						As of					As of
						December 31, 2014					December 31, 2013
			Stated Interest Rate(s)		Maturity Date	Principal		Premium			Principal		Premium
								(Discount)					(Discount)
	Senior, unsecured notes:

	Senior notes		6.15	%	Nov-15	$	—	$	—		$	250,000	$	(211	)

	Senior notes		6.125	%	Jun-20	300,000		(1,276		)	300,000		(1,469		)

	Senior notes		3.875	%	Dec-23	250,000		(3,732		)	250,000		(4,072		)

	Senior notes		3.75	%	Dec-24	$	250,000	$	(1,418	)	—		—


	Mortgages payable:
	Atlantic City (1)		5.14%-7.65%		November 2021- December 2026	45,997		3,694			48,535		4,091

	Deer Park		LIBOR + 1.50%		Aug-18	150,000		(1,161		)	150,000		(1,478		)

	Hershey (1)		5.17%-8.00%		Aug-15	29,271		399			29,970		993

	Ocean City (1)		5.24	%	Jan-16	17,827		99			18,193		193

	Foxwoods		LIBOR + 1.65%		Dec-17	25,235		—			—		—

	Note payable (1)		1.5	%	Jun-16	10,000		(241		)	10,000		(396		)

	Unsecured term loan		LIBOR + 1.05%		Feb-19	250,000		—			250,000		—

	Unsecured term note		LIBOR + 1.30%		Aug-17	7,500		—			7,500		—

	Unsecured lines of credit		LIBOR + 1.00%		Oct-17	111,000		—			16,200		—

						$	1,446,830	$	(3,636	)	$	1,330,398	$	(2,349	)


	-1	The effective interest rates assigned during the purchase price allocation to these assumed mortgages and note payable during acquisitions in 2011 were as follows: Atlantic City 5.05%, Ocean City 4.68%, Hershey 3.40% and note payable 3.15%.

	Certain of our properties, which had a net book value of approximately $602.7 million at December 31, 2014, serve as collateral for mortgages payable. We maintain unsecured lines of credit that provide for borrowings of up to $520.0 million. The unsecured lines of credit include a $20.0 million liquidity line and a $500.0 million syndicated line. The syndicated line may be increased to $750.0 million through an accordion feature in certain circumstances.

	We provide guarantees to lenders for our joint ventures which include standard non-recourse carve out indemnifications for losses arising from items such as but not limited to fraud, physical waste, payment of taxes, environmental indemnities, misapplication of insurance proceeds or security deposits and failure to maintain required insurance. For construction and term loans, we may include a guaranty of completion as well as a principal guaranty ranging from 5% to 100% of principal. The principal guarantees include terms for release based upon satisfactory completion of construction and performance targets including occupancy thresholds and minimum debt service coverage tests.

	The unsecured lines of credit and senior unsecured notes include covenants that require the maintenance of certain ratios, including debt service coverage and leverage, and limit the payment of dividends such that dividends and distributions will not exceed funds from operations, as defined in the agreements, for the prior fiscal year on an annual basis or 95% of funds from operations on a cumulative basis. As of December 31, 2014, we were in compliance with all of our debt covenants.

	2014 Transactions

	Foxwoods Mortgage

	In December 2014, the joint venture closed on a mortgage loan with the ability to borrow up to $70.3 million at an interest rate of LIBOR + 1.65%. The loan initially matures in December 2017, with two one -year extension options. The balance of this loan as of December 31, 2014 was $25.2 million.

	Amendment of $250.0 Million Unsecured Term Loan

	In July 2014, we entered into an amendment of our $250.0 million unsecured term loan which matures in February 2019. The amendment reduced the interest rate on the loan from LIBOR + 1.60% to LIBOR + 1.05%. No other material terms of the loan were amended.

	$250.0 Million Unsecured Senior Notes

	In November 2014, Tanger Properties Limited Partnership completed a public offering of $250.0 million in senior notes due 2024 in an underwritten public offering. The notes were priced at 99.429% of the principal amount to yield 3.819% to maturity. The notes will pay interest semi-annually at a rate of 3.750% per annum and mature on December 1, 2024. The net proceeds from the offering, after deducting the underwriting discount and offering expenses, were approximately $246.2 million. We used the net proceeds from the sale of the notes to redeem our $250.0 million 6.15% senior notes due November 2015. We recorded a charge of approximately $13.1 million for the make-whole premium related to the early redemption, which was completed in December 2014.

2013 Transactions

Assumption of $150.0 Mortgage and Entrance into Derivatives

In August 2013, as part of the acquisition of a controlling ownership interest in Deer Park, we assumed an $150.0 million interest only mortgage loan, including a fair value discount of $1.6 million. The loan has a five year term and carries an interest rate of LIBOR + 1.50%. In October 2013, we entered into interest rate swap agreements to reduce our floating rate debt exposure by locking the interest rate on the $150.0 million mortgage. The interest rate swap agreements fix the base LIBOR rate at an average of 1.30%, creating a contractual interest rate for the loan of 2.80% through August 2018.

Extension of Unsecured Lines of Credit

In October 2013, we closed on amendments to our unsecured lines of credit, extending the maturity, and reducing the overall borrowing costs. The maturity of these facilities was extended from November 10, 2015 to October 24, 2017 with the ability to further extend the maturity for an additional year at our option. The annual commitment fee, which is payable on the full $520.0 million in loan commitments, was reduced from 0.175% to 0.15%, and the interest rate spread over LIBOR was reduced from 1.10% to 1.00% based on our current credit rating. Loan origination costs associated with the amendments totaled approximately $1.5 million.

$250.0 Million Unsecured Senior Notes

In November 2013, Tanger Properties Limited Partnership completed a public offering of $250.0 million in senior notes due 2023 in an underwritten public offering. The notes were priced at 98.360% of the principal amount to yield 4.076% to maturity. The notes will pay interest semi-annually at a rate of 3.875% per annum and mature on December 1, 2023. The net proceeds from the offering, after deducting the underwriting discount and offering expenses, were approximately $243.6 million. We used the net proceeds from the sale of the notes to repay borrowings under our unsecured lines of credit.

2012 Transactions
In February 2012, the Operating Partnership closed on a seven-year $250.0 million unsecured term loan. The term loan is interest only, matures in the first quarter of 2019 and is pre-payable without penalty beginning in February of 2015. Based on our credit ratings at that time, and until amended in July 2014, the loan had an interest rate of LIBOR + 1.60%. We used the net proceeds of the term loan to reduce the outstanding balances on our unsecured lines of credit.
Debt Maturities

Maturities of the existing long-term debt as of December 31, 2014 are as follows (in thousands):


Calendar Year		Amount
2015		$	32,343

2016		30,283

2017		146,743

2018		153,183

2019		253,369

Thereafter		830,909

Subtotal		1,446,830

Net discount		(3,636		)
Total		$	1,443,194

Derivative_Financial_Instrumen

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments

	The following table summarizes the terms and fair values of our derivative financial instruments, as well as their classifications within the consolidated balance sheets as of December 31, 2014 and December 31, 2013 (in thousands):


											Fair Value
	Effective Date	Maturity Date	Notional Amount			Bank Pay Rate		Company Fixed Pay Rate			2014		2013
	Assets:
	14-Nov-13	14-Aug-18	$	50,000		1 month LIBOR		1.3075	%		$	26	$	455

	14-Nov-13	14-Aug-18	50,000			1 month LIBOR		1.297	%		40		440

	14-Nov-13	14-Aug-18	50,000			1 month LIBOR		1.3025	%		29		487

	Total		$	150,000							$	95	$	1,382


	The derivative financial instruments are comprised of interest rate swaps, which are designated and qualify as cash flow hedges, each with a separate counterparty. We do not use derivatives for trading or speculative purposes and currently do not have any derivatives that are not designated as hedges.

	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 derivative, if any, is recognized directly in earnings.

	The following table represents the effect of the derivative financial instruments on the accompanying consolidated financial statements for the years ended December 31, 2014, 2013 and 2012, respectively (in thousands):


		Location of Reclassification from Accumulated Other Comprehensive Income Into Income	December 31,
			2014			2013			2012
	Interest Rate Swaps (Effective Portion):
	Amount of (gain) loss recognized in other comprehensive income on derivative		$	(1,287	)	$	1,382		$	—


	Treasury Rate Lock (Effective Portion):
	Amount of gain reclassified from accumulated other comprehensive income into income	Interest Expense	$	741		$	371		$	351


	In 2005, we settled two US treasury rate lock agreements associated with a 10 year senior, unsecured bond offering and received approximately $3.2 million. The unamortized balance of the settled agreements as of December 31, 2013 was $741,000. We fully amortized the remaining balance during 2014 in connection with the early redemption of the associated 10 year senior, unsecured notes in December 2014.

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements

	Fair value guidance establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers are defined as follows:



	Tier	Description
	Level 1	Observable inputs such as quoted prices in active markets

	Level 2	Inputs other than quoted prices in active markets that are either directly or indirectly observable

	Level 3	Unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions

	The following table sets forth our assets and liabilities that are measured at fair value within the fair value hierarchy (in thousands):


				Level 1		Level 2		Level 3
				Quoted Prices in Active Markets for Identical Assets or Liabilities		Significant Observable Inputs		Significant Unobservable Inputs
		Total
	Fair value as of December 31, 2014:
	Assets:
	Interest rate swaps (prepaids and other assets)	$	95	$	—	$	95	$	—

	Total assets	$	95	$	—	$	95	$	—






				Level 1		Level 2		Level 3
				Quoted Prices in Active Markets for Identical Assets or Liabilities		Significant Observable Inputs		Significant Unobservable Inputs
		Total
	Fair value as of December 31, 2013:
	Assets:
	Interest rate swaps (prepaids and other assets)	$	1,382	$	—	$	1,382	$	—

	Total assets	$	1,382	$	—	$	1,382	$	—


	The estimated fair value of our debt, consisting of senior unsecured notes, unsecured term loans, secured mortgages and unsecured lines of credit, at December 31, 2014 and December 31, 2013, was $1.5 billion and $1.4 billion, respectively, and its recorded value was $1.4 billion and $1.3 billion, respectively. With the exception of the unsecured term loan and unsecured lines of credit, that have variable rates and considered at market value, fair values of the senior notes and mortgage loans are determined using discounted cash flow analysis with an interest rate or credit spread similar to that of current market borrowing arrangements. Because the Company's senior unsecured notes are publicly traded with limited trading volume, these instruments are classified as Level 2 in the hierarchy. In contrast, mortgage loans are classified as Level 3 given the unobservable inputs utilized in the valuation. Considerable judgment is necessary to develop estimated fair values of financial instruments. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Company could realize on the disposition of the financial instruments.

	The carrying values of cash and cash equivalents, receivables, accounts payable, accrued expenses and other assets and liabilities are reasonable estimates of their fair values because of the short maturities of these instruments.

Shareholders_Equity_of_the_Com

Shareholders' Equity of the Company (Tanger Factory Outlet Centers, Inc [Member])	12 Months Ended
	Dec. 31, 2014
Tanger Factory Outlet Centers, Inc [Member]
Schedule of Shareholders' Equity of the Company [Line Items]
Stockholders' Equity of the Company	Shareholders' Equity of the Company

	2014 Transactions

	For the year ended December 31, 2014, Non-Company LPs exchanged a total of 66,606 Class A common limited partnership units of the Operating Partnership for an equal number of common shares of the Company. After the above described exchanges, the Non-Company LPs owned 5,078,406 Class A common limited partnership units. Each Class A common limited partnership unit is exchangeable for one common share of the Company.

	2013 Transactions

	For the year ended December 31, 2013, Non-Company LPs exchanged a total of 67,428 Class A common limited partnership units of the Operating Partnership for an equal number of common shares of the Company. After the above described exchanges, the Non-Company LPs owned 5,145,012 Class A common limited partnership units.

	2012 Transactions

	For the year ended December 31, 2012, Non-Company LPs exchanged a total of 6,730,028 Class A common limited partnership units of the Operating Partnership for an equal number of common shares of the Company.

Partners_Equity_of_the_Operati

Partners' Equity of the Operating Partnership (Tanger Properties Limited Partnership [Member])	12 Months Ended
	Dec. 31, 2014
Tanger Properties Limited Partnership [Member]
Schedule of Partners' Equity of the Operating Partnership [Line Items]
Partners' Equity of the Operating Partnership	Partners' Equity of the Operating Partnership

	In August 2013, the Operating Partnership's operating agreement was amended to, among other things, effect a four-for-one split of the outstanding partnership units. After the effect of the split, each Class A common limited partnership unit held by Non-Company LPs may be exchanged for one common share of the Company. Prior to the split, each unit held by the Non-Company LPs was exchangeable for four common shares of the Company. All references to the number of units outstanding and per unit amounts reflect the effect of the split for all periods presented.

	All units of partnership interest issued by the Operating Partnership have equal rights with respect to earnings, dividends and net assets. When the Company issues common shares upon the exercise of options, the issuance of restricted share awards or the exchange of Class A common limited partnership units, the Operating Partnership issues a corresponding Class B common limited partnership unit to Tanger LP trust, a wholly owned subsidiary of the Company.

	Also, in August 2013 as disclosed in Note 3, the Operating Partnership issued 450,576 Class A common limited partnership units as partial consideration for the acquisition of an additional one-third interest in Deer Park.

	The following table sets forth the changes in outstanding partnership units for the years ended December 31, 2014, 2013 and 2012:


			Limited Partnership Units
		General partnership units	Class A		Class B		Total
	Balance December 31, 2011	1,000,000	11,491,892		85,727,656		97,219,548

	Exchange of Class A limited partnership units	—	(6,730,028	)	6,730,028		—

	Issuance of restricted units	—	—		566,000		566,000

	Units issued upon exercise of options	—	—		37,700		37,700

	Balance December 31, 2012	1,000,000	4,761,864		93,061,384		97,823,248

	Exchange of Class A limited partnership units	—	(67,428	)	67,428		—

	Issuance of restricted units	—	—		332,373		332,373

	Units issued upon exercise of options	—	—		44,500		44,500

	Units issued as consideration for business acquisition (see Note 3)	—	450,576		—		450,576

	Balance December 31, 2013	1,000,000	5,145,012		93,505,685		98,650,697

	Units withheld for employee income taxes	—	—		(412,239	)	(412,239	)

	Exchange of Class A limited partnership units	—	(66,606	)	66,606		—

	Issuance of restricted units	—	—		1,302,729		1,302,729

	Units issued upon exercise of options	—	—		47,000		47,000

	Balance December 31, 2014	1,000,000	5,078,406		94,509,781		99,588,187

Noncontrolling_Interests

Noncontrolling Interests	12 Months Ended
	Dec. 31, 2014
Noncontrolling Interest [Abstract]
Noncontrolling Interests	Noncontrolling Interests

	Noncontrolling interests in the Operating Partnership relate to the interests in the Operating Partnership owned by Non-Company LPs as discussed in Note 2. The noncontrolling interests in other consolidated partnerships consist of outside equity interests in partnerships not wholly owned by the Company or the Operating Partnership that are consolidated with the financial results of the Company and Operating Partnership because the Operating Partnership exercises control over the entities that own the properties.

	As discussed in Note 12, Non-Company LPs exchanged during 2014 a total of 66,606 Class A Common limited partnership units for an equal number of common shares of the Company, and during 2013 a total of 67,428 Class A common limited partnership units for an equal number of common shares of the Company. Therefore, the Company recorded an increase to additional paid-in capital of $741,000 during 2014 and $11.1 million in 2013 to reflect the transfer of ownership interests from a noncontrolling unit holder to a shareholder of the Company's common shares. The changes in the Company's ownership interests in the subsidiaries impacted consolidated equity during the periods shown as follows:


			2014		2013
	Net income attributable to Tanger Factory Outlet Centers, Inc.		$	74,011	$	107,557

	Increase in Tanger Factory Outlet Centers, Inc. paid-in-capital adjustments to noncontrolling interests (1)		741		11,130

	Changes from net income attributable to Tanger Factory Outlet Centers, Inc. and transfers from noncontrolling interest		$	74,752	$	118,687


	-1	In 2014 and 2013, adjustments of the noncontrolling interest were made as a result of increases in the Company's ownership of the Operating Partnership from additional units received in connection with the Company's issuance of common shares upon exercise of options, share-based compensation and the issuance of common shares upon exchange of Class A common limited partnership units.

Earnings_Per_Share_of_the_Comp

Earnings Per Share of the Company (Tanger Factory Outlet Centers, Inc [Member])	12 Months Ended
	Dec. 31, 2014
Tanger Factory Outlet Centers, Inc [Member]
Earnings Per Share of the Company	Earnings Per Share of the Company

	The following table sets forth a reconciliation of the numerators and denominators in computing earnings per share for the years ended December 31, 2014, 2013 and 2012 (in thousands, except per share amounts):


		2014			2013			2012
	NUMERATOR
	Net income attributable to Tanger Factory Outlet Centers, Inc.	$	74,011		$	107,557		$	53,228

	Less allocation of earnings to participating securities	(1,872		)	(1,126		)	(784		)
	Net income available to common shareholders of Tanger Factory Outlet Centers, Inc.	$	72,139		$	106,431		$	52,444

	DENOMINATOR
	Basic weighted average common shares	93,769			93,311			91,733

	Effect of notional units	—			849			846

	Effect of outstanding options and certain restricted common shares	70			87			82

	Diluted weighted average common shares	93,839			94,247			92,661


	Basic earnings per common share:
	Net income	$	0.77		$	1.14		$	0.57


	Diluted earnings per common share:
	Net income	$	0.77		$	1.13		$	0.57


	The notional units are considered contingently issuable common shares and are included in earnings per share if the effect is dilutive using the treasury stock method. Notional units granted in 2010 were converted into 933,769 restricted common shares in January 2014. The restricted common shares vested on December 31, 2014 and were considered participating securities through the vesting date.

	The computation of diluted earnings per share excludes options to purchase common shares when the exercise price is greater than the average market price of the common shares for the period. For the years ended December 31, 2014 and 2012, 259,000 options and 17,600 options were excluded from the computation, respectively. There were no options excluded from the computation for the year end December 31, 2013. The assumed exchange of the partnership units held by the Non-Company LPs as of the beginning of the year, which would result in the elimination of earnings allocated to the noncontrolling interest in the Operating Partnership, would have no impact on earnings per share since the allocation of earnings to a common limited partnership unit, as if exchanged, is equivalent to earnings allocated to a common share.

	Certain of the Company's unvested restricted common share awards contain non-forfeitable rights to dividends or dividend equivalents. The impact of these unvested restricted common share awards on earnings per share has been calculated using the two-class method whereby earnings are allocated to the unvested restricted common share awards based on dividends declared and the unvested restricted common shares' participation rights in undistributed earnings. Unvested restricted common shares that do not contain non-forfeitable rights to dividends or dividend equivalents are included in the diluted earnings per share computation if the effect is dilutive, using the treasury stock method.

Earnings_Per_Unit_of_the_Opera

Earnings Per Unit of the Operating Partnership (Tanger Properties Limited Partnership [Member])	12 Months Ended
	Dec. 31, 2014
Tanger Properties Limited Partnership [Member]
Earnings Per Unit of the Operating Partnership	Earnings Per Unit of the Operating Partnership

	The following table sets forth a reconciliation of the numerators and denominators in computing earnings per unit for the years ended December 31, 2014, 2013 and 2012 (in thousands, except per unit amounts). Note that all per unit amounts reflect a four-for-one split of the Operating Partnership's units in August 2013:


		2014			2013			2012
	Numerator
	Net income attributable to partners of the Operating Partnership	$	78,048		$	113,200		$	56,495

	Allocation of earnings to participating securities	(1,873		)	(1,129		)	(784		)
	Net income available to common unitholders of the Operating Partnership	$	76,175		$	112,071		$	55,711

	Denominator
	Basic weighted average common units	98,883			98,193			97,677

	Effect of notional units	—			849			846

	Effect of outstanding options and certain restricted common units	70			87			82

	Diluted weighted average common units	98,953			99,129			98,605


	Basic earnings per common unit:
	Net income	$	0.77		$	1.14		$	0.57


	Diluted earnings per common unit:
	Net income	$	0.77		$	1.13		$	0.57


	The notional units are considered contingently issuable common units and are included in earnings per unit if the effect is dilutive using the treasury stock method. Notional units granted in 2010 were converted into 933,769 restricted common units in January 2014. The restricted common units vested on December 31, 2014 and were considered participating securities through the vesting date.

	The computation of diluted earnings per unit excludes options to purchase common units when the exercise price is greater than the average market price of the common units for the period. The market price of a common unit is considered to be equivalent to the market price of a Company common share. For the years ended December 31, 2014 and 2012, 259,000 options and 17,600 options were excluded from the computation, respectively. There were no options excluded from the computation for the year end December 31, 2013.

	Certain of the Company's unvested restricted common share awards contain non-forfeitable rights to distributions or distribution equivalents. The impact of the corresponding unvested restricted unit awards on earnings per unit has been calculated using the two-class method whereby earnings are allocated to the unvested restricted unit awards based on distributions declared and the unvested restricted units' participation rights in undistributed earnings. Unvested restricted common units that do not contain non-forfeitable rights to dividends or dividend equivalents are included in the diluted earnings per unit computation if the effect is dilutive, using the treasury stock method.

EquityBased_Compensation

Equity-Based Compensation (Tanger Factory Outlet Centers, Inc [Member])	12 Months Ended
	Dec. 31, 2014
Tanger Factory Outlet Centers, Inc [Member]
Equity-Based Compensation	Equity-Based Compensation

	We have a shareholder approved equity-based compensation plan, the Incentive Award Plan of Tanger Factory Outlet Centers and Tanger Properties Limited Partnership (Amended and Restated as of April 4, 2014) (the "Plan"), which covers our independent directors, officers and our employees. For each common share issued by the Company, the Operating Partnership issues one corresponding unit of partnership interest to the Company's wholly owned subsidiaries. Therefore, when the Company grants an equity based award, the Operating Partnership treats each award as having been granted by the Operating Partnership. In the discussion below, the term "we" refers to the Company and the Operating Partnership together and the term "shares" is meant to also include corresponding units of the Operating Partnership.

	We may issue up to 15.4 million common shares under the Plan. Through December 31, 2014, we had granted 7,583,960 options, net of options forfeited; 4,573,683 restricted common share awards, net of restricted common shares forfeited or withheld for employees' tax obligations; and notional units which may result in the issuance of a maximum of 644,850 common shares. Shares remaining available for future issuance totaled 2,597,507 common shares. The amount and terms of the awards granted under the Plan were determined by the Board of Directors (or the Compensation Committee of the Board of Directors).

	In February 2014, the Company granted 282,500 options to non-executive employees of the Company. The exercise price of the options granted during the first quarter of 2014 was $32.02 which equaled the closing market price of the Company's common shares on the day prior to the grant date. The options expire 10 years from the date of grant and 20% of the options become exercisable in each of the first five years commencing one year from the date of grant. The fair value of each option grant is estimated on the date of grant using the Black-Scholes option pricing model with the following weighted-average assumptions: expected dividend yield 2.8%; expected life of 7 years; expected volatility of 32%; a risk-free rate of 2.46%; and forfeiture rates of 3.0% to 13.5% dependent upon the employee's position within the Company.

	In February 2014 and 2013, the Compensation Committee of the Company approved the general terms of the Tanger Factory Outlet Centers, Inc. 2014 Outperformance Plan (the “2014 OPP") and the 2013 Outperformance Plan (the “2013 OPP"). The 2014 OPP and 2013 OPP are long-term performance based incentive compensation plans pursuant to which award recipients may earn up to an aggregate of 329,700 and 315,150 restricted common shares, respectively, of the Company based on the Company’s absolute share price appreciation (or total shareholder return) and its share price appreciation relative to its peer group over a three year measurement period. The measurement period for the 2014 OPP is January 1, 2014 through December 31, 2016 and for the 2013 OPP is January 1, 2013 through December 31, 2015.

	Any shares earned at the end of the three year measurement period are subject to a time based vesting schedule, with 50% of the shares vesting in the January immediately following the measurement period, and the remaining 50% vesting in January one year thereafter, contingent upon continued employment with the Company through the vesting dates (unless terminated prior thereto (a) by the Company without cause, (b) by participant for good reason or (c) due to death or disability.

	The maximum number of shares will be earned under these plans if the Company both (a) achieves 35% or higher share price appreciation, inclusive of all dividends paid, over the respective three-year measurement periods and (b) is in the 70th or greater percentile of its peer group for total shareholder return over the respective three-year measurement periods. The maximum value of the awards that could be earned on December 31, 2015 and December 31, 2016, if the Company achieves or exceeds the 35% share price appreciation and is in the 70th or greater percentile of its peer group for total shareholder return over the applicable three-year measurement period, will equal approximately $13.3 million and $14.3 million, respectively.

	With respect to 70% of the performance shares, 33.33% of this portion of the award will be earned if the Company’s aggregate share price appreciation, inclusive of all dividends paid during this period, equals 25% over the three-year measurement period, 66.67% of the award will be earned if the Company’s aggregate share price appreciation, inclusive of all dividends paid during this period equals 30%, and 100% of this portion of the award will be earned if the Company’s aggregate share price appreciation, inclusive of all dividends paid during this period, equals 35% or higher.

	With respect to 30% of the performance shares, 33.33% of this portion of the award will be earned if the Company's share price appreciation inclusive of all dividends paid is in the 50th percentile of its peer group over the three-year measurement period, 66.67% of this portion of the award will be earned if the Company's share price appreciation inclusive of all dividends paid is in the 60th percentile of its peer group during this period, and 100% of this portion of the award will be earned if the Company's share price appreciation inclusive of all dividends paid is in the 70th percentile of its peer group or greater during this period. The peer group will be based on the SNL Equity REIT index.

	The performance shares will convert on a pro-rata basis by linear interpolation between share price appreciation thresholds, both for absolute share price appreciation and for relative share price appreciation amongst the Company's peer group. The share price targets will be reduced on a penny-for-penny basis with respect to any dividend payments made during the measurement period. The compensation expense is amortized using the graded vesting attribution method over the requisite service period. The fair value of the awards are calculated using a Monte Carlo simulation pricing model.

	During 2014, 2013 and 2012, the Company granted 373,960, 349,373 and 346,000 restricted common shares, respectively, to the independent directors and the senior executive officers. The independent directors' restricted common shares vest ratably over a three year period and the senior executive officers' restricted common shares vest ratably over a five year period. For the restricted shares issued to our chief executive officer during 2014 and 2013, the restricted share agreement requires him to hold the shares for a minimum of three years following each applicable vesting date thereof. Compensation expense related to the amortization of the deferred compensation is being recognized in accordance with the vesting schedule of the restricted shares. For all of the restricted common share awards described above, the grant date fair value of the award was determined based upon the closing market price of the Company's common shares on the day prior to the grant date and the associated compensation expense is being recognized in accordance with the vesting schedule of each grant.

	In addition, during February 2012, the Company granted 225,000 restricted common shares with a grant date fair value of $25.44 to Steven B. Tanger, our President and Chief Executive Officer, under the terms of his amended and restated Employment Agreement (the "Employment Agreement") signed on February 28, 2012. Under the terms of the Employment Agreement, the Company granted Mr. Tanger the following: 45,000 fully-vested common shares; 90,000 restricted common shares that vest ratably over five years based on Mr. Tanger's continued employment with the Company and 90,000 restricted common shares that vest ratably over five years based on Mr. Tanger's continued employment with the Company and the Company achieving certain minimum total returns to shareholders.

	During the first quarter of 2010, the Company's Compensation Committee approved the general terms of the Tanger Factory Outlet Centers, Inc. 2010 Multi-Year Performance Plan, (the "2010 Multi Year Performance Plan"). Under the 2010 Multi-Year Performance Plan, we granted 392,000 notional units, net of notional units forfeited, to award recipients as a group, which would convert into restricted common shares on a one-for one basis, one-for two basis, or one-for-three basis depending upon the amount by which the Company's common shares appreciated above a minimum level over a four year performance period ending December 31, 2013, not to exceed a total value of approximately $32.2 million. Based on the Company's performance over the four year measurement period, we issued 933,769 restricted common shares in January 2014 which vested on December 31, 2014 contingent on continued employment through the vesting date. In accordance with the plan, on December 31, 2013, we accrued approximately $3.8 million which represented cumulative dividends that would have been paid to the award recipients had the number of earned common shares been issued at the beginning of the performance period. The amount accrued was paid in January 2014.

	We recorded share based compensation expense in general and administrative expenses in the consolidated statements of operations for the years ended December 31, 2014, 2013 and 2012, respectively, as follows (in thousands):


			2014				2013				2012(1)
	Restricted common shares		$	9,978			$	8,354			$	8,497

	Notional unit performance awards		4,313				2,847				1,970

	Options		459				175				209

	Total share based compensation		$	14,750			$	11,376			$	10,676


	-1	For the year ended December 31, 2012, includes approximately $1.3 million of compensation expense related to 45,000 common shares that vested immediately upon grant related to the Employment Agreement described above.

	Share-based compensation expense capitalized as a part of rental property and deferred lease costs during the years ended December 31, 2014, 2013 and 2012 was $709,000, $367,000 and $368,000, respectively.

	Options outstanding at December 31, 2014 had the following weighted average exercise prices and weighted average remaining contractual lives:


					Options Outstanding								Options Exercisable
	Exercise prices				Options			Weighted average exercise price				Weighted remaining contractual life in years	Options	Weighted average exercise price
	$	26.06			113,000			$	26.06			6.09	52,600	$	26.06

	32.02				257,500			32.02				9.01	—	—

					370,500			$	30.2			8.12	52,600	$	26.06


	A summary of option activity under our Amended and Restated Incentive Award Plan as of December 31, 2014 and changes during the year then ended is presented below (aggregate intrinsic value amount in thousands):


	Options		Shares			Weighted-average exercise price				Weighted-average remaining contractual life in years		Aggregate intrinsic value
	Outstanding as of December 31, 2013		166,300			$	24.13

	Granted		282,500			32.02

	Exercised		(47,000	)		19.22

Forfeited		(31,300	)		31.11

Outstanding as of December 31, 2014		370,500			$	30.2			8.12		$	2,759


Vested and Expected to Vest as of
31-Dec-14		291,661			$	30.07			8.05		$	2,212


Exercisable as of December 31, 2014		52,600			$	26.06			6.02		$	610


The total intrinsic value of options exercised during the years ended December 31, 2014, 2013 and 2012 was $724,000, $905,000 and $716,000, respectively.

The following table summarizes information related to unvested restricted common shares outstanding as of December 31, 2014:


Unvested Restricted Common Shares		Number of shares			Weighted average grant date fair value
Outstanding at December 31, 2013		1,057,966			$	26.91

Granted		1,307,729			26.5

Vested		(1,266,245	)		24.67

Forfeited		—			—

Outstanding at December 31, 2014		1,099,450			$	29.01


The total value of restricted common shares vested during the years ended 2014, 2013 and 2012 was $46.6 million, $10.9 million and $10.6 million, respectively. We withheld shares with value equivalent to the employees' minimum statutory obligation for the applicable income and other employment taxes, and remitted the cash to the appropriate taxing authorities. The total number of shares withheld was 412,239 for 2014, and was based on the value of the restricted common shares on the vesting date as determined by our closing share price on the day prior to the vesting date. No shares were withheld during 2013 and 2012. Total amounts paid for the employees' tax obligation to taxing authorities was $15.5 million for 2014 and is reflected as a financing activity within the consolidated statements of cash flows.

As of December 31, 2014, there was $30.9 million of total unrecognized compensation cost related to unvested common share-based compensation arrangements granted under the Plan. That cost is expected to be recognized over a weighted-average period of 2.9 years.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income of the Company (Tanger Factory Outlet Centers, Inc [Member])	12 Months Ended
	Dec. 31, 2014
Tanger Factory Outlet Centers, Inc [Member]
Accumulated Other Comprehensive Income of the Company	Accumulated Other Comprehensive Income of the Company

	The following table presents changes in the balances of each component of accumulated comprehensive income for the year ended December 31, 2014, 2013, and 2012 (in thousands):


		Tanger Factory Outlet Centers, Inc. Accumulated Other Comprehensive Income									Noncontrolling Interest in Operating Partnership Accumulated Other Comprehensive Income
		Foreign Currency			Cash flow hedges			Total			Foreign Currency			Cash flow hedges			Total
	Balance December 31, 2011	$	—		$	1,535		$	1,535		$	—		$	(72	)	$	(72	)

	Amortization of cash flow hedges	—			(330		)	(330		)	—			(21		)	(21		)

	Unrealized loss on foreign currency translation adjustments	(5		)	—			(5		)	—			—			—

	Balance December 31, 2012	(5		)	1,205			1,200			—			(93		)	(93		)

	Amortization of cash flow hedges	—			(353		)	(353		)	—			(18		)	(18		)

	Unrealized loss on foreign currency translation adjustments	(4,708		)	—			(4,708		)	(260		)	—			(260		)

	Change in fair value of cash flow hedges	—			1,310			1,310			—			—			—

	Realized loss on foreign currency	123			—			123			6			72			78

	Balance December 31, 2013	(4,590		)	2,162			(2,428		)	(254		)	(39		)	(293		)

	Amortization of cash flow hedges	—			(852		)	(852		)	—			111			111

	Unrealized loss on foreign currency translation adjustments	(9,523		)	—			(9,523		)	(519		)	—			(519		)

	Change in fair value of cash flow hedges	—			(1,220		)	(1,220		)	—			(67		)	(67		)

	Balance December 31, 2014	$	(14,113	)	$	90		$	(14,023	)	$	(773	)	$	5		$	(768	)


	The following represents amounts reclassified out of accumulated other comprehensive income into earnings during the years ended December 31, 2014, 2013, and 2012, respectively:


	Details about Accumulated Other Comprehensive Income Components	Amount Reclassified from Accumulated Other Comprehensive Income									Affected Line Item in Statement of Operations
		2014			2013			2012
	Amortization of cash flow hedges	$	(852	)	$	(353	)	$	(330	)	Interest expense
	Realized loss on foreign currency	—			123			—			Interest expense

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income of the Operating Partnership (Tanger Properties Limited Partnership [Member])	12 Months Ended
	Dec. 31, 2014
Tanger Properties Limited Partnership [Member]
Accumulated Other Comprehensive Income of the Operating Partnership	Accumulated Other Comprehensive Income of the Operating Partnership

	The following table presents changes in the balances of each component of accumulated comprehensive income for the year ended December 31, 2014, 2013, and 2012 (in thousands):


		Foreign Currency			Cash flow hedges			Accumulated Other Comprehensive Income (Loss)
	Balance December 31, 2011	$	—		$	1,463		$	1,463

	Amortization of cash flow hedges	—			(351		)	(351		)

	Unrealized loss on foreign currency translation adjustments	(5		)	—			(5		)

	Balance December 31, 2012	(5		)	1,112			1,107

	Amortization of cash flow hedges	—			(371		)	(371		)

	Unrealized loss on foreign currency translation adjustments	(4,968		)	—			(4,968		)

	Change in fair value of cash flow hedges	—			1,382			1,382

	Realized loss on foreign currency	129			—			129

	Balance December 31, 2013	(4,844		)	2,123			(2,721		)

	Amortization of cash flow hedges	—			(741		)	(741		)

	Unrealized loss on foreign currency translation adjustments	(10,042		)	—			(10,042		)

	Change in fair value of cash flow hedges	—			(1,287		)	(1,287		)

	Balance December 31, 2014	$	(14,886	)	$	95		$	(14,791	)


	The following represents amounts reclassified out of accumulated other comprehensive income into earnings during the years ended December 31, 2014, 2013, and 2012 (in thousands):


	Details about Accumulated Other Comprehensive Income Components	Amount Reclassified from Accumulated Other Comprehensive Income									Affected Line Item in Statement of Operations
		2014			2013			2012
	Amortization of cash flow hedges	$	(741	)	$	(371	)	$	(351	)	Interest expense
	Realized loss on foreign currency	—			129			—			Interest expense

Supplementary_Income_Statement

Supplementary Income Statement Information	12 Months Ended
	Dec. 31, 2014
Supplementary Income Statement Information [Abstract]
Supplementary Income Statement Information	Supplementary Income Statement Information

	The following amounts are included in property operating expenses in income from continuing operations for the years ended December 31, 2014, 2013 and 2012 (in thousands):


		2014		2013		2012
	Advertising and promotion	$	25,431	$	24,035	$	23,051

	Common area maintenance	65,980		57,693		53,179

	Real estate taxes	25,644		21,976		19,842

	Other operating expenses	20,367		17,342		15,088

		$	137,422	$	121,046	$	111,160

Lease_Agreements

Lease Agreements	12 Months Ended
	Dec. 31, 2014
Leases [Abstract]
Lease Agreements	Lease Agreements

	We are the lessor to over 2,400 stores in our 36 consolidated outlet centers, under operating leases with initial terms that expire from 2015 to 2032. Future minimum lease receipts under non-cancellable operating leases as of December 31, 2014, excluding the effect of straight-line rent and percentage rentals, are as follows (in thousands):



	2015	$	243,870

	2016	219,461

	2017	190,130

	2018	156,436

	2019	119,864

	Thereafter	359,049

		$	1,288,810

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies

	Our non-cancelable operating leases, with initial terms in excess of one year, have terms that expire from 2014 to 2101. Annual rental payments for these leases totaled approximately $6.0 million, $5.8 million and $5.8 million, for the years ended December 31, 2014, 2013 and 2012, respectively. Minimum lease payments for the next five years and thereafter are as follows (in thousands):


	2015	$	5,807

	2016	5,871

	2017	5,590

	2018	5,567

	2019	5,734

	Thereafter	301,040

		$	329,609


	Commitments to complete construction of our ongoing capital projects and other capital expenditure requirements amounted to approximately $80.3 million at December 31, 2014. Commitments for construction represent only those costs contractually required to be paid by us. Our portion of contractual commitments for ongoing capital projects and other capital expenditure requirements related to our unconsolidated joint ventures amounted to approximately $33.5 million at December 31, 2014.

	We are also subject to legal proceedings and claims which have arisen in the ordinary course of our business and have not been finally adjudicated. In our opinion, the ultimate resolution of these matters is not expected to have a material effect on our results of operations, financial condition or cash flows.

Subsequent_Events

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2014
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events

	In January 2015, we purchased land for approximately $14.8 million and commenced construction on the development of an approximately 310,000 square foot outlet center. The outlet center will be located less than five miles south of Memphis in Southaven, Mississippi at the northeast quadrant of I-69/55 and Church Road, with visibility on I-69/55. The outlet center is being developed through a joint venture in which we own a controlling interest and is consolidated for financial reporting purposes.

Quarterly_Financial_Data_of_th

Quarterly Financial Data of the Company Unaudited)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data of the Company (Unaudited)	Quarterly Financial Data of the Company (Unaudited)

	The following table sets forth the Company's summarized quarterly financial information for the years ended December 31, 2014 and 2013 (unaudited and in thousands, except per common share data)(1). This information is not required for the Operating Partnership. Amounts presented for "total revenues" and "operating income" for all quarters presented, except the fourth quarter of 2014 which had not been previously disclosed, have been modified from original amounts disclosed in our Form 10-Qs due to reclassifications of certain amounts related to interest income and other income (expense) in the consolidated statement of operations from the caption "other income" to the caption "interest and other income" which is not included in total revenues or operating income:


			Year Ended December 31, 2014
			First Quarter		Second Quarter		Third Quarter		Fourth
									Quarter(2)
	Total revenues		$	102,783	$	102,212	$	105,189	$	108,374

	Operating income		28,368		32,625		35,283		35,587

	Net income		15,440		19,895		24,297		18,520

	Income attributable to Tanger Factory Outlet Centers, Inc.		14,616		18,850		23,003		17,542

	Income available to common shareholders of Tanger Factory Outlet Centers, Inc.		14,187		18,369		22,522		17,061


	Basic earnings per share available to common shareholders:
	Net income		$	0.15	$	0.2	$	0.24	$	0.18



	Diluted earnings per share available to common shareholders:
	Net income		$	0.15	$	0.2	$	0.24	$	0.18


	-1	Quarterly amounts may not add to annual amounts due to the effect of rounding on a quarterly basis.

	-2	For the fourth quarter, net income includes a $7.5 million gain on the sale of our Lincoln City outlet center and a $13.1 million loss on early extinguishment of debt related to the early redemption of senior notes due November 2015.



			Year Ended December 31, 2013
			First Quarter		Second Quarter		Third Quarter (2)		Fourth Quarter
	Total revenues		$	88,688	$	91,002	$	97,804	$	107,325

	Operating income		28,515		29,843		33,431		35,916

	Net income		16,229		17,776		56,180		23,136

	Income attributable to Tanger Factory Outlet Centers, Inc.		15,439		16,888		53,294		21,936

	Income available to common shareholders of Tanger Factory Outlet Centers, Inc.		15,245		16,657		52,685		21,706


	Basic earnings per share available to common shareholders:
	Net income		$	0.16	$	0.18	$	0.56	$	0.23


	Diluted earnings per share available to common shareholders:
	Net income		$	0.16	$	0.18	$	0.56	$	0.23


	-1	Quarterly amounts may not add to annual amounts due to the effect of rounding on a quarterly basis.

	-2	For the third quarter, net income includes a $26.0 million gain on our previously held interest in Deer Park upon the acquisition of an additional one-third interest in August 2013, and the consolidation of Deer Park into our financial statements.

Schedule_III

Schedule III	12 Months Ended
	Dec. 31, 2014
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
Real Estate and Accumulated Depreciation Disclosure

	TANGER FACTORY OUTLET CENTERS, INC. AND SUBSIDIARIES
	TANGER PROPERTIES LIMITED PARTNERSHIP AND SUBSIDIARIES
	SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION
	For the Year Ended December 31, 2014 (in thousands)

	Description								Initial cost to Company						Costs Capitalized						Gross Amount Carried at Close of Period
															Subsequent to Acquisition						December 31, 2014 (1)
															(Improvements)
	Outlet Center Name		Location		Encum-brances				Land			Buildings,			Land			Buildings,			Land			Buildings,			Total			Accumulated			Date of		Life Used to
												Improve-ments & Fixtures						Improve-ments & Fixtures						Improve-ments & Fixtures						Depreciation			Construction or Acquisition		Compute
																																			Depreciation
																																			in Income
																																			Statement
	Atlantic City		Atlantic City, NJ		$	49,691			$	—		$	125,988		$	—		$	3,142		$	—		$	129,130		$	129,130		$	16,019		2011 (3)		(2)

	Barstow		Barstow, CA		—				3,281			12,533			—			21,831			3,281			34,364			37,645			18,948			1995		(2)

	Blowing Rock		Blowing Rock, NC		—				1,963			9,424			—			8,116			1,963			17,540			19,503			8,287			1997 (3)		(2)

	Branson		Branson, MO		—				4,407			25,040			396			20,774			4,803			45,814			50,617			25,996			1994		(2)

	Charleston		Charleston, SC		—				10,353			48,877			—			12,532			10,353			61,409			71,762			21,405			2006		(2)

	Commerce II		Commerce, GA		—				1,262			14,046			707			33,474			1,969			47,520			49,489			27,230			1995		(2)

	Deer Park		Deer Park, NY		148,839				82,413			173,044			—			2,534			82,413			175,578			257,991			9,925			2013 (3)		(2)

	Foley		Foley, AL		—				4,400			82,410			693			40,769			5,093			123,179			128,272			42,731			2003 (3)		(2)

	Foxwoods		Mashantucket, CT		25,235				—			9,371			—			67,727			—			77,098			77,098			—			(4)		(4)

	Gonzales		Gonzales, LA		—				679			15,895			—			35,438			679			51,333			52,012			25,757			1992		(2)

	Grand Rapids		Grand Rapids, MI		—				—			21,119			—			—			—			21,119			21,119			—			(4)		(4)

	Hershey		Hershey, PA		29,670				3,673			48,186			—			2,144			3,673			50,330			54,003			6,903			2011(3)		(2)

	Hilton Head I		Bluffton, SC		—				4,753			—			—			32,959			4,753			32,959			37,712			7,155			2011		(2)

	Hilton Head II		Bluffton, SC		—				5,128			20,668			—			9,303			5,128			29,971			35,099			11,611			2003 (3)		(2)

	Howell		Howell, MI		—				2,250			35,250			—			11,306			2,250			46,556			48,806			18,526			2002 (3)		(2)

	Jeffersonville		Jeffersonville, OH		—				2,752			111,276			—			6,241			2,752			117,517			120,269			14,170			2011(3)		(2)

	Kittery I		Kittery, ME		—				1,242			2,961			229			2,380			1,471			5,341			6,812			4,452			1986		(2)

	Kittery II		Kittery, ME		—				1,451			1,835			—			874			1,451			2,709			4,160			2,354			1989		(2)

	Lancaster		Lancaster, PA		—				3,691			19,907			—			17,534			3,691			37,441			41,132			24,256			1994 (3)		(2)

	Locust Grove		Locust Grove, GA		—				2,558			11,801			—			26,837			2,558			38,638			41,196			22,279			1994		(2)

	Mebane		Mebane, NC		—				8,821			53,362			—			1,286			8,821			54,648			63,469			14,046			2010		(2)

	Myrtle Beach Hwy 17		Myrtle Beach, SC		—				—			80,733			—			5,968			—			86,701			86,701			20,728			2009 (3)		(2)

	Myrtle Beach Hwy 501		Myrtle Beach, SC		—				10,236			57,094			—			36,438			10,236			93,532			103,768			31,510			2003 (3)		(2)

	Nags Head		Nags Head, NC		—				1,853			6,679			—			5,212			1,853			11,891			13,744			7,107			1997 (3)		(2)

	Ocean City		Ocean City, MD		17,926				—			16,334			—			7,822			—			24,156			24,156			3,788			2011(3)		(2)



TANGER FACTORY OUTLET CENTERS, INC. AND SUBSIDIARIES
TANGER PROPERTIES LIMITED PARTNERSHIP AND SUBSIDIARIES
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION
For the Year Ended December 31, 2014 (in thousands)

Description								Initial cost to Company						Costs Capitalized						Gross Amount Carried at Close of Period
														Subsequent to Acquisition						December 31, 2014 (1)
														(Improvements)
Outlet Center Name		Location		Encum-brances				Land			Buildings,			Land			Buildings,			Land			Buildings,			Total			Accumulated			Date of		Life Used to
											Improve-ments & Fixtures						Improve-ments & Fixtures						Improve-ments & Fixtures						Depreciation			Construction		Compute
																																		Depreciation
																																		in Income
																																		Statement
Park City		Park City, UT		—				6,900			33,597			343			25,592			7,243			59,189			66,432			19,135			2003 (3)		(2)

Pittsburgh		Pittsburgh, PA		—				5,528			91,288			3			13,385			5,531			104,673			110,204			34,884			2008		(2)

Rehoboth Beach		Rehoboth Beach, DE		—				20,600			74,209			1,875			33,799			22,475			108,008			130,483			36,318			2003 (3)		(2)

Riverhead		Riverhead, NY		—				—			36,374			6,152			104,446			6,152			140,820			146,972			74,904			1993		(2)

San Marcos		San Marcos, TX		—				1,801			9,440			16			48,488			1,817			57,928			59,745			35,861			1993		(2)

Sanibel		Sanibel, FL		—				4,916			23,196			—			12,563			4,916			35,759			40,675			19,505			1998 (3)		(2)

Sevierville		Sevierville, TN		—				—			18,495			—			46,766			—			65,261			65,261			30,671			1997 (3)		(2)

Seymour		Seymour, IN		—				200			—			—			—			200			—			200			—			1994		(2)

Terrell		Terrell, TX		—				523			13,432			—			9,519			523			22,951			23,474			16,802			1994		(2)

Tilton		Tilton, NH		—				1,800			24,838			29			10,360			1,829			35,198			37,027			13,454			2003 (3)		(2)

Tuscola		Tuscola, IL		—				1,600			15,428			43			3,697			1,643			19,125			20,768			7,477			2003 (3)		(2)

West Branch		West Branch, MI		—				319			3,428			120			7,796			439			11,224			11,663			6,792			1991		(2)

Westbrook		Westbrook, CT		—				6,264			26,991			4,233			5,706			10,497			32,697			43,194			12,628			2003 (3)		(2)

Williamsburg		Williamsburg, IA		—				706			6,781			718			17,187			1,424			23,968			25,392			18,641			1991		(2)

				$	271,361			$	208,323		$	1,381,330		$	15,557		$	751,945		$	223,880		$	2,133,275		$	2,357,155		$	712,255


-1	Aggregate cost for federal income tax purposes is approximately $2.4 billion.

-2	We generally use estimated lives of 33 years for buildings and 15 years for land improvements. Tenant finishing allowances are depreciated over the initial lease term. Building, improvements & fixtures includes amounts included in construction in progress on the consolidated balance sheet.

-3	Represents year acquired.

-4	Under construction.
TANGER FACTORY OUTLET CENTERS, INC. and SUBSIDIARIES
TANGER PROPERTIES LIMITED PARTNERSHIP and SUBSIDIARIES
SCHEDULE III - (Continued)
REAL ESTATE AND ACCUMULATED DEPRECIATION
For the Year Ended December 31, 2014
(in thousands)

The changes in total real estate for the years ended December 31, 2014, 2013 and 2012 are as follows:



		2014				2013				2012
Balance, beginning of year		$	2,249,819			$	1,947,352			$	1,916,045

Acquisitions		—				255,107				—

Improvements		160,560				50,283				34,633

Dispositions and reclasses to rental property held for sale		(146,776		)		(2,923		)		(3,326		)
Balance, end of year		$	2,263,603			$	2,249,819			$	1,947,352


The changes in accumulated depreciation for the years ended December 31, 2014, 2013 and 2012 are as follows:



		2014				2013				2012
Balance, beginning of year		$	654,631			$	582,859			$	512,485

Depreciation for the period		80,057				74,695				73,700

Dispositions and reclasses to rental property held for sale		(72,452		)		(2,923		)		(3,326		)
Balance, end of year		$	662,236			$	654,631			$	582,859

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Principles of Consolidation

Principles of Consolidation - The consolidated financial statements of the Company include its accounts and its consolidated subsidiaries, as well as the Operating Partnership and its consolidated subsidiaries. The consolidated financial statements of the Operating Partnership include its accounts and its consolidated subsidiaries. Intercompany balances and transactions have been eliminated in consolidation.

We evaluate our real estate joint ventures in accordance with the Consolidation guidance of the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC"). As a result of our qualitative assessment, we concluded that our Westgate and Savannah joint ventures are Variable Interest Entities ("VIE") and none of our other joint ventures are VIEs. Westgate and Savannah are each considered a VIE because the voting rights are disproportionate to the economic interests.

After making the determination that Westgate and Savannah are VIEs, we performed an assessment to determine if we would be considered the primary beneficiary and thus be required to consolidate the balance sheets and results of operations. This assessment was based upon whether we had the following:

The power to direct the activities of the VIE that most significantly impact the entity's economic performance

The obligation to absorb losses of the entity that could potentially be significant to the VIE or the right to receive benefits from the entity that could potentially be significant to the VIE

The operating, development, leasing, and management agreements of Westgate and Savannah provide that the activities that most significantly impact the economic performance of the ventures require unanimous consent. Accordingly, we determined that we do not have the power to direct the significant activities that affect the economic performance of the ventures and therefore, have applied the equity method of accounting. Our investment in Westgate was approximately $14.3 million and in Savannah was approximately $46.5 million as of December 31, 2014. We are unable to estimate our maximum exposure to loss at this time because our guarantees are limited and based on the future operating performance of Westgate and Savannah.

Noncontrolling interests

Noncontrolling interests - In the Company's consolidated financial statements, the “Noncontrolling interests in Operating Partnership” reflects the Non-Company LPs percentage ownership of the Operating Partnership's units. The noncontrolling interests in other consolidated partnerships consist of outside equity interests in partnerships not wholly-owned by the Company or the Operating Partnership that are consolidated with the financial results of the Company and Operating Partnership because the Operating Partnership exercises control over the entities that own the properties. Noncontrolling interests are initially recorded in the consolidated balance sheets at fair value based upon purchase price allocations. Income is allocated to the noncontrolling interests based on their respective ownership interest.

Use of Estimates

Use of Estimates - The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Estimates are used in the calculations of impairment losses, costs capitalized to originate operating leases, costs incurred for the construction and development of properties, and the values of deferred lease costs and other intangibles related to the acquisition of properties. Actual results could differ from those estimates.

Operating Segments

Operating Segments - We focus exclusively on developing, acquiring, owning, operating, and managing outlet shopping centers. We aggregate the financial information of all outlet centers into one reportable operating segment because the outlet centers all have similar economic characteristics and provide similar products and services to similar types and classes of customers

Rental Property

Rental Property - Rental properties are recorded at cost less accumulated depreciation. Buildings, improvements and fixtures consist primarily of permanent buildings and improvements made to land such as infrastructure and costs incurred in providing rental space to tenants.

The pre-construction stage of project development involves certain costs to secure land control and zoning and complete other initial tasks essential to the development of the project. These costs are transferred from other assets to construction in progress when the pre-construction tasks are completed. Costs of unsuccessful pre-construction efforts are charged to operations when the project is no longer probable.

We also capitalize other costs incurred for the construction and development of properties, including interest, real estate taxes and salaries and related costs associated with employees directly involved. Capitalization of costs commences at the time the development of the property becomes probable and ceases when the property is substantially completed and ready for its intended use. We consider a construction project as substantially completed and ready for its intended use upon the completion of tenant improvements. We cease capitalization on the portion that is substantially completed and occupied or held available for occupancy, and capitalize only those costs associated with the portion under construction. The amount of salaries and related costs capitalized for the construction and development of properties, which during 2014, 2013 and 2012 amounted to $1.6 million, $2.2 million and $1.8 million, respectively, is based on our estimate of the amount of costs directly related to the construction or development of these assets.

Interest costs are capitalized during periods of active construction for qualified expenditures based upon interest rates in place during the construction period until construction is substantially complete. This includes interest incurred on funds invested in or advanced to unconsolidated joint ventures with qualifying development activities. Interest costs capitalized during 2014, 2013 and 2012 amounted to approximately $5.1 million, $1.6 million and $1.2 million, respectively.

Depreciation is computed on the straight-line basis over the estimated useful lives of the assets. We generally use estimated lives of 33 years for buildings and improvements, 15 years for land improvements and 7 years for equipment. Tenant finishing allowances are amortized over the life of the associated lease. Capitalized interest costs are amortized over lives which are consistent with the constructed assets. Expenditures for ordinary maintenance and repairs are charged to operations as incurred while significant renovations and improvements which improve and/or extend the useful life of the asset are capitalized and depreciated over their estimated useful life. Depreciation expense related to rental property included in net income for each of the years ended December 31, 2014, 2013 and 2012 was $80.1 million, $74.7 million and $73.7 million, respectively.

In accordance with accounting guidance for business combinations, we allocate the purchase price of acquisitions based on the fair value of land, building, tenant improvements, debt and deferred lease costs and other intangibles, such as the value of leases with above or below market rents, origination costs associated with the in-place leases, the value of in-place leases and tenant relationships, if any. We depreciate the amount allocated to building, deferred lease costs and other intangible assets over their estimated useful lives, which range up to 33 years. The values of the above and below market leases are amortized and recorded as either an increase (in the case of below market leases) or a decrease (in the case of above market leases) to rental income over the remaining term of the associated lease. The values of below market leases that are considered to have renewal periods with below market rents are amortized over the remaining term of the associated lease plus the renewal periods when the renewal is deemed probable to occur. The value associated with in-place leases is amortized over the remaining lease term and tenant relationships is amortized over the expected term, which includes an estimated probability of the lease renewal. If a tenant terminates its lease prior to the contractual termination of the lease and no rental payments are being made on the lease, any unamortized balance of the related intangibles is written off. The tenant improvements and origination costs are amortized as an expense over the remaining life of the lease (or charged against earnings if the lease is terminated prior to its contractual expiration date). We assess fair value based on estimated cash flow projections that utilize appropriate discount and capitalization rates and available market information. These cash flow projections may be derived from various observable and unobservable inputs and assumptions. Also, we may utilize third-party valuation specialists. As a part of acquisition accounting, the amount by which the fair value of our previously held equity method investment exceeds the carrying book value is recorded as a gain on previously held interest in acquired joint venture. Direct costs to acquire existing outlet centers are expensed as incurred.

Cash and Cash Equivalents

Cash and Cash Equivalents - All highly liquid investments with an original maturity of three months or less at the date of purchase are considered to be cash equivalents. Cash balances at a limited number of banks may periodically exceed insurable amounts. We believe that we mitigate our risk by investing in or through major financial institutions. Recoverability of investments is dependent upon the performance of the issuer. At December 31, 2014 and 2013, respectively, we had cash equivalent investments in highly liquid money market accounts at major financial institutions of $671,000 and $670,000, respectively.

Deferred Charges

Deferred Charges - Deferred charges includes deferred lease costs and other intangible assets consisting of fees and costs incurred to originate operating leases and are amortized over the expected lease term. Deferred lease costs capitalized, including amounts paid to third-party brokers and salaries and related costs of employees directly involved in originating leases, during 2014, 2013 and 2012 were approximately $6.2 million, $4.0 million and $5.1 million, respectively. Of the amounts capitalized during 2014, 2013 and 2012, approximately $5.1 million, $2.9 million, and $4.5 million, respectively, were related to salaries and related costs. The amount of salaries and related costs capitalized is based on our estimate of the time and amount of costs directly related to originating leases. Deferred lease costs and other intangible assets also include the value of leases and origination costs deemed to have been acquired in real estate acquisitions.

Deferred financing costs include fees and costs incurred to obtain long-term financing and are amortized over the terms of the respective loans. Unamortized deferred financing costs are charged to expense when debt is retired before the maturity date.

Captive Insurance

Captive Insurance - We have a wholly-owned captive insurance company that is responsible for losses up to certain deductible levels per occurrence for property damage (including wind damage from hurricanes) prior to third-party insurance coverage. Insurance losses are reflected in property operating expenses and include estimates of costs incurred, both reported and unreported.

Impairment of Long-Lived Assets and Real Estate Assets Held For Sale

Impairment of Long-Lived Assets - Rental property held and used by us is reviewed for impairment in the event that facts and circumstances indicate the carrying amount of an asset may not be recoverable. In such an event, we compare the estimated future undiscounted cash flows associated with the asset to the asset's carrying amount, and if less, recognize an impairment loss in an amount by which the carrying amount exceeds its fair value. Fair value is determined using a market approach whereby we consider the prevailing market income capitalization rates and sales data for transactions involving similar assets. We recognized no impairment losses during the years ended December 31, 2014, 2013, and 2012, respectively. We believe there are no unrecorded impairment losses as of December 31, 2014, 2013 and 2012, respectively.

Rental Property Held For Sale - Rental properties designated as held for sale are stated at the lower of their carrying value or their fair value less costs to sell. We classify rental property as held for sale when our Board of Directors approves the sale of the assets and it meets the requirements of current accounting guidance. Subsequent to this classification, no further depreciation is recorded on the assets.

Impairment of Investments

Impairment of Investments - On a periodic basis, we assess whether there are any indicators that the value of our investments in unconsolidated joint ventures may be impaired. An investment is impaired only if management's estimate of the value of the investment is less than the carrying value of the investments, and such decline in value is deemed to be other than temporary. To the extent impairment has occurred, the loss shall be measured as the excess of the carrying amount of the investment over the value of the investment. Our estimates of value for each joint venture investment are based on a number of assumptions that are subject to economic and market uncertainties including, among others, demand for space, competition for tenants, changes in market rental rates and operating costs of the property. As these factors are difficult to predict and are subject to future events that may alter our assumptions, the values estimated by us in our impairment analysis may not be realized. As of December 31, 2014 and 2013, we do not believe that any of our equity investments were impaired.

Derivatives

Derivatives - We selectively enter into interest rate protection agreements to mitigate the impact of changes in interest rates on our variable rate borrowings. The notional amounts of such agreements are used to measure the interest to be paid or received and do not represent the amount of exposure to loss. None of these agreements are used for speculative or trading purposes.

We recognize all derivatives as either assets or liabilities in the consolidated balance sheets and measure those instruments at their fair value. We also measure the effectiveness, as defined by the relevant accounting guidance, of all derivatives. We formally document our derivative transactions, including identifying the hedge instruments and hedged items, as well as our risk management objectives and strategies for entering into the hedge transaction. At inception and on a quarterly basis thereafter, we assess the effectiveness of derivatives used to hedge transactions. If a cash flow hedge is deemed effective, we record the change in fair value in other comprehensive income. If after assessment it is determined that a portion of the derivative is ineffective, then that portion of the derivative's change in fair value will be immediately recognized in earnings

Income Taxes

Income Taxes - We operate in a manner intended to enable the Company to qualify as a REIT under the Internal Revenue Code. A REIT which distributes at least 90% of its taxable income to its shareholders each year and which meets certain other conditions is not taxed on that portion of its taxable income which is distributed to its shareholders. We intend to continue to qualify as a REIT and to distribute substantially all of the Company's taxable income to its shareholders. Accordingly, no provision has been made in the Company's consolidated financial statements for Federal income taxes. As a partnership, the allocated share of income or loss for the year with respect to the Operating Partnership is included in the income tax returns for the partners; accordingly, no provision has been made for Federal income taxes in the Operating Partnership's consolidated financial statements. In addition, we continue to evaluate uncertain tax positions. The tax years 2011 - 2014 remain open to examination by the major tax jurisdictions to which we are subject.

With regard to the Company's unconsolidated Canadian joint ventures, deferred tax assets result principally from depreciation deducted under GAAP that exceed capital cost allowances claimed under Canadian tax rules. A valuation allowance is provided if we believe all or some portion of the deferred tax asset may not be realized. We have determined that a full valuation allowance is required as we believe none of the deferred tax assets will be realized.

For income tax purposes, distributions paid to the Company's common shareholders consist of ordinary income, capital gains, return of capital or a combination thereof. Dividends per share for the years ended December 31, 2014, 2013 and 2012 were taxable as follows:

Common dividends per share:

2014

2013

2012

Ordinary income

0.7645

0.7894

0.8293

Capital gain

—

0.0115

—

Return of capital

0.1805

0.0841

0.0007

0.945

0.885

0.83

Revenue Recognition

Revenue Recognition - Base rentals are recognized on a straight-line basis over the term of the lease. Straight-line rent adjustments recorded in other assets were approximately $34.6 million and $30.9 million as of December 31, 2014 and 2013, respectively. As a provision of a tenant lease, if we make a cash payment to the tenant for purposes other than funding the construction of landlord assets, we defer the amount of such payments as a lease incentive. We amortize lease incentives as a reduction of base rental revenue over the term of the lease. Substantially all leases contain provisions which provide additional rents based on tenants' sales volume (“percentage rentals”) and reimbursement of the tenants' share of advertising and promotion, common area maintenance, insurance and real estate tax expenses. Percentage rentals are recognized when specified targets that trigger the contingent rent are met. Expense reimbursements are recognized in the period the applicable expenses are incurred. Payments received from the early termination of leases are recognized as revenue from the time the payment is receivable until the tenant vacates the space. The values of the above and below market leases are amortized and recorded as either an increase (in the case of below market leases) or a decrease (in the case of above market leases) to rental income over the remaining term of the associated lease. If a tenant terminates its lease prior to the original contractual termination of the lease and no rental payments are being made on the lease, any unamortized balance of the related above or below market lease value will be written off.

We receive development, leasing, loan guarantee, management and marketing fees from third parties and unconsolidated affiliates for services provided to properties held in joint ventures. Development fees are recognized as revenue when earned over the development period. Leasing fees are charged for newly executed leases and lease renewals, and are recognized as revenue when earned. Profits from development and leasing fees received from unconsolidated affiliates are recognized as revenue to the extent of the third-party partners' ownership interest. Profits earned to the extent of our ownership interest are recorded as a reduction to our investment in the unconsolidated affiliate. Loan guarantee fees are recognized over the term of the guarantee. Management fees are charged as a percentage of revenues (as defined in the management agreement) and are recognized as revenue when earned. Marketing fees are charged as a percentage of marketing expenses incurred by the property. Fees recognized from these activities are shown as management, leasing and other services in our consolidated statements of operations. Fees received from consolidated joint ventures are eliminated in consolidation.

Concentration of Credit Risk

Concentration of Credit Risk - We perform ongoing credit evaluations of our tenants. Although the tenants operate principally in the retail industry, the properties are geographically diverse. No single tenant accounted for 10% or more of combined base and percentage rental income or gross leasable area during 2014, 2013 or 2012.

Accounting for Equity-Based Compensation

Accounting for Equity-Based Compensation - We may issue non-qualified options and other equity-based awards under the Amended and Restated Incentive Award Plan (the "Incentive Award Plan"). We account for our equity-based compensation plan under the fair value provisions of the relevant accounting guidance.

Foreign Currency Transactions and Translations Policy

Foreign Currency Translation - We have entered into a co-ownership agreement with RioCan Real Estate Investment Trust to develop and acquire outlet centers in Canada for which the functional currency is the local currency. The assets and liabilities related to our investments in Canada are translated from their functional currency into U.S. Dollars at the rate of exchange in effect on the balance sheet date. Income statement accounts are translated using the average exchange rate for the period. Our share of unrealized gains and losses resulting from the translation of these financial statements are reflected in shareholders' equity as a component of accumulated other comprehensive loss in the Company's consolidated balance sheets.

New Accounting Pronouncements

New Accounting Pronouncements - In November 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-17, "Business Combinations (Topic 805): Pushdown Accounting" ("ASU 2014-17"). ASU 2014-17 provides an acquired entity with an option to apply pushdown accounting in its separate financial statements upon occurrence of an event in which an acquirer obtains control of the acquired entity. The acquired entity may elect the option to apply pushdown accounting in the reporting period in which the change-in-control event occurs. If pushdown accounting is not applied in the reporting period in which the change-in-control event occurs, an acquired entity will have the option to elect to apply pushdown accounting in a subsequent reporting period as a change in accounting principle in accordance with ASC Topic 250, "Accounting Changes and Error Corrections". If pushdown accounting is applied to an individual change-in-control event, that election is irrevocable. ASU 2014-17 also requires an acquired entity that elects the option to apply pushdown accounting in its separate financial statements to disclose information in the current reporting period that enables users of financial statements to evaluate the effect of pushdown accounting. We have adopted the amendments in ASU 2014-17, effective November 18, 2014, as the amendments in the update are effective upon issuance. The adoption did not have an impact on our consolidated financial statements.

In August 2014, the FASB issued ASU No. 2014-15 Presentation of Financial Statements—Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern, which requires management to evaluate whether there are conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern, and to provide certain disclosures when it is probable that the entity will be unable to meet its obligations as they become due within one year after the date that the financial statements are issued. ASU 2014-15 is effective for the annual period ended December 31, 2016 and for annual periods and interim periods thereafter with early adoption permitted. We are currently evaluating the new guidance to determine the impact it may have on our consolidated financial statements.

In April 2014, the FASB issued 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 (the "Final Standard"). Under the Final Standard, only disposals representing a strategic shift in operations (e.g., a disposal of a major geographic area, a major line of business or a major equity method investment) will be presented as discontinued operations. Under current GAAP, companies that sell a single investment property are generally required to report the sale as a discontinued operation, which requires the companies to reclassify earnings from continuing operations for all periods presented.The Final Standard is effective in the first quarter of 2015 for public entities with calendar year ends. The FASB will permit early adoption of the Final Standard, beginning in the first quarter of 2014, but only for disposals or classifications as held for sale that have not been reported in financial statements previously issued or available for issuance. We early adopted the standard in the first quarter of 2014. In the fourth quarter of 2014, we entered into an agreement with a private buyer to sell our outlet center in Lincoln City, Oregon along with an option agreement for the buyer to purchase an additional four properties. Subsequently, the buyer purchased the Lincoln City outlet center in December 2014. The buyer now has the option to purchase three properties during the first quarter of 2015 and, should it acquire those properties, one additional property during the first quarter of 2016. The four additional properties subject to the option agreement have been classified as rental property held for sale in our consolidated balance sheets as of December 31, 2014 and their results of operations have remained in continuing operations for both the sold and held for sale rental properties. See Note 4 Disposition of Properties and Properties Held for Sale for further information.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes the revenue recognition requirements in ASC 605, Revenue Recognition. This ASU is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. We are required to adopt the new pronouncement in the first quarter of fiscal 2017 using one of two retrospective application methods. We are currently evaluating the new guidance to determine the impact it may have on our consolidated financial statements.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Tax Treatment of Common Dividends Per Share for Federal Tax Purposes	For income tax purposes, distributions paid to the Company's common shareholders consist of ordinary income, capital gains, return of capital or a combination thereof. Dividends per share for the years ended December 31, 2014, 2013 and 2012 were taxable as follows:


	Common dividends per share:	2014			2013			2012
	Ordinary income	$	0.7645		$	0.7894		$	0.8293

	Capital gain	—			0.0115			—

	Return of capital	0.1805			0.0841			0.0007

		$	0.945		$	0.885		$	0.83


	The following reconciles net income available to the Company's shareholders to taxable income available to common shareholders for the years ended December 31, 2014, 2013 and 2012:


		2014			2013			2012
	Net income available to the Company's shareholders	$	74,011		$	107,557		$	53,228

	Book/tax difference on:
	Depreciation and amortization	20,575			(10,697		)	16,034

	Loss on sale or disposal of real estate	(9,524		)	(1,805		)	(1,543		)
	Equity in earnings from unconsolidated joint ventures	12,910			5,601			5,037

	Share-based payment compensation	(37,193		)	(3,818		)	(6,298		)
	Gain on previously held interest in acquired joint venture	—			(24,710		)	—

	Other differences	1,205			(5,823		)	(850		)

	Taxable income available to common shareholders	$	61,984		$	66,305		$	65,608

GAAP Reconciliation of Net Income to Taxable Income	The following reconciles net income available to the Company's shareholders to taxable income available to common shareholders for the years ended December 31, 2014, 2013 and 2012:


		2014			2013			2012
	Net income available to the Company's shareholders	$	74,011		$	107,557		$	53,228

	Book/tax difference on:
	Depreciation and amortization	20,575			(10,697		)	16,034

	Loss on sale or disposal of real estate	(9,524		)	(1,805		)	(1,543		)
	Equity in earnings from unconsolidated joint ventures	12,910			5,601			5,037

	Share-based payment compensation	(37,193		)	(3,818		)	(6,298		)
	Gain on previously held interest in acquired joint venture	—			(24,710		)	—

	Other differences	1,205			(5,823		)	(850		)

	Taxable income available to common shareholders	$	61,984		$	66,305		$	65,608

Acquisition_of_Rental_Property1

Acquisition of Rental Property (Tables)	12 Months Ended
	Dec. 31, 2014
Acquisition of Rental Property [Abstract]
Schedule of Business Acquisitions	The following table illustrates the fair value of the total consideration transferred and the amounts of the identifiable assets acquired and liabilities assumed at the acquisition date (in thousands):



	Cash transferred	$	13,939

	Common limited partnership units issued	13,981

	Fair value of total consideration transferred to acquire one-third interest	27,920

	Fair value of our previously held one-third interest	27,920

	Fair value of noncontrolling interest	27,920

	Fair value of net assets acquired	$	83,760

Schedule of Purchase Price Allocation	The aggregate purchase price of the property was allocated as follows:



			Fair Value			Weighted-Average Amortization Period (in years)
			(in thousands)
	Land		$	82,413

	Buildings, improvements and fixtures		172,694

	Deferred lease costs and other intangibles
	Above market lease value		18,807			11.9

	Below market lease value		(12,658		)	18.5
	Lease in place value		28,846			7.6

	Tenant relationships		27,594			19

	Lease and legal costs		1,724			8.9

	Total deferred lease costs and other intangibles, net		64,313

	Other identifiable assets acquired and liabilities assumed, net		2,265

	Debt		(237,925		)
	Total fair value of net assets acquired		$	83,760

Business Acquisition, Pro Forma Information	The following unaudited condensed pro forma financial information for the years ended December 31, 2013 and 2012 is presented as if the acquisition had been consummated as of January 1, 2012, the beginning of the previous reporting period (in thousands, except per share data):


			(unaudited)
			(Pro forma)
			Year ended
			December 31,
			2013			2012
	Total Revenue		$	408,333		$	381,388

	Income from continuing operations		85,836			78,347

	Net income attributable to Tanger Factory Outlet Centers, Inc.		80,621			73,219

	Basic earnings per common share		0.86			0.8

	Diluted earnings per common share		0.86			0.79

Disposition_of_Properties_and_1

Disposition of Properties and Properties Held for Sale (Tables)	12 Months Ended
	Dec. 31, 2014
Disposition of Properties and Properties Held for Sale [Abstract]
Disclosure of Long Lived Assets Held-for-sale	The carrying values of the assets of those properties that remained unsold at December 31, 2014 totaled $46.0 million and were comprised of the following (in thousands):



		2014
	Rental property, net	$	43,532

	Deferred lease costs and other intangibles, net	757

	Prepaids and other assets	1,716

	Rental property held for sale	$	46,005



	Property	Location		Date Sold	Square Feet	Net Sales Price		Gain on Sale(in 000's)
					(in 000's)	(in 000's)
	Lincoln City	Lincoln City, OR		12/22/14	270	$	38,993	$	7,513

	Properties held for sale	Various		—	712	—		—

					982	$	38,993	$	7,513

Investments_in_Unconsolidated_1

Investments in Unconsolidated Real Estate Joint Ventures (Tables)	12 Months Ended
	Dec. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Equity Method Investments	At December 31, 2014 and 2013, we were members of the following unconsolidated real estate joint ventures:



	As of December 31, 2014
	Joint Venture		Outlet Center Location		Ownership %			Square Feet		Carrying Value of Investment (in millions)			Total Joint Venture Debt
								(in 000's)					(in millions)
	Galveston/Houston		Texas City, TX		50	%		353		$	1.3		$	65

	National Harbor		National Harbor, MD		50	%		339		9.5			83.7

	RioCan Canada		Various		50	%		870		132.5			15.7

	Savannah (1)		Savannah, GA		50	%		—		46.5			25.5

	Westgate		Glendale, AZ		58	%		381		14.3			54

	Wisconsin Dells		Wisconsin Dells, WI		50	%		265		2.4			24.3

	Other							—		1.5			—

										$	208		$	268.2


	Charlotte(2)		Charlotte, NC		50	%		398		$	(2.2	)	$	90

										$	(2.2	)	$	90


	-1	Based on capital contribution and distribution provisions in the joint venture agreement, we expect our economic interest in the venture's cash flow to be greater than the ownership percentage indicated above, which in this case, states our legal interest in this venture. Our economic interest may fluctuate based on a number of factors, including mortgage financing, partnership capital contributions and distributions, and proceeds from gains or losses of asset sales.

	-2	The negative carrying value is due to the distributions of proceeds from a mortgage loan, as well as quarterly distributions of excess cash flow, exceeding the original contributions from the partners.




	As of December 31, 2013
	Joint Venture		Outlet Center Location		Ownership %			Square Feet		Carrying Value of Investment (in millions)			Total Joint Venture Debt
								(in 000's)					(in millions)
	Charlotte		Charlotte, NC		50	%		—		$	11.6		$	—

	Galveston/Houston		Texas City, TX		50	%		353		7.4			65

	National Harbor		National Harbor, MD		50	%		336		16.7			52.4

	RioCan Canada		Various		50	%		433		85.7			17.9

	Westgate		Glendale, AZ		58	%		332		16.1			43.1

	Wisconsin Dells		Wisconsin Dells, WI		50	%		265		2.5			24.3

	Other							—		0.2			—

										$	140.2		$	202.7

Schedule of Development, Loan Guarantee, Management, Leasing, and Marketing Fees Paid By Unconsolidated JVs	Fees we received for various services provided to our unconsolidated joint ventures were recognized in management, leasing and other services as follows (in thousands):


			Year Ended December 31,
			2014				2013			2012
	Fees:
	Development and leasing		$	725			$	595		$	193

	Loan guarantee		463				161			80

	Management		1,897				1,831			1,301

	Marketing		506				493			433

	Total Fees		$	3,591			$	3,080		$	2,007

Summary Financial Information of Unconsolidated JVs Balance Sheet	Condensed combined summary financial information of joint ventures accounted for using the equity method as of December 31, 2014 and 2013 is as follows (in thousands):


	Condensed Combined Balance Sheets - Unconsolidated Joint Ventures		2014				2013
	Assets
	Land		$	102,601			$	66,020

	Buildings, improvements and fixtures		542,501				327,972

	Construction in progress, including land		104,780				86,880

			749,882				480,872

	Accumulated depreciation		(48,233		)		(29,523		)
	Total rental property, net		701,649				451,349

	Cash and cash equivalents		46,917				22,704

	Deferred lease costs, net		21,234				19,281

	Deferred debt origination costs, net		5,995				1,737

	Prepaids and other assets		12,766				9,107

	Total assets		$	788,561			$	504,178

	Liabilities and Owners' Equity
	Mortgages payable		$	358,219			$	222,058

	Accounts payable and other liabilities		70,795				8,540

	Total liabilities		429,014				230,598

	Owners' equity		359,547				273,580

	Total liabilities and owners' equity		$	788,561			$	504,178

Summary Financial Information Of Unconsolidated JVs Statements of Operations

	Condensed Combined Statements of Operations- Unconsolidated Joint Ventures:		Year Ended December 31,
			2014				2013			2012
	Revenues (1)		$	78,625			$	85,682		$	54,936

	Expenses:
	Property operating		30,986				31,610			24,678

	General and administrative		621				977			970

	Acquisition costs		—				477			1,437

	Abandoned development costs		472				153			1,447

	Impairment charge		—				—			420

	Depreciation and amortization		23,426				26,912			19,914

	Total expenses		55,505				60,129			48,866

	Operating income		23,120				25,553			6,070

	Gain on early extinguishment of debt (2)		—				13,820			—

	Interest expense		(5,459		)		(11,602		)	(14,760		)
	Net income (loss)		$	17,661			$	27,771		$	(8,690	)

	The Company and Operating Partnership's share of:
	Net income (loss)		$	9,053			$	11,040		$	(3,295	)

	Depreciation and asset impairments (real estate related) (2)		12,212				12,419			8,245


	-1	Note that revenues for the year ended December 31, 2013 include approximately $9.5 million of other income from the settlement of a lawsuit at Deer Park prior to our acquisition of an additional one-third interest in and the consolidation of the property.

	-2	Represents a gain on early extinguishment of debt that was recorded as part of the refinancing of the debt at Deer Park in August 2013 (See Note 3).

Deferred_Charges_Tables

Deferred Charges (Tables)	12 Months Ended
	Dec. 31, 2014
Deferred Costs [Abstract]
Schedule of Deferred Charges	Deferred lease costs and other intangibles, net as of December 31, 2014 and 2013 consist of the following (in thousands):


		2014			2013
	Deferred lease costs	$	61,205		$	60,657

	Intangible assets:
	Above market leases	44,144			49,584

	Lease in place value	69,893			102,085

	Tenant relationships	57,230			62,438

	Other intangibles	42,789			45,534

		275,261			320,298

	Accumulated amortization	(134,378		)	(156,717		)
	Deferred lease costs and other intangibles, net	$	140,883		$	163,581

Schedule of Expected Amortization Expense	Estimated aggregate amortization of net above and below market leases and other intangibles for each of the five succeeding years is as follows (in thousands):


	Year	Above/below market leases, net			Deferred lease costs and other intangibles
	2015	$	2,324		$	11,478

	2016	1,957			9,977

	2017	1,997			8,195

	2018	1,880			7,220

	2019	466			4,922

	Total	$	8,624		$	41,792

Schedule of Deferred Financing Fees	Deferred debt origination costs, net as of December 31, 2014 and 2013 consist of the following (in thousands):


		2014			2013
	Deferred debt origination costs	$	22,126		$	20,112

	Accumulated amortization	(10,000		)	(9,294		)
	Deferred debt origination costs, net	$	12,126		$	10,818

Debt_of_the_Operating_Partners1

Debt of the Operating Partnership (Tables) (Tanger Properties Limited Partnership [Member])	12 Months Ended
	Dec. 31, 2014
Tanger Properties Limited Partnership [Member]
Schedule of Debt	Debt as of December 31, 2014 and 2013 consists of the following (in thousands):


							As of					As of
							December 31, 2014					December 31, 2013
			Stated Interest Rate(s)			Maturity Date	Principal		Premium			Principal		Premium
									(Discount)					(Discount)
	Senior, unsecured notes:

	Senior notes		6.15	%		Nov-15	$	—	$	—		$	250,000	$	(211	)

	Senior notes		6.125	%		Jun-20	300,000		(1,276		)	300,000		(1,469		)

	Senior notes		3.875	%		Dec-23	250,000		(3,732		)	250,000		(4,072		)

	Senior notes		3.75	%		Dec-24	$	250,000	$	(1,418	)	—		—


	Mortgages payable:
	Atlantic City (1)		5.14%-7.65%			November 2021- December 2026	45,997		3,694			48,535		4,091

	Deer Park		LIBOR + 1.50%			Aug-18	150,000		(1,161		)	150,000		(1,478		)

	Hershey (1)		5.17%-8.00%			Aug-15	29,271		399			29,970		993

	Ocean City (1)		5.24	%		Jan-16	17,827		99			18,193		193

	Foxwoods		LIBOR + 1.65%			Dec-17	25,235		—			—		—

	Note payable (1)		1.5	%		Jun-16	10,000		(241		)	10,000		(396		)

	Unsecured term loan		LIBOR + 1.05%			Feb-19	250,000		—			250,000		—

	Unsecured term note		LIBOR + 1.30%			Aug-17	7,500		—			7,500		—

	Unsecured lines of credit		LIBOR + 1.00%			Oct-17	111,000		—			16,200		—

							$	1,446,830	$	(3,636	)	$	1,330,398	$	(2,349	)


	-1	The effective interest rates assigned during the purchase price allocation to these assumed mortgages and note payable during acquisitions in 2011 were as follows: Atlantic City 5.05%, Ocean City 4.68%, Hershey 3.40% and
Schedule of Maturities of Long-term Debt	Maturities of the existing long-term debt as of December 31, 2014 are as follows (in thousands):


	Calendar Year		Amount
	2015		$	32,343

	2016		30,283

	2017		146,743

	2018		153,183

	2019		253,369

	Thereafter		830,909

	Subtotal		1,446,830

	Net discount		(3,636		)
	Total		$	1,443,194

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	The following table summarizes the terms and fair values of our derivative financial instruments, as well as their classifications within the consolidated balance sheets as of December 31, 2014 and December 31, 2013 (in thousands):


											Fair Value
	Effective Date	Maturity Date	Notional Amount			Bank Pay Rate		Company Fixed Pay Rate			2014		2013
	Assets:
	14-Nov-13	14-Aug-18	$	50,000		1 month LIBOR		1.3075	%		$	26	$	455

	14-Nov-13	14-Aug-18	50,000			1 month LIBOR		1.297	%		40		440

	14-Nov-13	14-Aug-18	50,000			1 month LIBOR		1.3025	%		29		487

	Total		$	150,000							$	95	$	1,382

Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss)	The following table represents the effect of the derivative financial instruments on the accompanying consolidated financial statements for the years ended December 31, 2014, 2013 and 2012, respectively (in thousands):


		Location of Reclassification from Accumulated Other Comprehensive Income Into Income	December 31,
			2014			2013			2012
	Interest Rate Swaps (Effective Portion):
	Amount of (gain) loss recognized in other comprehensive income on derivative		$	(1,287	)	$	1,382		$	—


	Treasury Rate Lock (Effective Portion):
	Amount of gain reclassified from accumulated other comprehensive income into income	Interest Expense	$	741		$	371		$	351

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table sets forth our assets and liabilities that are measured at fair value within the fair value hierarchy (in thousands):


				Level 1		Level 2		Level 3
				Quoted Prices in Active Markets for Identical Assets or Liabilities		Significant Observable Inputs		Significant Unobservable Inputs
		Total
	Fair value as of December 31, 2014:
	Assets:
	Interest rate swaps (prepaids and other assets)	$	95	$	—	$	95	$	—

	Total assets	$	95	$	—	$	95	$	—






				Level 1		Level 2		Level 3
				Quoted Prices in Active Markets for Identical Assets or Liabilities		Significant Observable Inputs		Significant Unobservable Inputs
		Total
	Fair value as of December 31, 2013:
	Assets:
	Interest rate swaps (prepaids and other assets)	$	1,382	$	—	$	1,382	$	—

	Total assets	$	1,382	$	—	$	1,382	$	—

Partners_Equity_of_the_Operati1

Partners' Equity of the Operating Partnership (Tables) (Tanger Properties Limited Partnership [Member])	12 Months Ended
	Dec. 31, 2014
Tanger Properties Limited Partnership [Member]
Schedule of Partners' Equity of the Operating Partnership [Line Items]
Schedule of Partners' Equity of the Operating Partnership	The following table sets forth the changes in outstanding partnership units for the years ended December 31, 2014, 2013 and 2012:


			Limited Partnership Units
		General partnership units	Class A		Class B		Total
	Balance December 31, 2011	1,000,000	11,491,892		85,727,656		97,219,548

	Exchange of Class A limited partnership units	—	(6,730,028	)	6,730,028		—

	Issuance of restricted units	—	—		566,000		566,000

	Units issued upon exercise of options	—	—		37,700		37,700

	Balance December 31, 2012	1,000,000	4,761,864		93,061,384		97,823,248

	Exchange of Class A limited partnership units	—	(67,428	)	67,428		—

	Issuance of restricted units	—	—		332,373		332,373

	Units issued upon exercise of options	—	—		44,500		44,500

	Units issued as consideration for business acquisition (see Note 3)	—	450,576		—		450,576

	Balance December 31, 2013	1,000,000	5,145,012		93,505,685		98,650,697

	Units withheld for employee income taxes	—	—		(412,239	)	(412,239	)

	Exchange of Class A limited partnership units	—	(66,606	)	66,606		—

	Issuance of restricted units	—	—		1,302,729		1,302,729

	Units issued upon exercise of options	—	—		47,000		47,000

	Balance December 31, 2014	1,000,000	5,078,406		94,509,781		99,588,187

Noncontrolling_Interests_Table

Noncontrolling Interests (Tables)	12 Months Ended
	Dec. 31, 2014
Noncontrolling Interest [Abstract]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net	The changes in the Company's ownership interests in the subsidiaries impacted consolidated equity during the periods shown as follows:


			2014		2013
	Net income attributable to Tanger Factory Outlet Centers, Inc.		$	74,011	$	107,557

	Increase in Tanger Factory Outlet Centers, Inc. paid-in-capital adjustments to noncontrolling interests (1)		741		11,130

	Changes from net income attributable to Tanger Factory Outlet Centers, Inc. and transfers from noncontrolling interest		$	74,752	$	118,687


	-1	In 2014 and 2013, adjustments of the noncontrolling interest were made as a result of increases in the Company's ownership of the Operating Partnership from additional units received in connection with the Company's issuance of common shares upon exercise of options, share-based compensation and the issuance of common shares upon exchange of Class A common limited partnership units.

Earnings_Per_Share_of_the_Comp1

Earnings Per Share of the Company (Tables) (Tanger Factory Outlet Centers, Inc [Member])	12 Months Ended
	Dec. 31, 2014
Tanger Factory Outlet Centers, Inc [Member]
Schedule of Earnings Per Share, Basic and Diluted	The following table sets forth a reconciliation of the numerators and denominators in computing earnings per share for the years ended December 31, 2014, 2013 and 2012 (in thousands, except per share amounts):


		2014			2013			2012
	NUMERATOR
	Net income attributable to Tanger Factory Outlet Centers, Inc.	$	74,011		$	107,557		$	53,228

	Less allocation of earnings to participating securities	(1,872		)	(1,126		)	(784		)
	Net income available to common shareholders of Tanger Factory Outlet Centers, Inc.	$	72,139		$	106,431		$	52,444

	DENOMINATOR
	Basic weighted average common shares	93,769			93,311			91,733

	Effect of notional units	—			849			846

	Effect of outstanding options and certain restricted common shares	70			87			82

	Diluted weighted average common shares	93,839			94,247			92,661


	Basic earnings per common share:
	Net income	$	0.77		$	1.14		$	0.57


	Diluted earnings per common share:
	Net income	$	0.77		$	1.13		$	0.57

Earnings_Per_Unit_of_the_Opera1

Earnings Per Unit of the Operating Partnership (Tables) (Tanger Properties Limited Partnership [Member])	12 Months Ended
	Dec. 31, 2014
Tanger Properties Limited Partnership [Member]
Schedule of Earnings Per Share, Basic and Diluted	The following table sets forth a reconciliation of the numerators and denominators in computing earnings per unit for the years ended December 31, 2014, 2013 and 2012 (in thousands, except per unit amounts). Note that all per unit amounts reflect a four-for-one split of the Operating Partnership's units in August 2013:


		2014			2013			2012
	Numerator
	Net income attributable to partners of the Operating Partnership	$	78,048		$	113,200		$	56,495

	Allocation of earnings to participating securities	(1,873		)	(1,129		)	(784		)
	Net income available to common unitholders of the Operating Partnership	$	76,175		$	112,071		$	55,711

	Denominator
	Basic weighted average common units	98,883			98,193			97,677

	Effect of notional units	—			849			846

	Effect of outstanding options and certain restricted common units	70			87			82

	Diluted weighted average common units	98,953			99,129			98,605


	Basic earnings per common unit:
	Net income	$	0.77		$	1.14		$	0.57


	Diluted earnings per common unit:
	Net income	$	0.77		$	1.13		$	0.57

EquityBased_Compensation_Table

Equity-Based Compensation (Tables) (Tanger Factory Outlet Centers, Inc [Member])	12 Months Ended
	Dec. 31, 2014
Tanger Factory Outlet Centers, Inc [Member]
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs	We recorded share based compensation expense in general and administrative expenses in the consolidated statements of operations for the years ended December 31, 2014, 2013 and 2012, respectively, as follows (in thousands):


			2014				2013				2012(1)
	Restricted common shares		$	9,978			$	8,354			$	8,497

	Notional unit performance awards		4,313				2,847				1,970

	Options		459				175				209

	Total share based compensation		$	14,750			$	11,376			$	10,676


	-1	For the year ended December 31, 2012, includes approximately $1.3 million of compensation expense related to 45,000 common shares that vested immediately upon grant related to the Employment Agreement described above.
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range	Options outstanding at December 31, 2014 had the following weighted average exercise prices and weighted average remaining contractual lives:


					Options Outstanding									Options Exercisable
	Exercise prices				Options			Weighted average exercise price				Weighted remaining contractual life in years		Options	Weighted average exercise price
	$	26.06			113,000			$	26.06			6.09		52,600	$	26.06

	32.02				257,500			32.02				9.01		—	—

					370,500			$	30.2			8.12		52,600	$	26.06

Schedule of Share-based Compensation, Stock Options, Activity	A summary of option activity under our Amended and Restated Incentive Award Plan as of December 31, 2014 and changes during the year then ended is presented below (aggregate intrinsic value amount in thousands):


	Options		Shares			Weighted-average exercise price				Weighted-average remaining contractual life in years		Aggregate intrinsic value
	Outstanding as of December 31, 2013		166,300			$	24.13

	Granted		282,500			32.02

	Exercised		(47,000	)		19.22

	Forfeited		(31,300	)		31.11

	Outstanding as of December 31, 2014		370,500			$	30.2			8.12		$	2,759


	Vested and Expected to Vest as of
	31-Dec-14		291,661			$	30.07			8.05		$	2,212


	Exercisable as of December 31, 2014		52,600			$	26.06			6.02		$	610

Schedule of Share-based Compensation, Restricted Stock Units Award Activity	The following table summarizes information related to unvested restricted common shares outstanding as of December 31, 2014:


	Unvested Restricted Common Shares		Number of shares			Weighted average grant date fair value
	Outstanding at December 31, 2013		1,057,966			$	26.91

	Granted		1,307,729			26.5

	Vested		(1,266,245	)		24.67

	Forfeited		—			—

	Outstanding at December 31, 2014		1,099,450			$	29.01

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income of the Company (Tables) (Tanger Factory Outlet Centers, Inc [Member])	12 Months Ended
	Dec. 31, 2014
Tanger Factory Outlet Centers, Inc [Member]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents changes in the balances of each component of accumulated comprehensive income for the year ended December 31, 2014, 2013, and 2012 (in thousands):


		Tanger Factory Outlet Centers, Inc. Accumulated Other Comprehensive Income									Noncontrolling Interest in Operating Partnership Accumulated Other Comprehensive Income
		Foreign Currency			Cash flow hedges			Total			Foreign Currency			Cash flow hedges			Total
	Balance December 31, 2011	$	—		$	1,535		$	1,535		$	—		$	(72	)	$	(72	)

	Amortization of cash flow hedges	—			(330		)	(330		)	—			(21		)	(21		)

	Unrealized loss on foreign currency translation adjustments	(5		)	—			(5		)	—			—			—

	Balance December 31, 2012	(5		)	1,205			1,200			—			(93		)	(93		)

	Amortization of cash flow hedges	—			(353		)	(353		)	—			(18		)	(18		)

	Unrealized loss on foreign currency translation adjustments	(4,708		)	—			(4,708		)	(260		)	—			(260		)

	Change in fair value of cash flow hedges	—			1,310			1,310			—			—			—

	Realized loss on foreign currency	123			—			123			6			72			78

	Balance December 31, 2013	(4,590		)	2,162			(2,428		)	(254		)	(39		)	(293		)

	Amortization of cash flow hedges	—			(852		)	(852		)	—			111			111

	Unrealized loss on foreign currency translation adjustments	(9,523		)	—			(9,523		)	(519		)	—			(519		)

	Change in fair value of cash flow hedges	—			(1,220		)	(1,220		)	—			(67		)	(67		)

	Balance December 31, 2014	$	(14,113	)	$	90		$	(14,023	)	$	(773	)	$	5		$	(768	)

Reclassification out of Accumulated Other Comprehensive Income	The following represents amounts reclassified out of accumulated other comprehensive income into earnings during the years ended December 31, 2014, 2013, and 2012, respectively:


	Details about Accumulated Other Comprehensive Income Components	Amount Reclassified from Accumulated Other Comprehensive Income									Affected Line Item in Statement of Operations
		2014			2013			2012
	Amortization of cash flow hedges	$	(852	)	$	(353	)	$	(330	)	Interest expense
	Realized loss on foreign currency	—			123			—			Interest expense

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Income of the Operating Partnership (Tables) (Tanger Properties Limited Partnership [Member])	12 Months Ended
	Dec. 31, 2014
Tanger Properties Limited Partnership [Member]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents changes in the balances of each component of accumulated comprehensive income for the year ended December 31, 2014, 2013, and 2012 (in thousands):


		Foreign Currency			Cash flow hedges			Accumulated Other Comprehensive Income (Loss)
	Balance December 31, 2011	$	—		$	1,463		$	1,463

	Amortization of cash flow hedges	—			(351		)	(351		)

	Unrealized loss on foreign currency translation adjustments	(5		)	—			(5		)

	Balance December 31, 2012	(5		)	1,112			1,107

	Amortization of cash flow hedges	—			(371		)	(371		)

	Unrealized loss on foreign currency translation adjustments	(4,968		)	—			(4,968		)

	Change in fair value of cash flow hedges	—			1,382			1,382

	Realized loss on foreign currency	129			—			129

	Balance December 31, 2013	(4,844		)	2,123			(2,721		)

	Amortization of cash flow hedges	—			(741		)	(741		)

	Unrealized loss on foreign currency translation adjustments	(10,042		)	—			(10,042		)

	Change in fair value of cash flow hedges	—			(1,287		)	(1,287		)

	Balance December 31, 2014	$	(14,886	)	$	95		$	(14,791	)


Reclassification out of Accumulated Other Comprehensive Income	The following represents amounts reclassified out of accumulated other comprehensive income into earnings during the years ended December 31, 2014, 2013, and 2012 (in thousands):


	Details about Accumulated Other Comprehensive Income Components	Amount Reclassified from Accumulated Other Comprehensive Income									Affected Line Item in Statement of Operations
		2014			2013			2012
	Amortization of cash flow hedges	$	(741	)	$	(371	)	$	(351	)	Interest expense
	Realized loss on foreign currency	—			129			—			Interest expense

Supplementary_Income_Statement1

Supplementary Income Statement Information (Tables)	12 Months Ended
	Dec. 31, 2014
Supplementary Income Statement Information [Abstract]
Schedule of Supplementary Income Statement Information	The following amounts are included in property operating expenses in income from continuing operations for the years ended December 31, 2014, 2013 and 2012 (in thousands):


		2014		2013		2012
	Advertising and promotion	$	25,431	$	24,035	$	23,051

	Common area maintenance	65,980		57,693		53,179

	Real estate taxes	25,644		21,976		19,842

	Other operating expenses	20,367		17,342		15,088

		$	137,422	$	121,046	$	111,160

Lease_Agreements_Tables

Lease Agreements (Tables)	12 Months Ended
	Dec. 31, 2014
Leases [Abstract]
Schedule of Future Minimum Rental Payments Receivable for Operating Leases	Future minimum lease receipts under non-cancellable operating leases as of December 31, 2014, excluding the effect of straight-line rent and percentage rentals, are as follows (in thousands):



	2015	$	243,870

	2016	219,461

	2017	190,130

	2018	156,436

	2019	119,864

	Thereafter	359,049

		$	1,288,810

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases	Minimum lease payments for the next five years and thereafter are as follows (in thousands):


	2015	$	5,807

	2016	5,871

	2017	5,590

	2018	5,567

	2019	5,734

	Thereafter	301,040

		$	329,609

Quarterly_Financial_Data_of_th1

Quarterly Financial Data of the Company (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information	The following table sets forth the Company's summarized quarterly financial information for the years ended December 31, 2014 and 2013 (unaudited and in thousands, except per common share data)(1). This information is not required for the Operating Partnership. Amounts presented for "total revenues" and "operating income" for all quarters presented, except the fourth quarter of 2014 which had not been previously disclosed, have been modified from original amounts disclosed in our Form 10-Qs due to reclassifications of certain amounts related to interest income and other income (expense) in the consolidated statement of operations from the caption "other income" to the caption "interest and other income" which is not included in total revenues or operating income:


			Year Ended December 31, 2014
			First Quarter		Second Quarter		Third Quarter		Fourth
									Quarter(2)
	Total revenues		$	102,783	$	102,212	$	105,189	$	108,374

	Operating income		28,368		32,625		35,283		35,587

	Net income		15,440		19,895		24,297		18,520

	Income attributable to Tanger Factory Outlet Centers, Inc.		14,616		18,850		23,003		17,542

	Income available to common shareholders of Tanger Factory Outlet Centers, Inc.		14,187		18,369		22,522		17,061


	Basic earnings per share available to common shareholders:
	Net income		$	0.15	$	0.2	$	0.24	$	0.18



	Diluted earnings per share available to common shareholders:
	Net income		$	0.15	$	0.2	$	0.24	$	0.18


	-1	Quarterly amounts may not add to annual amounts due to the effect of rounding on a quarterly basis.

	-2	For the fourth quarter, net income includes a $7.5 million gain on the sale of our Lincoln City outlet center and a $13.1 million loss on early extinguishment of debt related to the early redemption of senior notes due November 2015.



			Year Ended December 31, 2013
			First Quarter		Second Quarter		Third Quarter (2)		Fourth Quarter
	Total revenues		$	88,688	$	91,002	$	97,804	$	107,325

	Operating income		28,515		29,843		33,431		35,916

	Net income		16,229		17,776		56,180		23,136

	Income attributable to Tanger Factory Outlet Centers, Inc.		15,439		16,888		53,294		21,936

	Income available to common shareholders of Tanger Factory Outlet Centers, Inc.		15,245		16,657		52,685		21,706


	Basic earnings per share available to common shareholders:
	Net income		$	0.16	$	0.18	$	0.56	$	0.23


	Diluted earnings per share available to common shareholders:
	Net income		$	0.16	$	0.18	$	0.56	$	0.23


	-1	Quarterly amounts may not add to annual amounts due to the effect of rounding on a quarterly basis.

	-2	For the third quarter, net income includes a $26.0 million gain on our previously held interest in Deer Park upon the acquisition of an additional one-third interest in August 2013, and the consolidation of Deer Park into our financial statements.

Organization_of_the_Company_De

Organization of the Company (Details)	Dec. 31, 2014	Dec. 31, 2013
Entity Information [Line Items]
Number of operating partnership units owned by wholly-owned subsidiaries	95,509,781
Consolidated Properties [Member]
Entity Information [Line Items]
Number of Outlet Centers	36
Total gross leaseable area	11,300,000
Outlet center occupancy percentage	98.00%
Number of stores	2,400
Number of store brands	380
Unconsolidated Properties [Member]
Entity Information [Line Items]
Number of Outlet Centers	9
Total gross leaseable area	2,600,000
CANADA \| Unconsolidated Properties [Member]
Entity Information [Line Items]
Number of Outlet Centers	4
Tanger Properties Limited Partnership [Member] \| Class A Limited Partnership Units [Member]
Entity Information [Line Items]
Number of operating partnership units owned by family limited partners	5,078,406	5,145,012

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Principles of Consolidation (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013
In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Equity method investments	$208		$140.20
Westgate [Member]
Equity method investments	14.3		16.1
Savannah [Member]
Equity method investments	$46.50	[1]

[1]	Based on capital contribution and distribution provisions in the joint venture agreement, we expect our economic interest in the venture's cash flow to be greater than the ownership percentage indicated above, which in this case, states our legal interest in this venture. Our economic interest may fluctuate based on a number of factors, including mortgage financing, partnership capital contributions and distributions, and proceeds from gains or losses of asset sales.

Summary_of_Significant_Account4

Summary of Significant Accounting Policies - Rental Property (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]
Internal development costs, capitalized	$1.60	$2.20	$1.80
Interest costs incurred, capitalized	5.1	1.6	1.2
Buildings and improvements, estimated useful life	33 years
Land improvements, estimated useful life	15 years
Property, plant and equipment, estimated useful life, minimum	7 years
Real estate depreciation	$80.10	$74.70	$73.70
Purchase price allocated to assets, useful life, maximum	33 years

Summary_of_Significant_Account5

Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Money market funds, at carrying value	$671	$670

Summary_of_Significant_Account6

Summary of Significant Accounting Policies - Deferred Charges (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]
Deferred Lease Costs Capitalized	$6.20	$4	$5.10
Deferred lease costs amount related to salaries and related costs	$5.10	$2.90	$4.50

Summary_of_Significant_Account7

Summary of Significant Accounting Policies - Impairment of Long-Lived Assets (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]
Impairment charges	$0	$0	$0
Unrecorded impairment losses	$0	$0	$0

Summary_of_Significant_Account8

Summary of Significant Accounting Policies - Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Common Dividends Per Share [Line Items]
REIT annual taxable income distribution requirement percentage	90.00%
Tanger Factory Outlet Centers, Inc [Member]
Schedule of Common Dividends Per Share [Line Items]
Common dividends per share (in dollars per share)	$0.95	$0.89	$0.83
Tanger Factory Outlet Centers, Inc [Member] \| Ordinary Income [Member]
Schedule of Common Dividends Per Share [Line Items]
Common dividends per share (in dollars per share)	$0.76	$0.79	$0.83
Tanger Factory Outlet Centers, Inc [Member] \| Capital Gain [Member]
Schedule of Common Dividends Per Share [Line Items]
Common dividends per share (in dollars per share)	$0	$0.01	$0
Tanger Factory Outlet Centers, Inc [Member] \| Return Of Captial [Member]
Schedule of Common Dividends Per Share [Line Items]
Common dividends per share (in dollars per share)	$0.18	$0.08	$0.00

Summary_of_Significant_Account9

Summary of Significant Accounting Policies - Income Taxes - Schedule of Taxable Income Available to Common Shareholders (Details) (Tanger Factory Outlet Centers, Inc [Member], USD $)	3 Months Ended																12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Tanger Factory Outlet Centers, Inc [Member]
Schedule of Taxable Income Available to Common Shareholders [Line Items]
Net income available to the Company's shareholders	$17,542	[1],[2]	$23,003	[1]	$18,850	[1]	$14,616	[1]	$21,936	[1]	$53,294	[1],[3]	$16,888	[1]	$15,439	[1]	$74,011	$107,557	$53,228
Depreciation and amortization																	20,575	-10,697	16,034
Loss on sale or disposal of real estate																	-9,524	-1,805	-1,543
Equity in earnings from unconsolidated joint ventures																	12,910	5,601	5,037
Share-based payment compensation																	-37,193	-3,818	-6,298
Gain on previously held interest in acquired joint venture																	0	-24,710	0
Other differences																	1,205	-5,823	-850
Taxable income available to common shareholders																	$61,984	$66,305	$65,608

[1]	Quarterly amounts may not add to annual amounts due to the effect of rounding on a quarterly basis.
[2]	For the fourth quarter, net income includes a $7.5 million gain on the sale of our Lincoln City outlet center and a $13.1 million loss on early extinguishment of debt related to the early redemption of senior notes due November 2015.
[3]	For the third quarter, net income includes a $26.0 million gain on our previously held interest in Deer Park upon the acquisition of an additional one-third interest in August 2013, and the consolidation of Deer Park into our financial statements.

Recovered_Sheet1

Summary of Significant Accounting Policies - Revenue Recognition (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Straight-line rent adjustments	$34.60	$30.90

Recovered_Sheet2

Summary of Significant Accounting Policies - Concentration of Credit Risk (Details) (Consolidated Gross Revenues [Member])	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Consolidated Gross Revenues [Member]
Concentration risk, customer	0	0	0
Concentration risk, percentage	10.00%	10.00%	10.00%

Recovered_Sheet3

Summary of Significant Accounting Policies - Supplemental Cash Flow Information (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2011
	sqft	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2011
Expenditures included in construction trade payables	$23	$9.80	$7.10
Square Feet	982,000
Interest paid, net	55.4	48	46.8
Deer Park [Member]
Noncash or part noncash acquisition, debt assumed		237.9
Noncash or part noncash acquisition, increase in assets related to step acquisition		27.9
Noncash or part noncash acquisition, increase in assets related to the fair market valuation of previously held interest		26
Hershey [Member]
Square Feet	248,000
Loan included in other assets				$6.20
Class A Limited Partnership Units [Member] \| Tanger Properties Limited Partnership [Member] \| Deer Park [Member]
Noncash or part noncash acquisition, noncash financial or equity instrument consideration, shares issued		14

Recovered_Sheet4

Summary of Significant Accounting Policies - Narrative (Details) (USD $)	1 Months Ended	12 Months Ended
	Aug. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity method investments		$208,000,000	$140,200,000
Number of properties held for sale		4
Management, leasing and other services		3,591,000	3,080,000	2,007,000
Tanger Properties Limited Partnership [Member]
Stock split, conversion ratio	4
Exchange ratio of partnership units for common shares	1
Partnership unit exchange ratio	4
Management, leasing and other services		$3,591,000	$3,080,000	$2,007,000
Potential Sale in first quarter of 2015 [Member]
Number of properties held for sale		3
Potential Sale in first quarter of fiscal 2016 [Member]
Number of properties held for sale		1

Acquisition_of_Rental_Property2

Acquisition of Rental Property - Schedule of Consideration Transferred (Details) (Deer Park [Member], USD $)	1 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2013
Deer Park [Member]
Schedule of Consideration Transferred [Line Items]
Cash transferred	$13,939
Common limited partnership units issued	13,981
Fair value of total consideration transferred to acquire one-third interest	27,920
Fair value of our previously held one-third interest	27,920
Fair value of noncontrolling interest	27,920
Fair value of net assets acquired	$83,760

Acquisition_of_Rental_Property3

Acquisition of Rental Property - Schedule of Assets and Liabilities (Details) (Deer Park [Member], USD $)	1 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2013
Business Acquisition [Line Items]
Land	$82,413
Buildings, improvements and fixtures	172,694
Deferred lease costs and other intangibles	64,313
Other identifiable assets acquired and liabilities assumed, net	2,265
Debt	-237,925
Total fair value of net assets acquired	83,760
Above market lease value [Member]
Business Acquisition [Line Items]
Deferred lease costs and other intangibles	18,807
Weighted-Average Amortization Period (in years)	11 years 10 months 24 days
Below market lease value [Member]
Business Acquisition [Line Items]
Deferred lease costs and other intangibles	-12,658
Weighted-Average Amortization Period (in years)	18 years 6 months
Lease in place value [Member]
Business Acquisition [Line Items]
Deferred lease costs and other intangibles	28,846
Weighted-Average Amortization Period (in years)	7 years 7 months 18 days
Tenant Relationships [Member]
Business Acquisition [Line Items]
Deferred lease costs and other intangibles	27,594
Weighted-Average Amortization Period (in years)	19 years 0 months 11 days
Lease and Legal Costs [Member]
Business Acquisition [Line Items]
Deferred lease costs and other intangibles	$1,724
Weighted-Average Amortization Period (in years)	8 years 10 months 24 days

Acquisition_of_Rental_Property4

Acquisition of Rental Property - Pro Forma Information (Details) (Deer Park [Member], USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deer Park [Member]
Business Acquisiton, Pro Forma Information [Line Items]
Total Revenue	$408,333	$381,388
Income from continuing operations	85,836	78,347
Net income attributable to Tanger Factory Outlet Centers, Inc.	$80,621	$73,219
Basic earnings per common share	$0.86	$0.80
Diluted earnings per common share	$0.86	$0.79

Acquisition_of_Rental_Property5

Acquisition of Rental Property - Narrative (Details) (USD $)	1 Months Ended	4 Months Ended	12 Months Ended
	Aug. 31, 2013	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2011
Acquistion of Rental Property [Line Items]
Square Feet			982,000
Deer Park [Member]
Acquistion of Rental Property [Line Items]
Consideration transferred to equity partner	$27,900,000
Payments to acquire equity method investments	13,900,000
Contingent consideration associated with acquisition	0
Acquisition costs	1,000,000
Gain on previously held interest in acquired joint venture	26,000,000
Fixed annual lease payments to property owners	2,500,000
Pre-acquisition value of redeemable noncontrolling interest	28,400,000
Pro forma information, revenue of acquiree since acquisition date, actual		11,100,000
Pro forma information, earnings or (loss) of acquiree since acquisition date, actual		-3,500,000
Deer Park [Member]
Acquistion of Rental Property [Line Items]
Principal	150,000,000
Basis spread on variable rate, basis points	150.00%
Amount borrowed under existing lines of credit to fund acquisition	89,500,000
Basis spread on variable rate	3.25%
Gain on early extinguishment of debt (2)	13,800,000
Gain (loss) on extinguishment of debt and litigation settlement	7,800,000
Additional Ownership Percentage Acquired	33.30%
Ownership %	66.70%
Hershey [Member]
Acquistion of Rental Property [Line Items]
Square Feet			248,000
Loan included in other assets						6,200,000
Mezzanine and Senior Loans Combined [Member] \| Deer Park [Member]
Acquistion of Rental Property [Line Items]
Secured debt	238,500,000
Tanger Properties Limited Partnership [Member]
Acquistion of Rental Property [Line Items]
Principal		1,330,398,000	1,446,830,000	1,330,398,000
Gain on early extinguishment of debt (2)			-13,140,000	0	0
Acquisition costs			7,000	1,203,000	117,000
Gain on previously held interest in acquired joint venture			$0	$26,002,000	$0
Class A Limited Partnership Units [Member] \| Tanger Properties Limited Partnership [Member] \| Deer Park [Member]
Acquistion of Rental Property [Line Items]
Consideration paid number of shares	450,576

Disposition_of_Properties_and_2

Disposition of Properties and Properties Held for Sale (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
	sqft
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet	982,000
Net Sales Price	$38,993
Gain on sale of real estate	7,513
Lincoln City [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet	270,000
Net Sales Price	38,993
Gain on sale of real estate	7,513
Various [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet	712,000
Net Sales Price	0
Gain on sale of real estate	$0

Disposition_of_Properties_and_3

Disposition of Properties and Properties Held for Sale - Components of Assets Held for Sale (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified	Dec. 31, 2014
Long Lived Assets Held-for-sale [Line Items]
Rental property held for sale	$46,005
Rental property, net
Long Lived Assets Held-for-sale [Line Items]
Rental property held for sale	43,532
Deferred lease costs and other intangibles, net
Long Lived Assets Held-for-sale [Line Items]
Rental property held for sale	757
Prepaids and other assets
Long Lived Assets Held-for-sale [Line Items]
Rental property held for sale	$1,716

Disposition_of_Properties_and_4

Disposition of Properties and Properties Held for Sale - Narrative (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified	OutletCenter
Number of properties held for sale	4
Rental property held for sale	$46,005
Potential Sale in first quarter of 2015 [Member]
Number of properties held for sale	3
Potential Sale in first quarter of fiscal 2016 [Member]
Number of properties held for sale	1

Development_of_Consolidated_Re1

Development of Consolidated Rental Properties (Details) (USD $)	16 Months Ended	1 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended		1 Months Ended
	Dec. 31, 2014	Jul. 31, 2014	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
	Hotel		mi				Extension
	sqft		sqft
Development of Consolidated Rental Properties [Line Items]
Area of real estate property	982,000		982,000				982,000
Foxwoods [Member]
Development of Consolidated Rental Properties [Line Items]
Area of real estate property	313,000		313,000				313,000
Number of Hotels	2		2				2
Partner's Portion of Contributed Capital to the Joint Venture	$1,000,000
Contributions for construction in process	45,800,000
Grand Rapids [Member]
Development of Consolidated Rental Properties [Line Items]
Area of real estate property	350,000		350,000				350,000
Contributions for construction in process			19,700,000
Payments to Acquire Land		8,000,000
Number of miles from major city	11		11				11
Number of miles from vacation destination	30		30				30
West Branch [Member]
Development of Consolidated Rental Properties [Line Items]
Net book value of damaged assets written off				455,000
Demolition costs				567,000
Total insurance proceeds received or expected to be received			1,300,000
Casualty gain			486,000
Tanger Properties Limited Partnership [Member]
Development of Consolidated Rental Properties [Line Items]
Principal	1,446,830,000		1,446,830,000		1,330,398,000		1,446,830,000
Casualty gain			486,000		0	0
Tanger Properties Limited Partnership [Member] \| Foxwoods [Member]
Development of Consolidated Rental Properties [Line Items]
Ownership %	67.00%		67.00%				67.00%
Tanger Properties Limited Partnership [Member] \| Mortgages [Member] \| Foxwoods [Member]
Development of Consolidated Rental Properties [Line Items]
Maximum Borrowing Capacity	70,300,000		70,300,000				70,300,000
Basis spread on variable rate							1.65%
Number of mortgage extensions							2
Term of mortgage extension							1 year
Principal	$25,200,000		$25,200,000		$0		$25,200,000

Investments_in_Unconsolidated_2

Investments in Unconsolidated Real Estate Joint Ventures - Unconsolidated Real Estate Joint Ventures (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013
In Millions, unless otherwise specified	sqft		Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]
Square Feet	982,000
Carrying Value of Investment	$208		$140.20
Carrying Value of Investment	-2.2
Total Joint Venture Debt	268.2		202.7
Partnership Interest [Member]
Schedule of Equity Method Investments [Line Items]
Carrying Value of Investment	208		140.2
Charlotte [Member]
Schedule of Equity Method Investments [Line Items]
Ownership %	50.00%	[1]	50.00%
Square Feet	398,000	[1]	0
Carrying Value of Investment			11.6
Carrying Value of Investment	-2.2	[1]
Total Joint Venture Debt	90	[1]	0
Galveston/Houston [Member]
Schedule of Equity Method Investments [Line Items]
Ownership %	50.00%		50.00%
Square Feet	353,000		353,000
Carrying Value of Investment	1.3		7.4
Total Joint Venture Debt	65		65
National Harbor [Member]
Schedule of Equity Method Investments [Line Items]
Ownership %	50.00%		50.00%
Square Feet	339,000		336,000
Carrying Value of Investment	9.5		16.7
Total Joint Venture Debt	83.7		52.4
RioCan Canda [Member]
Schedule of Equity Method Investments [Line Items]
Ownership %	50.00%		50.00%
Square Feet	870,000		433,000
Carrying Value of Investment	132.5		85.7
Total Joint Venture Debt	15.7		17.9
Savannah [Member]
Schedule of Equity Method Investments [Line Items]
Ownership %	50.00%	[2]
Square Feet	0	[2]
Carrying Value of Investment	46.5	[2]
Westgate [Member]
Schedule of Equity Method Investments [Line Items]
Ownership %	58.00%		58.00%
Square Feet	381,000		332,000
Carrying Value of Investment	14.3		16.1
Total Joint Venture Debt	54		43.1
Wisconsin Dells [Member]
Schedule of Equity Method Investments [Line Items]
Ownership %	50.00%		50.00%
Square Feet	265,000		265,000
Carrying Value of Investment	2.4		2.5
Total Joint Venture Debt			24.3
Other [Member]
Schedule of Equity Method Investments [Line Items]
Square Feet	0		0
Carrying Value of Investment	1.5		0.2
Total Joint Venture Debt	$0		$0

[1]	The negative carrying value is due to the distributions of proceeds from a mortgage loan, as well as quarterly distributions of excess cash flow, exceeding the original contributions from the partners.
[2]	Based on capital contribution and distribution provisions in the joint venture agreement, we expect our economic interest in the venture's cash flow to be greater than the ownership percentage indicated above, which in this case, states our legal interest in this venture. Our economic interest may fluctuate based on a number of factors, including mortgage financing, partnership capital contributions and distributions, and proceeds from gains or losses of asset sales.

Investments_in_Unconsolidated_3

Investments in Unconsolidated Real Estate Joint Ventures - Management, Leasing and Marketing Fees (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Equity Method Investments [Line Items]
Management, leasing and other services	$3,591	$3,080	$2,007
Development and Leasing Fee [Member]
Schedule of Equity Method Investments [Line Items]
Management, leasing and other services	725	595	193
Loan Guarantee Fee [Member]
Schedule of Equity Method Investments [Line Items]
Management, leasing and other services	463	161	80
Management and Leasing Fee [Member]
Schedule of Equity Method Investments [Line Items]
Management, leasing and other services	1,897	1,831	1,301
Marketing Fee [Member]
Schedule of Equity Method Investments [Line Items]
Management, leasing and other services	$506	$493	$433

Investments_in_Unconsolidated_4

Investments in Unconsolidated Real Estate Joint Ventures - Summary Balance Sheets for Unconsolidated Joint Ventures (Details) (Partnership Interest [Member], USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Partnership Interest [Member]
Summary Balance Sheets of Unconsolidated Joint Ventures [Line Items]
Land	$102,601	$66,020
Buildings, improvements and fixtures	542,501	327,972
Construction in progress, including land	104,780	86,880
Real Estate Investment Property, at Cost, Total	749,882	480,872
Accumulated depreciation	-48,233	-29,523
Total rental property, net	701,649	451,349
Cash and cash equivalents	46,917	22,704
Deferred lease costs, net	21,234	19,281
Deferred debt origination costs, net	5,995	1,737
Prepaids and other assets	12,766	9,107
Total assets	788,561	504,178
Mortgages payable	358,219	222,058
Accounts payable and other liabilities	70,795	8,540
Total liabilities	429,014	230,598
Owners' equity	359,547	273,580
Total liabilities and owners' equity	$788,561	$504,178

Investments_in_Unconsolidated_5

Investments in Unconsolidated Real Estate Joint Ventures - Summary Statements of Operations for Unconsolidated Joint Ventures (Details) (USD $)	12 Months Ended						1 Months Ended	3 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012		Aug. 31, 2013	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013
Partnership Interest [Member]
Summary Statements of Operations of Unconsolidated Joint Ventures [Line Items]
Revenues	$78,625,000		$85,682,000	[1]	$54,936,000
Property operating	30,986,000		31,610,000		24,678,000
General and administrative	621,000		977,000		970,000
Acquisition costs	0		477,000		1,437,000
Abandoned development costs	472,000		153,000		1,447,000
Impairment charge	0		0		420,000
Depreciation and amortization	23,426,000		26,912,000		19,914,000
Total expenses	55,505,000		60,129,000		48,866,000
Operating income	23,120,000		25,553,000		6,070,000
Gain on early extinguishment of debt (2)	0		13,820,000	[2]	0
Interest expense	-5,459,000		-11,602,000		-14,760,000
Net income (loss)	17,661,000		27,771,000		-8,690,000
Deer Park [Member]
Summary Statements of Operations of Unconsolidated Joint Ventures [Line Items]
Gain on early extinguishment of debt (2)							13,800,000
Other income, settlement of lawsuit			9,500,000
Ownership %							66.70%
Tanger Factory Outlet Centers, Inc [Member]
Summary Statements of Operations of Unconsolidated Joint Ventures [Line Items]
Revenues	418,558,000		384,819,000		357,002,000			108,374,000	[3],[4]	105,189,000	[3]	102,212,000	[3]	102,783,000	[3]	107,325,000	[3]	97,804,000	[3],[5]	91,002,000	[3]	88,688,000	[3]
Property operating	137,422,000		121,046,000		111,160,000
General and administrative	44,469,000		39,119,000		37,452,000
Acquisition costs	7,000		1,203,000		117,000
Abandoned development costs	2,365,000		0		0
Depreciation and amortization	102,432,000		95,746,000		98,683,000
Total expenses	286,695,000		257,114,000		247,412,000
Operating income	131,863,000		127,705,000		109,590,000			35,587,000	[3],[4]	35,283,000	[3]	32,625,000	[3]	28,368,000	[3]	35,916,000	[3]	33,431,000	[3],[5]	29,843,000	[3]	28,515,000	[3]
Gain on early extinguishment of debt (2)	-13,140,000		0		0			13,100,000
Interest expense	-57,931,000		-51,616,000		-49,814,000
Net income (loss)	78,152,000		113,321,000		56,476,000			18,520,000	[3],[4]	24,297,000	[3]	19,895,000	[3]	15,440,000	[3]	23,136,000	[3]	56,180,000	[3],[5]	17,776,000	[3]	16,229,000	[3]
Net income (loss)	9,053,000		11,040,000		-3,295,000
Depreciation and asset impairments (real estate related) (2)	$12,212,000	[2]	$12,419,000	[2]	$8,245,000	[2]

[1]	Note that revenues for the year ended December 31, 2013 include approximately $9.5 million of other income from the settlement of a lawsuit at Deer Park prior to our acquisition of an additional one-third interest in and the consolidation of the property.
[2]	Represents a gain on early extinguishment of debt that was recorded as part of the refinancing of the debt at Deer Park in August 2013 (See Note 3).
[3]	Quarterly amounts may not add to annual amounts due to the effect of rounding on a quarterly basis.
[4]	For the fourth quarter, net income includes a $7.5 million gain on the sale of our Lincoln City outlet center and a $13.1 million loss on early extinguishment of debt related to the early redemption of senior notes due November 2015.
[5]	For the third quarter, net income includes a $26.0 million gain on our previously held interest in Deer Park upon the acquisition of an additional one-third interest in August 2013, and the consolidation of Deer Park into our financial statements.

Investments_in_Unconsolidated_6

Investments in Unconsolidated Real Estate Joint Ventures - Narrative (Details) (USD $)

12 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

Dec. 31, 2014

Aug. 31, 2013

Nov. 30, 2014

Mar. 31, 2012

Jun. 30, 2013

31-May-14

Jul. 31, 2013

Dec. 31, 2012

Feb. 28, 2015

Dec. 31, 2013

Mar. 31, 2013

Apr. 30, 2014

Oct. 31, 2014

sqft

Schedule of Equity Method Investments [Line Items]

Equity method investments

$208,000,000

$140,200,000

Difference in basis

4,400,000

1,600,000

Area of real estate property

982,000

Joint venture debt outstanding

268,200,000

202,700,000

Net proceeds on sale of real estate

38,993,000

Gain on sale of real estate

7,513,000

Charlotte [Member]

Schedule of Equity Method Investments [Line Items]

Equity method investments

11,600,000

Area of real estate property

398,000

[1]

Number of miles from major city

Joint venture debt outstanding

90,000,000

[1]

Ownership %

50.00%

[1]

50.00%

Deer Park [Member]

Schedule of Equity Method Investments [Line Items]

Basis spread on variable rate

3.25%

Additional Ownership Percentage Acquired

33.30%

Ownership %

66.70%

Galveston/Houston [Member]

Schedule of Equity Method Investments [Line Items]

Equity method investments

1,300,000

7,400,000

Area of real estate property

353,000

Joint venture debt outstanding

65,000,000

Ownership %

50.00%

National Harbor [Member]

Schedule of Equity Method Investments [Line Items]

Equity method investments

9,500,000

16,700,000

Area of real estate property

339,000

336,000

Proceeds from joint venture debt

19,000,000

Joint venture debt outstanding

83,700,000

52,400,000

Ownership %

50.00%

RioCan Canda [Member]

Schedule of Equity Method Investments [Line Items]

Equity method investments

132,500,000

85,700,000

Area of real estate property

870,000

433,000

Joint venture debt outstanding

15,700,000

17,900,000

Ownership %

50.00%

Abandoned development costs

1,400,000

Cookstown [Member]

Schedule of Equity Method Investments [Line Items]

Area of real estate property

305,000

Company portion of contributed capital to the joint venture

27,100,000

Estimated square feet of expansion

149,000

Business acquisition, contingent consideration, potential cash payment

13,800,000

Les Factoreries St. Sauveur Property [Member]

Schedule of Equity Method Investments [Line Items]

Area of real estate property

116,000

Bromont Outlet Mall Property [Member]

Schedule of Equity Method Investments [Line Items]

Area of real estate property

161,000

Ottawa [Member]

Schedule of Equity Method Investments [Line Items]

Area of real estate property

288,000

Square feet of anchor tenant

28,000

Company portion of contributed capital to the joint venture

45,300,000

Payments to acquire real estate

28,700,000

Savannah [Member]

Schedule of Equity Method Investments [Line Items]

Equity method investments

46,500,000

[2]

Area of real estate property

[2]

Ownership %

50.00%

[2]

Company portion of contributed capital to the joint venture

45,200,000

Estimated Square Footage of Real Estate Property When Completed

377,000

Partner's Portion of Contributed Capital to the Joint Venture

7,400,000

Preferred return percentage prior to grand opening date

8.00%

Preferred return percentage after grand opening date

10.00%

Westgate [Member]

Schedule of Equity Method Investments [Line Items]

Equity method investments

14,300,000

16,100,000

Area of real estate property

381,000

332,000

Term of mortgage extension

2 years

Joint venture debt outstanding

54,000,000

43,100,000

Joint venture debt, maximum borrowings

62,000,000

48,300,000

Ownership %

58.00%

Estimated square feet of expansion

50,000

Estimated Square Feet of Expansion when completed

78,000

Estimated Square Footage of Real Estate Property When Completed

409,000

Wisconsin Dells [Member]

Schedule of Equity Method Investments [Line Items]

Equity method investments

2,400,000

2,500,000

Area of real estate property

265,000

Joint venture debt outstanding

24,300,000

Ownership %

50.00%

Mortgages [Member] | Charlotte [Member]

Schedule of Equity Method Investments [Line Items]

Basis spread on variable rate

1.45%

Term of mortgage extension

1 year

Proceeds from joint venture debt

89,400,000

Joint venture debt outstanding

90,000,000

Mortgages [Member] | Galveston/Houston [Member]

Schedule of Equity Method Investments [Line Items]

Basis spread on variable rate

1.50%

Term of mortgage extension

1 year

Proceeds from joint venture debt

65,000,000

Joint venture debt, maximum borrowings

70,000,000

Mortgages [Member] | National Harbor [Member]

Schedule of Equity Method Investments [Line Items]

Basis spread on variable rate

1.65%

Joint venture debt outstanding

83,700,000

Joint venture debt, maximum borrowings

87,000,000

62,000,000

Mortgages [Member] | Savannah [Member]

Schedule of Equity Method Investments [Line Items]

Basis spread on variable rate

1.65%

Term of mortgage extension

1 year

Joint venture debt outstanding

25,500,000

[2]

Joint venture debt, maximum borrowings

93,000,000

Number of mortgage extensions

Mortgages [Member] | Wisconsin Dells [Member]

Schedule of Equity Method Investments [Line Items]

Basis spread on variable rate

2.25%

Joint venture debt outstanding

24,300,000

Joint venture debt, maximum borrowings

24,300,000

Debt instrument, term

10 years

Subsequent Event [Member] | Wisconsin Dells [Member]

Schedule of Equity Method Investments [Line Items]

Net proceeds on sale of real estate

15,600,000

Gain on sale of real estate

$13,900,000

[1]

The negative carrying value is due to the distributions of proceeds from a mortgage loan, as well as quarterly distributions of excess cash flow, exceeding the original contributions from the partners.

[2]

Based on capital contribution and distribution provisions in the joint venture agreement, we expect our economic interest in the venture's cash flow to be greater than the ownership percentage indicated above, which in this case, states our legal interest in this venture. Our economic interest may fluctuate based on a number of factors, including mortgage financing, partnership capital contributions and distributions, and proceeds from gains or losses of asset sales.

Deferred_Charges_Details

Deferred Charges (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Deferred lease costs and other intangibles, gross	$275,261	$320,298
Accumulated amortization	-134,378	-156,717
Deferred lease costs and other intangibles, net	140,883	163,581
Deferred Lease Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Deferred lease costs and other intangibles, gross	61,205	60,657
Above market lease value [Member]
Finite-Lived Intangible Assets [Line Items]
Deferred lease costs and other intangibles, gross	44,144	49,584
Leases, Acquired-in-Place [Member]
Finite-Lived Intangible Assets [Line Items]
Deferred lease costs and other intangibles, gross	69,893	102,085
Tenant Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Deferred lease costs and other intangibles, gross	57,230	62,438
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Deferred lease costs and other intangibles, gross	$42,789	$45,534

Deferred_Charges_Schedule_of_E

Deferred Charges - Schedule of Expected Amortization Expense (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified	Dec. 31, 2014
Above and Below Market Lease Value [Member]
2015	$2,324
2016	1,957
2017	1,997
2018	1,880
2019	466
Total	8,624
Deferred Lease Costs and Other Intangibles [Member]
2015	11,478
2016	9,977
2017	8,195
2018	7,220
2019	4,922
Total	$41,792

Deferred_Charges_Schedule_of_D

Deferred Charges - Schedule of Deferred Debt Origination Costs (Details) (Tanger Factory Outlet Centers, Inc [Member], USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Tanger Factory Outlet Centers, Inc [Member]
Deferred Debt Origination Costs [Line Items]
Deferred debt origination costs	$22,126	$20,112
Accumulated amortization	-10,000	-9,294
Deferred debt origination costs, net	$12,126	$10,818

Deferred_Charges_Narrative_Det

Deferred Charges - Narrative (Details) (USD $)	12 Months Ended
Deferred Charges - Narrative (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Amortization of above and below Market Leases	($2,800,000)	($686,000)	$803,000
Deferred Lease Costs and Other Intangibles [Member]
Amortization of Intangible Assets	20,900,000	19,800,000	24,100,000
Other Liabilities [Member]
Below Market Lease, Net	12,900,000	15,700,000
Tanger Factory Outlet Centers, Inc [Member]
Amortization of Financing Costs	$2,382,000	$2,194,000	$2,313,000

Debt_of_the_Company_Details

Debt of the Company (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Tanger Factory Outlet Centers, Inc [Member]
Line of Credit Facility [Line Items]
Unsecured lines of credit	$111,000,000	$16,200,000
Tanger Properties Limited Partnership [Member]
Line of Credit Facility [Line Items]
Unsecured lines of credit	111,000,000	16,200,000
Debt [Member] \| Tanger Factory Outlet Centers, Inc [Member] \| Line of Credit [Member]
Line of Credit Facility [Line Items]
Unsecured lines of credit total borrowing capacity	520,000,000
Debt [Member] \| Tanger Factory Outlet Centers, Inc [Member] \| Unsecured Term Loan [Member]
Line of Credit Facility [Line Items]
Guarantor obligations, current carrying value	250,000,000
Debt [Member] \| Tanger Properties Limited Partnership [Member] \| Line of Credit [Member]
Line of Credit Facility [Line Items]
Unsecured lines of credit	111,000,000	16,200,000
Ocean City Factory Outlets [Member] \| Debt [Member] \| Tanger Factory Outlet Centers, Inc [Member] \| Mortgages [Member]
Line of Credit Facility [Line Items]
Guarantor obligations, current carrying value	$17,900,000

Debt_of_the_Operating_Partners2

Debt of the Operating Partnership (Details) (Tanger Properties Limited Partnership [Member], USD $)	1 Months Ended		12 Months Ended		1 Months Ended
	Jul. 31, 2014	Feb. 29, 2012	Dec. 31, 2014	Dec. 31, 2013	Aug. 31, 2013	Dec. 31, 2014	Oct. 31, 2013	Sep. 30, 2013	Nov. 30, 2014	Nov. 30, 2013
Debt Instrument [Line Items]
Principal			$1,446,830,000	$1,330,398,000		$1,446,830,000
Premium (Discount), Net			-3,636,000	-2,349,000		-3,636,000
Senior Notes [Member]
Debt Instrument [Line Items]
Premium (Discount), Net			-6,426,000	-5,752,000		-6,426,000
Senior Notes [Member] \| 6.15% Senior Notes [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)			6.15%	6.15%		6.15%			6.15%
Principal			0	250,000,000		0			250,000,000
Discount			0	-211,000		0
Senior Notes [Member] \| 6.125% Senior Notes [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)			6.13%	6.13%		6.13%
Principal			300,000,000	300,000,000		300,000,000
Discount			-1,276,000	-1,469,000		-1,276,000
Senior Notes [Member] \| 3.875% Senior Notes [Member] [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)			3.88%	3.88%		3.88%				3.88%
Principal			250,000,000	250,000,000		250,000,000				250,000,000
Discount			-3,732,000	-4,072,000		-3,732,000
Senior Notes [Member] \| 3.75% Senior Notes [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)			3.75%			3.75%			3.75%
Principal			250,000,000	0		250,000,000			250,000,000
Discount			-1,418,000	0		-1,418,000
Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)			1.50%	1.50%		1.50%
Principal			10,000,000	10,000,000		10,000,000
Discount			-241,000	-396,000		-241,000
Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.05%	1.60%	1.05%	1.60%
Principal			250,000,000	250,000,000		250,000,000
Discount			0	0		0
Premium (Discount), Net			-241,000	-396,000		-241,000
Unsecured Term Note [Member]
Debt Instrument [Line Items]
Basis spread on variable rate			1.30%	1.30%
Principal			7,500,000	7,500,000		7,500,000
Discount			0	0		0
Mortgages [Member]
Debt Instrument [Line Items]
Premium (Discount), Net			3,031,000	3,799,000		3,031,000
Mortgages [Member] \| Atlantic City Outlets The Walk [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s), Minimum			5.14%	5.14%
Stated Interest Rate(s), Maximum			7.65%	7.65%
Principal			45,997,000	48,535,000		45,997,000
Premium			3,694,000	4,091,000		3,694,000
Mortgages [Member] \| Deer Park [Member]
Debt Instrument [Line Items]
Basis spread on variable rate			1.50%	1.50%	1.50%
Principal			150,000,000	150,000,000	150,000,000	150,000,000
Discount			-1,161,000	-1,478,000	-1,600,000	-1,161,000
Mortgages [Member] \| The Outlets at Hershey [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s), Minimum			5.17%	5.17%
Stated Interest Rate(s), Maximum			8.00%	8.00%
Principal			29,271,000	29,970,000		29,271,000
Premium			399,000	993,000		399,000
Mortgages [Member] \| Ocean City Factory Outlets [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)			5.24%	5.24%		5.24%
Principal			17,827,000	18,193,000		17,827,000
Premium			99,000	193,000		99,000
Mortgages [Member] \| Foxwoods [Member]
Debt Instrument [Line Items]
Basis spread on variable rate						1.65%
Principal			25,200,000	0		25,200,000
Premium			0	0		0
Line of Credit [Member]
Debt Instrument [Line Items]
Basis spread on variable rate			1.00%	1.00%			1.00%	1.10%
Principal			111,000,000	16,200,000		111,000,000
Discount			$0	$0		$0

Debt_of_the_Operating_Partners3

Debt of the Operating Partnership - Debt Maturities (Details) (Tanger Properties Limited Partnership [Member], USD $)	Dec. 31, 2014	Dec. 31, 2013
Tanger Properties Limited Partnership [Member]
Schedule of Maturities of Debt [Line Items]
2015	$32,343,000
2016	30,283,000
2017	146,743,000
2018	153,183,000
2019	253,369,000
Thereafter	830,909,000
Subtotal	1,446,830,000	1,330,398,000
Net discount	-3,636,000	-2,349,000
Total debt	$1,443,194,000	$1,328,049,000

Debt_of_the_Operating_Partners4

Debt of the Operating Partnership Debt of the Operating Partnership - Narrative (Details) (USD $)	12 Months Ended			1 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Aug. 31, 2013	Oct. 31, 2013	Sep. 30, 2013	Nov. 30, 2014	Nov. 30, 2013	Jul. 31, 2014	Feb. 29, 2012	Dec. 31, 2011
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Extension	Aug. 31, 2013	Oct. 31, 2013	Sep. 30, 2013	Nov. 30, 2014	Nov. 30, 2013	Jul. 31, 2014	Feb. 29, 2012	Dec. 31, 2011
Tanger Properties Limited Partnership [Member]
Debt Instrument [Line Items]
Principal balance of debt	$1,446,830,000	$1,330,398,000		$1,446,830,000
Loss on early extinguishment of debt	-13,140,000	0	0
Proceeds from Issuance of Long-term Debt	931,608,000	810,803,000	585,800,000
Long-term Debt	1,443,194,000	1,328,049,000		1,443,194,000
Tanger Properties Limited Partnership [Member] \| Mortgages [Member]
Debt Instrument [Line Items]
Collateral for mortgages payable	602,700,000			602,700,000
Tanger Properties Limited Partnership [Member] \| Mortgages [Member] \| Atlantic City Outlets The Walk [Member]
Debt Instrument [Line Items]
Effective interest rate												5.05%
Principal balance of debt	45,997,000	48,535,000		45,997,000
Tanger Properties Limited Partnership [Member] \| Mortgages [Member] \| Ocean City Factory Outlets [Member]
Debt Instrument [Line Items]
Effective interest rate												4.68%
Principal balance of debt	17,827,000	18,193,000		17,827,000
Stated Interest Rate(s)	5.24%	5.24%		5.24%
Tanger Properties Limited Partnership [Member] \| Mortgages [Member] \| The Outlets at Hershey [Member]
Debt Instrument [Line Items]
Effective interest rate												3.40%
Principal balance of debt	29,271,000	29,970,000		29,271,000
Tanger Properties Limited Partnership [Member] \| Mortgages [Member] \| Foxwoods [Member]
Debt Instrument [Line Items]
Maximum Borrowing Capacity	70,300,000			70,300,000
Basis spread on variable rate				1.65%
Number of mortgage extensions				2
Term of mortgage extension				1 year
Principal balance of debt	25,200,000	0		25,200,000
Tanger Properties Limited Partnership [Member] \| Mortgages [Member] \| Deer Park [Member]
Debt Instrument [Line Items]
Effective interest rate						2.80%
Basis spread on variable rate	1.50%	1.50%			1.50%
Principal balance of debt	150,000,000	150,000,000		150,000,000	150,000,000
Discount	1,161,000	1,478,000		1,161,000	1,600,000
Term of mortgage					5 years
Derivative, Fixed Interest Rate						1.30%
Tanger Properties Limited Partnership [Member] \| Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Effective interest rate												3.15%
Principal balance of debt	10,000,000	10,000,000		10,000,000
Stated Interest Rate(s)	1.50%	1.50%		1.50%
Discount	241,000	396,000		241,000
Tanger Properties Limited Partnership [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Maximum Borrowing Capacity						520,000,000
Liquidity Line, Maximum Borrowings	20,000,000			20,000,000
Syndicated Line, Maximum Borrowings	500,000,000			500,000,000
Syndicated Line, Amount That The Line May Be Increased	750,000,000			750,000,000
Percentage of funds from operations allowed on a cumulative basis required for debt covenants	95.00%
Basis spread on variable rate	1.00%	1.00%				1.00%	1.10%
Principal balance of debt	111,000,000	16,200,000		111,000,000
Discount	0	0		0
Line of Credit Facility, Commitment Fee Percentage						0.15%	0.18%
Debt Issuance Cost						1,500,000
Tanger Properties Limited Partnership [Member] \| Senior Notes [Member] \| 3.75% Senior Notes [Member]
Debt Instrument [Line Items]
Principal balance of debt	250,000,000	0		250,000,000				250,000,000
Debt Instrument, Pricing Percentage of Principal								99.43%
Debt Instrument, Percentage Yield to Maturity								3.82%
Stated Interest Rate(s)	3.75%			3.75%				3.75%
Proceeds from Issuance of Long-term Debt								246,200,000
Discount	1,418,000	0		1,418,000
Tanger Properties Limited Partnership [Member] \| Senior Notes [Member] \| 6.15% Senior Notes [Member]
Debt Instrument [Line Items]
Principal balance of debt	0	250,000,000		0				250,000,000
Stated Interest Rate(s)	6.15%	6.15%		6.15%				6.15%
Loss on early extinguishment of debt				13,100,000
Discount	0	211,000		0
Tanger Properties Limited Partnership [Member] \| Senior Notes [Member] \| 3.875% Senior Notes [Member] [Member]
Debt Instrument [Line Items]
Principal balance of debt	250,000,000	250,000,000		250,000,000					250,000,000
Debt Instrument, Pricing Percentage of Principal									98.36%
Debt Instrument, Percentage Yield to Maturity									4.08%
Stated Interest Rate(s)	3.88%	3.88%		3.88%					3.88%
Proceeds from Issuance of Long-term Debt									243,600,000
Discount	3,732,000	4,072,000		3,732,000
Tanger Properties Limited Partnership [Member] \| Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.05%	1.60%								1.05%	1.60%
Principal balance of debt	250,000,000	250,000,000		250,000,000
Discount	0	0		0
Term of loan											7 years
Debt [Member] \| Tanger Properties Limited Partnership [Member] \| Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Long-term Debt											250,000,000
Minimum [Member]
Debt Instrument [Line Items]
Percent of guaranty of completion and principal guaranty	5.00%			5.00%
Maximum [Member]
Debt Instrument [Line Items]
Percent of guaranty of completion and principal guaranty	100.00%			100.00%

Derivative_Financial_Instrumen2

Derivative Financial Instruments - Classifications on Consolidated Balance Sheets (Details) (Designated as Hedging Instrument [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Derivatives, Fair Value [Line Items]
Notional Amount	150,000
Fair Value	95	1,382
Interest Rate Swap One [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	50,000
Company Fixed Pay Rate	1.31%
Fair Value	26	455
Interest Rate Swap Two [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	50,000
Company Fixed Pay Rate	1.30%
Fair Value	40	440
Interest Rate Swap Three [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	50,000
Company Fixed Pay Rate	1.30%
Fair Value	29	$487
London Interbank Offered Rate (LIBOR) [Member] \| Interest Rate Swap One [Member]
Derivatives, Fair Value [Line Items]
Bank Pay Rate	1 month
London Interbank Offered Rate (LIBOR) [Member] \| Interest Rate Swap Two [Member]
Derivatives, Fair Value [Line Items]
Bank Pay Rate	1 month
London Interbank Offered Rate (LIBOR) [Member] \| Interest Rate Swap Three [Member]
Derivatives, Fair Value [Line Items]
Bank Pay Rate	1 month

Derivative_Financial_Instrumen3

Derivative Financial Instruments - Gain (Loss) Recognized and Reclassified (Details) (Designated as Hedging Instrument [Member], Cash Flow Hedging [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	($1,287)	$1,382	$0
Treasury Lock [Member] \| Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	$741	$371	$351

Derivative_Financial_Instrumen4

Derivative Financial Instruments - Narrative (Details) (Cash Flow Hedging [Member], Designated as Hedging Instrument [Member], USD $)	12 Months Ended
	Dec. 31, 2005	Dec. 31, 2013
	derivative_agreement	Dec. 31, 2013
Derivative [Line Items]
Unamortized balance of settled agreements		$741,000
Treasury Lock [Member]
Derivative [Line Items]
Number of derivative agreements	2
Debt instrument, term	10 years
Proceeds from hedge	$3,200,000

Fair_Value_Measurements_Measur

Fair Value Measurements - Measurement Hierarchy (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps (prepaids and other assets)	$95,000	$1,382,000
Total assets	95,000	1,382,000
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps (prepaids and other assets)	0	0
Total assets	0	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps (prepaids and other assets)	95,000	1,382,000
Total assets	95,000	1,382,000
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps (prepaids and other assets)	0	0
Total assets	$0	$0

Fair_Value_Measurements_Narrat

Fair Value Measurements - Narrative (Details) (Tanger Properties Limited Partnership [Member], USD $)	Dec. 31, 2014	Dec. 31, 2013
Tanger Properties Limited Partnership [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$1,500,000,000	$1,400,000,000
Long-term debt	$1,443,194,000	$1,328,049,000

Shareholders_Equity_of_the_Com1

Shareholders' Equity of the Company (Details)	12 Months Ended
Shareholders' Equity of the Company (Details)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Tanger Factory Outlet Centers, Inc [Member]
Entity Information [Line Items]
Common shares issued in exchange for Operating Partnership units (in shares)	66,606	67,428	6,730,028
Convertible units, shares issued upon conversion into common shares	1
Class A Limited Partnership Units [Member] \| Tanger Properties Limited Partnership [Member]
Entity Information [Line Items]
Common shares issued in exchange for Operating Partnership units (in shares)	-66,606	-67,428	-6,730,028
Number of operating partnership units owned by family limited partners	5,078,406	5,145,012

Partners_Equity_of_the_Operati2

Partners' Equity of the Operating Partnership (Details) (Tanger Properties Limited Partnership [Member])	1 Months Ended	12 Months Ended
	Aug. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
General and Limited Partners' Capital Account, Units [Roll Forward]
General partner (in shares)		1,000,000
Shares Paid for Tax Withholding for Share Based Compensation		-412,239
Issuance of restricted shares (in shares)		1,302,729	332,373	566,000
Units issued upon exercise of options		47,000	44,500	37,700
Units issued as consideration for business acquisition	450,576		450,576
General partner (in shares)		1,000,000	1,000,000
General Partner [Member]
General and Limited Partners' Capital Account, Units [Roll Forward]
General partner (in shares)		1,000,000	1,000,000	1,000,000
Shares Paid for Tax Withholding for Share Based Compensation		0
Exchange of Class A limited partnership units		0	0	0
Issuance of restricted shares (in shares)		0	0	0
Units issued upon exercise of options		0	0	0
Units issued as consideration for business acquisition			0
General partner (in shares)		1,000,000	1,000,000	1,000,000
Class A Limited Partnership Units [Member]
General and Limited Partners' Capital Account, Units [Roll Forward]
Limited partners (in shares)		5,145,012	4,761,864	11,491,892
Shares Paid for Tax Withholding for Share Based Compensation		0
Exchange of Class A limited partnership units		-66,606	-67,428	-6,730,028
Issuance of restricted shares (in shares)		0	0	0
Units issued upon exercise of options		0	0	0
Units issued as consideration for business acquisition			450,576
Limited partners (in shares)		5,078,406	5,145,012	4,761,864
Class B Limited Partnership Units [Member]
General and Limited Partners' Capital Account, Units [Roll Forward]
Limited partners (in shares)		93,505,685	93,061,384	85,727,656
Shares Paid for Tax Withholding for Share Based Compensation		-412,239
Exchange of Class A limited partnership units		66,606	67,428	6,730,028
Issuance of restricted shares (in shares)		1,302,729	332,373	566,000
Units issued upon exercise of options		47,000	44,500	37,700
Units issued as consideration for business acquisition			0
Limited partners (in shares)		94,509,781	93,505,685	93,061,384
Limited partners [Member]
General and Limited Partners' Capital Account, Units [Roll Forward]
Limited partners (in shares)		98,650,697	97,823,248	97,219,548
Shares Paid for Tax Withholding for Share Based Compensation		-412,239
Exchange of Class A limited partnership units		0	0	0
Issuance of restricted shares (in shares)		1,302,729	332,373	566,000
Units issued upon exercise of options		47,000	44,500	37,700
Units issued as consideration for business acquisition			450,576
Limited partners (in shares)		99,588,187	98,650,697	97,823,248

Partners_Equity_of_the_Operati3

Partners' Equity of the Operating Partnership - Narrative (Details)	1 Months Ended	12 Months Ended
	Aug. 31, 2013	Dec. 31, 2013
Tanger Properties Limited Partnership [Member]
Schedule of Partners' Equity of the Operating Partnership [Line Items]
Stock split, conversion ratio	4
Exchange ratio of partnership units for common shares	1
Partnership unit exchange ratio	4
Units issued as consideration for business acquisition	450,576	450,576
Deer Park [Member]
Schedule of Partners' Equity of the Operating Partnership [Line Items]
Additional Ownership Percentage Acquired	33.30%

Noncontrolling_Interests_Detai

Noncontrolling Interests (Details) (Tanger Factory Outlet Centers, Inc [Member], USD $)

3 Months Ended

12 Months Ended

In Thousands, except Share data, unless otherwise specified

Dec. 31, 2014

Sep. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Tanger Factory Outlet Centers, Inc [Member]

Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]

Common shares issued in exchange for Operating Partnership units (in shares)

66,606

67,428

6,730,028

Net income attributable to Tanger Factory Outlet Centers, Inc.

$17,542

[1],[2]

$23,003

[1]

$18,850

[1]

$14,616

[1]

$21,936

[1]

$53,294

[1],[3]

$16,888

[1]

$15,439

[1]

$74,011

$107,557

$53,228

Increase in Tanger Factory Outlet Centers, Inc. paid-in-capital adjustments to noncontrolling interests (1)

741

[4]

11,130

[4]

Changes from net income attributable to Tanger Factory Outlet Centers, Inc. and transfers from noncontrolling interest

$74,752

$118,687

[1]

Quarterly amounts may not add to annual amounts due to the effect of rounding on a quarterly basis.

[2]

For the fourth quarter, net income includes a $7.5 million gain on the sale of our Lincoln City outlet center and a $13.1 million loss on early extinguishment of debt related to the early redemption of senior notes due November 2015.

[3]

For the third quarter, net income includes a $26.0 million gain on our previously held interest in Deer Park upon the acquisition of an additional one-third interest in August 2013, and the consolidation of Deer Park into our financial statements.

[4]

In 2014 and 2013, adjustments of the noncontrolling interest were made as a result of increases in the Company's ownership of the Operating Partnership from additional units received in connection with the Company's issuance of common shares upon exercise of options, share-based compensation and the issuance of common shares upon exchange of Class A common limited partnership units.

Earnings_Per_Share_of_the_Comp2

Earnings Per Share of the Company (Details) (Tanger Factory Outlet Centers, Inc [Member], USD $)	1 Months Ended	3 Months Ended																12 Months Ended
In Thousands, except Share data, unless otherwise specified	Jan. 31, 2014	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Tanger Factory Outlet Centers, Inc [Member]
Numerator
Net income attributable to Tanger Factory Outlet Centers, Inc.		$17,542	[1],[2]	$23,003	[1]	$18,850	[1]	$14,616	[1]	$21,936	[1]	$53,294	[1],[3]	$16,888	[1]	$15,439	[1]	$74,011	$107,557	$53,228
Less allocation of earnings to participating securities																		-1,872	-1,126	-784
Net income available to common shareholders/unitholders of Tanger Factory Outlet Centers, Inc./the Operating Partnership		$17,061	[1],[2]	$22,522	[1]	$18,369	[1]	$14,187	[1]	$21,706	[1]	$52,685	[1],[3]	$16,657	[1]	$15,245	[1]	$72,139	$106,431	$52,444
Denominator
Basic weighted average common shares (in shares)																		93,769,000	93,311,000	91,733,000
Effect of notional units (in shares)																		0	849,000	846,000
Effect of outstanding options and restricted common shares (in shares)																		70,000	87,000	82,000
Diluted weighted average common shares (in shares)																		93,839,000	94,247,000	92,661,000
Basic earnings per common share:
Net income, basic (in dollars per share)		$0.18	[1],[2]	$0.24	[1]	$0.20	[1]	$0.15	[1]	$0.23	[1]	$0.56	[1],[3]	$0.18	[1]	$0.16	[1]	$0.77	$1.14	$0.57
Diluted earnings per common share:
Net income, diluted (in dollars per share)		$0.18	[1],[2]	$0.24	[1]	$0.20	[1]	$0.15	[1]	$0.23	[1]	$0.56	[1],[3]	$0.18	[1]	$0.16	[1]	$0.77	$1.13	$0.57
Number of notional units converted to restricted common shares	933,769
Antidilutive securities excluded from computation of earnings per share (in shares)																		259,000	0	17,600

[1]	Quarterly amounts may not add to annual amounts due to the effect of rounding on a quarterly basis.
[2]	For the fourth quarter, net income includes a $7.5 million gain on the sale of our Lincoln City outlet center and a $13.1 million loss on early extinguishment of debt related to the early redemption of senior notes due November 2015.
[3]	For the third quarter, net income includes a $26.0 million gain on our previously held interest in Deer Park upon the acquisition of an additional one-third interest in August 2013, and the consolidation of Deer Park into our financial statements.

Earnings_Per_Unit_of_the_Opera2

Earnings Per Unit of the Operating Partnership (Details) (Tanger Properties Limited Partnership [Member], USD $)	1 Months Ended		12 Months Ended
In Thousands, except Share data, unless otherwise specified	Jan. 31, 2014	Aug. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Tanger Properties Limited Partnership [Member]
Numerator
Net income attributable to partners of the Operating Partnership			$78,048	$113,200	$56,495
Less allocation of earnings to participating securities			-1,873	-1,129	-784
Net income available to common shareholders/unitholders of Tanger Factory Outlet Centers, Inc./the Operating Partnership			$76,175	$112,071	$55,711
Denominator
Basic weighted average common shares (in shares)			98,883,000	98,193,000	97,677,000
Effect of notional units (in shares)			0	849,000	846,000
Effect of outstanding options and restricted common shares (in shares)			70,000	87,000	82,000
Diluted weighted average common shares (in shares)			98,953,000	99,129,000	98,605,000
Basic earnings per common unit:
Net income, basic (in dollars per share)			$0.77	$1.14	$0.57
Diluted earnings per common unit:
Net income, diluted (in dollars per share)			$0.77	$1.13	$0.57
Stock split, conversion ratio		4
Number of notional units converted to restricted common units	933,769
Antidilutive securities excluded from computation of earnings per share (in shares)			259,000	0	17,600

EquityBased_Compensation_Optio

Equity-Based Compensation - Options Narrative (Details) (Tanger Factory Outlet Centers, Inc [Member], USD $)	1 Months Ended	3 Months Ended	12 Months Ended
	Feb. 28, 2014	Mar. 31, 2014	Dec. 31, 2014	Apr. 04, 2014
Tanger Factory Outlet Centers, Inc [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common shares that may be issued				15,400,000
Total Options Granted, to Date, Net of Forfeitures			7,583,960
Total Restricted Shares Granted, To Date, Net of Forfeitures			4,573,683
Total Number of Common Shares The Could Be Issued Upon Vesting of Notional Units Granted, to Date			644,850
Shares remaining available for future issuance			2,597,507
Grants of options to non-executive employees	282,500		282,500
Options granted price (in dollars per share)		$32.02	$32.02
Options expiration period from date of grant			10 years
Percentage of Options Becoming Exercisable Each Year			20.00%
Share-based compensation period in which option is exercisable			5 years
Award Vesting Period			1 year
Expected Dividend Rate			2.80%
Expected Life Term			7 years
Expected Volatility Rate			32.00%
Risk Free Interest Rate			2.46%
Forfeiture Rate Used, Minimum			3.00%
Forfeiture Rate Used, Maximum			13.50%

EquityBased_Compensation_Outpe

Equity-Based Compensation - Outperformance Plan Narrative (Details) (Tanger Factory Outlet Centers, Inc [Member], USD $)	12 Months Ended			48 Months Ended	1 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Feb. 28, 2014	Feb. 28, 2013	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Award Measurement Period				4 years
Maximum Potential Share-Based Compensation		$32.20		$32.20
Shares Paid for Tax Withholding for Share Based Compensation	412,239	0	0
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Of Shares That May Be Earned					329,700	315,150
Share-based Award Measurement Period					3 years	3 years
Percent of share price appreciation					35.00%	35.00%
Threshold Percentage for Performance Target					70.00%	70.00%
Seventy percent of the performance shares [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of Total Shares Available to be Awarded					70.00%	70.00%
Seventy percent of the performance shares [Member] \| Price appreciation minimum [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of share price appreciation					25.00%	25.00%
Percent of Shares Earned if Threshold Met					33.33%	33.33%
Seventy percent of the performance shares [Member] \| Price appreciation middle [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of share price appreciation					30.00%	30.00%
Percent of Shares Earned if Threshold Met					66.67%	66.67%
Seventy percent of the performance shares [Member] \| Price appreciation maximum [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of share price appreciation					35.00%	35.00%
Percent of Shares Earned if Threshold Met					100.00%	100.00%
Thirty percent of the performance shares [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of Total Shares Available to be Awarded					30.00%	30.00%
Thirty percent of the performance shares [Member] \| Price appreciation minimum [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of share price appreciation					50.00%	50.00%
Percent of Shares Earned if Threshold Met					33.33%	33.33%
Thirty percent of the performance shares [Member] \| Price appreciation middle [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of share price appreciation					60.00%	60.00%
Percent of Shares Earned if Threshold Met					66.67%	66.67%
Thirty percent of the performance shares [Member] \| Price appreciation maximum [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of share price appreciation					70.00%	70.00%
Percent of Shares Earned if Threshold Met					100.00%	100.00%
Scenario, Forecast [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum Potential Share-Based Compensation							$14.30	$13.30
December 31, 2015 [Member] \| January 4, 2016 [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Percentage						50.00%
December 31, 2015 [Member] \| January 3, 2017 [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Percentage						50.00%

EquityBased_Compensation_Restr

Equity-Based Compensation - Restricted Common Shares Narrative (Details) (Tanger Factory Outlet Centers, Inc [Member], USD $)	1 Months Ended	12 Months Ended			1 Months Ended	0 Months Ended
	Jan. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Feb. 29, 2012	Feb. 28, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	933,769	1,307,729
Award Vesting Period		1 year
Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted		373,960	349,373	346,000
Independent Director's Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Period		3 years
Senior Executive Officer's Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Period		5 years
Chief Executive Officer's Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement award holding period		3 years
Restricted Shares CEO [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Restricted Common Shares Granted to Company CEO					225,000
Grant Date Fair Value					$25.44
Fully Vested [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Restricted Common Shares Granted to Company CEO						45,000
Service Condition [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Restricted Common Shares Granted to Company CEO						90,000
Vesting Period of Restricted Shares Granted to Company CEO						5 years
Service and Performance Conditions [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Restricted Common Shares Granted to Company CEO						90,000
Vesting Period of Restricted Shares Granted to Company CEO						5 years

EquityBased_Compensation_Multi

Equity-Based Compensation - Multi Year Performance Plan Narrative (Details) (Tanger Factory Outlet Centers, Inc [Member], USD $)	1 Months Ended	3 Months Ended	12 Months Ended	48 Months Ended
In Millions, except Share data, unless otherwise specified	Jan. 31, 2014	Mar. 31, 2010	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Notional Units, Grants in Period		392,000
Share-based Compensation, performance period				4 years
Maximum Potential Share-Based Compensation				$32.20
Share-based Award Measurement Period				4 years
Granted	933,769		1,307,729
Cumulative Dividends				$3.80
Price appreciation minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Notional Units Conversion Ratio				1
Price appreciation middle [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Notional Units Conversion Ratio				2
Price appreciation maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Notional Units Conversion Ratio				3

EquityBased_Compensation_Share

Equity-Based Compensation - Share-Based Compensation Expense (Details) (Tanger Factory Outlet Centers, Inc [Member], USD $)	12 Months Ended				0 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012		Feb. 28, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$14,750	$11,376	$10,676	[1]
Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	9,978	8,354	8,497	[1]
Notional Unit Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	4,313	2,847	1,970	[1]
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	459	175	209	[1]
Fully Vested [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Restricted Common Shares Granted to Company CEO					45,000
Fully Vested [Member] \| Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense			$1,300

[1]	For the year ended DecemberB 31, 2012, includes approximately $1.3 million of compensation expense related to 45,000 common shares that vested immediately upon grant related to the Employment Agreement described above.

EquityBased_Compensation_Exerc

Equity-Based Compensation - Exercise Price (Details) (Tanger Factory Outlet Centers, Inc [Member], USD $)	12 Months Ended
	Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Options	370,500
Options Outstanding, Weighted average exercise price (in dollars per share)	$30.20
Weighted remaining contractual life in years	8 years 1 month 15 days
Options Exercisable, Options	52,600
Options Exercisable, Weighted average exercise price (in dollars per share)	$26.06
Exercise price 26.06 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Options	113,000
Options Outstanding, Weighted average exercise price (in dollars per share)	$26.06
Weighted remaining contractual life in years	6 years 1 month 3 days
Options Exercisable, Options	52,600
Options Exercisable, Weighted average exercise price (in dollars per share)	$26.06
Exercise price 32.02 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Options	257,500
Options Outstanding, Weighted average exercise price (in dollars per share)	$32.02
Weighted remaining contractual life in years	9 years 0 months 5 days
Options Exercisable, Options	0
Options Exercisable, Weighted average exercise price (in dollars per share)	$0

EquityBased_Compensation_Optio1

Equity-Based Compensation - Option Activity (Details) (Tanger Factory Outlet Centers, Inc [Member], USD $)	1 Months Ended	3 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Feb. 28, 2014	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Tanger Factory Outlet Centers, Inc [Member]
Shares
Beginning balance		166,300	166,300
Granted	282,500		282,500
Exercised			-47,000	-44,500	-37,700
Forfeited			-31,300
Ending balance			370,500	166,300
Weighted-average exercise price
Beginning balance (in dollars per share)		$24.13	$24.13
Granted (in dollars per share)		$32.02	$32.02
Exercised (in dollars per share)			$19.22
Forfeited (in dollars per share)			$31.11
Ending balance (in dollars per share)			$30.20	$24.13
Weighted-average remaining contractual life in years, outstanding			8 years 1 month 15 days
Aggregate intrinsic value, outstanding			$2,759
Vested and Expected to Vest
Vested and Expected to Vest, Shares			291,661
Vested and Expected to Vest, Weighted-average exercise price (in dollars per share)			$30.07
Vested and Expected to Vest, Weighted-average remaining contractual life in years			8 years 0 months 17 days
Vested and Expected to Vest, Aggregate intrinsic value			2,212
Exercisable
Exercisable, Shares			52,600
Exercisable, Weighted-average exercise price (in dollars per share)			$26.06
Exercisable, Weighted-average remaining contractual life in years			6 years 0 months 9 days
Exercisable, Aggregate intrinsic value			$610

EquityBased_Compensation_Restr1

Equity-Based Compensation - Restricted Share Activity (Details) (Tanger Factory Outlet Centers, Inc [Member], USD $)	1 Months Ended	12 Months Ended
	Jan. 31, 2014	Dec. 31, 2014
Tanger Factory Outlet Centers, Inc [Member]
Number of shares
Beginning balance	1,057,966	1,057,966
Granted	933,769	1,307,729
Vested		-1,266,245
Forfeited		0
Ending balance		1,099,450
Weighted-average grant date fair value
Beginning balance (in dollars per share)	$26.91	$26.91
Granted (in dollars per share)		$26.50
Vested (in dollars per share)		$24.67
Forfeited (in dollars per share)		$0
Ending balance (in dollars per share)		$29.01

EquityBased_Compensation_Narra

Equity-Based Compensation - Narrative (Details) (Tanger Factory Outlet Centers, Inc [Member], USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Feb. 28, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocation of recognized period costs, capitalized amount	$709,000	$367,000	$368,000
Intrinsic value of options exercised during the period	724,000	905,000	716,000
Total value of restricted common shares vested	46,600,000	10,900,000	10,600,000
Shares Paid for Tax Withholding for Share Based Compensation	412,239	0	0
Payments for the employees' tax obligations to taxing authorities	15,520,000	0	0
Compensation cost not yet recognized	$30,900,000
Period for recognition or unrecognized compensation costs	2 years 11 months 5 days
Service Condition [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period of Restricted Shares Granted to Company CEO				5 years
Service and Performance Conditions [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period of Restricted Shares Granted to Company CEO				5 years

Accumulated_Other_Comprehensiv4

Accumulated Other Comprehensive Income of the Company - Balances of Each Component of AOCI (Details) (Tanger Factory Outlet Centers, Inc [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	($2,428)
Unrealized loss on foreign currency translation adjustments	-10,042	-4,968	-5
Change in fair value of cash flow hedges	-1,287	1,382	0
Accumulated other comprehensive income (loss), ending balance	-14,023	-2,428
Parent [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	-2,428	1,200	1,535
Amortization of cash flow hedges	-852	-353	-330
Unrealized loss on foreign currency translation adjustments	-9,523	-4,708	-5
Change in fair value of cash flow hedges	-1,220	1,310
Realized loss on foreign currency		123
Accumulated other comprehensive income (loss), ending balance	-14,023	-2,428	1,200
Parent [Member] \| Foreign Currency [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	-4,590	-5	0
Unrealized loss on foreign currency translation adjustments	-9,523	-4,708	-5
Realized loss on foreign currency		123
Accumulated other comprehensive income (loss), ending balance	-14,113	-4,590	-5
Parent [Member] \| Cash flow hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	2,162	1,205	1,535
Amortization of cash flow hedges	-852	-353	-330
Change in fair value of cash flow hedges	-1,220	1,310
Realized loss on foreign currency		0
Accumulated other comprehensive income (loss), ending balance	90	2,162	1,205
Noncontrolling interest in Operating Partnership [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	-293	-93	-72
Amortization of cash flow hedges	111	-18	-21
Unrealized loss on foreign currency translation adjustments	-519	-260	0
Change in fair value of cash flow hedges	-67	0
Realized loss on foreign currency		78
Accumulated other comprehensive income (loss), ending balance	-768	-293	-93
Noncontrolling interest in Operating Partnership [Member] \| Foreign Currency [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	-254	0	0
Unrealized loss on foreign currency translation adjustments	-519	-260	0
Realized loss on foreign currency		6
Accumulated other comprehensive income (loss), ending balance	-773	-254	0
Noncontrolling interest in Operating Partnership [Member] \| Cash flow hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	-39	-93	-72
Amortization of cash flow hedges	111	-18	-21
Change in fair value of cash flow hedges	-67	0
Realized loss on foreign currency		72
Accumulated other comprehensive income (loss), ending balance	$5	($39)	($93)

Accumulated_Other_Comprehensiv5

Accumulated Other Comprehensive Income of the Company - Reclassification Out of AOCI (Details) (Tanger Factory Outlet Centers, Inc [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from accumulated other comprehensive income	($741)	($242)	($351)
Interest Expense [Member] \| Cash flow hedges [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from accumulated other comprehensive income	-852	-353	-330
Interest Expense [Member] \| Foreign Currency [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from accumulated other comprehensive income	$0	$123	$0

Accumulated_Other_Comprehensiv6

Accumulated Other Comprehensive Income of the Operating Partnership - Balances of Each Component (Details) (Tanger Properties Limited Partnership [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	($2,721)	$1,107	$1,463
Amortization of cash flow hedges	-741	-371	-351
Unrealized loss on foreign currency translation adjustments	-10,042	-4,968	-5
Change in fair value of cash flow hedges	-1,287	1,382	0
Realized loss on foreign currency		129
Accumulated other comprehensive income (loss), ending balance	-14,791	-2,721	1,107
Foreign Currency [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	-4,844	-5	0
Unrealized loss on foreign currency translation adjustments	-10,042	-4,968	-5
Realized loss on foreign currency		129
Accumulated other comprehensive income (loss), ending balance	-14,886	-4,844	-5
Cash flow hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	2,123	1,112	1,463
Amortization of cash flow hedges	-741	-371	-351
Change in fair value of cash flow hedges	-1,287	1,382
Realized loss on foreign currency		0
Accumulated other comprehensive income (loss), ending balance	$95	$2,123	$1,112

Accumulated_Other_Comprehensiv7

Accumulated Other Comprehensive Income of the Operating Partnership - Reclassification out of AOCI (Detail) (Tanger Properties Limited Partnership [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from accumulated other comprehensive income	($741)	($242)	($351)
Interest Expense [Member] \| Cash flow hedges [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from accumulated other comprehensive income	-741	-371	-351
Interest Expense [Member] \| Foreign Currency [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from accumulated other comprehensive income	$0	$129	$0

Supplementary_Income_Statement2

Supplementary Income Statement Information (Details) (Tanger Factory Outlet Centers, Inc [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Tanger Factory Outlet Centers, Inc [Member]
Supplementary Income Statement Information [Line Items]
Advertising and promotion	$25,431	$24,035	$23,051
Common area maintenance	65,980	57,693	53,179
Real estate taxes	25,644	21,976	19,842
Other operating expenses	20,367	17,342	15,088
Operating Costs and Expenses	$137,422	$121,046	$111,160

Lease_Agreements_Details

Lease Agreements (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified	Dec. 31, 2014
Operating Leases, Future Minimum Payments Receivable [Line Items]
2015	$243,870
2016	219,461
2017	190,130
2018	156,436
2019	119,864
Thereafter	359,049
Future lease payment receivables	$1,288,810
Consolidated Properties [Member]
Operating Leases, Future Minimum Payments Receivable [Line Items]
Number of stores	2,400
Number of Outlet Centers	36

Commitments_and_Contingencies_1

Commitments and Contingencies (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified	Dec. 31, 2014
Other Commitments [Line Items]
2015	$5,807
2016	5,871
2017	5,590
2018	5,567
2019	5,734
Thereafter	301,040
Operating leases, future minimum payments due	$329,609

Commitments_and_Contingencies_2

Commitments and Contingencies - Narrative (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Loss Contingencies [Line Items]
Operating Leases, Rent Expense	$6	$5.80	$5.80
Purchase commitments to complete construction	80.3
Partnership Interest [Member]
Loss Contingencies [Line Items]
Purchase commitments to complete construction	$33.50

Subsequent_Events_Details

Subsequent Events (Details) (USD $)	1 Months Ended
In Millions, unless otherwise specified	Jan. 31, 2015	Dec. 31, 2014
	mi	sqft
	sqft
Subsequent Event [Line Items]
Square Feet		982,000
Southhaven [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Purchase price of land	$14.80
Square Feet	310,000
Number of miles from major city	5

Quarterly_Financial_Data_of_th2

Quarterly Financial Data of the Company (Unaudited) (Details) (Tanger Factory Outlet Centers, Inc [Member], USD $)	3 Months Ended																12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Tanger Factory Outlet Centers, Inc [Member]
Entity Information [Line Items]
Total revenues	$108,374	[1],[2]	$105,189	[1]	$102,212	[1]	$102,783	[1]	$107,325	[1]	$97,804	[1],[3]	$91,002	[1]	$88,688	[1]	$418,558	$384,819	$357,002
Operating income	35,587	[1],[2]	35,283	[1]	32,625	[1]	28,368	[1]	35,916	[1]	33,431	[1],[3]	29,843	[1]	28,515	[1]	131,863	127,705	109,590
Net income	18,520	[1],[2]	24,297	[1]	19,895	[1]	15,440	[1]	23,136	[1]	56,180	[1],[3]	17,776	[1]	16,229	[1]	78,152	113,321	56,476
Net income attributable to Tanger Factory Outlet Centers, Inc.	17,542	[1],[2]	23,003	[1]	18,850	[1]	14,616	[1]	21,936	[1]	53,294	[1],[3]	16,888	[1]	15,439	[1]	74,011	107,557	53,228
Income available to common shareholders of Tanger Factory Outlet Centers, Inc.	$17,061	[1],[2]	$22,522	[1]	$18,369	[1]	$14,187	[1]	$21,706	[1]	$52,685	[1],[3]	$16,657	[1]	$15,245	[1]	$72,139	$106,431	$52,444
Basic earnings per common share
Net income (in dollars per share)	$0.18	[1],[2]	$0.24	[1]	$0.20	[1]	$0.15	[1]	$0.23	[1]	$0.56	[1],[3]	$0.18	[1]	$0.16	[1]	$0.77	$1.14	$0.57
Diluted earnings per common share
Net income (in dollars per share)	$0.18	[1],[2]	$0.24	[1]	$0.20	[1]	$0.15	[1]	$0.23	[1]	$0.56	[1],[3]	$0.18	[1]	$0.16	[1]	$0.77	$1.13	$0.57

[1]	Quarterly amounts may not add to annual amounts due to the effect of rounding on a quarterly basis.
[2]	For the fourth quarter, net income includes a $7.5 million gain on the sale of our Lincoln City outlet center and a $13.1 million loss on early extinguishment of debt related to the early redemption of senior notes due November 2015.
[3]	For the third quarter, net income includes a $26.0 million gain on our previously held interest in Deer Park upon the acquisition of an additional one-third interest in August 2013, and the consolidation of Deer Park into our financial statements.

Quarterly_Financial_Data_of_th3

Quarterly Financial Data of the Company (Unaudited) - Narrative (Details) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Gain on sale of real estate			$7,513
Tanger Factory Outlet Centers, Inc [Member]
Debt Instrument [Line Items]
Gain on sale of real estate	7,500		7,513	0	0
Loss on early extinguishment of debt	13,100		-13,140	0	0
Gain on previously held interest in acquired joint venture		$26,000	$0	$26,002	$0

Schedule_III_Real_Estate_and_A

Schedule III - Real Estate and Accumulated Depreciation (Details) (USD $)	12 Months Ended
	Dec. 31, 2014
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$271,361,000
Initial cost to Company, Land	208,323,000
Initial cost to Company, Buildings, Improvements & Fixtures	1,381,330,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	15,557,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	751,945,000
Gross Amount Carried at Close of Period, Land	223,880,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	2,133,275,000
Total	2,357,155,000
Accumulated Depreciation	712,255,000
Real estate, Federal income tax basis	2,400,000,000
Buildings and improvements, estimated useful life	33 years
Land improvements, estimated useful life	15 years
Atlantic City [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	49,691,000
Initial cost to Company, Land	0
Initial cost to Company, Buildings, Improvements & Fixtures	125,988,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	3,142,000
Gross Amount Carried at Close of Period, Land	0
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	129,130,000
Total	129,130,000
Accumulated Depreciation	16,019,000
Barstow [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	3,281,000
Initial cost to Company, Buildings, Improvements & Fixtures	12,533,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	21,831,000
Gross Amount Carried at Close of Period, Land	3,281,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	34,364,000
Total	37,645,000
Accumulated Depreciation	18,948,000
Blowing Rock [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	1,963,000
Initial cost to Company, Buildings, Improvements & Fixtures	9,424,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	8,116,000
Gross Amount Carried at Close of Period, Land	1,963,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	17,540,000
Total	19,503,000
Accumulated Depreciation	8,287,000
Branson [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	4,407,000
Initial cost to Company, Buildings, Improvements & Fixtures	25,040,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	396,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	20,774,000
Gross Amount Carried at Close of Period, Land	4,803,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	45,814,000
Total	50,617,000
Accumulated Depreciation	25,996,000
Charleston [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	10,353,000
Initial cost to Company, Buildings, Improvements & Fixtures	48,877,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	12,532,000
Gross Amount Carried at Close of Period, Land	10,353,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	61,409,000
Total	71,762,000
Accumulated Depreciation	21,405,000
Commerce II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	1,262,000
Initial cost to Company, Buildings, Improvements & Fixtures	14,046,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	707,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	33,474,000
Gross Amount Carried at Close of Period, Land	1,969,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	47,520,000
Total	49,489,000
Accumulated Depreciation	27,230,000
Deer Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	148,839,000
Initial cost to Company, Land	82,413,000
Initial cost to Company, Buildings, Improvements & Fixtures	173,044,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	2,534,000
Gross Amount Carried at Close of Period, Land	82,413,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	175,578,000
Total	257,991,000
Accumulated Depreciation	9,925,000
Foley [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	4,400,000
Initial cost to Company, Buildings, Improvements & Fixtures	82,410,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	693,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	40,769,000
Gross Amount Carried at Close of Period, Land	5,093,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	123,179,000
Total	128,272,000
Accumulated Depreciation	42,731,000
Foxwoods [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	25,235,000
Initial cost to Company, Land	0
Initial cost to Company, Buildings, Improvements & Fixtures	9,371,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	67,727,000
Gross Amount Carried at Close of Period, Land	0
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	77,098,000
Total	77,098,000
Accumulated Depreciation	0
Gonzales [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	679,000
Initial cost to Company, Buildings, Improvements & Fixtures	15,895,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	35,438,000
Gross Amount Carried at Close of Period, Land	679,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	51,333,000
Total	52,012,000
Accumulated Depreciation	25,757,000
Grand Rapids [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	0
Initial cost to Company, Buildings, Improvements & Fixtures	21,119,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	0
Gross Amount Carried at Close of Period, Land	0
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	21,119,000
Total	21,119,000
Accumulated Depreciation	0
Hershey [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	29,670,000
Initial cost to Company, Land	3,673,000
Initial cost to Company, Buildings, Improvements & Fixtures	48,186,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	2,144,000
Gross Amount Carried at Close of Period, Land	3,673,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	50,330,000
Total	54,003,000
Accumulated Depreciation	6,903,000
Hilton Head I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	4,753,000
Initial cost to Company, Buildings, Improvements & Fixtures	0
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	32,959,000
Gross Amount Carried at Close of Period, Land	4,753,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	32,959,000
Total	37,712,000
Accumulated Depreciation	7,155,000
Hilton Head II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	5,128,000
Initial cost to Company, Buildings, Improvements & Fixtures	20,668,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	9,303,000
Gross Amount Carried at Close of Period, Land	5,128,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	29,971,000
Total	35,099,000
Accumulated Depreciation	11,611,000
Howell [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	2,250,000
Initial cost to Company, Buildings, Improvements & Fixtures	35,250,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	11,306,000
Gross Amount Carried at Close of Period, Land	2,250,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	46,556,000
Total	48,806,000
Accumulated Depreciation	18,526,000
Jeffersonville [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	2,752,000
Initial cost to Company, Buildings, Improvements & Fixtures	111,276,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	6,241,000
Gross Amount Carried at Close of Period, Land	2,752,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	117,517,000
Total	120,269,000
Accumulated Depreciation	14,170,000
Kittery I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	1,242,000
Initial cost to Company, Buildings, Improvements & Fixtures	2,961,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	229,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	2,380,000
Gross Amount Carried at Close of Period, Land	1,471,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	5,341,000
Total	6,812,000
Accumulated Depreciation	4,452,000
Kittery II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	1,451,000
Initial cost to Company, Buildings, Improvements & Fixtures	1,835,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	874,000
Gross Amount Carried at Close of Period, Land	1,451,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	2,709,000
Total	4,160,000
Accumulated Depreciation	2,354,000
Lancaster [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	3,691,000
Initial cost to Company, Buildings, Improvements & Fixtures	19,907,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	17,534,000
Gross Amount Carried at Close of Period, Land	3,691,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	37,441,000
Total	41,132,000
Accumulated Depreciation	24,256,000
Locust Grove [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	2,558,000
Initial cost to Company, Buildings, Improvements & Fixtures	11,801,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	26,837,000
Gross Amount Carried at Close of Period, Land	2,558,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	38,638,000
Total	41,196,000
Accumulated Depreciation	22,279,000
Mebane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	8,821,000
Initial cost to Company, Buildings, Improvements & Fixtures	53,362,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	1,286,000
Gross Amount Carried at Close of Period, Land	8,821,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	54,648,000
Total	63,469,000
Accumulated Depreciation	14,046,000
Mytrle Beach Hwy 17 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	0
Initial cost to Company, Buildings, Improvements & Fixtures	80,733,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	5,968,000
Gross Amount Carried at Close of Period, Land	0
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	86,701,000
Total	86,701,000
Accumulated Depreciation	20,728,000
Myrtle Beach Hwy 501 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	10,236,000
Initial cost to Company, Buildings, Improvements & Fixtures	57,094,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	36,438,000
Gross Amount Carried at Close of Period, Land	10,236,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	93,532,000
Total	103,768,000
Accumulated Depreciation	31,510,000
Nags Head [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	1,853,000
Initial cost to Company, Buildings, Improvements & Fixtures	6,679,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	5,212,000
Gross Amount Carried at Close of Period, Land	1,853,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	11,891,000
Total	13,744,000
Accumulated Depreciation	7,107,000
Ocean City [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	17,926,000
Initial cost to Company, Land	0
Initial cost to Company, Buildings, Improvements & Fixtures	16,334,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	7,822,000
Gross Amount Carried at Close of Period, Land	0
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	24,156,000
Total	24,156,000
Accumulated Depreciation	3,788,000
Park City [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	6,900,000
Initial cost to Company, Buildings, Improvements & Fixtures	33,597,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	343,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	25,592,000
Gross Amount Carried at Close of Period, Land	7,243,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	59,189,000
Total	66,432,000
Accumulated Depreciation	19,135,000
Pittsburgh [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	5,528,000
Initial cost to Company, Buildings, Improvements & Fixtures	91,288,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	3,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	13,385,000
Gross Amount Carried at Close of Period, Land	5,531,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	104,673,000
Total	110,204,000
Accumulated Depreciation	34,884,000
Rehoboth Beach [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	20,600,000
Initial cost to Company, Buildings, Improvements & Fixtures	74,209,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	1,875,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	33,799,000
Gross Amount Carried at Close of Period, Land	22,475,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	108,008,000
Total	130,483,000
Accumulated Depreciation	36,318,000
Riverhead [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	0
Initial cost to Company, Buildings, Improvements & Fixtures	36,374,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	6,152,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	104,446,000
Gross Amount Carried at Close of Period, Land	6,152,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	140,820,000
Total	146,972,000
Accumulated Depreciation	74,904,000
San Marcos [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	1,801,000
Initial cost to Company, Buildings, Improvements & Fixtures	9,440,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	16,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	48,488,000
Gross Amount Carried at Close of Period, Land	1,817,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	57,928,000
Total	59,745,000
Accumulated Depreciation	35,861,000
Sanibel [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	4,916,000
Initial cost to Company, Buildings, Improvements & Fixtures	23,196,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	12,563,000
Gross Amount Carried at Close of Period, Land	4,916,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	35,759,000
Total	40,675,000
Accumulated Depreciation	19,505,000
Sevierville [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	0
Initial cost to Company, Buildings, Improvements & Fixtures	18,495,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	46,766,000
Gross Amount Carried at Close of Period, Land	0
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	65,261,000
Total	65,261,000
Accumulated Depreciation	30,671,000
Seymour [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	200,000
Initial cost to Company, Buildings, Improvements & Fixtures	0
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	0
Gross Amount Carried at Close of Period, Land	200,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	0
Total	200,000
Accumulated Depreciation	0
Terrell [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	523,000
Initial cost to Company, Buildings, Improvements & Fixtures	13,432,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	9,519,000
Gross Amount Carried at Close of Period, Land	523,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	22,951,000
Total	23,474,000
Accumulated Depreciation	16,802,000
Tilton [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	1,800,000
Initial cost to Company, Buildings, Improvements & Fixtures	24,838,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	29,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	10,360,000
Gross Amount Carried at Close of Period, Land	1,829,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	35,198,000
Total	37,027,000
Accumulated Depreciation	13,454,000
Tuscola [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	1,600,000
Initial cost to Company, Buildings, Improvements & Fixtures	15,428,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	43,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	3,697,000
Gross Amount Carried at Close of Period, Land	1,643,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	19,125,000
Total	20,768,000
Accumulated Depreciation	7,477,000
West Branch [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	319,000
Initial cost to Company, Buildings, Improvements & Fixtures	3,428,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	120,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	7,796,000
Gross Amount Carried at Close of Period, Land	439,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	11,224,000
Total	11,663,000
Accumulated Depreciation	6,792,000
Westbrook [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	6,264,000
Initial cost to Company, Buildings, Improvements & Fixtures	26,991,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	4,233,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	5,706,000
Gross Amount Carried at Close of Period, Land	10,497,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	32,697,000
Total	43,194,000
Accumulated Depreciation	12,628,000
Williamsburg [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial cost to Company, Land	706,000
Initial cost to Company, Buildings, Improvements & Fixtures	6,781,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	718,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	17,187,000
Gross Amount Carried at Close of Period, Land	1,424,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	23,968,000
Total	25,392,000
Accumulated Depreciation	$18,641,000

Schedule_III_Reconciliation_of

Schedule III - Reconciliation of Real Estate Property (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance, beginning of year	$2,249,819	$1,947,352	$1,916,045
Acquisitions	0	255,107	0
Improvements	160,560	50,283	34,633
Dispositions and reclasses to rental property held for sale	-146,776	-2,923	-3,326
Balance, end of year	$2,263,603	$2,249,819	$1,947,352

Schedule_III_Reconciliation_of1

Schedule III - Reconciliation of Accumulated Depreciation (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, beginning of year	$654,631	$582,859	$512,485
Depreciation for the period	80,057	74,695	73,700
Dispositions and reclasses to rental property held for sale	-72,452	-2,923	-3,326
Balance, end of year	$662,236	$654,631	$582,859