Tanger (SKT) 10-K 19 Feb 20 2019 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2019	Feb. 07, 2020	Jun. 28, 2019
Entity Information [Line Items]
Entity Registrant Name	TANGER FACTORY OUTLET CENTERS, INC
Entity Central Index Key	0000899715
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2019
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Document Annual Report	true
Document Transition Report	false
Entity File Number	1-11986
Entity Incorporation, State or Country Code	NC
Entity Tax Identification Number	56-1815473
Entity Address, Address Line One	3200 Northline Avenue
Entity Address, Address Line Two	Suite 360
Entity Address, City or Town	Greensboro
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	27408
City Area Code	336
Local Phone Number	292-3010
Title of 12(b) Security	Common Shares, $.01 par value
Trading Symbol	SKT
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 1,489,302,811
Entity Common Stock, Shares Outstanding		92,892,260
Tanger Properties Limited Partnership [Member]
Entity Information [Line Items]
Entity Registrant Name	TANGER PROPERTIES LIMITED PARTNERSHIP
Entity Central Index Key	0001004036
Entity File Number	333-3526-01
Entity Incorporation, State or Country Code	NC
Entity Tax Identification Number	56-1822494
No Trading Symbol Flag	true
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Rental property:
Total rental property, net	$ 100,000
Debt:
Operating lease liabilities	91,237
Tanger Factory Outlet Centers, Inc. [Member]
Rental property:
Land	266,537	$ 278,428
Buildings, improvements and fixtures	2,630,357	2,764,649
Construction in progress	0	3,102
Total rental property, at cost	2,896,894	3,046,179
Accumulated depreciation	(1,009,951)	(981,305)
Total rental property, net	1,886,943	2,064,874
Cash and cash equivalents	16,672	9,083
Investments in unconsolidated joint ventures	94,691	95,969
Deferred lease costs and other intangibles, net	96,712	116,874
Operating lease right-of-use assets	86,575	0
Prepaids and other assets	103,618	98,102
Total assets	2,285,211	2,384,902
Debt:
Senior, unsecured notes, net	1,138,603	1,136,663
Unsecured term loans, net	347,367	346,799
Mortgages payable, net	83,803	87,471
Unsecured lines of credit, net	0	141,985
Total debt	1,569,773	1,712,918
Accounts payable and accrued expenses	79,562	82,676
Operating lease liabilities	91,237	0
Other liabilities	88,530	83,773
Total liabilities	1,829,102	1,879,367
Commitments and contingencies (Note 22)
Tanger Factory Outlet Centers, Inc.:
Common shares, $.01 par value, 300,000,000 shares authorized, 92,892,260 and 93,941,783 shares issued and outstanding at December 31, 2019 and 2018, respectively	929	939
Paid in capital	775,035	778,845
Accumulated distributions in excess of net income	(317,263)	(272,454)
Partners' Equity
Accumulated other comprehensive loss	(25,495)	(27,151)
Equity attributable to Tanger Factory Outlet Centers, Inc.	433,206	480,179
Noncontrolling interests in Operating Partnership	22,903	25,356
Noncontrolling interests in other consolidated partnerships	0	0
Total equity	456,109	505,535
Total liabilities and equity	2,285,211	2,384,902
Tanger Properties Limited Partnership [Member]
Rental property:
Land	266,537	278,428
Buildings, improvements and fixtures	2,630,357	2,764,649
Construction in progress	0	3,102
Total rental property, at cost	2,896,894	3,046,179
Accumulated depreciation	(1,009,951)	(981,305)
Total rental property, net	1,886,943	2,064,874
Cash and cash equivalents	16,519	8,991
Investments in unconsolidated joint ventures	94,691	95,969
Deferred lease costs and other intangibles, net	96,712	116,874
Operating lease right-of-use assets	86,575	0
Prepaids and other assets	103,374	97,832
Total assets	2,284,814	2,384,540
Debt:
Senior, unsecured notes, net	1,138,603	1,136,663
Unsecured term loans, net	347,367	346,799
Mortgages payable, net	83,803	87,471
Unsecured lines of credit, net	0	141,985
Total debt	1,569,773	1,712,918
Accounts payable and accrued expenses	79,165	82,314
Operating lease liabilities	91,237	0
Other liabilities	88,530	83,773
Total liabilities	1,828,705	1,879,005
Commitments and contingencies (Note 22)
Partners' Equity
General partner, 1,000,000 units outstanding at December 31, 2019 and 2018	4,435	4,914
Limited partners, 4,911,173 and 4,960,684 Class A units and 91,892,260 and 92,941,783 Class B units outstanding at December 31, 2019 and 2018, respectively	478,562	529,252
Accumulated other comprehensive loss	(26,888)	(28,631)
Total partners' equity	456,109	505,535
Noncontrolling interests in other consolidated partnerships	0	0
Total equity	456,109	505,535
Total liabilities and equity	$ 2,284,814	$ 2,384,540

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
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	92,942,260	93,941,783
Common shares, outstanding	92,942,260	93,941,783
Tanger Properties Limited Partnership [Member]
General partnership units	1,000,000	1,000,000
Tanger Properties Limited Partnership [Member] | Class A Limited Partnership Units [Member]
Limited partnership units	4,911,173	4,960,684
Tanger Properties Limited Partnership [Member] | Class B Limited Partnership Units [Member]
Limited partnership units	91,892,260	92,941,783

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues:
Rental revenues	$ 463,946,000
Management, leasing and other services	5,419,000	$ 4,995,000	$ 3,664,000
Expenses:
Impairment charges			0
Other income (expense):
Gain on sale of assets	43,422,000
Tanger Factory Outlet Centers, Inc. [Member]
Revenues:
Rental revenues	463,946,000	480,707,000	475,283,000
Management, leasing and other services	5,419,000	4,995,000	3,664,000
Other revenues	8,983,000	8,979,000	9,287,000
Total revenues	478,348,000	494,681,000	488,234,000
Expenses:
Property operating	157,734,000	160,457,000	155,235,000
General and administrative	53,790,000	44,167,000	44,004,000
Abandoned pre-development costs	0	0	528,000
Impairment charges	37,610,000	49,739,000	0
Depreciation and amortization	123,314,000	131,722,000	127,744,000
Total expenses	372,448,000	386,085,000	327,511,000
Other income (expense):
Interest expense	(61,672,000)	(64,821,000)	(64,825,000)
Loss on early extinguishment of debt	0	0	(35,626,000)
Gain on sale of assets	43,422,000	0	6,943,000
Other non-operating income (expense)	(2,761,000)	864,000	2,724,000
Total other income (expense)	(21,011,000)	(63,957,000)	(90,784,000)
Income before equity in earnings of unconsolidated joint ventures	84,889,000	44,639,000	69,939,000
Equity in earnings of unconsolidated joint ventures	7,839,000	924,000	1,937,000
Net income	92,728,000	45,563,000	71,876,000
Noncontrolling interests in Operating Partnership	(4,678,000)	(2,329,000)	(3,609,000)
Noncontrolling interests in other consolidated partnerships	(195,000)	421,000	(265,000)
Net income attributable to Tanger Factory Outlet Centers, Inc.	$ 87,855,000	$ 43,655,000	$ 68,002,000
Basic earnings per common share:
Net income (in dollars per share)	$ 0.93	$ 0.45	$ 0.71
Diluted earnings per common share:
Net income (in dollars per share)	$ 0.93	$ 0.45	$ 0.71
Tanger Properties Limited Partnership [Member]
Revenues:
Rental revenues	$ 463,946,000	$ 480,707,000	$ 475,283,000
Management, leasing and other services	5,419,000	4,995,000	3,664,000
Other revenues	8,983,000	8,979,000	9,287,000
Total revenues	478,348,000	494,681,000	488,234,000
Expenses:
Property operating	157,734,000	160,457,000	155,235,000
General and administrative	53,790,000	44,167,000	44,004,000
Abandoned pre-development costs	0	0	528,000
Impairment charges	37,610,000	49,739,000	0
Depreciation and amortization	123,314,000	131,722,000	127,744,000
Total expenses	372,448,000	386,085,000	327,511,000
Other income (expense):
Interest expense	(61,672,000)	(64,821,000)	(64,825,000)
Loss on early extinguishment of debt	0	0	(35,626,000)
Gain on sale of assets	43,422,000	0	6,943,000
Other non-operating income (expense)	(2,761,000)	864,000	2,724,000
Total other income (expense)	(21,011,000)	(63,957,000)	(90,784,000)
Income before equity in earnings of unconsolidated joint ventures	84,889,000	44,639,000	69,939,000
Equity in earnings of unconsolidated joint ventures	7,839,000	924,000	1,937,000
Net income	92,728,000	45,563,000	71,876,000
Noncontrolling interests in consolidated partnerships	(195,000)	421,000	(265,000)
Net income attributable to Tanger Factory Outlet Centers, Inc.	92,533,000	45,984,000	71,611,000
Net income available to limited partners	91,597,000	45,522,000	70,900,000
Net income available to general partner	$ 936,000	$ 462,000	$ 711,000
Basic earnings per common share:
Net income (in dollars per share)	$ 0.93	$ 0.45	$ 0.71
Diluted earnings per common share:
Net income (in dollars per share)	$ 0.93	$ 0.45	$ 0.71

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Tanger Factory Outlet Centers, Inc. [Member]
Net income	$ 92,728	$ 45,563	$ 71,876
Other comprehensive income (loss):
Foreign currency translation adjustments	7,917	(8,691)	8,138
Change in fair value of cash flow hedges	(6,174)	405	1,351
Other comprehensive income (loss)	1,743	(8,286)	9,489
Comprehensive income	94,471	37,277	81,365
Comprehensive income attributable to noncontrolling interests	(4,960)	(1,488)	(4,353)
Comprehensive income attributable to Tanger Factory Outlet Centers, Inc.	89,511	35,789	77,012
Tanger Properties Limited Partnership [Member]
Net income	92,728	45,563	71,876
Other comprehensive income (loss):
Foreign currency translation adjustments	7,917	(8,691)	8,138
Change in fair value of cash flow hedges	(6,174)	405	1,351
Other comprehensive income (loss)	1,743	(8,286)	9,489
Comprehensive income	94,471	37,277	81,365
Comprehensive income attributable to noncontrolling interests	(195)	421	(265)
Comprehensive income attributable to Tanger Factory Outlet Centers, Inc.	$ 94,276	$ 37,698	$ 81,100

CONSOLIDATED STATEMENT OF SHARE

CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Tanger Factory Outlet Centers, Inc. [Member]	Tanger Factory Outlet Centers, Inc. [Member]Common shares [Member]	Tanger Factory Outlet Centers, Inc. [Member]Paid in capital [Member]	Tanger Factory Outlet Centers, Inc. [Member]Accumulated distributions in excess of earnings [Member]	Tanger Factory Outlet Centers, Inc. [Member]Accumulated other comprehensive loss [Member]	Tanger Factory Outlet Centers, Inc. [Member]Total shareholders'/partners equity [Member]	Tanger Factory Outlet Centers, Inc. [Member]Noncontrolling interests [Member]Limited partners [Member]	Tanger Factory Outlet Centers, Inc. [Member]Noncontrolling interests [Member]Other Ownership Interest [Member]	Tanger Properties Limited Partnership [Member]	Tanger Properties Limited Partnership [Member]Accumulated other comprehensive loss [Member]	Tanger Properties Limited Partnership [Member]Total shareholders'/partners equity [Member]	Tanger Properties Limited Partnership [Member]Noncontrolling interests [Member]	Tanger Properties Limited Partnership [Member]General partner [Member]	Tanger Properties Limited Partnership [Member]Limited partners [Member]
Beginning balance at Dec. 31, 2016	$ 705,441	$ 961	$ 820,251	$ (122,701)	$ (28,295)	$ 670,216	$ 35,066	$ 159
Balance, partners' capital, including portion attributable to noncontrolling interest at Dec. 31, 2016									$ 705,441	$ (29,834)	$ 705,282	$ 159	$ 6,485	$ 728,631
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	71,876			68,002		68,002	3,609	265	71,876		71,611	265	711	70,900
Other comprehensive income (loss)	9,489				9,010	9,010	479		9,489	9,489	9,489
Compensation under Incentive Award Plan	14,629		14,629			14,629			14,629		14,629			14,629
Issuance of common shares upon exercise of options	54		54			54
Issuance of common units upon exercise of options									54		54			54
Grant of restricted common shares awards, net of forfeitures		4	(4)
Repurchase of common shares, including transaction costs	(49,361)	(18)	(49,343)			(49,361)			(49,361)		(49,361)			(49,361)
Withholding of common shares/units for employee income taxes	(2,436)	(1)	(2,435)			(2,436)			(2,436)		(2,436)			(2,436)
Contributions from noncontrolling interests	13							13	13			13
Adjustment for noncontrolling interest in Operating Partnership			1,630			1,630	(1,630)
Acquisition of noncontrolling interest in other consolidated partnership	(159)							(159)	(159)			(159)
Common distributions									(136,966)		(136,966)		(1,352)	(135,614)
Common dividends	(130,166)			(130,166)		(130,166)
Distributions to noncontrolling interests	(7,078)						(6,800)	(278)	(278)			(278)
Ending balance at Dec. 31, 2017	612,302	946	784,782	(184,865)	(19,285)	581,578	30,724
Balance, partners' capital, including portion attributable to noncontrolling interest at Dec. 31, 2017									612,302	(20,345)	612,302		5,844	626,803
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	45,563			43,655		43,655	2,329	(421)	45,563		45,984	(421)	462	45,522
Other comprehensive income (loss)	(8,286)				(7,866)	(7,866)	(420)		(8,286)	(8,286)	(8,286)
Compensation under Incentive Award Plan	15,800		15,800			15,800			15,800		15,800			15,800
Grant of restricted common shares awards, net of forfeitures		3	(3)
Repurchase of common shares, including transaction costs	(19,998)	(9)	(19,989)			(19,998)			(19,998)		(19,998)			(19,998)
Withholding of common shares/units for employee income taxes	(2,068)	(1)	(2,067)			(2,068)			(2,068)		(2,068)			(2,068)
Contributions from noncontrolling interests	626							626	626			626
Adjustment for noncontrolling interest in Operating Partnership			322			322	(322)
Common distributions									(138,199)		(138,199)		(1,392)	(136,807)
Common dividends	(131,244)			(131,244)		(131,244)
Distributions to noncontrolling interests	(7,160)						(6,955)	(205)	(205)			(205)
Ending balance at Dec. 31, 2018	505,535	939	778,845	(272,454)	(27,151)	480,179	25,356	0
Balance, partners' capital, including portion attributable to noncontrolling interest at Dec. 31, 2018									505,535	(28,631)	505,535	0	4,914	529,252
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	92,728			87,855		87,855	4,678	195	92,728		92,533	195	936	91,597
Other comprehensive income (loss)	1,743				1,656	1,656	87		1,743	1,743	1,743
Compensation under Incentive Award Plan	18,504		18,504			18,504			18,504		18,504			18,504
Grant of restricted common shares awards, net of forfeitures		3	(3)
Repurchase of common shares, including transaction costs	(20,000)	(12)	(19,988)			(20,000)			(20,000)		(20,000)			(20,000)
Withholding of common shares/units for employee income taxes	(2,524)	(1)	(2,523)			(2,524)			(2,524)		(2,524)			(2,524)
Contributions from noncontrolling interests	47							47	47			47
Adjustment for noncontrolling interest in Operating Partnership			200			200	(200)
Common distributions									(139,682)		(139,682)		(1,415)	(138,267)
Common dividends	(132,664)			(132,664)		(132,664)
Distributions to noncontrolling interests	(7,260)						(7,018)	(242)	(242)			(242)
Ending balance at Dec. 31, 2019	$ 456,109	$ 929	$ 775,035	$ (317,263)	$ (25,495)	$ 433,206	$ 22,903	$ 0
Balance, partners' capital, including portion attributable to noncontrolling interest at Dec. 31, 2019									$ 456,109	$ (26,888)	$ 456,109	$ 0	$ 4,435	$ 478,562

CONSOLIDATED STATEMENT OF SHA_2

CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Tanger Factory Outlet Centers, Inc. [Member]
Shares/Units issued upon exercise of options (in shares)	0	0	1,800
Grant of restricted common shares awards, net of forfeitures (in shares)	242,167	355,184	411,968
Repurchase of shares (in shares)	1,209,328	919,249	1,911,585
Shares paid for tax withholding for share based compensation (in shares)	131,873	89,437	69,886
Exchange of Operating Partnership units for common shares (in units)	49,511	34,749	32,348
Common shares issued in exchange for Operating Partnership units (in shares)	49,511	34,749	32,348
Dividends declared per common share (in dollars per share)	$ 1.415	$ 1.3925	$ 1.3525
Tanger Properties Limited Partnership [Member]
Distributions Per Limited Partnership Unit Outstanding, Basic	$ 1.415	$ 1.3925	$ 1.353
Shares/Units issued upon exercise of options (in shares)	0	0	1,800
Grant of restricted common shares awards, net of forfeitures (in shares)	242,167	355,184	411,968
Repurchase of shares (in shares)	1,209,328	919,249	1,911,585
Shares paid for tax withholding for share based compensation (in shares)	131,873	89,437	69,886

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended				12 Months Ended			24 Months Ended
	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019
Adjustments to reconcile net income to net cash provided by operating activities:
Impairment charges							$ 0
Gain on sale of assets					$ (43,422,000)
Investing Activities
Net proceeds on sale of assets					128,505,000
Tanger Factory Outlet Centers, Inc. [Member]
Operating Activities
Net income	$ (12,379,000)	$ 65,841,000	$ 20,619,000	$ 23,685,000	92,728,000	$ 45,563,000	71,876,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization					123,314,000	131,722,000	127,744,000
Impairment charges					37,610,000	49,739,000	0
Amortization of deferred financing costs					3,004,000	3,058,000	3,263,000
Gain on sale of assets					(43,422,000)	0	(6,943,000)
Loss on early extinguishment of debt					0	0	35,626,000
Equity in earnings of unconsolidated joint ventures					(7,839,000)	(924,000)	(1,937,000)
Equity-based compensation expense					18,120,000	14,669,000	13,585,000
Amortization of debt (premiums) and discounts, net					448,000	416,000	462,000
Amortization (accretion) of market rent rate adjustments, net					1,432,000	2,577,000	2,829,000
Straight-line rent adjustments					(7,721,000)	(5,844,000)	(5,632,000)
Distributions of cumulative earnings from unconsolidated joint ventures					7,587,000	7,941,000	10,697,000
Other non-cash					3,638,000	0	0
Changes in other asset and liabilities:
Other assets					(4,159,000)	2,079,000	365,000
Accounts payable and accrued expenses					(4,288,000)	7,322,000	1,224,000
Net cash provided by operating activities					220,452,000	258,318,000	253,159,000
Investing Activities
Additions to rental property					(47,884,000)	(64,253,000)	(166,231,000)
Additions to investments in unconsolidated joint ventures					(2,316,000)	(1,916,000)	(5,892,000)
Net proceeds on sale of assets					128,505,000	0	39,213,000
Distributions in excess of cumulative earnings from unconsolidated joint ventures					17,819,000	25,232,000	25,084,000
Additions to non-real estate assets					(1,155,000)	(1,330,000)	(8,909,000)
Additions to deferred lease costs					(5,142,000)	(6,703,000)	(6,584,000)
Other investing activities					9,462,000	8,947,000	5,774,000
Net cash provided by (used in) investing activities					99,289,000	(40,023,000)	(117,545,000)
Financing Activities
Cash dividends paid					(132,664,000)	(131,244,000)	(130,166,000)
Distributions to noncontrolling interests in Operating Partnership					(7,018,000)	(6,955,000)	(6,800,000)
Proceeds from revolving credit facility					282,870,000	491,900,000	719,521,000
Repayments of revolving credit facility					(427,970,000)	(554,900,000)	(572,421,000)
Proceeds from notes, mortgages and loans					0	25,000,000	299,460,000
Repayments of notes, mortgages and loans					(3,369,000)	(11,783,000)	(373,258,000)
Payment of make-whole premium related to early extinguishment of debt					0	0	(34,143,000)
Repurchase of common shares, including transaction costs					(20,000,000)	(19,998,000)	(49,361,000)
Employee income taxes paid related to shares withheld upon vesting of equity awards					(2,524,000)	(2,068,000)	(2,436,000)
Additions to deferred financing costs					(115,000)	(4,428,000)	(2,850,000)
Proceeds from exercise of options					0	0	54,000
Proceeds from other financing activities					47,000	626,000	12,054,000
Payment for other financing activities					(1,390,000)	(1,353,000)	(1,333,000)
Net cash provided (used in) by financing activities					(312,133,000)	(215,203,000)	(141,679,000)
Effect of foreign currency rate changes on cash and cash equivalents					(19,000)	(110,000)	(56,000)
Net increase (decrease) in cash, cash equivalents and restricted cash					7,589,000	2,982,000	(6,121,000)
Cash and cash equivalents, beginning of year		9,083,000		6,101,000	9,083,000	6,101,000	12,222,000	$ 6,101,000
Cash and cash equivalents, end of year	16,672,000		9,083,000		16,672,000	9,083,000	6,101,000	16,672,000
Tanger Properties Limited Partnership [Member]
Operating Activities
Net income					92,728,000	45,563,000	71,876,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization					123,314,000	131,722,000	127,744,000
Impairment charges					37,610,000	49,739,000	0
Amortization of deferred financing costs					3,004,000	3,058,000	3,263,000
Gain on sale of assets					(43,422,000)	0	(6,943,000)
Loss on early extinguishment of debt					0	0	35,626,000
Equity in earnings of unconsolidated joint ventures					(7,839,000)	(924,000)	(1,937,000)
Equity-based compensation expense					18,120,000	14,669,000	13,585,000
Amortization of debt (premiums) and discounts, net					448,000	416,000	462,000
Amortization (accretion) of market rent rate adjustments, net					1,432,000	2,577,000	2,829,000
Straight-line rent adjustments					(7,721,000)	(5,844,000)	(5,632,000)
Distributions of cumulative earnings from unconsolidated joint ventures					7,587,000	7,941,000	10,697,000
Other non-cash					3,638,000	0	0
Changes in other asset and liabilities:
Other assets					(4,185,000)	1,729,000	481,000
Accounts payable and accrued expenses					(4,323,000)	7,631,000	1,080,000
Net cash provided by operating activities					220,391,000	258,277,000	253,131,000
Investing Activities
Additions to rental property					(47,884,000)	(64,253,000)	(166,231,000)
Additions to investments in unconsolidated joint ventures					(2,316,000)	(1,916,000)	(5,892,000)
Net proceeds on sale of assets					128,505,000	0	39,213,000
Distributions in excess of cumulative earnings from unconsolidated joint ventures					17,819,000	25,232,000	25,084,000
Additions to non-real estate assets					(1,155,000)	(1,330,000)	(8,909,000)
Additions to deferred lease costs					(5,142,000)	(6,703,000)	(6,584,000)
Other investing activities					9,462,000	8,947,000	5,774,000
Net cash provided by (used in) investing activities					99,289,000	(40,023,000)	(117,545,000)
Financing Activities
Cash dividends paid					(139,682,000)	(138,199,000)	(136,966,000)
Proceeds from revolving credit facility					282,870,000	491,900,000	719,521,000
Repayments of revolving credit facility					(427,970,000)	(554,900,000)	(572,421,000)
Proceeds from notes, mortgages and loans					0	25,000,000	299,460,000
Repayments of notes, mortgages and loans					(3,369,000)	(11,783,000)	(373,258,000)
Payment of make-whole premium related to early extinguishment of debt					0	0	(34,143,000)
Repurchase of common shares, including transaction costs					(20,000,000)	(19,998,000)	(49,361,000)
Employee income taxes paid related to shares withheld upon vesting of equity awards					(2,524,000)	(2,068,000)	(2,436,000)
Additions to deferred financing costs					(115,000)	(4,428,000)	(2,850,000)
Proceeds from exercise of options					0	0	54,000
Proceeds from other financing activities					47,000	626,000	12,054,000
Payment for other financing activities					(1,390,000)	(1,353,000)	(1,333,000)
Net cash provided (used in) by financing activities					(312,133,000)	(215,203,000)	(141,679,000)
Effect of foreign currency rate changes on cash and cash equivalents					(19,000)	(110,000)	(56,000)
Net increase (decrease) in cash, cash equivalents and restricted cash					7,528,000	2,941,000	(6,149,000)
Cash and cash equivalents, beginning of year		$ 8,991,000		$ 6,050,000	8,991,000	6,050,000	12,199,000	6,050,000
Cash and cash equivalents, end of year	$ 16,519,000		$ 8,991,000		$ 16,519,000	$ 8,991,000	$ 6,050,000	$ 16,519,000

Organization of the Company

Organization of the Company	12 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization of the Company	Organization of the Company Tanger Factory Outlet Centers, Inc. and subsidiaries, which we refer to as the Company, 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 Tanger Properties Limited Partnership and subsidiaries, which we refer to as the Operating Partnership, focuses exclusively on developing, acquiring, owning, operating and managing outlet shopping centers. As of December 31, 2019 , we owned and operated 32 consolidated outlet centers, with a total gross leasable area of approximately 12.0 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 97% occupied and contained over 2,400 stores, representing approximately 400 store brands. We also had partial ownership interests in 7 unconsolidated outlet centers totaling approximately 2.2 million square feet, including 3 outlet centers in Canada. Our outlet centers and other assets are held by, and all of our operations are conducted by the Operating Partnership. 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, 2019 , the Company, through its ownership of Tanger GP Trust and Tanger LP Trust, owned 92,892,260 units of the Operating Partnership and other limited partners (the "Non-Company LPs") collectively owned 4,911,173 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 Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Reclassifications- Certain prior period balances in the accompanying consolidated statements of operations have been reclassified or combined to conform to the current period presentation. See Note 6 and Note 21 for additional details on the amounts reclassified. 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. The Company currently consolidates the Operating Partnership because it has (1) the power to direct the activities of the Operating Partnership that most significantly impact the Operating Partnership’s economic performance and (2) the obligation to absorb losses and the right to receive the residual returns of the Operating Partnership that could be potentially significant. We consolidate properties that are wholly-owned or properties where we own less than 100% but control such properties. Control is determined using an evaluation based on accounting standards related to the consolidation of voting interest entities and variable interest entities ("VIE"). For joint ventures that are determined to be a VIE, we consolidate the entity where we are deemed to be the primary beneficiary. Determination of the primary beneficiary is based on whether an entity has (1) the power to direct the activities of the VIE that most significantly impact the entity's economic performance, and (2) 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. Our determination of the primary beneficiary considers various factors including the form of our ownership interest, our representation in an entity's governance, the size of our investment, our ability to participate in policy making decisions and the rights of the other investors to participate in the decision making process to replace us as manager and or liquidate the venture, if applicable. As of December 31, 2019, we did not have a joint venture that was a VIE. Investments in real estate joint ventures that we do not control but may exercise significant influence on are accounted for using the equity method of accounting. These investments are recorded initially at cost and subsequently adjusted for our equity in the venture's net income or loss, cash contributions, distributions and other adjustments required under the equity method of accounting. For certain of these investments, we record our equity in the venture's net income or loss under the hypothetical liquidation at book value (“HLBV”) method of accounting due to the structures and the preferences we receive on the distributions from our joint ventures pursuant to the respective joint venture agreements for those joint ventures. Under this method, we recognize income and loss in each period based on the change in liquidation proceeds we would receive from a hypothetical liquidation of our investment based on depreciated book value. Therefore, income or loss may be allocated disproportionately as compared to the ownership percentages due to specified preferred return rate thresholds and may be more or less than actual cash distributions received and more or less than what we may receive in the event of an actual liquidation. In the event a basis difference is created between our underlying interest in the venture’s net assets and our initial investment, we amortize such amount over the estimated life of the venture as a component of equity in earnings of unconsolidated joint ventures. The carrying amount of our investments in the Charlotte, Columbus, Galveston/Houston and National Harbor joint ventures are less than zero because of financing or operating distributions that were greater than net income, as net income includes non-cash charges for depreciation and amortization. Noncontrolling interests - In the Company's consolidated financial statements, the “Noncontrolling interests in Operating Partnership” reflects the Non-Company LP's percentage ownership of the Operating Partnership's units. "Noncontrolling interests in other consolidated partnerships" consist of outside equity interests in partnerships or joint ventures 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 or losses are allocated to the noncontrolling interests based on the allocation provisions within the partnership or joint venture agreements. 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, as well as 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 expensed when the project is no longer probable and, if significant, are recorded as abandoned pre-development costs in the consolidated statement of operations. We also capitalize other costs incurred for the construction and development of properties, including interest, real estate taxes and payroll 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 payroll and related costs capitalized for the construction and development of properties 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 for qualifying development activities until placed in service. Payroll and related costs and interest costs capitalized for the years ended December 31, 2019 , 2018 and 2017 were as follows (in thousands): 2019 2018 2017 Payroll and related costs capitalized $ 1,581 $ 1,521 $ 2,345 Interest costs capitalized $ 25 $ 93 $ 2,289 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, 2019 , 2018 and 2017 was as follows (in thousands): 2019 2018 2017 Depreciation expense related to rental property $ 107,129 $ 114,198 $ 107,845 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 are 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. Cash, Cash Equivalents and Restricted Cash - 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. Deferred Charges - Deferred charges include 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 internal leasing costs for the years ended December 31, 2019 , 2018 and 2017 were as follows (in thousands): 2019 2018 2017 Deferred lease costs capitalized- payroll and related costs $ 679 $ 6,007 $ 6,098 Total deferred lease costs capitalized $ 5,142 $ 6,703 $ 6,584 Due to the adoption of Accounting Standards Codification Topic 842 "Leases" ("ASC 842") on January 1, 2019, only direct internal leasing costs are capitalized and indirect internal leasing costs previously capitalized are now expensed. 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 - 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 than such carrying amount, recognize an impairment loss in an amount by which the carrying amount exceeds its fair value. The cash flow estimates used both for determining recoverability and estimating fair value are inherently judgmental and reflect current and projected trends in rental, occupancy, capitalization, and discount rates, and estimated holding periods for the applicable assets. The estimated fair value is based primarily on the income approach. The income approach involves discounting the estimated income stream and reversion (presumed sale) value of a property over an estimated holding period to a present value at a risk-adjusted rate. Discount rates and terminal capitalization rates utilized in this approach are derived from property-specific information, market transactions and other financial and industry data. During the fourth quarter of 2019 and third quarter 2018, we recorded a $37.6 million and $49.7 million , respectively, impairment charge in our consolidated statement of operations which equaled the excess of the carrying value of our Jeffersonville outlet center over its estimated fair value. See Note 11 for additional information on the fair market value calculation. We recognized no impairment losses for our consolidated properties during the year ended December 31, 2017 . See Note 6 for discussion of the impairment of our unconsolidated joint ventures at the Bromont, Quebec and Saint Sauveur, Quebec outlet centers during the years ended December 31, 2018 and 2017. In addition, based upon current market conditions, one of our outlet centers has an estimated fair value significantly less than its recorded carrying value of approximately $100.0 million . However, based on our current plan with respect to that outlet center, we believe that its carrying amount is recoverable and therefore no impairment charge was recorded. Accordingly, we will continue to monitor circumstances and events in future periods that could affect inputs such as the expected holding period, operating cash flow forecasts and capitalization rates, utilized to determine whether an impairment charge is necessary. As these inputs are difficult to predict and are subject to future events that may alter our assumptions, the future cash flows estimated by management in its impairment analysis may not be achieved, and actual losses or impairment may be realized in the future. 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 or if circumstances exist, 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 an other than temporary 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, estimated hold period, terminal capitalization rates, demand for space, competition for tenants, discount and capitalization rates, 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. Sales of Real Estate - For sales of real estate where we have consideration to which we are entitled in exchange for transferring the real estate, the related assets and liabilities are removed from the balance sheet and the resultant gain or loss is recorded in the period the transaction closes. Any post sale involvement is accounted for as a separate performance obligations and when the separate performance obligations are satisfied, the sales price allocated to each is recognized. For transactions that do not meet the criteria for a sale, we evaluate the nature of the continuing involvement, including put and call provisions, if present, and account for the transaction as a financing arrangement, profit-sharing arrangement, leasing arrangement or other alternate method of accounting, rather than as a sale, based on the nature and extent of the continuing involvement. Some transactions may have numerous forms of continuing involvement. In those cases, we determine which method is most appropriate based on the substance of the transaction. Discontinued Operations - Properties that are sold or classified as held for sale are classified as discontinued operations provided that the disposal represents a strategic shift that has (or will have) a major effect on our operations and financial results (e.g., a disposal of a major geographical area, a major line of business, a major equity method investment or other major parts of an entity). 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 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. 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 2016 - 2019 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 United States Generally Accepted Accounting Principles ("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 it is not probable that 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, 2019 , 2018 and 2017 were taxable as follows: Common dividends per share: 2019 2018 2017 Ordinary income $ 1.3261 $ 1.3919 $ 1.1660 Capital gain — 0.0006 — Return of capital 0.0889 — 0.1865 $ 1.4150 $ 1.3925 $ 1.3525 The following reconciles net income available to the Company's shareholders to taxable income available to common shareholders for the years ended December 31, 2019 , 2018 and 2017 (in thousands): 2019 2018 2017 Net income available to the Company's shareholders $ 87,855 $ 43,655 $ 68,002 Book/tax difference on: Depreciation and amortization 51,602 58,208 10,685 Sale of assets and interests in unconsolidated entities (41,138 ) (3,243 ) (8,718 ) Equity in earnings from unconsolidated joint ventures 1,447 18,444 15,662 Share-based payment compensation 8,246 6,269 221 Other differences 8,948 (630 ) (1,089 ) Taxable income available to common shareholders $ 116,960 $ 122,703 $ 84,763 Revenue Recognition - As a lessor, substantially all of our revenues are earned from arrangements that are within the scope of ASC 842. We utilized the practical expedient in ASU 2018-11 to account for lease and non-lease components as a single component which resulted in all of our revenues associated with leases being recorded as rental revenues in the consolidated statements of operations. Base rentals are recognized on a straight-line basis over the term of the lease. Tenant expense reimbursements are recognized in the period the applicable expenses are incurred. As a result of combining all components of a lease, all fixed contractual payments, including consideration received from certain executory costs, are now recognized on a straight-line basis. Straight-line rent adjustments recorded as a receivable in other assets on the consolidated balance sheets were approximately $61.6 million and $57.5 million as of December 31, 2019 and 2018 , respectively. Common area maintenance expense reimbursements are based on the tenant's proportionate share of the allocable operating expenses for the property. 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. The majority of our 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. 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 and leasing fees received from unconsolidated affiliates are recognized as revenue when earned to the extent of the third party partners' ownership interest. Development and leasing fees 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 and marketing fees are recognized as revenue when earned. 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. Expense reimbursements from unconsolidated joint ventures are recognized in the period the applicable expenses are incurred. Uncollectible Tenant Revenues - Due to the adoption of ASC 842 effective January 1, 2019, uncollectible tenant revenues were recorded as a contra-revenue adjustment in 2019. If it is determined collection is not probable we record revenues on a cash basis. Previously in 2018 and 2017, these adjustments were recorded in general and administrative expense. 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 2019 , 2018 or 2017 . Supplemental Cash Flow Information - We purchase capital equipment and incur costs relating to construction of new facilities, including tenant finishing allowances. Expenditures included in accounts payable and accrued expenses were as follows for the years ended December 31, 2019 , 2018 and 2017 (in thousands): 2019 2018 2017 Costs relating to construction included in accounts payable and accrued expenses $ 17,619 $ 15,772 $ 32,060 Interest paid, net of interest capitalized was as follows for the years ended December 31, 2019 , 2018 and 2017 (in thousands): 2019 2018 2017 Interest paid, net of interest capitalized $ 57,237 $ 60,529 $ 56,730 Information related to non-cash assets and liabilities recorded as a result of the adoption of ASC 842 in 2019 was as follows (in thousands): 2019 Non-Cash operating lease right-of-use assets exchanged for operating lease liabilities $ 87,679 Non-Cash operating lease liabilities exchanged for operating right-of-use assets $ 92,354 The difference between the recorded operating lease liabilities and operating right-of-use assets represents the accrued straight-line rent liability of $5.0 million and our prepaid rent balances of $307,000 previously recognized under Accounting Standards Codification Topic 840 “Leases” (“ASC 840”) that were reclassified to the operating leases right-of use assets under ASC 842. Accounting for Equity-Based Compensation - We have a shareholder approved equity-based compensation plan, the Incentive Award Plan of Tanger Factory Outlet Centers, Inc. and Tanger Properties Limited Partnership (Amended and Restated as of April 4, 2014) (the "Plan"), which covers our independent directors, officers and our employees. We may issue non-qualified options and other equity-based awards under the Plan. We account for our equity-based compensation plan under the fair value provisions of the relevant accounting guidance and we estimate expected forfeitures in determining compensation cost. 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 equity as a component of accumulated other comprehensive income (loss) in the consolidated balance sheets. Recently adopted accounting standards (other than ASC 842 Leases, see Note 21) In October 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update (“ASU”) 2018-16, Inclusion of the Secured Overnight Financing Rate (“SOFR”) Overnight Index Swap (“OIS”) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes to Accounting Standards Codification 815. ASU 2018-16 expands the list of U.S. benchmark interest rates permitted in the application of hedge accounting by adding the OIS rate based on SOFR as an eligible benchmark interest rate. The mandatory effective date for calendar year-end public companies was January 1, 2019. The adoption of ASU 2018-16 as of January 1, 2019 did not have a material impact on our consolidated financial statements. In June 2018, the FASB issued ASU 2018-07, Improvements to Nonemployee Share-Based Payment Accounting. ASU 2018-07 amends prior employee share-based payment guidance to include nonemployee share-based payment transactions for acquiring services or property. This ASU now aligns the determination of the measurement date, the accounting for performance conditions, and the accounting for share-based payments after vesting in addition to other items. The provisions of ASU 2018-07 were effective for us as of January 1, 2019 using a modified transition method upon adoption, and early adoption was permitted. The adoption of ASU 2018-07 as of January 1, 2019 did not have a material impact on our consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815), Targeted Improvements to Accounting for Hedging Activities. The new guidance made more financial and nonfinancial hedging strategies eligible for hedge accounting. It also amended the presentation and disclosure requirements and changed how companies assess effectiveness. It is intended to more closely align hedge accounting with companies’ risk management strategies, simplify the application of hedge accounting, and increase transparency as to the scope and results of hedging programs. The adoption of ASU 2017-12 as of January 1, 2019 did not have a material impact on our consolidated financial statements. Recently issued accounting standards to be adopted In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement. ASU 2018-13 is intended to improve the effectiveness of disclosures required by entities regarding recurring and nonrecurring fair value measurements. ASU 2018-13 is effective for reporting periods beginning after December 15, 2019, with early adoption permitted. The adoption of ASU 2018-13 will not have a material impact on our consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13 to amend the accounting for credit losses for certain financial instruments. Under the new guidance, an entity recognizes its estimate of expected credit losses as an allowance, whi

Acquisition of Rental Property

Acquisition of Rental Property	12 Months Ended
	Dec. 31, 2019
Acquisition of Rental Property [Abstract]
Acquisition of Rental Property	Acquisition of Rental Property 2017 Acquisition Foxwoods In November 2017, we successfully settled litigation with the estate of our former partner in the Foxwoods, Connecticut joint venture. In return for mutual releases and no cash consideration, the estate tendered its partnership interest to the Company. Prior to this settlement, we had a 100%

Disposition of Properties

Disposition of Properties	12 Months Ended
	Dec. 31, 2019
Disposition of Properties [Abstract]
Disposition of Properties	Disposition of Properties The following table sets forth the properties sold for the years ended 2019 and 2017 (in thousands). No properties were sold during 2018. Properties Locations Date Sold Square Feet Net Sales Proceeds Gain on Sale 2019 Dispositions: (1) Nags Head, Ocean City, Park City, and Williamsburg Nags Head, NC, Ocean City, MD, Park City, UT, and Williamsburg, IA March 2019 878 $ 128,248 $ 43,422 Land outparcels Savannah, GA and Seymour, IN July 2019 — $ 257 $ — 878 $ 128,505 $ 43,422 2017 Dispositions: (1) Westbrook Westbrook, CT May 2017 290 $ 39,213 $ 6,943 (1)

Development of Consolidated Ren

Development of Consolidated Rental Properties	12 Months Ended
	Dec. 31, 2019
Real Estate [Abstract]
Development of Consolidated Rental Properties	Development of Consolidated Rental Properties 2017 Developments Fort Worth In October 2017, we opened a 352,000 square foot wholly-owned outlet center in the greater Fort Worth, Texas area, located within the 279-acre Champions Circle mixed-use development adjacent to Texas Motor Speedway. Lancaster Expansion In September 2017, we opened a 123,000

Investments in Unconsolidated R

Investments in Unconsolidated Real Estate Joint Ventures	12 Months Ended
	Dec. 31, 2019
Equity Method Investments and Joint Ventures [Abstract]
Investments in Unconsolidated Real Estate Joint Ventures	Investments in Unconsolidated Real Estate Joint Ventures The equity method of accounting is used to account for each of the individual joint ventures. We have an ownership interest in the following unconsolidated real estate joint ventures: As of December 31, 2019 Joint Venture Outlet Center Location Ownership % Square Feet (in 000's) Carrying Value of Investment (in millions) Total Joint Venture Debt, Net (in millions) (1) Investments included in investments in unconsolidated joint ventures: RioCan Canada Various 50.0 % 764 $ 94.7 $ 9.2 $ 94.7 Investments included in other liabilities: Columbus (2) Columbus, OH 50.0 % 355 $ (3.5 ) $ 85.0 Charlotte (2) Charlotte, NC 50.0 % 399 (13.0 ) 99.5 National Harbor (2) National Harbor, MD 50.0 % 341 (5.9 ) 94.4 Galveston/Houston (2) Texas City, TX 50.0 % 353 (19.7 ) 79.9 $ (42.1 ) As of December 31, 2018 Joint Venture Outlet Center Location Ownership % Square Feet (in 000's) Carrying Value of Investment (in millions) Total Joint Venture Debt, Net (in millions) (1) Investments included in investments in unconsolidated joint ventures: RioCan Canada Various 50.0 % 924 $ 96.0 $ 9.3 $ 96.0 Investments included in other liabilities: Columbus (2) Columbus, OH 50.0 % 355 $ (1.6 ) $ 84.7 Charlotte (2) Charlotte, NC 50.0 % 398 (10.8 ) 99.5 National Harbor (2) National Harbor, MD 50.0 % 341 (5.1 ) 94.5 Galveston/Houston (2) Texas City, TX 50.0 % 353 (15.0 ) 79.6 $ (32.5 ) (1) Net of debt origination costs and including premiums of $1.1 million and $1.4 million as of December 31, 2019 and 2018 , respectively. (2) We separately report investments in joint ventures for which accumulated distributions have exceeded investments in and our share of net income or loss of the joint ventures within other liabilities in the consolidated balance sheets because we are committed and intend to provide further financial support to these joint ventures. The negative carrying value is due to the distributions of proceeds from mortgage loans and quarterly distributions of excess cash flow exceeding the original contributions from the partners and equity in earnings of the joint ventures. 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, 2019 2018 2017 Fees: Management and marketing $ 2,308 $ 2,334 $ 2,310 Leasing and other fees 126 162 142 Expense reimbursements from unconsolidated joint ventures 2,985 2,499 1,212 Total Fees $ 5,419 $ 4,995 $ 3,664 Expense reimbursements from unconsolidated joint ventures were previously included in expense reimbursements in our Form 10-K for the year ended December 31, 2018. As these revenues are not related to leases, the 2018 amounts have been reclassified to management, leasing and other services on the consolidated statements of operations to conform to the current year presentation. See Note 21 for discussion of adoption of ASC 842. 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 “Condensed Combined 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 $3.8 million and $4.1 million as of December 31, 2019 and 2018 , respectively) are amortized over the various useful lives of the related assets. Charlotte In July 2014, we opened an approximately 398,000 square foot outlet center in Charlotte, North Carolina that was developed through, and is owned by, a joint venture formed in May 2013. In June 2018, the Charlotte joint venture closed on a $100.0 million mortgage loan with a fixed interest rate of approximately 4.3% and a maturity date of July 2028. The proceeds from the loan were used to pay off the existing $90.0 million mortgage loan with an interest rate of LIBOR + 1.45% , which had an original maturity date of November 2018. The joint venture distributed the incremental net loan proceeds of $9.3 million equally to the partners. Our partner is providing property management, marketing and leasing services to the joint venture. Columbus In June 2016, we opened an approximately 355,000 square foot outlet center in Columbus, Ohio. The development was initially fully funded with equity contributed to the joint venture by Tanger and its partner. In November 2016, the joint venture closed on an interest-only mortgage loan of $85.0 million at an interest rate of LIBOR + 1.65% . The loan initially matured in November 2019, with two one-year extension options. The joint venture received net loan proceeds of $84.2 million and distributed them equally to the partners. In October 2019, the joint venture exercised its first option to extend the mortgage loan for one year to November 2020 under the same terms. We are providing property management, marketing and leasing services to the joint venture. Galveston/Houston 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. In July 2017, the joint venture amended and restated the initial construction loan, which had an outstanding balance of $65.0 million , to increase the amount available to borrow from $70.0 million to $80.0 million and extended the maturity date until July 2020 with two one-year options. The amended and restated loan also changed the interest rate from LIBOR + 1.50% to LIBOR + 1.65% . At the closing of the amendment, the joint venture distributed the net proceeds of approximately $14.5 million equally between the partners. We are providing property management, marketing and leasing services to the outlet center. National Harbor In November 2013, we opened an approximately 341,000 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 December 2018, the National Harbor joint venture closed on a $95.0 million mortgage loan with a fixed interest rate of approximately 4.6% and a maturity date of January 2030. The proceeds from the loan were used to pay off the $87.0 million construction loan with an interest rate of LIBOR + 1.65% , which had an original maturity date of November 2019. The joint venture distributed the incremental net loan proceeds of $7.4 million equally to the partners. RioCan Canada We have a 50 /50 co-ownership agreement with RioCan Real Estate Investment Trust to operate and manage outlet centers in Canada. We provide leasing and marketing services for the outlet centers and RioCan provides 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. In 2016, the co-owners commenced construction on a 39,000 square foot expansion, which opened during the second quarter of 2017 to bring the total square feet of the outlet center to approximately 357,000 . Other properties owned by the RioCan Canada co-owners include Cookstown Outlet Mall and Les Factoreries Saint-Sauveur. Cookstown Outlet Mall is approximately 308,000 square feet and Les Factoreries Saint-Sauveur is approximately 116,000 square feet. In May 2019, the RioCan joint venture closed on the sale of its 161,000 square foot outlet center in Bromont, for net proceeds of approximately $6.4 million . Our share of the proceeds was approximately $3.2 million . As a result of this transaction, we recorded a foreign currency loss of approximately $3.6 million in other income (expense), which had been previously recorded in other comprehensive income. During 2018 and 2017, the Rio-Can joint venture recognized impairment charges related to its Bromont and Saint Sauveur properties. The impairment charges were primarily driven by, among other things, new competition in the market and changes in market capitalization rates. The table below summarizes the impairment charges taken during 2018 and 2017 (in thousands): Impairment Charge (1) Outlet Center Total Our Share 2018 Bromont and Saint Sauveur $ 14,359 $ 7,180 2017 Bromont and Saint Sauveur $ 18,042 $ 9,021 (1) The fair value was determined using an income approach considering the prevailing market income capitalization rates for similar assets. Condensed combined summary financial information of joint ventures accounted for using the equity method as of December 31, 2019 and 2018 and for the years ended December 31, 2019 , 2018 and 2017 is as follows (in thousands): Condensed Combined Balance Sheets - Unconsolidated Joint Ventures 2019 2018 Assets Land $ 90,859 $ 91,443 Buildings, improvements and fixtures 477,061 469,834 Construction in progress 4,779 2,841 572,699 564,118 Accumulated depreciation (132,860 ) (113,713 ) Total rental property, net 439,839 450,405 Cash and cash equivalents 19,750 16,216 Deferred lease costs, net 6,772 8,437 Prepaids and other assets 17,789 25,648 Total assets $ 484,150 $ 500,706 Liabilities and Owners' Equity Mortgages payable, net $ 368,032 $ 367,865 Accounts payable and other liabilities 17,173 13,414 Total liabilities 385,205 381,279 Owners' equity 98,945 119,427 Total liabilities and owners' equity $ 484,150 $ 500,706 Condensed Combined Statements of Operations- Unconsolidated Joint Ventures: Year Ended December 31, 2019 2018 2017 Revenues $ 93,508 $ 94,509 $ 96,776 Expenses: Property operating 36,812 37,121 36,507 General and administrative 271 266 350 Impairment charges — 14,359 18,042 Depreciation and amortization 24,454 26,262 28,162 Total expenses 61,537 78,008 83,061 Other income (expense): Interest expense (16,234 ) (14,518 ) (10,365 ) Other non-operating income 507 234 71 Total other income (expense) $ (15,727 ) $ (14,284 ) $ (10,294 ) Net income $ 16,244 $ 2,217 $ 3,421 The Company and Operating Partnership's share of: Net income $ 7,839 $ 924 $ 1,937 Depreciation, amortization and asset impairments (real estate related) $ 12,512 $ 20,494 $ 22,878

Deferred Charges

Deferred Charges	12 Months Ended
	Dec. 31, 2019
Deferred Costs [Abstract]
Deferred Charges	Deferred Charges Deferred lease costs and other intangibles, net as of December 31, 2019 and 2018 consist of the following (in thousands): 2019 2018 Deferred lease costs $ 85,444 $ 87,590 Intangible assets: Above market leases 46,252 49,869 Lease in place value 58,195 64,152 Tenant relationships 37,221 40,690 Other intangibles 41,531 48,639 268,643 290,940 Accumulated amortization (171,931 ) (174,066 ) Deferred lease costs and other intangibles, net $ 96,712 $ 116,874 Below market lease intangibles, net of accumulated amortization, included in other liabilities on the consolidated balance sheets as of December 31, 2019 and 2018 were $19.5 million and $21.7 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, 2019 , 2018 and 2017 was $13.7 million , $15.1 million and $17.8 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, 2019 , 2018 and 2017 was $(1.0) million , $(2.1) million and $(2.4) million , 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 (1) Deferred Lease Costs and Other Intangibles (2) 2020 $ 410 $ 5,172 2021 299 4,611 2022 285 4,319 2023 368 3,668 2024 298 3,407 Total $ 1,660 $ 21,177 (1) These net amounts are recorded as a reduction of base rentals. (2)

Debt of the Company

Debt of the Company	12 Months Ended
	Dec. 31, 2019
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 $600.0 million . The Company also guarantees the Operating Partnership's unsecured term loan. The Operating Partnership had the following amounts outstanding on the debt guaranteed by the Company as of December 31, 2019 and 2018 (in thousands): 2019 2018 Unsecured lines of credit $ — $ 145,100 Unsecured term loan $ 350,000 $ 350,000

Debt of the Operating Partnersh

Debt of the Operating Partnership	12 Months Ended
	Dec. 31, 2019
Tanger Properties Limited Partnership [Member]
Debt of the Operating Partnership	Debt of the Operating Partnership The debt of the Operating Partnership as of December 31, 2019 and 2018 consisted of the following (in thousands): 2019 2018 Stated Interest Rate(s) Maturity Date Principal Book Value (1) Principal Book Value (1) Senior, unsecured notes: Senior notes 3.875 % December 2023 250,000 247,308 250,000 246,664 Senior notes 3.750 % December 2024 250,000 248,127 250,000 247,765 Senior notes 3.125 % September 2026 350,000 346,215 350,000 345,669 Senior notes 3.875 % July 2027 300,000 296,953 300,000 296,565 Mortgages payable: Atlantic City (2) (3) 5.14 % - 7.65% November 2021- December 2026 30,909 32,531 34,279 36,298 Southaven LIBOR + 1.80% April 2021 51,400 51,272 51,400 51,173 Unsecured term loan LIBOR + 0.90% April 2024 350,000 347,367 350,000 346,799 Unsecured lines of credit LIBOR + 0.875% October 2021 — — 145,100 141,985 $ 1,582,309 $ 1,569,773 $ 1,730,779 $ 1,712,918 (1) Includes premiums and net of debt discount and unamortized debt origination costs. Excludes $2.0 million of unamortized debt origination costs related to unsecured lines of credit as of December 31, 2019 recorded in prepaids and other assets in the Consolidated Balance Sheet. Unamortized debt origination costs were $11.2 million and $14.1 million as of December 31, 2019 and 2018 , respectively. Amortization of deferred debt origination costs included in interest expense for the years ended December 31, 2019 , 2018 and 2017 was $3.0 million , $3.1 million and $3.3 million , respectively. (2) The effective interest rate assigned during the purchase price allocation to this assumed mortgage during the acquisition in 2011 was 5.05% . (3) Principal and interest due monthly with remaining principal due at maturity. Certain of our properties, which had a net book value of approximately $174.2 million at December 31, 2019 , serve as collateral for mortgages payable. We maintain unsecured lines of credit that, as of December 31, 2019 , provided for borrowings of up to $600.0 million , including a separate $20.0 million liquidity line and a $580.0 million syndicated line. The syndicated line may be increased up to $1.2 billion through an accordion feature in certain circumstances. As of December 31, 2019 , letters of credit totaling $170,000 were issued under the lines of credit. 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, 2019 , we believe we were in compliance with all of our debt covenants. 2018 Transactions Increased Borrowing Capacity and Extension of Unsecured Lines of Credit In January 2018, we closed on amendments to our unsecured lines of credit, which increased the borrowing capacity from $520.0 million to $600.0 million and extended the maturity date from October 2019 to October 2021, with a one-year extension option. We also reduced the interest rate spread over LIBOR from 0.90% to 0.875% , and increased the incremental borrowing availability through an accordion feature on the syndicated line from $1.0 billion to $1.2 billion . Loan origination costs associated with the amendments totaled approximately $2.3 million . Southaven Mortgage In February 2018, the consolidated joint venture that owns the Tanger outlet center in Southaven, Mississippi amended and restated the $60.0 million mortgage loan secured by the property that was scheduled to mature in April 2018. The amended and restated loan reduced the principal balance to $51.4 million , increased the interest rate from LIBOR + 1.75% to LIBOR + 1.80% and extended the maturity to April 2021, with a two-year extension option. In March 2018, the consolidated joint venture entered into an interest rate swap, effective March 1, 2018, that fixed the base LIBOR rate at 2.47% on a notional amount of $40.0 million through January 31, 2021. Unsecured Term Loan In October 2018, we amended and restated our unsecured term loan, increasing the size of the loan from $325.0 million to $350.0 million , extending the maturity from April 2021 to April 2024, and reducing the interest rate spread over LIBOR from 0.95% to 0.90% . The $25.0 million of proceeds were used to pay down the balances outstanding under our unsecured lines of credit. 2017 Transactions $300.0 Million Unsecured Senior Notes due 2027 In July 2017, we completed an underwritten public offering of $300.0 million of 3.875% senior notes due 2027 (the "2027 Notes"). The 2027 Notes priced at 99.579% of the principal amount to yield 3.926% to maturity. The 2027 Notes pay interest semi-annually at a rate of 3.875% per annum and mature on July 15, 2027. The net proceeds from the offering, after deducting the underwriting discount and offering expenses, were approximately $295.9 million . In August 2017, we used the net proceeds from the sale of the 2027 Notes, together with borrowings under our unsecured lines of credit, to redeem all of our 6.125% senior notes due 2020 (the "2020 Notes") (approximately $300.0 million in aggregate principal amount outstanding). The 2020 Notes were redeemed at par plus a “make-whole” premium of approximately $34.1 million . In addition, we wrote off approximately $1.5 million of unamortized debt discount and debt origination costs related to the 2020 Notes. Foxwoods Debt Repayment In November 2017, we repaid the $70.3 million floating rate mortgage loan secured by the Foxwoods property with borrowings under its unsecured floating rate lines of credit. Debt Maturities Maturities of the existing long-term debt as of December 31, 2019 for the next five years and thereafter are as follows (in thousands): Calendar Year Amount 2020 $ 3,566 2021 57,193 2022 4,436 2023 254,768 2024 605,140 Thereafter 657,206 Subtotal 1,582,309 Net discount and debt origination costs (12,536 ) Total $ 1,569,773

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2019
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, 2019 and 2018 (notional amounts and fair values in thousands): Fair Value Effective Date Maturity Date Notional Amount Bank Pay Rate Company Average Fixed Pay Rate 2019 2018 Assets (Liabilities) (1) : April 13, 2016 January 1, 2021 $ 175,000 1 month LIBOR 1.03 % $ 1,018 $ 4,948 March 1, 2018 January 31, 2021 40,000 1 month LIBOR 2.47 % (376 ) (6 ) August 14, 2018 January 1, 2021 150,000 1 month LIBOR 2.20 % (896 ) 807 July 1, 2019 February 1, 2024 25,000 1 month LIBOR 1.75 % (170 ) — Total $ 390,000 $ (424 ) $ 5,749 (1) Asset balances are recorded in prepaids and other assets on the consolidated balance sheets and liabilities are recorded in other liabilities on the consolidated balance sheets. 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. Changes in the fair value of derivatives designated and qualifying as cash flow hedges is recorded in accumulated other comprehensive loss and subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. The following table represents the effect of the derivative financial instruments on the accompanying consolidated financial statements for the years ended December 31, 2019 , 2018 and 2017 , respectively (in thousands): 2019 2018 2017 Interest Rate Swaps (Effective Portion): Amount of gain (loss) recognized in OCI $ (6,174 ) $ 405 $ 1,351

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2019
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 Fair Value Measurements on a 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, 2019: Asset: Interest rate swaps (prepaids and other assets) $ 1,018 $ — $ 1,018 $ — Total assets $ 1,018 $ — $ 1,018 $ — Liabilities: Interest rate swaps (other liabilities) $ 1,442 $ — $ 1,442 $ — Total liabilities $ 1,442 $ — $ 1,442 $ — 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, 2018: Assets: Interest rate swaps (prepaids and other assets) $ 5,755 $ — $ 5,755 $ — Total assets $ 5,755 $ — $ 5,755 $ — Liabilities: Interest rate swaps (other liabilities) $ 6 $ — $ 6 $ — Total liabilities $ 6 $ — $ 6 $ — Fair values of interest rate swaps are approximated using Level 2 inputs based on current market data received from financial sources that trade such instruments and are based on prevailing market data and derived from third party proprietary models based on well recognized financial principles including counterparty risks, credit spreads and interest rate projections, as well as reasonable estimates about relevant future market conditions. Fair Value Measurements on a Nonrecurring Basis The following table sets forth our assets that are measured at fair value on a nonrecurring basis 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, 2019: Asset: Long-lived assets $ 10,000 $ — $ — $ 10,000 Fair value as of September 30, 2018: Asset: Long-lived assets $ 50,000 $ — $ — $ 50,000 During the third quarter 2018, we determined that the estimated future undiscounted cash flows of our Jeffersonville outlet center did not exceed the property's carrying value. This shortfall was due to an expected decline in operating results caused by anticipated store closures from bankruptcy filings and brand-wide restructurings and a shift in the local competitive environment. Accordingly we recorded a $49.7 million impairment charge in our consolidated statement of operations which equaled the excess of the carrying value of our Jeffersonville outlet center over its estimated fair value. The estimated fair value was based on the income approach. The income approach involves discounting the estimated income stream and reversion (presumed sale) value of a property over an estimated holding period to a present value at a risk-adjusted rate. During the fourth quarter of 2019, in anticipation of further store closings and declining operating results, we recorded an additional impairment charge of $37.6 million in our consolidated statement of operations which equaled the excess of the carrying value of our Jeffersonville outlet center over its estimated fair value. The estimated fair value was based on the income approach. Discount rates and terminal capitalization rates utilized in the approach above were derived from property-specific information, market transactions and other financial and industry data. The terminal capitalization rate and discount rate are significant unobservable inputs in determining the fair value. These inputs are classified under Level 3 in the fair value hierarchy above. The table below summarizes the terminal capitalization rate and discount rate used: December 31, 2019 September 30, 2018 Terminal capitalization rate 12 % 10 % Discount rate 13 % 10 % Other Fair Value Disclosures The estimated fair value and recorded value of our debt as of December 31, 2019 and 2018 were as follows (in thousands): 2019 2018 Level 1 Quoted Prices in Active Markets for Identical Assets or Liabilities $ — $ — Level 2 Significant Observable Inputs 1,169,481 1,085,138 Level 3 Significant Unobservable Inputs 434,333 583,337 Total fair value of debt $ 1,603,814 $ 1,668,475 Recorded value of debt $ 1,569,773 $ 1,712,918 Our senior unsecured notes are publicly-traded which provides quoted market rates. However, due to the limited trading volume of these notes, we have classified these instruments as Level 2 in the hierarchy. Our other debt is classified as Level 3 given the unobservable inputs utilized in the valuation. Our unsecured term loan, unsecured lines of credit and variable interest rate mortgages are all LIBOR based instruments. When selecting the discount rates for purposes of estimating the fair value of these instruments, we evaluated the original credit spreads and do not believe that the use of them differs materially from current credit spreads for similar instruments and therefore the recorded values of these debt instruments is considered their fair value. 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	12 Months Ended
	Dec. 31, 2019
Tanger Factory Outlet Centers, Inc. [Member]
Schedule of Shareholders' Equity of the Company [Line Items]
Shareholders' Equity of the Company	Shareholders' Equity of the Company As discussed in Note 14, each Class A common limited partnership unit is exchangeable for one common share of the Company. The following table sets forth the number of Class A common limited partnership units exchanged for an equal number of common shares for the years ended December 31, 2019 , 2018 and 2017 : 2019 2018 2017 Exchange of Class A limited partnership units 49,511 34,749 32,348 Share Repurchase Program In May 2017, the Company announced that our Board of Directors authorized the repurchase of up to $125.0 million of its outstanding common shares as market conditions warrant over a period commencing on May 19, 2017 and expiring on May 18, 2019. In February 2019, the Company’s Board of Directors authorized the repurchase of an additional $44.3 million of our outstanding common shares for an aggregate authorization of $169.3 million until May 2021. Repurchases may be made from time to time through open market, privately-negotiated, structured or derivative transactions (including accelerated share repurchase transactions), or other methods of acquiring shares. The Company intends to structure open market purchases to occur within pricing and volume requirements of Rule 10b-18. The Company may, from time to time, enter into Rule 10b5-1 plans to facilitate the repurchase of its shares under this authorization. Shares repurchased during the years ended December 31, 2019 , 2018 and 2017 were as follows: Year Ended December 31, 2019 2018 2017 Total number of shares purchased 1,209,328 919,249 1,911,585 Average price paid per share $ 16.52 $ 21.74 $ 25.80 Total price paid exclusive of commissions and related fees (in thousands) $ 19,976 $ 19,980 $ 49,324 The remaining amount authorized to be repurchased under the program as of December 31, 2019 was approximately $80.0 million

Partners' Equity of the Operati

Partners' Equity of the Operating Partnership	12 Months Ended
	Dec. 31, 2019
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 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. Likewise, when the Company repurchases its outstanding common shares, the Operating Partnership repurchases corresponding Class B common limited partnership units held by Tanger LP Trust. The following table sets forth the changes in outstanding partnership units for the years ended December 31, 2019 , 2018 and 2017 : Limited Partnership Units General partnership units Class A Class B Total Balance December 31, 2016 1,000,000 5,027,781 95,095,891 100,123,672 Units withheld for employee income taxes — — (69,886 ) (69,886 ) Exchange of Class A limited partnership units — (32,348 ) 32,348 — Grant of restricted common share awards by the Company, net of forfeitures — — 411,968 411,968 Repurchase of units — — (1,911,585 ) (1,911,585 ) Units issued upon exercise of options — — 1,800 1,800 Balance December 31, 2017 1,000,000 4,995,433 93,560,536 98,555,969 Units withheld for employee income taxes — — (89,437 ) (89,437 ) Exchange of Class A limited partnership units — (34,749 ) 34,749 — Grant of restricted common share awards by the Company — — 355,184 355,184 Repurchase of units — — (919,249 ) (919,249 ) Balance December 31, 2018 1,000,000 4,960,684 92,941,783 97,902,467 Units withheld for employee income taxes — — (131,873 ) (131,873 ) Exchange of Class A limited partnership units — (49,511 ) 49,511 — Grant of restricted common share awards by the Company — — 242,167 242,167 Repurchase of units — — (1,209,328 ) (1,209,328 ) Balance December 31, 2019 1,000,000 4,911,173 91,892,260 96,803,433

Noncontrolling Interests

Noncontrolling Interests	12 Months Ended
	Dec. 31, 2019
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. In 2019 and 2018 , adjustments of the noncontrolling interest in the Operating Partnership were made as a result of the changes in the Company's ownership of the Operating Partnership from additional units received in connection with the Company's issuance of common shares upon the exercise of options and grants of share-based compensation awards, additional units received upon the exchange of Class A common limited partnership units of the Operating Partnership into an equal number of common shares of the Company, and units repurchased by the Operating Partnership as a result of the Company's repurchase of its outstanding common shares. As discussed in Note 13, for the years ended December 31, 2019 and 2018 , Non-Company LPs exchanged 49,511 and 34,749 Class A common limited partnership units of the Operating Partnership, respectively, for an equal number of common shares of the Company. In addition, for the years ended December 31, 2019 and 2018 , the Company repurchased approximately 1,209,328 and 919,249 common shares, respectively, on the open market and the Operating Partnership repurchased an equal number of units held by the Company. The changes in the Company's ownership interests in the subsidiaries impacted consolidated equity during the periods shown as follows (in thousands): 2019 2018 Net income attributable to Tanger Factory Outlet Centers, Inc. $ 87,855 $ 43,655 Increase in Tanger Factory Outlet Centers, Inc. paid-in-capital adjustments to noncontrolling interests 200 322 Changes from net income attributable to Tanger Factory Outlet Centers, Inc. and transfers from noncontrolling interest $ 88,055 $ 43,977

Earnings Per Share of the Compa

Earnings Per Share of the Company	12 Months Ended
	Dec. 31, 2019
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, 2019 , 2018 and 2017 (in thousands, except per share amounts): 2019 2018 2017 Numerator Net income attributable to Tanger Factory Outlet Centers, Inc. $ 87,855 $ 43,655 $ 68,002 Less allocation of earnings to participating securities (1,336 ) (1,211 ) (1,209 ) Net income available to common shareholders of Tanger Factory Outlet Centers, Inc. $ 86,519 $ 42,444 $ 66,793 Denominator Basic weighted average common shares 92,808 93,309 94,506 Effect of outstanding options and certain restricted common shares — 1 16 Diluted weighted average common shares 92,808 93,310 94,522 Basic earnings per common share: Net income $ 0.93 $ 0.45 $ 0.71 Diluted earnings per common share: Net income $ 0.93 $ 0.45 $ 0.71 We determine diluted earnings per share based on the weighted average number of common shares outstanding combined with the incremental weighted average shares that would have been outstanding assuming all potentially dilutive securities were converted into common shares at the earliest date possible. There were no material securities which had a dilutive effect on earnings per common share for the years ended December 31, 2019 and 2018. Notional units granted under our equity compensation plan are considered contingently issuable common shares and are included in earnings per share if the effect is dilutive using the treasury stock method and the common shares would be issuable if the end of the reporting period were the end of the contingency period. For the years ended December 31, 2019 , 2018 , and 2017 , approximately 1.1 million , 1.0 million and 603,000 units were excluded from the computation, respectively, because these units would not have been issuable if the end of the reporting period were the end of the contingency period or because they were anti-dilutive. With respect to outstanding options, the effect of dilutive common shares is determined using the treasury stock method whereby outstanding options are assumed exercised at the beginning of the reporting period and the exercise proceeds from such options and the average measured but unrecognized compensation cost during the period are assumed to be used to repurchase our common shares at the average market price during the period. For the years ended December 31, 2019 , 2018 and 2017 , approximately 523,000 , 535,000 and 169,000 options were excluded from the computation, respectively, as they were anti-dilutive. 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 Operat

Earnings Per Unit of the Operating Partnership	12 Months Ended
	Dec. 31, 2019
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, 2019 , 2018 and 2017 (in thousands, except per unit amounts): 2019 2018 2017 Numerator Net income attributable to partners of the Operating Partnership $ 92,533 $ 45,984 $ 71,611 Allocation of earnings to participating securities (1,336 ) (1,211 ) (1,209 ) Net income available to common unitholders of the Operating Partnership $ 91,197 $ 44,773 $ 70,402 Denominator Basic weighted average common units 97,766 98,302 99,533 Effect of outstanding options and certain restricted common units — 1 16 Diluted weighted average common units 97,766 98,303 99,549 Basic earnings per common unit: Net income $ 0.93 $ 0.45 $ 0.71 Diluted earnings per common unit: Net income $ 0.93 $ 0.45 $ 0.71 We determine diluted earnings per unit based on the weighted average number of common units outstanding combined with the incremental weighted average units that would have been outstanding assuming all potentially dilutive securities were converted into common units at the earliest date possible. There were no material securities which had a dilutive effect on earnings per common share for the years ended December 31, 2019 and 2018. Notional units granted under our equity compensation plan are considered contingently issuable common units and are included in earnings per unit if the effect is dilutive using the treasury stock method and the common units would be issuable if the end of the reporting period were the end of the contingency period. For the years ended December 31, 2019 , 2018 , and 2017 , approximately 1.1 million , 1.0 million and 603,000 units were excluded from the computation, respectively, because these units would not have been issuable if the end of the reporting period were the end of the contingency period or because they were anti-dilutive. 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. With respect to outstanding options, the effect of dilutive common units is determined using the treasury stock method, whereby outstanding options are assumed exercised at the beginning of the reporting period and the exercise proceeds from such options and the average measured but unrecognized compensation cost during the period are assumed to be used to repurchase our common units at the average market price during 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, 2019 , 2018 and 2017 , approximately 523,000 , 535,000 and 169,000 options were excluded from the computation, respectively. 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.

Equity-Based Compensation

Equity-Based Compensation	12 Months Ended
	Dec. 31, 2019
Tanger Factory Outlet Centers, Inc. [Member]
Equity-Based Compensation	Equity-Based Compensation When a common share is 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. As of December 31, 2019, we may issue up to 18.7 million common shares under the Plan. Shares remaining available for future issuance totaled approximately 3,854,000 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). We recorded equity-based compensation expense in general and administrative expenses in the consolidated statements of operations for the years ended December 31, 2019 , 2018 and 2017 , respectively, as follows (in thousands): 2019 2018 2017 Restricted common shares $ 12,036 $ 9,870 $ 9,395 Notional unit performance awards 5,918 4,356 3,913 Options 166 443 277 Total equity-based compensation $ 18,120 $ 14,669 $ 13,585 Equity-based compensation expense capitalized as a part of rental property and deferred lease costs were as follows (in thousands): 2019 2018 2017 Equity-based compensation expense capitalized $ 384 $ 1,131 $ 1,044 As of December 31, 2019 , there was $15.3 million of total unrecognized compensation cost related to unvested common equity-based compensation arrangements granted under the Plan. That cost is expected to be recognized over a weighted-average period of 2.4 years. Restricted Common Share and Restricted Share Unit Awards During 2019 , 2018 and 2017 , the Company gra nted approximately 309,000 , 407,000 and 253,000 restricted common shares and restricted share units, respectively, to the Company's non-employee directors and the Company's senior executive officers. The non-employee directors' restricted common shares generally vest ratably over a three year period and the senior executive officers' restricted common shares (other than our Chief Executive Officer's) generally vest ratably over periods ranging from three to five years. For the restricted common shares and restricted share units issued to our chief executive officer during 2019, 2018 and 2017, the award agreements generally require him to hold the shares or units issued to him for a minimum of three years following each applicable vesting date or the share issuance date, as applicable. Compensation expense related to the amortization of the deferred compensation is being recognized in accordance with the vesting schedule of the restricted common shares and restricted share units. For all of the restricted common share and restricted share unit awards described above, the grant date fair value of the awards were determined based upon the closing market price of the Company's common shares on the day prior to the grant date. The following table summarizes information related to unvested restricted common shares and restricted share units outstanding for the years ended December 31, 2019 , 2018 , and 2017 : Unvested Restricted Common Shares and Restricted Share Units Number of shares and units Weighted average grant date fair value Outstanding at December 31, 2016 879,268 $ 31.09 Granted 253,431 33.07 Vested (368,043 ) 29.87 Forfeited (14,750 ) 34.39 Outstanding at December 31, 2017 749,906 $ 32.30 Granted (1) 407,156 21.13 Vested (314,982 ) 31.43 Forfeited — — Outstanding at December 31, 2018 842,080 $ 27.56 Granted (2) 308,623 21.05 Vested (469,178 ) 27.73 Forfeited — — Outstanding at December 31, 2019 681,525 $ 23.92 (1) Includes 44,452 restricted share units. (2) Includes 51,217 restricted share units. The table above excludes restricted common shares earned under the 2014 Outperformance Plan. In connection with the 2014 Outperformance Plan, we issued approximately 184,000 restricted common shares in January 2017, with approximately 94,000 vesting immediately and the remaining 90,000 vesting in January 2018, contingent upon continued employment with the Company through the vesting date (unless terminated prior thereto (a) by the Company without cause, (b) by participant for good reason or (c) due to death or disability). The total value of restricted common shares vested during the years ended 2019 , 2018 and 2017 was $9.2 million , $9.2 million and $12.4 million , respectively. During 2019 , 2018 and 2017 , we withheld shares with value equivalent to the employees' obligation for the applicable income and other employment taxes, and remitted the cash to the appropriate taxing authorities. The total number of shares withheld were approximately 132,000 , 89,000 and 70,000 for 2019 , 2018 and 2017 , respectively, and were 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. Total amounts paid for the employees' tax obligation to taxing authorities were $2.5 million , $2.1 million and $2.4 million for 2019 , 2018 and 2017 , respectively, which are reflected as a financing activity within the consolidated statements of cash flows. Notional Unit Performance Awards Outperformance Plan Each year, the Compensation Committee of Tanger Factory Outlet Centers, Inc. approves the terms and the number of awards to be granted under the Tanger Factory Outlet Centers, Inc. Outperformance Plan (the “OPP"). The OPP is a long-term incentive compensation plan. Recipients may earn units which may convert, subject to the achievement of the goals described below, into restricted common shares of the Company based on the Company’s absolute share price appreciation (or absolute total shareholder return) and its share price appreciation relative to its peer group (or relative total shareholder return) over a three-year measurement period. For all recipients (other than our chief executive officer), 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 immediately following the measurement period, and the remaining 50% vesting one year thereafter, contingent upon continued employment with the Company through the vesting date (unless terminated prior thereto (a) by the Company without cause, (b) by participant for good reason or (c) due to death or disability. For our chief executive officer, any shares earned at the end of the three-year measurement period remain subject to a time-based vesting schedule and are issued following vesting, with 50% of the shares vesting immediately following issuance, and the remaining 50% vesting 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 due to retirement or (c) due to death or disability). The following table sets forth OPP performance targets and other relevant information about each plan: 2019 OPP (1) 2018 OPP (1) 2017 OPP (2) 2016 OPP (2),(3) 2015 OPP (2),(4) Performance targets Absolute portion of award: Percent of total award 33% 33% 50% 50% 60% Absolute total shareholder return range 19 % - 30% 19 % - 30% 18 % - 35% 18 % - 35% 25 % - 35% Percentage of units to be earned 20 % - 100% 20 % - 100% 20 % - 100% 20 % - 100% 33 % - 100% Relative portion of award: Percent of total award 67% 67% 50% 50% 40% Percentile rank of peer group range 30 th - 80th 30 th - 80th 40 th - 70th 40 th - 70th 50 th - 70th Percentage of units to be earned 20 % - 100% 20 % - 100% 20 % - 100% 20 % - 100% 33 % - 100% Maximum number of restricted common shares that may be earned 531,827 409,972 296,400 321,900 306,600 Grant date fair value per share $ 12.09 $ 12.42 $ 16.60 $ 15.10 $ 15.85 (1) The number of restricted common shares received under the 2019 and 2018 OPP will be determined on a pro-rata basis by linear interpolation between total shareholder return thresholds, both for absolute total shareholder return and for relative total shareholder return amongst the Company's peer group. The peer group is based on companies included in the FTSE NAREIT Retail Index. (2) The performance shares for the 2017 OPP will convert on a pro-rata basis by linear interpolation between share price appreciation thresholds, both for absolute total shareholder return and for relative total shareholder return. The share price for the purposes of calculation of share price appreciation will be adjusted on a penny-for-penny basis with respect to any dividend payments made during the measurement period. The peer group is based on companies included in the SNL Equity REIT index. (3) On February 15, 2019, the measurement period for the 2016 OPP expired and neither of the Company’s absolute nor relative total shareholder returns were sufficient for employees to earn, and therefore become eligible to vest in, any restricted shares under the plan. Accordingly, all 2016 OPP performance awards were automatically forfeited. (4) On December 31, 2017, the measurement period for the 2015 OPP expired and neither of the Company’s absolute nor relative total shareholder returns were sufficient for employees to earn, and therefore become eligible to vest in, any restricted shares under the plan. Accordingly, all 2015 OPP performance awards were automatically forfeited. The fair values of the OPP awards granted during the years ended December 31, 2019 , 2018 , and 2017 were determined at the grant dates using a Monte Carlo simulation pricing model and the following assumptions: 2019 2018 2017 Risk free interest rate (1) 2.55 % 2.40 % 1.52 % Expected dividend yield (2) 5.3 % 4.8 % 3.4 % Expected volatility (3) 24 % 27 % 19 % (1) Represents the interest rate as of the grant date on U.S. treasury bonds having the same life as the estimated life of the restricted unit grants. (2) The dividend yield is calculated utilizing the dividends paid for the previous five-year period. (3) Based on a mix of historical and implied volatility for our common shares and the common shares of our peer index companies over the measurement period. The following table sets forth OPP activity for the years ended December 31, 2019 , 2018 , and 2017 : Unvested OPP Awards Number of units Weighted average grant date fair value Outstanding as of December 31, 2016 759,176 $ 15.36 Awarded 296,400 16.60 Earned (1) (184,455 ) 14.71 Forfeited (267,710 ) 15.84 Outstanding as of December 31, 2017 603,411 $ 15.83 Awarded 409,972 12.42 Earned — — Forfeited — — Outstanding as of December 31, 2018 1,013,383 $ 14.44 Awarded 531,827 12.09 Earned — — Forfeited (421,306 ) 14.36 Outstanding as of December 31, 2019 1,123,904 $ 13.36 (1) Represents the units under the 2014 OPP that are no longer outstanding and have been settled in restricted common shares. Option Awards Options outstanding at December 31, 2019 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 $ 21.94 298,500 $ 21.94 8.21 59,700 $ 21.94 $ 26.06 61,700 26.06 1.15 61,700 26.06 $ 32.02 163,100 32.02 4.01 163,100 32.02 523,300 $ 25.57 6.06 284,500 $ 28.61 A summary of option activity under the Plan for the years ended December 31, 2019 , 2018 , and 2017 (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, 2016 242,200 $ 30.46 Granted — — Exercised (1,800 ) 29.70 Forfeited (9,200 ) 31.83 Outstanding as of December 31, 2017 231,200 $ 30.42 5.24 $ 28 Granted 331,000 21.94 Exercised — — Forfeited (27,700 ) 22.62 Outstanding as of December 31, 2018 534,500 $ 25.56 7.08 $ — Granted — — Exercised — — Forfeited (11,200 ) 25.27 Outstanding as of December 31, 2019 523,300 $ 25.57 6.06 $ — Vested and Expected to Vest as of December 31, 2019 498,008 $ 25.75 5.97 $ — Exercisable as of December 31, 2019 284,500 $ 28.61 4.27 $ — During February 2018, the Company granted 331,000 options to non-executive employees of the Company. The exercise price of the options granted during the first quarter of 2018 was $21.94 per share 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, which resulted in a weighted average grant date fair value per share of $3.62 and included the following weighted-average assumptions: expected dividend yield 6.24% ; expected life of 7.1 years; expected volatility of 32.47% ; a risk-free rate of 2.8% ; and forfeiture rates of 3.0% to 10.0% dependent upon the employee's position within the Company. The total intrinsic value of options exercised during the year ended December 31, 2017 was $8,000 . For both the years ended December 31, 2019 and 2018, no options were exercised. 401(k) Retirement Savings Plan We have a 401(k) Retirement Savings Plan covering substantially all employees who meet certain age and employment criteria. An employee may invest pretax earnings in the 401(k) plan up to the maximum legal limits (as defined by Federal regulations). This plan allows participants to defer a portion of their compensation and to receive matching contributions for a portion of the deferred amounts. During the years ended December 31, 2019 , 2018 and 2017 , we contributed approximately $889,000 , $872,000 and $862,000

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss of the Company	12 Months Ended
	Dec. 31, 2019
Tanger Factory Outlet Centers, Inc. [Member]
Accumulated Other Comprehensive Loss of the Company	Accumulated Other Comprehensive Loss of the Company The following table presents changes in the balances of each component of accumulated comprehensive income (loss) for the years ended December 31, 2019 , 2018 , and 2017 (in thousands): Tanger Factory Outlet Centers, Inc. Accumulated Other Comprehensive Income (Loss) Noncontrolling Interest in Operating Partnership Accumulated Other Comprehensive (Income) Loss Foreign currency Cash flow hedges Total Foreign currency Cash flow hedges Total Balance December 31, 2016 $ (32,087 ) $ 3,792 $ (28,295 ) $ (1,740 ) $ 201 $ (1,539 ) Other comprehensive income before reclassifications 7,727 1,020 8,747 411 55 466 Reclassification out of accumulated other comprehensive income into interest expense — 263 263 — 13 13 Balance December 31, 2017 (24,360 ) 5,075 (19,285 ) (1,329 ) 269 (1,060 ) Other comprehensive income (loss) before reclassifications (8,250 ) 2,335 (5,915 ) (441 ) 126 (315 ) Reclassification out of accumulated other comprehensive income into interest expense — (1,951 ) (1,951 ) — (105 ) (105 ) Balance December 31, 2018 (32,610 ) 5,459 (27,151 ) (1,770 ) 290 (1,480 ) Other comprehensive income (loss) before reclassifications 4,062 (3,755 ) 307 217 (202 ) 15 Reclassification out of accumulated other comprehensive income (loss) into other income (expense) for foreign currency and interest expense for cash flow hedges 3,454 (2,105 ) 1,349 184 (112 ) 72 Balance December 31, 2019 $ (25,094 ) $ (401 ) $ (25,495 ) $ (1,369 ) $ (24 ) $ (1,393 ) We expect within the next twelve months to reclassify into earnings as a decrease to interest expense approximately $344,000 of the amounts recorded within accumulated other comprehensive income related to the interest rate swap agreements in effect and as of December 31, 2019 .

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss of the Operating Partnership	12 Months Ended
	Dec. 31, 2019
Tanger Properties Limited Partnership [Member]
Accumulated Other Comprehensive Loss of the Operating Partnership	Accumulated Other Comprehensive Loss of the Operating Partnership The following table presents changes in the balances of each component of accumulated comprehensive income (loss) for the years ended December 31, 2019 , 2018 , and 2017 (in thousands): Foreign currency Cash flow hedges Accumulated other comprehensive income (loss) Balance December 31, 2016 $ (33,827 ) $ 3,993 $ (29,834 ) Other comprehensive income before reclassifications 8,138 1,075 9,213 Reclassification out of accumulated other comprehensive income into interest expense — 276 276 Balance December 31, 2017 (25,689 ) 5,344 (20,345 ) Other comprehensive income (loss) before reclassifications (8,691 ) 2,461 (6,230 ) Reclassification out of accumulated other comprehensive income into interest expense — (2,056 ) (2,056 ) Balance December 31, 2018 (34,380 ) 5,749 (28,631 ) Other comprehensive income (loss) before reclassifications 4,279 (3,957 ) 322 Reclassification out of accumulated other comprehensive income (loss) into other income (expense) for foreign currency and interest expense for cash flow hedges 3,638 (2,217 ) 1,421 Balance December 31, 2019 $ (26,463 ) $ (425 ) $ (26,888 ) We expect within the next twelve months to reclassify into earnings as a increase to interest expense approximately $344,000 of the amounts recorded within accumulated other comprehensive income related to the interest rate swap agreements in effect and as of December 31, 2019 .

Supplementary Income Statement

Supplementary Income Statement Information	12 Months Ended
	Dec. 31, 2019
Supplementary Income Statement Information [Abstract]
Supplementary Income Statement Information	Supplementary Income Statement Information The following amounts are included in property operating expenses for the years ended December 31, 2019 , 2018 and 2017 (in thousands): 2019 2018 2017 Advertising and promotion $ 26,022 $ 27,066 $ 29,046 Common area maintenance 70,472 73,367 71,195 Real estate taxes 33,430 32,836 30,695 Other operating expenses 27,810 27,188 24,299 $ 157,734 $ 160,457 $ 155,235

Leasing Agreements

Leasing Agreements	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Leasing Agreements	Lease Agreements On January 1, 2019, we adopted ASC 842, which supersedes ASC 840. We adopted ASC 842 using the modified retrospective approach, whereby there was no cumulative effect adjustments to retained earnings on adoption and prior periods were not restated. Accordingly, our leases and lease related costs, as both lessee and lessor, and lease related receivables, as lessor, are presented under ASC 842 for the year ended December 31, 2019 and under ASC 840 the year ended December 31, 2018. As a lessor, substantially all of our revenues are earned from arrangements that are within the scope of ASC 842. We utilized the practical expedient in ASU 2018-11 to account for lease and non-lease components as a single component which resulted in all of our revenues associated with leases being recorded as rental revenues in the consolidated statements of operations. As a result of the adoption of ASC 842, the amounts disclosed in our Annual Report on Form 10-K for the year ended December 31, 2018 as base rentals, percentage rentals and expense reimbursements have now been combined into rental revenues on the consolidated statements of operations to conform to the current year presentation. In addition, certain amounts previously included in expense reimbursements in our Annual Report on Form10-K for the year ended December 31, 2018, which are not related to leases have been reclassified to management, leasing and other services and other revenues on the consolidated statements of operations to conform to the current year presentation. See Note 6 for additional details on the amounts reclassified to management, leasing and other services. ASC 842 requires certain other accounting changes effective January 1, 2019 where prior year amounts are not reclassified or restated. Uncollectible tenant revenues previously recorded in general and administrative expense are recorded in rental revenues as a contra-revenue account in 2019. As a result of combining all components of a lease, all fixed contractual payments, including consideration received from certain executory costs, are now recognized on a straight-line basis. For the year ended December 31, 2019 , we recorded a straight-line rent adjustment of $6.4 million in rental revenues in our consolidated statements of operations to record revenues from executory costs on a straight-line basis. In addition, direct internal leasing costs are capitalized, however, indirect internal leasing costs previously capitalized are now expensed. We only capitalize the portion of these types of costs incurred that are a direct result of an executed lease. For the year ended December 31, 2019 , lease costs of approximately $4.9 million were expensed which would have been capitalized under ASC 840. As a lessee, the new standard also provides a number of optional provisions, known as practical expedients, which companies may elect to adopt to facilitate implementation. We elected the package of practical expedients which, among other items, precludes us from needing to reassess (1) whether any expired or existing contracts are or contain leases, (2) the lease classification of any expired or existing leases, and (3) initial direct costs for any existing leases. Information as Lessor Under ASC 842 As of December 31, 2019 , we were the lessor to over 2,400 stores in our 32 consolidated outlet centers, under operating leases with initial terms that expire from 2020 to 2035 , with certain agreements containing extension options. We also have certain agreements which require tenants to pay their portion of reimbursable expenses such as common area expenses, utilities, insurance and real estate taxes. For the year ended December 31, 2019 , the components of rental revenues are as follows (in thousands): 2019 Rental revenues - fixed $ 360,513 Rental revenues - variable (1) 103,433 Rental revenues $ 463,946 (1) Primarily includes rents based on a percentage of tenant sales volume and reimbursable expenses such as common area expenses, utilities, insurance and real estate taxes. Future minimum lease receipts under non-cancelable operating leases as of December 31, 2019 , excluding the effect of straight-line rent and variable rentals, are as follows (in thousands): 2020 $ 316,397 2021 282,225 2022 247,874 2023 213,932 2024 179,081 Thereafter 349,234 $ 1,588,743 Information as Lessor Under ASC 840 As of December 31, 2018, we were the lessor to over 2,600 stores in our 36 consolidated outlet centers, under operating leases with initial terms that expire from 2019 to 2033. The majority of our leases contain provisions which provide additional rents based on tenants’ sales volume. Percentage rentals are recognized when specified targets that trigger the contingent rent are met. Future minimum lease receipts under non-cancelable operating leases as of December 31, 2018, excluding the effect of straight-line rent and variable rentals, are as follows (in thousands): 2019 $ 285,343 2020 265,361 2021 229,553 2022 195,808 2023 164,845 Thereafter 364,844 $ 1,505,754 Information as Lessee Under ASC 842 Adoption of the new standard resulted in the recording of operating lease right-of-use assets and operating lease liabilities, of $90.4 million and $95.1 million , respectively, as of January 1, 2019 equal to the present value of the minimum lease payments required under each lease. The difference between the recorded operating lease liability and operating right-of-use assets represents the accrued straight-line rent liability and our prepaid rent balances previously recognized under ASC 840. In March 2019, we sold our Ocean City outlet center, which had an operating lease right-of-use asset and operating lease liability of approximately $2.5 million . Our non-cancelable operating leases, with terms in excess of one year, have terms, including certain extension options, that expire from 2028 to 2101. Certain extension options, which are reasonably certain at inception, are used in the calculation of our operating lease right-of-use assets based on the economic life of the asset. Leases with an initial term of 12 months or less (short-term leases) are not recorded on the balance sheet; we recognize lease expense for these leases on a straight-line basis over the lease term. The majority of our operating lease expense is related to ground leases at the following outlet centers: Myrtle Beach Hwy 17, Atlantic City, Sevierville, Riverhead, Foxwoods and Rehoboth Beach and the lease of our corporate office in Greensboro, North Carolina. For the year ended December 31, 2019 , the components of lease costs are as follows (in thousands): 2019 Operating lease costs $ 5,519 Short-term lease costs 2,297 Variable lease costs (1) 231 Total lease costs $ 8,047 (1) Our variable lease costs relate to our ground leases where increases in payments are based on center financial performance. The discount rate applied to measure each operating lease right-of-use asset and operating lease liability is based on our incremental borrowing rate (“IBR”). We consider the general economic environment and our credit rating and factor in various financing and asset specific adjustments to ensure the IBR is appropriate based on the intended use of the underlying lease. The lease term and discount rates are as follows: 2019 Weighted - average remaining lease term (years) 50 Weighted - average discount rate 5.0 % Cash flow information related to leases for the year ended December 31, 2019 was as follows (in thousands): December 31, 2019 Operating cash outflows related to operating leases $ 5,569 Maturities of lease liabilities as of December 31, 2019 for the next five years and thereafter are as follows (in thousands): 2020 $ 5,568 2021 5,613 2022 5,669 2023 5,709 2024 5,765 Thereafter 226,876 Total lease payments $ 255,200 Less imputed interest 163,963 Present value of lease liabilities $ 91,237 Information as Lessee Under ASC 840 As of December 31, 2018, our non-cancelable operating leases have terms, including certain extension options, that expire from 2019 to 2101. Rental payments for these leases totaled approximately $7.2 million and $7.1 million , for the years ended December 31, 2018 and 2017, respectively. As of December 31, 2018, the majority of our rental payments are related to ground leases at the following outlet centers: Myrtle Beach Hwy 17, Atlantic City, Ocean City, Sevierville, Riverhead, Foxwoods and Rehoboth Beach and the lease of our corporate office in Greensboro, North Carolina. The contingent portion of our ground lease payments is based on center performance and/or changes in an index. For operating leases as of December 31, 2018, minimum lease payments for the next five years and thereafter are as follows (in thousands): 2019 $ 7,526 2020 7,311 2021 7,140 2022 7,127 2023 7,167 Thereafter 258,438 Total minimum payment $ 294,709

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Commitments and Contingencies of Consolidated Properties Capital expenditure commitments Commitments to complete construction of our ongoing capital projects and other capital expenditure requirements amounted to approximately $17.7 million at December 31, 2019 . Litigation We are also subject to legal proceedings and claims, which arise from time to time 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 consolidated financial statements. We record a liability in our consolidated financial statements for these matters when a loss is known or considered probable and the amount can be reasonably estimated. We review these estimates each accounting period as additional information is known and adjust the loss provision when appropriate. If a matter is both probable to result in a liability and the amounts of loss can be reasonably estimated, we estimate and disclose the possible loss or range of loss to the extent necessary to make the consolidated financial statements not misleading. If the loss is not probable or cannot be reasonably estimated, a liability is not recorded in our consolidated financial statements. Employment Agreements We are party to employment agreements with certain executives that provide for compensation and certain other benefits. The agreements also provide for severance payments under certain circumstances. Commitments and Contingencies of Unconsolidated Properties Capital expenditure commitments Contractual commitments for ongoing capital projects and other capital expenditure requirements related to our unconsolidated joint ventures amounted to approximately $1.0 million at December 31, 2019 , of which our portion was approximately $481,000 . Contractual commitments represent only those costs subject to contracts which are legal binding agreements as of December 31, 2019 and do not necessary represent the total cost to complete the projects. Debt 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 mortgage 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. Our joint ventures may contain make whole provisions in the event that demands are made on any existing guarantees. As of December 31, 2019 , the maximum amount of joint venture debt guaranteed by the Company is $19.4 million .

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Dividends In January 2020, the Company's Board of Directors declared a $0.355 cash dividend per common share payable on February 14, 2020 to each shareholder of record on January 31, 2020, and the Trustees of Tanger GP Trust declared a $0.355 cash distribution per Operating Partnership unit to the Operating Partnership's unitholders. Additionally in January 2020, the Company's Board of Directors declared a quarterly dividend of $0.3575 cash dividend per common share payable on May 15, 2020 to holders of record on April 30, 2020, and the Trustees of Tanger GP Trust declared $0.3575 a cash distribution per Operating Partnership unit to the Operating Partnership's unitholders. Interest rates In February 2020, due to a change in our credit rating, our interest rate spread over LIBOR on our $600.0 million unsecured line of credit facility increased from 0.875% to 1.0% and our annual facility fee increased from 0.15% to 0.20% . As of December 31, 2019, there we no outstanding balances under our unsecured lines of credit. In addition, our interest rate spread over LIBOR on our $350.0 million unsecured term loan increased from 0.90% to 1.0% . Equity Grants During February 2020, the Compensation Committee of the Company approved the general terms of the Tanger Factory Outlet Centers, Inc. 2020 Outperformance Plan (the “2020 OPP”) covering the Company's senior executive officers whereby a maximum of approximately 697,000 restricted common shares may be earned if certain share price appreciation goals are achieved over a three year measurement period. Also during February 2020 , the Company gra nted approximately 399,000 restricted common shares and restricted share units to the Company's non-employee directors and the Company's senior executive officers.

Quarterly Financial Data of the

Quarterly Financial Data of the Company (Unaudited)	12 Months Ended
	Dec. 31, 2019
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, 2019 and 2018 (unaudited and in thousands, except per common share data) (1) . This information is not required for the Operating Partnership: Year Ended December 31, 2019 (1) First Quarter (2) Second Quarter Third Quarter Fourth Quarter (3) Total revenues $ 123,155 $ 115,707 $ 118,994 $ 120,492 Net income (loss) 65,841 14,457 24,809 (12,379 ) Income (loss) attributable to Tanger Factory Outlet Centers, Inc. 62,331 13,727 23,546 (11,749 ) Income (loss) available to common shareholders of Tanger Factory Outlet Centers, Inc. $ 61,720 $ 13,613 $ 23,241 $ (12,055 ) Basic earnings per common share: Net income (loss) $ 0.66 $ 0.15 $ 0.25 $ (0.13 ) Diluted earnings per common share: Net income (loss) $ 0.66 $ 0.15 $ 0.25 $ (0.13 ) (1) Quarterly amounts may not add to annual amounts due to the effect of rounding on a quarterly basis. (2) In the first quarter of 2019, net income includes a $43.4 million gain recorded on the sale of our Nags Head, Ocean City, Park City, and Williamsburg outlet centers. (3) In the fourth quarter of 2019, net income includes a $37.6 impairment charge related to our Jeffersonville, Ohio outlet center. Year Ended December 31, 2018 (1) First Quarter Second Quarter (2) Third Quarter (3) Fourth Quarter Total revenues $ 123,535 $ 119,711 $ 124,236 $ 127,199 Net income (loss) 23,685 24,290 (23,031 ) 20,619 Income (loss) attributable to Tanger Factory Outlet Centers, Inc. 22,838 22,969 (21,859 ) 19,707 Income (loss) available to common shareholders of Tanger Factory Outlet Centers, Inc. $ 22,575 $ 22,656 $ (22,172 ) $ 19,385 Basic earnings per common share : Net income (loss) $ 0.24 $ 0.24 $ (0.24 ) $ 0.21 Diluted earnings per common share: Net income (loss) $ 0.24 $ 0.24 $ (0.24 ) $ 0.21 (1) Quarterly amounts may not add to annual amounts due to the effect of rounding on a quarterly basis. (2) In the third quarter of 2018, net income includes a $49.7 million impairment charge related to our Jeffersonville, Ohio outlet center. (3) In the fourth quarter of 2018, net income includes a $7.2 million impairment charge, associated with our RioCan Canada unconsolidated joint ventures.

Schedule III

Schedule III	12 Months Ended
	Dec. 31, 2019
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]
Real Estate and Accumulated Depreciation	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, 2019 (in thousands) Description Initial cost to Company Costs Capitalized Subsequent to Acquisition (Improvements) (1) Gross Amount Carried at Close of Period December 31, 2019 (2) Outlet Center Name Location Encum-brances (3) Land Buildings, Improve-ments & Fixtures Land Buildings, Improve-ments & Fixtures Land Buildings, Improve-ments & Fixtures Total Accumulated Depreciation (1) Date of Construction or Acquisition Life Used to Compute Depreciation in Income Statement Atlantic City Atlantic City, NJ $ 32,531 $ — $ 125,988 $ — $ 9,451 $ — $ 135,439 $ 135,439 $ 36,927 2011 (5) (4) Blowing Rock Blowing Rock, NC — 1,963 9,424 — 10,469 1,963 19,893 21,856 11,195 1997 (5) (4) Branson Branson, MO — 4,407 25,040 396 25,097 4,803 50,137 54,940 32,789 1994 (4) Charleston Charleston, SC — 10,353 48,877 — 17,173 10,353 66,050 76,403 32,984 2006 (4) Commerce Commerce, GA — 1,262 14,046 707 36,896 1,969 50,942 52,911 34,814 1995 (4) Daytona Beach Daytona Beach, FL — 9,913 80,410 — 791 9,913 81,201 91,114 14,862 2016 (4) Deer Park Deer Park, NY — 82,413 173,044 — 17,076 82,413 190,120 272,533 46,951 2013 (5) (4) Foley Foley, AL — 4,400 82,410 693 42,259 5,093 124,669 129,762 62,616 2003 (5) (4) Fort Worth Fort Worth, TX — 11,157 87,025 — 159 11,157 87,184 98,341 10,335 2017 (4) Foxwoods Mashantucket, CT — — 130,941 — 1,281 — 132,222 132,222 25,949 2015 (4) Gonzales Gonzales, LA — 679 15,895 — 34,987 679 50,882 51,561 35,269 1992 (4) Grand Rapids Grand Rapids, MI — 8,180 75,420 — 2,439 8,180 77,859 86,039 18,246 2015 (4) Hershey Hershey, PA — 3,673 48,186 — 6,466 3,673 54,652 58,325 16,666 2011 (5) (4) Hilton Head I Bluffton, SC — 4,753 — — 33,684 4,753 33,684 38,437 15,697 2011 (4) Hilton Head II Bluffton, SC — 5,128 20,668 — 13,816 5,128 34,484 39,612 17,857 2003 (5) (4) Howell Howell, MI — 2,250 35,250 — 15,895 2,250 51,145 53,395 26,914 2002 (5) (4) Jeffersonville (6) Jeffersonville, OH — 2,752 111,276 (2,452 ) (101,576 ) 300 9,700 10,000 21 2011 (5) (4) Lancaster Lancaster, PA — 3,691 19,907 6,656 60,706 10,347 80,613 90,960 32,751 1994 (5) (4) Locust Grove Locust Grove, GA — 2,558 11,801 57 33,185 2,615 44,986 47,601 27,976 1994 (4) Mebane Mebane, NC — 8,821 53,362 — 5,663 8,821 59,025 67,846 28,524 2010 (4) Myrtle Beach Hwy 17 Myrtle Beach, SC — — 80,733 — 28,742 — 109,475 109,475 37,699 2009 (5) (4) Myrtle Beach Hwy 501 Myrtle Beach, SC — 8,781 56,798 — 42,046 8,781 98,844 107,625 47,849 2003 (5) (4) 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, 2019 (in thousands) Description Initial cost to Company Costs Capitalized Subsequent to Acquisition (Improvements) (1) Gross Amount Carried at Close of Period (2) Outlet Center Name Location Encum-brances (3) Land Buildings, Improve-ments & Fixtures Land Buildings, Improve-ments & Fixtures Land Buildings, Improve-ments & Fixtures Total Accumulated Depreciation (1) Date of Life Used to Compute Depreciation in Income Statement Pittsburgh Pittsburgh, PA — 5,528 91,288 3 13,909 5,531 105,197 110,728 58,455 2008 (4) Rehoboth Beach Rehoboth Beach, DE — 20,600 74,209 1,875 56,705 22,475 130,914 153,389 55,904 2003 (5) (4) Riverhead Riverhead, NY — — 36,374 6,152 134,514 6,152 170,888 177,040 100,686 1993 (4) San Marcos San Marcos, TX — 1,801 9,440 2,301 59,157 4,102 68,597 72,699 45,384 1993 (4) Savannah Pooler, GA — 8,432 167,780 — 3,870 8,432 171,650 180,082 21,432 2016 (5) (4) Sevierville Sevierville, TN — — 18,495 — 51,339 — 69,834 69,834 41,527 1997 (5) (4) Southaven Southaven, MS 51,272 14,959 60,263 — 675 14,959 60,938 75,897 16,047 2015 (4) Terrell Terrell, TX — 523 13,432 — 10,089 523 23,521 24,044 19,154 1994 (4) Tilton Tilton, NH — 1,800 24,838 29 14,274 1,829 39,112 40,941 19,468 2003 (5) (4) Westgate Glendale, AZ — 19,037 140,337 — 4,668 19,037 145,005 164,042 16,721 2016 (5) (4) Other Various — 306 1,495 — — 306 1,495 1,801 282 Various (4) $ 83,803 $ 250,120 $ 1,944,452 $ 16,417 $ 685,905 $ 266,537 $ 2,630,357 $ 2,896,894 $ 1,009,951 (1) Includes impairments. (2) Aggregate cost for federal income tax purposes is approximately $3.0 billion . (3) Including premiums and net of debt origination costs. (4) 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. (5) Represents year acquired. (6) Amounts net of $85.4 million impairment charges taken during 2019 and 2018 consisting of a write-off of approximately $2.5 million of land, $116.0 million of building and improvement cost and $33.1 million of accumulated depreciation. 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, 2019 (in thousands) The changes in total real estate for the years ended December 31, 2019 , 2018 and 2017 are as follows: 2019 2018 2017 Balance, beginning of year $ 3,046,179 $ 3,088,470 $ 2,965,907 Improvements 50,117 48,357 175,868 Impairment charge (40,539 ) (77,958 ) — Dispositions and other (158,863 ) (12,690 ) (53,305 ) Balance, end of year $ 2,896,894 $ 3,046,179 $ 3,088,470 The changes in accumulated depreciation for the years ended December 31, 2019 , 2018 and 2017 are as follows: 2019 2018 2017 Balance, beginning of year $ 981,305 $ 901,967 $ 814,583 Depreciation for the period 107,129 114,198 107,845 Impairment charge (3,028 ) (30,050 ) — Dispositions and other (75,455 ) (4,810 ) (20,461 ) Balance, end of year $ 1,009,951 $ 981,305 $ 901,967

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
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. The Company currently consolidates the Operating Partnership because it has (1) the power to direct the activities of the Operating Partnership that most significantly impact the Operating Partnership’s economic performance and (2) the obligation to absorb losses and the right to receive the residual returns of the Operating Partnership that could be potentially significant. We consolidate properties that are wholly-owned or properties where we own less than 100% but control such properties. Control is determined using an evaluation based on accounting standards related to the consolidation of voting interest entities and variable interest entities ("VIE"). For joint ventures that are determined to be a VIE, we consolidate the entity where we are deemed to be the primary beneficiary. Determination of the primary beneficiary is based on whether an entity has (1) the power to direct the activities of the VIE that most significantly impact the entity's economic performance, and (2) 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. Our determination of the primary beneficiary considers various factors including the form of our ownership interest, our representation in an entity's governance, the size of our investment, our ability to participate in policy making decisions and the rights of the other investors to participate in the decision making process to replace us as manager and or liquidate the venture, if applicable. As of December 31, 2019, we did not have a joint venture that was a VIE. Investments in real estate joint ventures that we do not control but may exercise significant influence on are accounted for using the equity method of accounting. These investments are recorded initially at cost and subsequently adjusted for our equity in the venture's net income or loss, cash contributions, distributions and other adjustments required under the equity method of accounting. For certain of these investments, we record our equity in the venture's net income or loss under the hypothetical liquidation at book value (“HLBV”) method of accounting due to the structures and the preferences we receive on the distributions from our joint ventures pursuant to the respective joint venture agreements for those joint ventures. Under this method, we recognize income and loss in each period based on the change in liquidation proceeds we would receive from a hypothetical liquidation of our investment based on depreciated book value. Therefore, income or loss may be allocated disproportionately as compared to the ownership percentages due to specified preferred return rate thresholds and may be more or less than actual cash distributions received and more or less than what we may receive in the event of an actual liquidation. In the event a basis difference is created between our underlying interest in the venture’s net assets and our initial investment, we amortize such amount over the estimated life of the venture as a component of equity in earnings of unconsolidated joint ventures. The carrying amount of our investments in the Charlotte, Columbus, Galveston/Houston and National Harbor joint ventures are less than zero because of financing or operating distributions that were greater than net income, as net income includes non-cash charges for depreciation and amortization.
Noncontrolling interests	Noncontrolling interests - In the Company's consolidated financial statements, the “Noncontrolling interests in Operating Partnership” reflects the Non-Company LP's percentage ownership of the Operating Partnership's units. "Noncontrolling interests in other consolidated partnerships" consist of outside equity interests in partnerships or joint ventures 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 or losses are allocated to the noncontrolling interests based on the allocation provisions within the partnership or joint venture agreements.
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, as well as 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 -
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 expensed when the project is no longer probable and, if significant, are recorded as abandoned pre-development costs in the consolidated statement of operations. We also capitalize other costs incurred for the construction and development of properties, including interest, real estate taxes and payroll 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 payroll and related costs capitalized for the construction and development of properties 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 for qualifying development activities until placed in service. Payroll and related costs and interest costs capitalized for the years ended December 31, 2019 , 2018 and 2017 were as follows (in thousands): 2019 2018 2017 Payroll and related costs capitalized $ 1,581 $ 1,521 $ 2,345 Interest costs capitalized $ 25 $ 93 $ 2,289 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, 2019 , 2018 and 2017 was as follows (in thousands): 2019 2018 2017 Depreciation expense related to rental property $ 107,129 $ 114,198 $ 107,845 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 are 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.
Cash, Cash Equivalents and Restricted Cash	Cash, Cash Equivalents and Restricted Cash - 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.
Deferred Charges	Deferred Charges - Deferred charges include 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 internal leasing costs for the years ended December 31, 2019 , 2018 and 2017 were as follows (in thousands): 2019 2018 2017 Deferred lease costs capitalized- payroll and related costs $ 679 $ 6,007 $ 6,098 Total deferred lease costs capitalized $ 5,142 $ 6,703 $ 6,584 Due to the adoption of Accounting Standards Codification Topic 842 "Leases" ("ASC 842") on January 1, 2019, only direct internal leasing costs are capitalized and indirect internal leasing costs previously capitalized are now expensed. 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 - 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 -
Impairment of Long-Lived Assets	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 than such carrying amount, recognize an impairment loss in an amount by which the carrying amount exceeds its fair value. The cash flow estimates used both for determining recoverability and estimating fair value are inherently judgmental and reflect current and projected trends in rental, occupancy, capitalization, and discount rates, and estimated holding periods for the applicable assets. The estimated fair value is based primarily on the income approach. The income approach involves discounting the estimated income stream and reversion (presumed sale) value of a property over an estimated holding period to a present value at a risk-adjusted rate. Discount rates and terminal capitalization rates utilized in this approach are derived from property-specific information, market transactions and other financial and industry data. During the fourth quarter of 2019 and third quarter 2018, we recorded a $37.6 million and $49.7 million , respectively, impairment charge in our consolidated statement of operations which equaled the excess of the carrying value of our Jeffersonville outlet center over its estimated fair value. See Note 11 for additional information on the fair market value calculation. We recognized no impairment losses for our consolidated properties during the year ended December 31, 2017 . See Note 6 for discussion of the impairment of our unconsolidated joint ventures at the Bromont, Quebec and Saint Sauveur, Quebec outlet centers during the years ended December 31, 2018 and 2017. In addition, based upon current market conditions, one of our outlet centers has an estimated fair value significantly less than its recorded carrying value of approximately $100.0 million . However, based on our current plan with respect to that outlet center, we believe that its carrying amount is recoverable and therefore no impairment charge was recorded. Accordingly, we will continue to monitor circumstances and events in future periods that could affect inputs such as the expected holding period, operating cash flow forecasts and capitalization rates, utilized to determine whether an impairment charge is necessary. As these inputs are difficult to predict and are subject to future events that may alter our assumptions, the future cash flows estimated by management in its impairment analysis may not be achieved, and actual losses or impairment may be realized in the future.
Rental Property Held For Sale	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 or if circumstances exist, 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 an other than temporary 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, estimated hold period, terminal capitalization rates, demand for space, competition for tenants, discount and capitalization rates, 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.
Sales of Real Estate	Sales of Real Estate - For sales of real estate where we have consideration to which we are entitled in exchange for transferring the real estate, the related assets and liabilities are removed from the balance sheet and the resultant gain or loss is recorded in the period the transaction closes. Any post sale involvement is accounted for as a separate performance obligations and when the separate performance obligations are satisfied, the sales price allocated to each is recognized. For transactions that do not meet the criteria for a sale, we evaluate the nature of the continuing involvement, including put and call provisions, if present, and account for the transaction as a financing arrangement, profit-sharing arrangement, leasing arrangement or other alternate method of accounting, rather than as a sale, based on the nature and extent of the continuing involvement. Some transactions may have numerous forms of continuing involvement. In those cases, we determine which method is most appropriate based on the substance of the transaction.
Discontinued Operations	Discontinued Operations - Properties that are sold or classified as held for sale are classified as discontinued operations provided that the disposal represents a strategic shift that has (or will have) a major effect on our operations and financial results (e.g., a disposal of a major geographical area, a major line of business, a major equity method investment or other major parts of an entity).
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 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.
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 2016 - 2019 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 United States Generally Accepted Accounting Principles ("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 it is not probable that the deferred tax assets will be realized.
Revenue Recognition	Revenue Recognition - As a lessor, substantially all of our revenues are earned from arrangements that are within the scope of ASC 842. We utilized the practical expedient in ASU 2018-11 to account for lease and non-lease components as a single component which resulted in all of our revenues associated with leases being recorded as rental revenues in the consolidated statements of operations. Base rentals are recognized on a straight-line basis over the term of the lease. Tenant expense reimbursements are recognized in the period the applicable expenses are incurred. As a result of combining all components of a lease, all fixed contractual payments, including consideration received from certain executory costs, are now recognized on a straight-line basis. Straight-line rent adjustments recorded as a receivable in other assets on the consolidated balance sheets were approximately $61.6 million and $57.5 million as of December 31, 2019 and 2018 , respectively. Common area maintenance expense reimbursements are based on the tenant's proportionate share of the allocable operating expenses for the property. 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. The majority of our 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. 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 and leasing fees received from unconsolidated affiliates are recognized as revenue when earned to the extent of the third party partners' ownership interest. Development and leasing fees 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 and marketing fees are recognized as revenue when earned. 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. Expense reimbursements from unconsolidated joint ventures are recognized in the period the applicable expenses are incurred. Uncollectible Tenant Revenues - Due to the adoption of ASC 842 effective January 1, 2019, uncollectible tenant revenues were recorded as a contra-revenue adjustment in 2019. If it is determined collection is not probable we record revenues on a cash basis. Previously in 2018 and 2017, these adjustments were recorded in general and administrative expense.
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 2019 , 2018 or 2017 .
Accounting for Equity-Based Compensation	Accounting for Equity-Based Compensation - We have a shareholder approved equity-based compensation plan, the Incentive Award Plan of Tanger Factory Outlet Centers, Inc. and Tanger Properties Limited Partnership (Amended and Restated as of April 4, 2014) (the "Plan"), which covers our independent directors, officers and our employees. We may issue non-qualified options and other equity-based awards under the Plan. We account for our equity-based compensation plan under the fair value provisions of the relevant accounting guidance and we estimate expected forfeitures in determining compensation cost.
Foreign Currency Translation	Foreign Currency Translation -
New Accounting Pronouncements	Recently adopted accounting standards (other than ASC 842 Leases, see Note 21) In October 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update (“ASU”) 2018-16, Inclusion of the Secured Overnight Financing Rate (“SOFR”) Overnight Index Swap (“OIS”) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes to Accounting Standards Codification 815. ASU 2018-16 expands the list of U.S. benchmark interest rates permitted in the application of hedge accounting by adding the OIS rate based on SOFR as an eligible benchmark interest rate. The mandatory effective date for calendar year-end public companies was January 1, 2019. The adoption of ASU 2018-16 as of January 1, 2019 did not have a material impact on our consolidated financial statements. In June 2018, the FASB issued ASU 2018-07, Improvements to Nonemployee Share-Based Payment Accounting. ASU 2018-07 amends prior employee share-based payment guidance to include nonemployee share-based payment transactions for acquiring services or property. This ASU now aligns the determination of the measurement date, the accounting for performance conditions, and the accounting for share-based payments after vesting in addition to other items. The provisions of ASU 2018-07 were effective for us as of January 1, 2019 using a modified transition method upon adoption, and early adoption was permitted. The adoption of ASU 2018-07 as of January 1, 2019 did not have a material impact on our consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815), Targeted Improvements to Accounting for Hedging Activities. The new guidance made more financial and nonfinancial hedging strategies eligible for hedge accounting. It also amended the presentation and disclosure requirements and changed how companies assess effectiveness. It is intended to more closely align hedge accounting with companies’ risk management strategies, simplify the application of hedge accounting, and increase transparency as to the scope and results of hedging programs. The adoption of ASU 2017-12 as of January 1, 2019 did not have a material impact on our consolidated financial statements. Recently issued accounting standards to be adopted In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement. ASU 2018-13 is intended to improve the effectiveness of disclosures required by entities regarding recurring and nonrecurring fair value measurements. ASU 2018-13 is effective for reporting periods beginning after December 15, 2019, with early adoption permitted. The adoption of ASU 2018-13 will not have a material impact on our consolidated financial statements.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Schedule of cost capitalized	Payroll and related costs and interest costs capitalized for the years ended December 31, 2019 , 2018 and 2017 were as follows (in thousands): 2019 2018 2017 Payroll and related costs capitalized $ 1,581 $ 1,521 $ 2,345 Interest costs capitalized $ 25 $ 93 $ 2,289
Schedule of depreciation expense	Depreciation expense related to rental property included in net income for each of the years ended December 31, 2019 , 2018 and 2017 was as follows (in thousands): 2019 2018 2017 Depreciation expense related to rental property $ 107,129 $ 114,198 $ 107,845
Schedule of Deferred Charges	Deferred lease costs capitalized, including amounts paid to third-party brokers and internal leasing costs for the years ended December 31, 2019 , 2018 and 2017 were as follows (in thousands): 2019 2018 2017 Deferred lease costs capitalized- payroll and related costs $ 679 $ 6,007 $ 6,098 Total deferred lease costs capitalized $ 5,142 $ 6,703 $ 6,584
Tax Treatment of Common Dividends Per Share for Federal Tax Purposes	Dividends per share for the years ended December 31, 2019 , 2018 and 2017 were taxable as follows: Common dividends per share: 2019 2018 2017 Ordinary income $ 1.3261 $ 1.3919 $ 1.1660 Capital gain — 0.0006 — Return of capital 0.0889 — 0.1865 $ 1.4150 $ 1.3925 $ 1.3525
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, 2019 , 2018 and 2017 (in thousands): 2019 2018 2017 Net income available to the Company's shareholders $ 87,855 $ 43,655 $ 68,002 Book/tax difference on: Depreciation and amortization 51,602 58,208 10,685 Sale of assets and interests in unconsolidated entities (41,138 ) (3,243 ) (8,718 ) Equity in earnings from unconsolidated joint ventures 1,447 18,444 15,662 Share-based payment compensation 8,246 6,269 221 Other differences 8,948 (630 ) (1,089 ) Taxable income available to common shareholders $ 116,960 $ 122,703 $ 84,763
Schedule of Supplemental Cash Flow Disclosures	Interest paid, net of interest capitalized was as follows for the years ended December 31, 2019 , 2018 and 2017 (in thousands): 2019 2018 2017 Interest paid, net of interest capitalized $ 57,237 $ 60,529 $ 56,730 Information related to non-cash assets and liabilities recorded as a result of the adoption of ASC 842 in 2019 was as follows (in thousands): 2019 Non-Cash operating lease right-of-use assets exchanged for operating lease liabilities $ 87,679 Non-Cash operating lease liabilities exchanged for operating right-of-use assets $ 92,354 December 31, 2019 , 2018 and 2017 (in thousands): 2019 2018 2017 Costs relating to construction included in accounts payable and accrued expenses $ 17,619 $ 15,772 $ 32,060

Disposition of Property (Tables

Disposition of Property (Tables)	12 Months Ended
	Dec. 31, 2019
Disposition of Properties [Abstract]
Disposition of Property	The following table sets forth the properties sold for the years ended 2019 and 2017 (in thousands). No properties were sold during 2018. Properties Locations Date Sold Square Feet Net Sales Proceeds Gain on Sale 2019 Dispositions: (1) Nags Head, Ocean City, Park City, and Williamsburg Nags Head, NC, Ocean City, MD, Park City, UT, and Williamsburg, IA March 2019 878 $ 128,248 $ 43,422 Land outparcels Savannah, GA and Seymour, IN July 2019 — $ 257 $ — 878 $ 128,505 $ 43,422 2017 Dispositions: (1) Westbrook Westbrook, CT May 2017 290 $ 39,213 $ 6,943 (1)

Investments in Unconsolidated_2

Investments in Unconsolidated Real Estate Joint Ventures (Tables)	12 Months Ended
	Dec. 31, 2019
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Equity Method Investments	The equity method of accounting is used to account for each of the individual joint ventures. We have an ownership interest in the following unconsolidated real estate joint ventures: As of December 31, 2019 Joint Venture Outlet Center Location Ownership % Square Feet (in 000's) Carrying Value of Investment (in millions) Total Joint Venture Debt, Net (in millions) (1) Investments included in investments in unconsolidated joint ventures: RioCan Canada Various 50.0 % 764 $ 94.7 $ 9.2 $ 94.7 Investments included in other liabilities: Columbus (2) Columbus, OH 50.0 % 355 $ (3.5 ) $ 85.0 Charlotte (2) Charlotte, NC 50.0 % 399 (13.0 ) 99.5 National Harbor (2) National Harbor, MD 50.0 % 341 (5.9 ) 94.4 Galveston/Houston (2) Texas City, TX 50.0 % 353 (19.7 ) 79.9 $ (42.1 ) As of December 31, 2018 Joint Venture Outlet Center Location Ownership % Square Feet (in 000's) Carrying Value of Investment (in millions) Total Joint Venture Debt, Net (in millions) (1) Investments included in investments in unconsolidated joint ventures: RioCan Canada Various 50.0 % 924 $ 96.0 $ 9.3 $ 96.0 Investments included in other liabilities: Columbus (2) Columbus, OH 50.0 % 355 $ (1.6 ) $ 84.7 Charlotte (2) Charlotte, NC 50.0 % 398 (10.8 ) 99.5 National Harbor (2) National Harbor, MD 50.0 % 341 (5.1 ) 94.5 Galveston/Houston (2) Texas City, TX 50.0 % 353 (15.0 ) 79.6 $ (32.5 ) (1) Net of debt origination costs and including premiums of $1.1 million and $1.4 million as of December 31, 2019 and 2018 , respectively. (2)
Schedule of fees we received for various services provided to our unconsolidated joint ventures	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, 2019 2018 2017 Fees: Management and marketing $ 2,308 $ 2,334 $ 2,310 Leasing and other fees 126 162 142 Expense reimbursements from unconsolidated joint ventures 2,985 2,499 1,212 Total Fees $ 5,419 $ 4,995 $ 3,664
Schedule of impairment charges	The table below summarizes the impairment charges taken during 2018 and 2017 (in thousands): Impairment Charge (1) Outlet Center Total Our Share 2018 Bromont and Saint Sauveur $ 14,359 $ 7,180 2017 Bromont and Saint Sauveur $ 18,042 $ 9,021 (1) The fair value was determined using an income approach considering the prevailing market income capitalization rates for similar assets.
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, 2019 and 2018 and for the years ended December 31, 2019 , 2018 and 2017 is as follows (in thousands): Condensed Combined Balance Sheets - Unconsolidated Joint Ventures 2019 2018 Assets Land $ 90,859 $ 91,443 Buildings, improvements and fixtures 477,061 469,834 Construction in progress 4,779 2,841 572,699 564,118 Accumulated depreciation (132,860 ) (113,713 ) Total rental property, net 439,839 450,405 Cash and cash equivalents 19,750 16,216 Deferred lease costs, net 6,772 8,437 Prepaids and other assets 17,789 25,648 Total assets $ 484,150 $ 500,706 Liabilities and Owners' Equity Mortgages payable, net $ 368,032 $ 367,865 Accounts payable and other liabilities 17,173 13,414 Total liabilities 385,205 381,279 Owners' equity 98,945 119,427 Total liabilities and owners' equity $ 484,150 $ 500,706
Summary Financial Information Of Unconsolidated JVs Statements of Operations	Condensed Combined Statements of Operations- Unconsolidated Joint Ventures: Year Ended December 31, 2019 2018 2017 Revenues $ 93,508 $ 94,509 $ 96,776 Expenses: Property operating 36,812 37,121 36,507 General and administrative 271 266 350 Impairment charges — 14,359 18,042 Depreciation and amortization 24,454 26,262 28,162 Total expenses 61,537 78,008 83,061 Other income (expense): Interest expense (16,234 ) (14,518 ) (10,365 ) Other non-operating income 507 234 71 Total other income (expense) $ (15,727 ) $ (14,284 ) $ (10,294 ) Net income $ 16,244 $ 2,217 $ 3,421 The Company and Operating Partnership's share of: Net income $ 7,839 $ 924 $ 1,937 Depreciation, amortization and asset impairments (real estate related) $ 12,512 $ 20,494 $ 22,878

Deferred Charges (Tables)

Deferred Charges (Tables)	12 Months Ended
	Dec. 31, 2019
Deferred Costs [Abstract]
Schedule of Deferred Charges	Deferred lease costs and other intangibles, net as of December 31, 2019 and 2018 consist of the following (in thousands): 2019 2018 Deferred lease costs $ 85,444 $ 87,590 Intangible assets: Above market leases 46,252 49,869 Lease in place value 58,195 64,152 Tenant relationships 37,221 40,690 Other intangibles 41,531 48,639 268,643 290,940 Accumulated amortization (171,931 ) (174,066 ) Deferred lease costs and other intangibles, net $ 96,712 $ 116,874
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 (1) Deferred Lease Costs and Other Intangibles (2) 2020 $ 410 $ 5,172 2021 299 4,611 2022 285 4,319 2023 368 3,668 2024 298 3,407 Total $ 1,660 $ 21,177 (1) These net amounts are recorded as a reduction of base rentals. (2)

Debt of the Company (Tables)

Debt of the Company (Tables)	12 Months Ended
	Dec. 31, 2019
Tanger Factory Outlet Centers, Inc. [Member]
Schedule of Debt	The Operating Partnership had the following amounts outstanding on the debt guaranteed by the Company as of December 31, 2019 and 2018 (in thousands): 2019 2018 Unsecured lines of credit $ — $ 145,100 Unsecured term loan $ 350,000 $ 350,000

Debt of the Operating Partner_2

Debt of the Operating Partnership (Tables) - Tanger Properties Limited Partnership [Member]	12 Months Ended
	Dec. 31, 2019
Schedule of Debt	The debt of the Operating Partnership as of December 31, 2019 and 2018 consisted of the following (in thousands): 2019 2018 Stated Interest Rate(s) Maturity Date Principal Book Value (1) Principal Book Value (1) Senior, unsecured notes: Senior notes 3.875 % December 2023 250,000 247,308 250,000 246,664 Senior notes 3.750 % December 2024 250,000 248,127 250,000 247,765 Senior notes 3.125 % September 2026 350,000 346,215 350,000 345,669 Senior notes 3.875 % July 2027 300,000 296,953 300,000 296,565 Mortgages payable: Atlantic City (2) (3) 5.14 % - 7.65% November 2021- December 2026 30,909 32,531 34,279 36,298 Southaven LIBOR + 1.80% April 2021 51,400 51,272 51,400 51,173 Unsecured term loan LIBOR + 0.90% April 2024 350,000 347,367 350,000 346,799 Unsecured lines of credit LIBOR + 0.875% October 2021 — — 145,100 141,985 $ 1,582,309 $ 1,569,773 $ 1,730,779 $ 1,712,918 (1) Includes premiums and net of debt discount and unamortized debt origination costs. Excludes $2.0 million of unamortized debt origination costs related to unsecured lines of credit as of December 31, 2019 recorded in prepaids and other assets in the Consolidated Balance Sheet. Unamortized debt origination costs were $11.2 million and $14.1 million as of December 31, 2019 and 2018 , respectively. Amortization of deferred debt origination costs included in interest expense for the years ended December 31, 2019 , 2018 and 2017 was $3.0 million , $3.1 million and $3.3 million , respectively. (2) The effective interest rate assigned during the purchase price allocation to this assumed mortgage during the acquisition in 2011 was 5.05% . (3) Principal and interest due monthly with remaining principal due at maturity.
Schedule of Maturities of Long-term Debt	Maturities of the existing long-term debt as of December 31, 2019 for the next five years and thereafter are as follows (in thousands): Calendar Year Amount 2020 $ 3,566 2021 57,193 2022 4,436 2023 254,768 2024 605,140 Thereafter 657,206 Subtotal 1,582,309 Net discount and debt origination costs (12,536 ) Total $ 1,569,773

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 and 2018 (notional amounts and fair values in thousands): Fair Value Effective Date Maturity Date Notional Amount Bank Pay Rate Company Average Fixed Pay Rate 2019 2018 Assets (Liabilities) (1) : April 13, 2016 January 1, 2021 $ 175,000 1 month LIBOR 1.03 % $ 1,018 $ 4,948 March 1, 2018 January 31, 2021 40,000 1 month LIBOR 2.47 % (376 ) (6 ) August 14, 2018 January 1, 2021 150,000 1 month LIBOR 2.20 % (896 ) 807 July 1, 2019 February 1, 2024 25,000 1 month LIBOR 1.75 % (170 ) — Total $ 390,000 $ (424 ) $ 5,749 (1) Asset balances are recorded in prepaids and other assets on the consolidated balance sheets and liabilities are recorded in other liabilities on the consolidated balance sheets.
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, 2019 , 2018 and 2017 , respectively (in thousands): 2019 2018 2017 Interest Rate Swaps (Effective Portion): Amount of gain (loss) recognized in OCI $ (6,174 ) $ 405 $ 1,351

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019: Asset: Interest rate swaps (prepaids and other assets) $ 1,018 $ — $ 1,018 $ — Total assets $ 1,018 $ — $ 1,018 $ — Liabilities: Interest rate swaps (other liabilities) $ 1,442 $ — $ 1,442 $ — Total liabilities $ 1,442 $ — $ 1,442 $ — 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, 2018: Assets: Interest rate swaps (prepaids and other assets) $ 5,755 $ — $ 5,755 $ — Total assets $ 5,755 $ — $ 5,755 $ — Liabilities: Interest rate swaps (other liabilities) $ 6 $ — $ 6 $ — Total liabilities $ 6 $ — $ 6 $ —
Fair Value Measurements, Nonrecurring	The following table sets forth our assets that are measured at fair value on a nonrecurring basis 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, 2019: Asset: Long-lived assets $ 10,000 $ — $ — $ 10,000 Fair value as of September 30, 2018: Asset: Long-lived assets $ 50,000 $ — $ — $ 50,000
Fair Value Measurement Inputs and Valuation Techniques	The table below summarizes the terminal capitalization rate and discount rate used: December 31, 2019 September 30, 2018 Terminal capitalization rate 12 % 10 % Discount rate 13 % 10 %
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments	The estimated fair value and recorded value of our debt as of December 31, 2019 and 2018 were as follows (in thousands): 2019 2018 Level 1 Quoted Prices in Active Markets for Identical Assets or Liabilities $ — $ — Level 2 Significant Observable Inputs 1,169,481 1,085,138 Level 3 Significant Unobservable Inputs 434,333 583,337 Total fair value of debt $ 1,603,814 $ 1,668,475 Recorded value of debt $ 1,569,773 $ 1,712,918

Shareholders' Equity of the C_2

Shareholders' Equity of the Company (Tables)	12 Months Ended
	Dec. 31, 2019
Share repurchase program	Shares repurchased during the years ended December 31, 2019 , 2018 and 2017 were as follows: Year Ended December 31, 2019 2018 2017 Total number of shares purchased 1,209,328 919,249 1,911,585 Average price paid per share $ 16.52 $ 21.74 $ 25.80 Total price paid exclusive of commissions and related fees (in thousands) $ 19,976 $ 19,980 $ 49,324
Tanger Factory Outlet Centers, Inc. [Member]
Schedule of Shareholders equity of the Company	The following table sets forth the number of Class A common limited partnership units exchanged for an equal number of common shares for the years ended December 31, 2019 , 2018 and 2017 : 2019 2018 2017 Exchange of Class A limited partnership units 49,511 34,749 32,348

Partners' Equity of the Opera_2

Partners' Equity of the Operating Partnership (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 , 2018 and 2017 : Limited Partnership Units General partnership units Class A Class B Total Balance December 31, 2016 1,000,000 5,027,781 95,095,891 100,123,672 Units withheld for employee income taxes — — (69,886 ) (69,886 ) Exchange of Class A limited partnership units — (32,348 ) 32,348 — Grant of restricted common share awards by the Company, net of forfeitures — — 411,968 411,968 Repurchase of units — — (1,911,585 ) (1,911,585 ) Units issued upon exercise of options — — 1,800 1,800 Balance December 31, 2017 1,000,000 4,995,433 93,560,536 98,555,969 Units withheld for employee income taxes — — (89,437 ) (89,437 ) Exchange of Class A limited partnership units — (34,749 ) 34,749 — Grant of restricted common share awards by the Company — — 355,184 355,184 Repurchase of units — — (919,249 ) (919,249 ) Balance December 31, 2018 1,000,000 4,960,684 92,941,783 97,902,467 Units withheld for employee income taxes — — (131,873 ) (131,873 ) Exchange of Class A limited partnership units — (49,511 ) 49,511 — Grant of restricted common share awards by the Company — — 242,167 242,167 Repurchase of units — — (1,209,328 ) (1,209,328 ) Balance December 31, 2019 1,000,000 4,911,173 91,892,260 96,803,433

Noncontrolling Interests (Table

Noncontrolling Interests (Tables)	12 Months Ended
	Dec. 31, 2019
Noncontrolling Interest [Abstract]
Changes in the Company's ownership interests in the subsidiaries impacted consolidated equity	The changes in the Company's ownership interests in the subsidiaries impacted consolidated equity during the periods shown as follows (in thousands): 2019 2018 Net income attributable to Tanger Factory Outlet Centers, Inc. $ 87,855 $ 43,655 Increase in Tanger Factory Outlet Centers, Inc. paid-in-capital adjustments to noncontrolling interests 200 322 Changes from net income attributable to Tanger Factory Outlet Centers, Inc. and transfers from noncontrolling interest $ 88,055 $ 43,977

Earnings Per Share of the Com_2

Earnings Per Share of the Company (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 , 2018 and 2017 (in thousands, except per share amounts): 2019 2018 2017 Numerator Net income attributable to Tanger Factory Outlet Centers, Inc. $ 87,855 $ 43,655 $ 68,002 Less allocation of earnings to participating securities (1,336 ) (1,211 ) (1,209 ) Net income available to common shareholders of Tanger Factory Outlet Centers, Inc. $ 86,519 $ 42,444 $ 66,793 Denominator Basic weighted average common shares 92,808 93,309 94,506 Effect of outstanding options and certain restricted common shares — 1 16 Diluted weighted average common shares 92,808 93,310 94,522 Basic earnings per common share: Net income $ 0.93 $ 0.45 $ 0.71 Diluted earnings per common share: Net income $ 0.93 $ 0.45 $ 0.71

Earnings Per Unit of the Oper_2

Earnings Per Unit of the Operating Partnership (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 , 2018 and 2017 (in thousands, except per unit amounts): 2019 2018 2017 Numerator Net income attributable to partners of the Operating Partnership $ 92,533 $ 45,984 $ 71,611 Allocation of earnings to participating securities (1,336 ) (1,211 ) (1,209 ) Net income available to common unitholders of the Operating Partnership $ 91,197 $ 44,773 $ 70,402 Denominator Basic weighted average common units 97,766 98,302 99,533 Effect of outstanding options and certain restricted common units — 1 16 Diluted weighted average common units 97,766 98,303 99,549 Basic earnings per common unit: Net income $ 0.93 $ 0.45 $ 0.71 Diluted earnings per common unit: Net income $ 0.93 $ 0.45 $ 0.71

Equity-Based Compensation (Tabl

Equity-Based Compensation (Tables) - Tanger Factory Outlet Centers, Inc. [Member]	12 Months Ended
	Dec. 31, 2019
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs	We recorded equity-based compensation expense in general and administrative expenses in the consolidated statements of operations for the years ended December 31, 2019 , 2018 and 2017 , respectively, as follows (in thousands): 2019 2018 2017 Restricted common shares $ 12,036 $ 9,870 $ 9,395 Notional unit performance awards 5,918 4,356 3,913 Options 166 443 277 Total equity-based compensation $ 18,120 $ 14,669 $ 13,585 Equity-based compensation expense capitalized as a part of rental property and deferred lease costs were as follows (in thousands): 2019 2018 2017 Equity-based compensation expense capitalized $ 384 $ 1,131 $ 1,044
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	The following table summarizes information related to unvested restricted common shares and restricted share units outstanding for the years ended December 31, 2019 , 2018 , and 2017 : Unvested Restricted Common Shares and Restricted Share Units Number of shares and units Weighted average grant date fair value Outstanding at December 31, 2016 879,268 $ 31.09 Granted 253,431 33.07 Vested (368,043 ) 29.87 Forfeited (14,750 ) 34.39 Outstanding at December 31, 2017 749,906 $ 32.30 Granted (1) 407,156 21.13 Vested (314,982 ) 31.43 Forfeited — — Outstanding at December 31, 2018 842,080 $ 27.56 Granted (2) 308,623 21.05 Vested (469,178 ) 27.73 Forfeited — — Outstanding at December 31, 2019 681,525 $ 23.92 (1) Includes 44,452 restricted share units. (2) Includes 51,217 restricted share units.
Schedule of Nonvested Performance-based Units Activity	The following table sets forth OPP performance targets and other relevant information about each plan: 2019 OPP (1) 2018 OPP (1) 2017 OPP (2) 2016 OPP (2),(3) 2015 OPP (2),(4) Performance targets Absolute portion of award: Percent of total award 33% 33% 50% 50% 60% Absolute total shareholder return range 19 % - 30% 19 % - 30% 18 % - 35% 18 % - 35% 25 % - 35% Percentage of units to be earned 20 % - 100% 20 % - 100% 20 % - 100% 20 % - 100% 33 % - 100% Relative portion of award: Percent of total award 67% 67% 50% 50% 40% Percentile rank of peer group range 30 th - 80th 30 th - 80th 40 th - 70th 40 th - 70th 50 th - 70th Percentage of units to be earned 20 % - 100% 20 % - 100% 20 % - 100% 20 % - 100% 33 % - 100% Maximum number of restricted common shares that may be earned 531,827 409,972 296,400 321,900 306,600 Grant date fair value per share $ 12.09 $ 12.42 $ 16.60 $ 15.10 $ 15.85 (1) The number of restricted common shares received under the 2019 and 2018 OPP will be determined on a pro-rata basis by linear interpolation between total shareholder return thresholds, both for absolute total shareholder return and for relative total shareholder return amongst the Company's peer group. The peer group is based on companies included in the FTSE NAREIT Retail Index. (2) The performance shares for the 2017 OPP will convert on a pro-rata basis by linear interpolation between share price appreciation thresholds, both for absolute total shareholder return and for relative total shareholder return. The share price for the purposes of calculation of share price appreciation will be adjusted on a penny-for-penny basis with respect to any dividend payments made during the measurement period. The peer group is based on companies included in the SNL Equity REIT index. (3) On February 15, 2019, the measurement period for the 2016 OPP expired and neither of the Company’s absolute nor relative total shareholder returns were sufficient for employees to earn, and therefore become eligible to vest in, any restricted shares under the plan. Accordingly, all 2016 OPP performance awards were automatically forfeited. (4) On December 31, 2017, the measurement period for the 2015 OPP expired and neither of the Company’s absolute nor relative total shareholder returns were sufficient for employees to earn, and therefore become eligible to vest in, any restricted shares under the plan. Accordingly, all 2015 OPP performance awards were automatically forfeited.
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	The fair values of the OPP awards granted during the years ended December 31, 2019 , 2018 , and 2017 were determined at the grant dates using a Monte Carlo simulation pricing model and the following assumptions: 2019 2018 2017 Risk free interest rate (1) 2.55 % 2.40 % 1.52 % Expected dividend yield (2) 5.3 % 4.8 % 3.4 % Expected volatility (3) 24 % 27 % 19 % (1) Represents the interest rate as of the grant date on U.S. treasury bonds having the same life as the estimated life of the restricted unit grants. (2) The dividend yield is calculated utilizing the dividends paid for the previous five-year period. (3) Based on a mix of historical and implied volatility for our common shares and the common shares of our peer index companies over the measurement period.
Schedule of Other Share-based Compensation, Activity	The following table sets forth OPP activity for the years ended December 31, 2019 , 2018 , and 2017 : Unvested OPP Awards Number of units Weighted average grant date fair value Outstanding as of December 31, 2016 759,176 $ 15.36 Awarded 296,400 16.60 Earned (1) (184,455 ) 14.71 Forfeited (267,710 ) 15.84 Outstanding as of December 31, 2017 603,411 $ 15.83 Awarded 409,972 12.42 Earned — — Forfeited — — Outstanding as of December 31, 2018 1,013,383 $ 14.44 Awarded 531,827 12.09 Earned — — Forfeited (421,306 ) 14.36 Outstanding as of December 31, 2019 1,123,904 $ 13.36 (1) Represents the units under the 2014 OPP that are no longer outstanding and have been settled in restricted common shares.
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range	Options outstanding at December 31, 2019 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 $ 21.94 298,500 $ 21.94 8.21 59,700 $ 21.94 $ 26.06 61,700 26.06 1.15 61,700 26.06 $ 32.02 163,100 32.02 4.01 163,100 32.02 523,300 $ 25.57 6.06 284,500 $ 28.61
Schedule of Share-based Compensation, Stock Options, Activity	A summary of option activity under the Plan for the years ended December 31, 2019 , 2018 , and 2017 (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, 2016 242,200 $ 30.46 Granted — — Exercised (1,800 ) 29.70 Forfeited (9,200 ) 31.83 Outstanding as of December 31, 2017 231,200 $ 30.42 5.24 $ 28 Granted 331,000 21.94 Exercised — — Forfeited (27,700 ) 22.62 Outstanding as of December 31, 2018 534,500 $ 25.56 7.08 $ — Granted — — Exercised — — Forfeited (11,200 ) 25.27 Outstanding as of December 31, 2019 523,300 $ 25.57 6.06 $ — Vested and Expected to Vest as of December 31, 2019 498,008 $ 25.75 5.97 $ — Exercisable as of December 31, 2019 284,500 $ 28.61 4.27 $ —

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss of the Company (Tables)	12 Months Ended
	Dec. 31, 2019
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 (loss) for the years ended December 31, 2019 , 2018 , and 2017 (in thousands): Tanger Factory Outlet Centers, Inc. Accumulated Other Comprehensive Income (Loss) Noncontrolling Interest in Operating Partnership Accumulated Other Comprehensive (Income) Loss Foreign currency Cash flow hedges Total Foreign currency Cash flow hedges Total Balance December 31, 2016 $ (32,087 ) $ 3,792 $ (28,295 ) $ (1,740 ) $ 201 $ (1,539 ) Other comprehensive income before reclassifications 7,727 1,020 8,747 411 55 466 Reclassification out of accumulated other comprehensive income into interest expense — 263 263 — 13 13 Balance December 31, 2017 (24,360 ) 5,075 (19,285 ) (1,329 ) 269 (1,060 ) Other comprehensive income (loss) before reclassifications (8,250 ) 2,335 (5,915 ) (441 ) 126 (315 ) Reclassification out of accumulated other comprehensive income into interest expense — (1,951 ) (1,951 ) — (105 ) (105 ) Balance December 31, 2018 (32,610 ) 5,459 (27,151 ) (1,770 ) 290 (1,480 ) Other comprehensive income (loss) before reclassifications 4,062 (3,755 ) 307 217 (202 ) 15 Reclassification out of accumulated other comprehensive income (loss) into other income (expense) for foreign currency and interest expense for cash flow hedges 3,454 (2,105 ) 1,349 184 (112 ) 72 Balance December 31, 2019 $ (25,094 ) $ (401 ) $ (25,495 ) $ (1,369 ) $ (24 ) $ (1,393 )

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Loss of the Operating Partnership (Tables)	12 Months Ended
	Dec. 31, 2019
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 (loss) for the years ended December 31, 2019 , 2018 , and 2017 (in thousands): Foreign currency Cash flow hedges Accumulated other comprehensive income (loss) Balance December 31, 2016 $ (33,827 ) $ 3,993 $ (29,834 ) Other comprehensive income before reclassifications 8,138 1,075 9,213 Reclassification out of accumulated other comprehensive income into interest expense — 276 276 Balance December 31, 2017 (25,689 ) 5,344 (20,345 ) Other comprehensive income (loss) before reclassifications (8,691 ) 2,461 (6,230 ) Reclassification out of accumulated other comprehensive income into interest expense — (2,056 ) (2,056 ) Balance December 31, 2018 (34,380 ) 5,749 (28,631 ) Other comprehensive income (loss) before reclassifications 4,279 (3,957 ) 322 Reclassification out of accumulated other comprehensive income (loss) into other income (expense) for foreign currency and interest expense for cash flow hedges 3,638 (2,217 ) 1,421 Balance December 31, 2019 $ (26,463 ) $ (425 ) $ (26,888 )

Supplementary Income Statemen_2

Supplementary Income Statement Information (Tables)	12 Months Ended
	Dec. 31, 2019
Supplementary Income Statement Information [Abstract]
Schedule of Supplementary Income Statement Information	The following amounts are included in property operating expenses for the years ended December 31, 2019 , 2018 and 2017 (in thousands): 2019 2018 2017 Advertising and promotion $ 26,022 $ 27,066 $ 29,046 Common area maintenance 70,472 73,367 71,195 Real estate taxes 33,430 32,836 30,695 Other operating expenses 27,810 27,188 24,299 $ 157,734 $ 160,457 $ 155,235

Leasing Agreements (Tables)

Leasing Agreements (Tables)	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Components of rental revenues	For the year ended December 31, 2019 , the components of rental revenues are as follows (in thousands): 2019 Rental revenues - fixed $ 360,513 Rental revenues - variable (1) 103,433 Rental revenues $ 463,946 (1) Primarily includes rents based on a percentage of tenant sales volume and reimbursable expenses such as common area expenses, utilities, insurance and real estate taxes.
Future minimum lease receipts under non-cancelable operating leases	Future minimum lease receipts under non-cancelable operating leases as of December 31, 2019 , excluding the effect of straight-line rent and variable rentals, are as follows (in thousands): 2020 $ 316,397 2021 282,225 2022 247,874 2023 213,932 2024 179,081 Thereafter 349,234 $ 1,588,743
Future minimum lease receipts under non-cancelable operating leases	Future minimum lease receipts under non-cancelable operating leases as of December 31, 2018, excluding the effect of straight-line rent and variable rentals, are as follows (in thousands): 2019 $ 285,343 2020 265,361 2021 229,553 2022 195,808 2023 164,845 Thereafter 364,844 $ 1,505,754
Components of lease costs	For the year ended December 31, 2019 , the components of lease costs are as follows (in thousands): 2019 Operating lease costs $ 5,519 Short-term lease costs 2,297 Variable lease costs (1) 231 Total lease costs $ 8,047 (1) Our variable lease costs relate to our ground leases where increases in payments are based on center financial performance.
Lease term and discount rates	The lease term and discount rates are as follows: 2019 Weighted - average remaining lease term (years) 50 Weighted - average discount rate 5.0 %
Supplemental cash flow information	Cash flow information related to leases for the year ended December 31, 2019 was as follows (in thousands): December 31, 2019 Operating cash outflows related to operating leases $ 5,569
Maturity of lease liabilities	Maturities of lease liabilities as of December 31, 2019 for the next five years and thereafter are as follows (in thousands): 2020 $ 5,568 2021 5,613 2022 5,669 2023 5,709 2024 5,765 Thereafter 226,876 Total lease payments $ 255,200 Less imputed interest 163,963 Present value of lease liabilities $ 91,237
Minimum lease payments	For operating leases as of December 31, 2018, minimum lease payments for the next five years and thereafter are as follows (in thousands): 2019 $ 7,526 2020 7,311 2021 7,140 2022 7,127 2023 7,167 Thereafter 258,438 Total minimum payment $ 294,709

Quarterly Financial Data of t_2

Quarterly Financial Data of the Company (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 and 2018 (unaudited and in thousands, except per common share data) (1) . This information is not required for the Operating Partnership: Year Ended December 31, 2019 (1) First Quarter (2) Second Quarter Third Quarter Fourth Quarter (3) Total revenues $ 123,155 $ 115,707 $ 118,994 $ 120,492 Net income (loss) 65,841 14,457 24,809 (12,379 ) Income (loss) attributable to Tanger Factory Outlet Centers, Inc. 62,331 13,727 23,546 (11,749 ) Income (loss) available to common shareholders of Tanger Factory Outlet Centers, Inc. $ 61,720 $ 13,613 $ 23,241 $ (12,055 ) Basic earnings per common share: Net income (loss) $ 0.66 $ 0.15 $ 0.25 $ (0.13 ) Diluted earnings per common share: Net income (loss) $ 0.66 $ 0.15 $ 0.25 $ (0.13 ) (1) Quarterly amounts may not add to annual amounts due to the effect of rounding on a quarterly basis. (2) In the first quarter of 2019, net income includes a $43.4 million gain recorded on the sale of our Nags Head, Ocean City, Park City, and Williamsburg outlet centers. (3) In the fourth quarter of 2019, net income includes a $37.6 impairment charge related to our Jeffersonville, Ohio outlet center. Year Ended December 31, 2018 (1) First Quarter Second Quarter (2) Third Quarter (3) Fourth Quarter Total revenues $ 123,535 $ 119,711 $ 124,236 $ 127,199 Net income (loss) 23,685 24,290 (23,031 ) 20,619 Income (loss) attributable to Tanger Factory Outlet Centers, Inc. 22,838 22,969 (21,859 ) 19,707 Income (loss) available to common shareholders of Tanger Factory Outlet Centers, Inc. $ 22,575 $ 22,656 $ (22,172 ) $ 19,385 Basic earnings per common share : Net income (loss) $ 0.24 $ 0.24 $ (0.24 ) $ 0.21 Diluted earnings per common share: Net income (loss) $ 0.24 $ 0.24 $ (0.24 ) $ 0.21 (1) Quarterly amounts may not add to annual amounts due to the effect of rounding on a quarterly basis. (2) In the third quarter of 2018, net income includes a $49.7 million impairment charge related to our Jeffersonville, Ohio outlet center. (3) In the fourth quarter of 2018, net income includes a $7.2 million impairment charge, associated with our RioCan Canada unconsolidated joint ventures.

Organization of the Company (De

Organization of the Company (Details) ft² in Millions	Dec. 31, 2019sharesft²OutletCenterstore_brandstoresubsidiary	Dec. 31, 2018OutletCenterstore
Entity Information [Line Items]
Number of operating partnership units owned by wholly-owned subsidiaries | shares	92,892,260
Exchange Ratio of Partnership Units for Common Shares	1
Consolidated Properties [Member]
Entity Information [Line Items]
Number of Outlet Centers	32	36
Total gross leaseable area | ft²	12
Outlet center occupancy percentage	97.00%
Number of stores | store	2,400	2,600
Number of store brands | store_brand	400
Unconsolidated Properties [Member]
Entity Information [Line Items]
Number of Outlet Centers	7
Total gross leaseable area | ft²	2.2
CANADA | Unconsolidated Properties [Member]
Entity Information [Line Items]
Number of Outlet Centers	3
Tanger Factory Outlet Centers, Inc. [Member]
Entity Information [Line Items]
Number Of Wholly Owned Subsidiaries | subsidiary	2
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 | shares	4,911,173

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Rental Property (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Payroll and related costs capitalized	$ 1,581	$ 1,521	$ 2,345
Interest costs capitalized	$ 25	93	2,289
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
Depreciation expense related to rental property	$ 107,129	$ 114,198	$ 107,845
Purchase price allocated to assets, useful life, maximum	33 years

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Deferred Charges (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Deferred lease costs capitalized-payroll and related costs	$ 679	$ 6,007	$ 6,098
Total deferred lease costs capitalized	$ 5,142	$ 6,703	$ 6,584

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Impairment of Long-Lived Assets (Details) - USD ($)	3 Months Ended		12 Months Ended	24 Months Ended
	Dec. 31, 2019	Sep. 30, 2018	Dec. 31, 2017	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Impairment charges			$ 0
Property carrying value	$ 100,000,000			$ 100,000,000
Jeffersonville [Member]
Property, Plant and Equipment [Line Items]
Impairment charges	$ 37,600,000	$ 49,700,000		$ 85,400,000

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Income Taxes (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
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)	$ 1.415	$ 1.3925	$ 1.3525
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)	1.3261	1.3919	1.1660
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	0.0006	0
Tanger Factory Outlet Centers, Inc. [Member] | Return Of Capital [Member]
Schedule of Common Dividends Per Share [Line Items]
Common dividends per share (in dollars per share)	$ 0.0889	$ 0	$ 0.1865

Summary of Significant Accoun_8

Summary of Significant Accounting Policies - Income Taxes - Schedule of Taxable Income Available to Common Shareholders (Details) - Tanger Factory Outlet Centers, Inc. [Member] - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Schedule of Taxable Income Available to Common Shareholders [Line Items]
Net income available to the Company's shareholders	$ (11,749)	$ 23,546	$ 13,727	$ 62,331	$ 19,707	$ (21,859)	$ 22,969	$ 22,838	$ 87,855	$ 43,655	$ 68,002
Depreciation and amortization									51,602	58,208	10,685
Sale of assets and interests in unconsolidated entities									(41,138)	(3,243)	(8,718)
Equity in earnings from unconsolidated joint ventures									1,447	18,444	15,662
Share-based payment compensation									8,246	6,269	221
Other differences									8,948	(630)	(1,089)
Taxable income available to common shareholders									$ 116,960	$ 122,703	$ 84,763

Summary of Significant Accoun_9

Summary of Significant Accounting Policies - Revenue Recognition (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Straight-line rent adjustments recorded as a receivable	$ 61.6	$ 57.5

Summary of Significant Accou_10

Summary of Significant Accounting Policies - Supplemental Cash Flow Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Costs relating to construction included in accounts payable and accrued expenses	$ 17,619,000	$ 15,772,000	$ 32,060,000
Interest paid, net of interest capitalized	57,237,000	$ 60,529,000	$ 56,730,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	87,679,000
Non-Cash operating lease liabilities exchanged for operating right-of-use assets	92,354,000
Accrued straight-line rent liability	5,000,000
Prepaid rent	$ 307,000

Acquisition of Rental Property

Acquisition of Rental Property - Narrative (Details) - Foxwoods [Member]	1 Months Ended
	Nov. 30, 2017USD ($)
Acquistion of Rental Property [Line Items]
Payments to Acquire Additional Interest in Subsidiaries	$ 0
Economic interest percentage in joint venture	100.00%

Disposition of Property (Detail

Disposition of Property (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)ft²	Dec. 31, 2017USD ($)ft²
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²		878,000
Net Sales Price		$ 128,505,000
Gain on sale of assets		$ 43,422,000
Nags Head, Ocean City, Park City & Williamsburg [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²		878,000
Net Sales Price		$ 128,248,000
Gain on sale of assets	$ 43,400,000	$ 43,422,000
Land outparcel [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²		0
Net Sales Price		$ 257,000
Gain on sale of assets		$ 0
Westbrook [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²			290,000
Net Sales Price			$ 39,213,000
Gain on sale of assets			$ 6,943,000

Development of Consolidated R_2

Development of Consolidated Rental Properties - Narrative (Details) - ft² ft² in Thousands	Dec. 31, 2019	Oct. 31, 2017	Sep. 30, 2017
Development of Consolidated Rental Properties [Line Items]
Square Feet	878
Fort Worth [Member]
Development of Consolidated Rental Properties [Line Items]
Square Feet		352
Lancaster [Member]
Development of Consolidated Rental Properties [Line Items]
Square Feet			123

Investments in Unconsolidated_3

Investments in Unconsolidated Real Estate Joint Ventures - Unconsolidated Real Estate Joint Ventures (Details) ft² in Thousands, $ in Thousands	Dec. 31, 2019USD ($)ft²	Dec. 31, 2018USD ($)ft²	Jun. 30, 2016ft²	Jul. 31, 2014ft²	Nov. 30, 2013ft²	Oct. 31, 2012ft²
Schedule of Equity Method Investments [Line Items]
Square Feet | ft²	878
RioCan Canada [Member]
Schedule of Equity Method Investments [Line Items]
Ownership %	50.00%	50.00%
Square Feet | ft²	764	924
Investments included in investments in unconsolidated joint ventures	$ 94,700	$ 96,000
Columbus [Member]
Schedule of Equity Method Investments [Line Items]
Ownership %	50.00%	50.00%
Square Feet | ft²	355	355	355
Investments included in other liabilities	$ (3,500)	$ (1,600)
Charlotte [Member]
Schedule of Equity Method Investments [Line Items]
Ownership %	50.00%	50.00%
Square Feet | ft²	399	398		398
Investments included in other liabilities	$ (13,000)	$ (10,800)
National Harbor [Member]
Schedule of Equity Method Investments [Line Items]
Ownership %	50.00%	50.00%
Square Feet | ft²	341	341			341
Investments included in other liabilities	$ (5,900)	$ (5,100)
Galveston/Houston [Member]
Schedule of Equity Method Investments [Line Items]
Ownership %	50.00%	50.00%
Square Feet | ft²	353	353				353
Investments included in other liabilities	$ (19,700)	$ (15,000)
Columbus Charlotte National Harbor and Galveston/Houston [Member]
Schedule of Equity Method Investments [Line Items]
Investments included in other liabilities	(42,100)	(32,500)
Unconsolidated Properties [Member]
Schedule of Equity Method Investments [Line Items]
Total Joint Venture Debt, Net	368,032	367,865
Unconsolidated Properties [Member] | RioCan Canada [Member]
Schedule of Equity Method Investments [Line Items]
Total Joint Venture Debt, Net	9,200	9,300
Unconsolidated Properties [Member] | Columbus [Member]
Schedule of Equity Method Investments [Line Items]
Total Joint Venture Debt, Net	85,000	84,700
Unconsolidated Properties [Member] | Charlotte [Member]
Schedule of Equity Method Investments [Line Items]
Total Joint Venture Debt, Net	99,500	99,500
Unconsolidated Properties [Member] | National Harbor [Member]
Schedule of Equity Method Investments [Line Items]
Total Joint Venture Debt, Net	94,400	94,500
Unconsolidated Properties [Member] | Galveston/Houston [Member]
Schedule of Equity Method Investments [Line Items]
Total Joint Venture Debt, Net	79,900	79,600
Mortgages [Member] | Unconsolidated Properties [Member]
Schedule of Equity Method Investments [Line Items]
Debt origination costs and premiums	$ 1,100	$ 1,400

Investments in Unconsolidated_4

Investments in Unconsolidated Real Estate Joint Ventures - Management, Leasing and Marketing Fees (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Schedule of Equity Method Investments [Line Items]
Management, leasing and other services	$ 5,419	$ 4,995	$ 3,664
Management and Marketing Fee [Member]
Schedule of Equity Method Investments [Line Items]
Management, leasing and other services	2,308	2,334	2,310
Leasing and other fees [Member]
Schedule of Equity Method Investments [Line Items]
Management, leasing and other services	126	162	142
Expense reimbursements from joint ventures [Member]
Schedule of Equity Method Investments [Line Items]
Management, leasing and other services	$ 2,985	$ 2,499	$ 1,212

Investments in Unconsolidated_5

Investments in Unconsolidated Real Estate Joint Ventures Investments in Unconsolidated Real Estate Joint Ventures - Impairment (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Schedule of Equity Method Investments [Line Items]
Impairment charges				$ 0
Unconsolidated Properties [Member]
Schedule of Equity Method Investments [Line Items]
Impairment charges		$ 0	$ 14,359,000	18,042,000
Unconsolidated Properties [Member] | Bromont and Les Factories St. Sauveur [Member]
Schedule of Equity Method Investments [Line Items]
Impairment charges			14,359,000	18,042,000
Company's share of impairment charge	$ 7,200,000		$ 7,180,000	$ 9,021,000

Investments in Unconsolidated_6

Investments in Unconsolidated Real Estate Joint Ventures - Summary Balance Sheets for Unconsolidated Joint Ventures (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets [Abstract]
Total rental property, net	$ 100,000
Unconsolidated Properties [Member]
Assets [Abstract]
Land	90,859	$ 91,443
Buildings, improvements and fixtures	477,061	469,834
Construction in progress	4,779	2,841
Total rental property, at cost	572,699	564,118
Accumulated depreciation	(132,860)	(113,713)
Total rental property, net	439,839	450,405
Cash and cash equivalents	19,750	16,216
Deferred lease costs, net	6,772	8,437
Prepaids and other assets	17,789	25,648
Total assets	484,150	500,706
Liabilities and Owners' Equity [Abstract]
Mortgages payable, net	368,032	367,865
Accounts payable and other liabilities	17,173	13,414
Total liabilities	385,205	381,279
Owners' equity	98,945	119,427
Total liabilities and owners' equity	$ 484,150	$ 500,706

Investments in Unconsolidated_7

Investments in Unconsolidated Real Estate Joint Ventures - Summary Statements of Operations for Unconsolidated Joint Ventures (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Expenses:
Impairment charges											$ 0
Unconsolidated Properties [Member]
Summary Statements of Operations of Unconsolidated Joint Ventures [Line Items]
Revenues									$ 93,508,000	$ 94,509,000	96,776,000
Expenses:
Property operating									36,812,000	37,121,000	36,507,000
General and administrative									271,000	266,000	350,000
Impairment charges									0	14,359,000	18,042,000
Depreciation and amortization									24,454,000	26,262,000	28,162,000
Total expenses									61,537,000	78,008,000	83,061,000
Interest expense									(16,234,000)	(14,518,000)	(10,365,000)
Other non-operating income									507,000	234,000	71,000
Total other income (expense)									(15,727,000)	(14,284,000)	(10,294,000)
Net income									16,244,000	2,217,000	3,421,000
Tanger Factory Outlet Centers, Inc. [Member]
Summary Statements of Operations of Unconsolidated Joint Ventures [Line Items]
Revenues	$ 120,492,000	$ 118,994,000	$ 115,707,000	$ 123,155,000	$ 127,199,000	$ 124,236,000	$ 119,711,000	$ 123,535,000	478,348,000	494,681,000	488,234,000
Expenses:
Property operating									157,734,000	160,457,000	155,235,000
General and administrative									53,790,000	44,167,000	44,004,000
Impairment charges									37,610,000	49,739,000	0
Depreciation and amortization									123,314,000	131,722,000	127,744,000
Total expenses									372,448,000	386,085,000	327,511,000
Interest expense									(61,672,000)	(64,821,000)	(64,825,000)
Other non-operating income									(2,761,000)	864,000	2,724,000
Total other income (expense)									(21,011,000)	(63,957,000)	(90,784,000)
Net income	$ (12,379,000)	$ 24,809,000	$ 14,457,000	$ 65,841,000	$ 20,619,000	$ (23,031,000)	$ 24,290,000	$ 23,685,000	92,728,000	45,563,000	71,876,000
The Company and Operating Partnership's share of:
Net income									7,839,000	924,000	1,937,000
Depreciation, amortization and asset impairments (real estate related)									$ 12,512,000	$ 20,494,000	$ 22,878,000

Investments in Unconsolidated_8

Investments in Unconsolidated Real Estate Joint Ventures - Narrative (Details) ft² in Thousands, $ in Thousands	Nov. 30, 2018USD ($)	Jun. 30, 2017USD ($)ft²	Oct. 31, 2019	May 31, 2019USD ($)ft²	Dec. 31, 2018USD ($)ft²	Jun. 30, 2018USD ($)	Jul. 31, 2017USD ($)Extension	Nov. 30, 2016USD ($)Extension	May 31, 2018USD ($)	Dec. 31, 2019USD ($)ft²	Jun. 30, 2016ft²	Jul. 31, 2014ft²	Nov. 30, 2013ft²	Oct. 31, 2012ft²
Schedule of Equity Method Investments [Line Items]
Difference in basis					$ 4,100					$ 3,800
Square Feet | ft²										878
Net proceeds on sale of assets										$ 128,505
Charlotte [Member]
Schedule of Equity Method Investments [Line Items]
Square Feet | ft²					398					399		398
Ownership %					50.00%					50.00%
Columbus [Member]
Schedule of Equity Method Investments [Line Items]
Square Feet | ft²					355					355	355
Ownership %					50.00%					50.00%
Galveston/Houston [Member]
Schedule of Equity Method Investments [Line Items]
Square Feet | ft²					353					353				353
Ownership %					50.00%					50.00%
National Harbor [Member]
Schedule of Equity Method Investments [Line Items]
Square Feet | ft²					341					341			341
Ownership %					50.00%					50.00%
RioCan Canada [Member]
Schedule of Equity Method Investments [Line Items]
Square Feet | ft²					924					764
Ownership %					50.00%					50.00%
Ottawa [Member]
Schedule of Equity Method Investments [Line Items]
Square Feet | ft²		357
Estimated square feet of expansion | ft²		39
Cookstown [Member]
Schedule of Equity Method Investments [Line Items]
Square Feet | ft²										308
Les Factoreries St. Sauveur Property [Member]
Schedule of Equity Method Investments [Line Items]
Square Feet | ft²										116
Bromont Outlet Mall Property [Member]
Schedule of Equity Method Investments [Line Items]
Square Feet | ft²				161
Net proceeds on sale of assets				$ 6,400
Our Share of Proceeds from Sale of Other Real Estate				3,200
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax				$ 3,600
Unconsolidated Properties [Member] | Mortgages [Member] | Charlotte [Member]
Schedule of Equity Method Investments [Line Items]
Principal						$ 100,000			$ 90,000
Stated Interest Rate(s)						4.30%
Basis spread on variable rate									1.45%
Proceeds from joint venture debt						$ 9,300
Unconsolidated Properties [Member] | Mortgages [Member] | Columbus [Member]
Schedule of Equity Method Investments [Line Items]
Principal								$ 85,000
Basis spread on variable rate								1.65%
Number of mortgage extensions | Extension								2
Term of debt extension			1 year					1 year
Proceeds from joint venture debt								$ 84,200
Unconsolidated Properties [Member] | Mortgages [Member] | Galveston/Houston [Member]
Schedule of Equity Method Investments [Line Items]
Principal		$ 65,000
Basis spread on variable rate		1.50%					1.65%
Number of mortgage extensions | Extension							2
Term of debt extension							1 year
Proceeds from joint venture debt							$ 14,500
Borrowing capacity		$ 70,000					$ 80,000
Unconsolidated Properties [Member] | National Harbor [Member] | Mortgages [Member]
Schedule of Equity Method Investments [Line Items]
Principal	$ 87,000				$ 95,000
Stated Interest Rate(s)					4.60%
Basis spread on variable rate	1.65%
Proceeds from joint venture debt					$ 7,400

Deferred Charges (Details)

Deferred Charges (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Deferred lease costs and other intangibles, gross	$ 268,643	$ 290,940
Accumulated amortization	(171,931)	(174,066)
Deferred lease costs and other intangibles, net	96,712	116,874
Deferred Lease Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Deferred lease costs and other intangibles, gross	85,444	87,590
Above market lease value [Member]
Finite-Lived Intangible Assets [Line Items]
Deferred lease costs and other intangibles, gross	46,252	49,869
Lease in place value [Member]
Finite-Lived Intangible Assets [Line Items]
Deferred lease costs and other intangibles, gross	58,195	64,152
Tenant Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Deferred lease costs and other intangibles, gross	37,221	40,690
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Deferred lease costs and other intangibles, gross	$ 41,531	$ 48,639

Deferred Charges - Schedule of

Deferred Charges - Schedule of Expected Amortization Expense (Details) $ in Thousands	Dec. 31, 2019USD ($)
Above/Below Market Lease, Net [Member]
2020	$ 410
2021	299
2022	285
2023	368
2024	298
Total	1,660
Deferred Lease Costs and Other Intangibles [Member]
2020	5,172
2021	4,611
2022	4,319
2023	3,668
2024	3,407
Total	$ 21,177

Deferred Charges - Narrative (D

Deferred Charges - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Amortization of above and below market leases	$ (1)	$ (2.1)	$ (2.4)
Deferred Lease Costs and Other Intangibles [Member]
Amortization of deferred lease costs and other intangibles	13.7	15.1	$ 17.8
Other Liabilities [Member]
Below market lease intangibles, net of accumulated amortization	$ 19.5	$ 21.7

Debt of the Company (Details)

Debt of the Company (Details) - Debt [Member] - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Jan. 31, 2018	Dec. 31, 2017
Tanger Properties Limited Partnership [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 600,000,000		$ 600,000,000	$ 520,000,000
Tanger Factory Outlet Centers, Inc. [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Guarantor obligations, current carrying value	0	$ 145,100,000
Tanger Factory Outlet Centers, Inc. [Member] | Unsecured Term Loan [Member]
Line of Credit Facility [Line Items]
Guarantor obligations, current carrying value	$ 350,000,000	$ 350,000,000

Debt of the Operating Partner_3

Debt of the Operating Partnership (Details) - Tanger Properties Limited Partnership [Member] - USD ($)	Sep. 30, 2018	Jan. 31, 2018	Dec. 31, 2017	Oct. 31, 2018	Feb. 28, 2018	Jan. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jul. 31, 2017	Dec. 31, 2011
Debt Instrument [Line Items]
Principal							$ 1,582,309,000	$ 1,730,779,000
Book value of debt							1,569,773,000	1,712,918,000
Debt issuance cost net, recorded in prepaids and other assets							2,000,000
Debt Issuance Costs, Net							11,200,000	14,100,000
Amortization of Debt Issuance Costs							$ 3,004,000	3,058,000	$ 3,263,000
Senior Notes [Member] | 3.875% 2023 Senior Notes [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)							3.875%
Principal							$ 250,000,000	250,000,000
Book value of debt							$ 247,308,000	246,664,000
Senior Notes [Member] | 3.75% 2024 Senior Notes [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)							3.75%
Principal							$ 250,000,000	250,000,000
Book value of debt							$ 248,127,000	247,765,000
Senior Notes [Member] | 3.125% 2026 Senior Notes [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)							3.125%
Principal							$ 350,000,000	350,000,000
Book value of debt							$ 346,215,000	345,669,000
Senior Notes [Member] | 3.875% 2027 Senior Notes [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)							3.875%			3.875%
Principal							$ 300,000,000	300,000,000		$ 300,000,000
Book value of debt							296,953,000	296,565,000
Mortgages [Member] | Atlantic City Outlets The Walk [Member]
Debt Instrument [Line Items]
Principal							30,909,000	34,279,000
Book value of debt							32,531,000	36,298,000
Effective interest rate											5.05%
Mortgages [Member] | Southaven [Member]
Debt Instrument [Line Items]
Principal		$ 60,000,000			$ 51,400,000	$ 60,000,000	51,400,000	51,400,000
Book value of debt							51,272,000	51,173,000
Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Principal	$ 325,000,000			$ 350,000,000			350,000,000	350,000,000
Book value of debt							347,367,000	346,799,000
Line of Credit [Member]
Debt Instrument [Line Items]
Principal							0	145,100,000
Book value of debt							$ 0	$ 141,985,000
London Interbank Offered Rate (LIBOR) [Member] | Mortgages [Member] | Southaven [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		1.75%			1.80%		1.80%
London Interbank Offered Rate (LIBOR) [Member] | Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.95%			0.90%			0.90%
London Interbank Offered Rate (LIBOR) [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Basis spread on variable rate			0.90%			0.875%	0.875%
Minimum [Member] | Mortgages [Member] | Atlantic City Outlets The Walk [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)							5.14%
Maximum [Member] | Mortgages [Member] | Atlantic City Outlets The Walk [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)							7.65%

Debt of the Operating Partner_4

Debt of the Operating Partnership - Debt Maturities (Details) - Tanger Properties Limited Partnership [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Schedule of Maturities of Debt [Line Items]
2020	$ 3,566
2021	57,193
2022	4,436
2023	254,768
2024	605,140
Thereafter	657,206
Subtotal	1,582,309	$ 1,730,779
Net discount and debt origination costs	(12,536)
Total debt	$ 1,569,773	$ 1,712,918

Debt of the Operating Partner_5

Debt of the Operating Partnership - Narrative (Details) - USD ($)	Sep. 30, 2018	Jan. 31, 2018	Dec. 31, 2017	Oct. 31, 2018	Feb. 28, 2018	Jan. 31, 2018	Aug. 31, 2017	Jul. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Mar. 31, 2018	Nov. 30, 2017
Tanger Properties Limited Partnership [Member]
Debt Instrument [Line Items]
Principal balance of debt									$ 1,582,309,000	$ 1,730,779,000
Debt retirement make whole premium									0	0	$ 34,143,000
Tanger Properties Limited Partnership [Member] | Mortgages [Member]
Debt Instrument [Line Items]
Collateral for mortgages payable									174,200,000
Tanger Properties Limited Partnership [Member] | Mortgages [Member] | Southaven [Member]
Debt Instrument [Line Items]
Term of debt extension					2 years
Principal balance of debt		$ 60,000,000			$ 51,400,000	$ 60,000,000			$ 51,400,000	51,400,000
Tanger Properties Limited Partnership [Member] | Mortgages [Member] | Southaven [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		1.75%			1.80%				1.80%
Tanger Properties Limited Partnership [Member] | Mortgages [Member] | Foxwoods [Member]
Debt Instrument [Line Items]
Principal balance of debt													$ 70,300,000
Tanger Properties Limited Partnership [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Term of debt extension						1 year
Liquidity Line, Maximum Borrowings									$ 20,000,000
Syndicated Line, Maximum Borrowings									580,000,000
Line of Credit Facility, Syndicated Line, Potential Maximum Borrowings if Accordion Feature is Utilized		$ 1,200,000,000	$ 1,000,000,000			$ 1,200,000,000			1,200,000,000		1,000,000,000
Letters of Credit Outstanding, Amount									$ 170,000
Percentage of funds from operations allowed on a cumulative basis required for debt covenants									95.00%
Principal balance of debt									$ 0	145,100,000
Tanger Properties Limited Partnership [Member] | Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate			0.90%			0.875%			0.875%
Tanger Properties Limited Partnership [Member] | Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Principal balance of debt	$ 325,000,000			$ 350,000,000					$ 350,000,000	350,000,000
Proceeds from debt				$ 25,000,000
Tanger Properties Limited Partnership [Member] | Unsecured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.95%			0.90%					0.90%
Tanger Properties Limited Partnership [Member] | Senior Notes [Member] | 3.875% 2027 Senior Notes [Member]
Debt Instrument [Line Items]
Principal balance of debt								$ 300,000,000	$ 300,000,000	$ 300,000,000
Stated Interest Rate(s)								3.875%	3.875%
Notes price at percentage of the principal amount								99.579%
Yield to maturity								3.926%
Proceeds from Issuance of Long-term Debt								$ 295,900,000
Tanger Properties Limited Partnership [Member] | Senior Notes [Member] | 6.125% 2020 Senior Notes [Member]
Debt Instrument [Line Items]
Principal balance of debt							$ 300,000,000
Stated Interest Rate(s)							6.125%
Debt retirement make whole premium							$ 34,100,000
Write off of debt discount and deferred debt issuance costs							$ 1,500,000
Tanger Properties Limited Partnership [Member] | Debt [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		600,000,000	$ 520,000,000			$ 600,000,000			$ 600,000,000		$ 520,000,000
Loan origination costs		$ 2,300,000				$ 2,300,000
Designated as Hedging Instrument [Member]
Debt Instrument [Line Items]
Notional Amount									$ 390,000,000
Designated as Hedging Instrument [Member] | Southaven [Member]
Debt Instrument [Line Items]
Derivative, Fixed Interest Rate												2.47%
Notional Amount												$ 40,000,000

Derivative Financial Instrume_3

Derivative Financial Instruments - Classifications on Consolidated Balance Sheets (Details) - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Notional Amount	$ 390,000
Fair Value	(424)	$ 5,749
Interest Rate Swap One [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	$ 175,000
Company Average Fixed Pay Rate	1.03%
Fair Value	$ 1,018	4,948
Interest Rate Swap Two [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	$ 40,000
Company Average Fixed Pay Rate	2.47%
Fair Value	$ (376)	(6)
Interest Rate Swap Three [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	$ 150,000
Company Average Fixed Pay Rate	2.20%
Fair Value	$ (896)	807
Interest Rate Swap Four [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	$ 25,000
Company Average Fixed Pay Rate	1.75%
Fair Value	$ (170)	$ 0
London Interbank Offered Rate (LIBOR) [Member] | Interest Rate Swap One [Member]
Derivatives, Fair Value [Line Items]
Derivative, Interest Rate Term	1 month
London Interbank Offered Rate (LIBOR) [Member] | Interest Rate Swap Two [Member]
Derivatives, Fair Value [Line Items]
Derivative, Interest Rate Term	1 month
London Interbank Offered Rate (LIBOR) [Member] | Interest Rate Swap Three [Member]
Derivatives, Fair Value [Line Items]
Derivative, Interest Rate Term	1 month
London Interbank Offered Rate (LIBOR) [Member] | Interest Rate Swap Four [Member]
Derivatives, Fair Value [Line Items]
Derivative, Interest Rate Term	1 month

Derivative Financial Instrume_4

Derivative Financial Instruments - Gain (Loss) Recognized and Reclassified (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain recognized in OCI on derivative (Effective Portion)	$ (6,174)	$ 405	$ 1,351

Recurring (Details)

Recurring (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	$ 1,018	$ 5,755
Total liabilities	1,442	6
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0	0
Total liabilities	0	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	1,018	5,755
Total liabilities	1,442	6
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0	0
Total liabilities	0	0
Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps (prepaids and other assets)	1,018	5,755
Interest rate swaps (other liabilities)	1,442	6
Interest Rate Swap [Member] | 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
Interest rate swaps (other liabilities)	0	0
Interest Rate Swap [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps (prepaids and other assets)	1,018	5,755
Interest rate swaps (other liabilities)	1,442	6
Interest Rate Swap [Member] | 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
Interest rate swaps (other liabilities)	$ 0	$ 0

Fair Value Measurements Non-rec

Fair Value Measurements Non-recurring (Details) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2018
Fair Value, Inputs, Level 1, 2 and 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived assets	$ 10,000	$ 50,000
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived assets	0	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived assets	0	0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived assets	$ 10,000	$ 50,000

Fair Value Measurements Narrati

Fair Value Measurements Narrative (Details) - USD ($)	3 Months Ended		12 Months Ended	24 Months Ended
	Dec. 31, 2019	Sep. 30, 2018	Dec. 31, 2017	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment charges			$ 0
Jeffersonville [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment charges	$ 37,600,000	$ 49,700,000		$ 85,400,000

Fair Value Measurements Non-r_2

Fair Value Measurements Non-recurring measurement input (Details)	Dec. 31, 2019	Sep. 30, 2018
Terminal capitalization rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	12.00%	10.00%
Discount rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	13.00%	10.00%

Fair Value Measurements Debt (D

Fair Value Measurements Debt (Details) - Tanger Properties Limited Partnership [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	$ 1,603,814	$ 1,668,475
Recorded value of debt	1,569,773	1,712,918
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	0	0
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	1,169,481	1,085,138
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	$ 434,333	$ 583,337

Shareholders' Equity of the C_3

Shareholders' Equity of the Company (Details) - Tanger Factory Outlet Centers, Inc. [Member] - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Feb. 28, 2019	May 31, 2017
Exchange of Class A limited partnership units (in units)	49,511	34,749	32,348
Authorized repurchase amount				$ 169,300,000	$ 125,000,000
Additional share repurchase amount authorized				$ 44,300,000
Total number of shares purchased (in shares)	1,209,328	919,249	1,911,585
Stock repurchased average price per share (dollars per share)	$ 16.52	$ 21.74	$ 25.80
Shares repurchased exclusive of commissions and related fees	$ 19,976,000	$ 19,980,000	$ 49,324,000
Remaining amount authorized to be repurchase	$ 80,000,000

Partners' Equity of the Opera_3

Partners' Equity of the Operating Partnership (Details) - Tanger Properties Limited Partnership [Member] - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
General and Limited Partners' Capital Account, Units [Roll Forward]
General partner (in units)	1,000,000
Units withheld for employee income taxes (in units)	(131,873)	(89,437)	(69,886)
Grant of restricted common shares awards by the Company, net of forfeitures (in units)	242,167	355,184	411,968
Issuance of deferred units (in units)			0
Repurchase of units (in units)	(1,209,328)	(919,249)	(1,911,585)
Units issued upon exercise of options (in units)	0	0	1,800
General partner (in units)	1,000,000	1,000,000
General partner [Member]
General and Limited Partners' Capital Account, Units [Roll Forward]
General partner (in units)	1,000,000	1,000,000	1,000,000
Units withheld for employee income taxes (in units)	0	0	0
Exchange of Class A limited partnership units (in units)	0	0	0
Grant of restricted common shares awards by the Company, net of forfeitures (in units)	0	0	0
Repurchase of units (in units)	0	0	0
Units issued upon exercise of options (in units)			0
General partner (in units)	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 units)	4,960,684	4,995,433	5,027,781
Units withheld for employee income taxes (in units)	0	0	0
Exchange of Class A limited partnership units (in units)	(49,511)	(34,749)	(32,348)
Grant of restricted common shares awards by the Company, net of forfeitures (in units)	0	0	0
Repurchase of units (in units)	0	0	0
Units issued upon exercise of options (in units)			0
Limited partners (in units)	4,911,173	4,960,684	4,995,433
Class B Limited Partnership Units [Member]
General and Limited Partners' Capital Account, Units [Roll Forward]
Limited partners (in units)	92,941,783	93,560,536	95,095,891
Units withheld for employee income taxes (in units)	(131,873)	(89,437)	(69,886)
Exchange of Class A limited partnership units (in units)	49,511	34,749	32,348
Grant of restricted common shares awards by the Company, net of forfeitures (in units)	242,167	355,184	411,968
Repurchase of units (in units)	(1,209,328)	(919,249)	(1,911,585)
Units issued upon exercise of options (in units)			1,800
Limited partners (in units)	91,892,260	92,941,783	93,560,536
Limited partners [Member]
General and Limited Partners' Capital Account, Units [Roll Forward]
Limited partners (in units)	97,902,467	98,555,969	100,123,672
Units withheld for employee income taxes (in units)	(131,873)	(89,437)	(69,886)
Exchange of Class A limited partnership units (in units)	0	0	0
Grant of restricted common shares awards by the Company, net of forfeitures (in units)	242,167	355,184	411,968
Repurchase of units (in units)	(1,209,328)	(919,249)	(1,911,585)
Units issued upon exercise of options (in units)			1,800
Limited partners (in units)	96,803,433	97,902,467	98,555,969

Noncontrolling Interests (Detai

Noncontrolling Interests (Details) - Tanger Factory Outlet Centers, Inc. [Member] - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Exchange of Class A limited partnership units (in units)									49,511	34,749	32,348
Repurchase of shares (in shares)									1,209,328	919,249	1,911,585
Net income attributable to Tanger Factory Outlet Centers, Inc.	$ (11,749)	$ 23,546	$ 13,727	$ 62,331	$ 19,707	$ (21,859)	$ 22,969	$ 22,838	$ 87,855	$ 43,655	$ 68,002
Increase in Tanger Factory Outlet Centers, Inc. paid-in-capital adjustments to noncontrolling interests									200	322
Changes from net income attributable to Tanger Factory Outlet Centers, Inc. and transfers from noncontrolling interest									$ 88,055	$ 43,977

Earnings Per Share of the Com_3

Earnings Per Share of the Company (Details) - Tanger Factory Outlet Centers, Inc. [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Numerator
Net income attributable to Tanger Factory Outlet Centers, Inc.	$ (11,749)	$ 23,546	$ 13,727	$ 62,331	$ 19,707	$ (21,859)	$ 22,969	$ 22,838	$ 87,855	$ 43,655	$ 68,002
Less allocation of earnings to participating securities									(1,336)	(1,211)	(1,209)
Net income available to common shareholders/unitholders of Tanger Factory Outlet Centers, Inc./the Operating Partnership	$ (12,055)	$ 23,241	$ 13,613	$ 61,720	$ 19,385	$ (22,172)	$ 22,656	$ 22,575	$ 86,519	$ 42,444	$ 66,793
Denominator
Basic weighted average common shares (in shares)									92,808,000	93,309,000	94,506,000
Effect of outstanding options and restricted common shares (in shares)									0	1,000	16,000
Diluted weighted average common shares (in shares)									92,808,000	93,310,000	94,522,000
Basic earnings per common share:
Net income, basic (in dollars per share)	$ (0.13)	$ 0.25	$ 0.15	$ 0.66	$ 0.21	$ (0.24)	$ 0.24	$ 0.24	$ 0.93	$ 0.45	$ 0.71
Diluted earnings per common share:
Net income, diluted (in dollars per share)	$ (0.13)	$ 0.25	$ 0.15	$ 0.66	$ 0.21	$ (0.24)	$ 0.24	$ 0.24	$ 0.93	$ 0.45	$ 0.71
Antidilutive Incremental Common Shares Attributable to Notional Units (in units)									1,100,000	1,000,000	603,000
Antidilutive securities excluded from computation of earnings per share (in shares)									523,000	535,000	169,000

Earnings Per Unit of the Oper_3

Earnings Per Unit of the Operating Partnership (Details) - Tanger Properties Limited Partnership [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Numerator
Net income attributable to Tanger Factory Outlet Centers, Inc.	$ 92,533	$ 45,984	$ 71,611
Less allocation of earnings to participating securities	(1,336)	(1,211)	(1,209)
Net income available to common shareholders/unitholders of Tanger Factory Outlet Centers, Inc./the Operating Partnership	$ 91,197	$ 44,773	$ 70,402
Denominator
Basic weighted average common shares (in shares)	97,766,000	98,302,000	99,533,000
Effect of outstanding options and restricted common shares (in shares)	0	1,000	16,000
Diluted weighted average common shares (in shares)	97,766,000	98,303,000	99,549,000
Basic earnings per common unit:
Net income, basic (in dollars per share)	$ 0.93	$ 0.45	$ 0.71
Diluted earnings per common unit:
Net income, diluted (in dollars per share)	$ 0.93	$ 0.45	$ 0.71
Antidilutive Incremental Common Shares Attributable to Notional Units (in units)	1,100,000	1,000,000	603,000
Antidilutive securities excluded from computation of earnings per share (in shares)	523,000	535,000	169,000

Equity-Based Compensation - The

Equity-Based Compensation - The Plan Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exchange Ratio of Partnership Units for Common Shares	1
Tanger Factory Outlet Centers, Inc. [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation Cost Not yet Recognized | $	$ 15.3
Weighted-average period over cost is expected to be recognized related to unvested common equity-based compensation arrangements	2 years 4 months 24 days
Tanger Factory Outlet Centers, Inc. [Member] | Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common shares that may be issued (in shares)	18,700,000
Shares remaining available for future issuance (in shares)	3,854,000

Equity-Based Compensation - Sha

Equity-Based Compensation - Share-Based Compensation Expense (Details) - Tanger Factory Outlet Centers, Inc. [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense	$ 18,120	$ 14,669	$ 13,585
Equity-based compensation expense capitalized	384	1,131	1,044
Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense	12,036	9,870	9,395
Notional Unit Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense	5,918	4,356	3,913
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense	$ 166	$ 443	$ 277

Equity-Based Compensation - Res

Equity-Based Compensation - Restricted Share Activity (Details) - Tanger Factory Outlet Centers, Inc. [Member] - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restricted Shares and Restricted Share Units [Member]
Number of shares/units
Beginning balance	842,080	749,906	879,268
Granted	308,623	407,156	253,431
Vested	(469,178)	(314,982)	(368,043)
Forfeited	0	0	(14,750)
Ending balance	681,525	842,080	749,906
Weighted-average grant date fair value
Beginning balance (in dollars per share)	$ 27.56	$ 32.30	$ 31.09
Granted (in dollars per share)	21.05	21.13	33.07
Vested (in dollars per share)	27.73	31.43	29.87
Forfeited (in dollars per share)	0	0	34.39
Ending balance (in dollars per share)	$ 23.92	$ 27.56	$ 32.30
Restricted Share Units [Member]
Number of shares/units
Granted	51,217	44,452

Equity-Based Compensation - R_2

Equity-Based Compensation - Restricted Common Shares Narrative (Details) - Tanger Factory Outlet Centers, Inc. [Member] - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares paid for tax withholding for share based compensation (in shares)		131,873	89,437	69,886
Payments for the employees' tax obligations to taxing authorities		$ 2,524	$ 2,068	$ 2,436
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted		531,827	409,972	296,400
Vested		0	0	184,455
Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total value of restricted common shares vested		$ 9,200	$ 9,200	$ 12,400
Shares paid for tax withholding for share based compensation (in shares)		132,000	89,000	70,000
Payments for the employees' tax obligations to taxing authorities		$ 2,500	$ 2,100	$ 2,400
Restricted Common Share Award Plan [Member] | Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted		309,000	407,000	253,000
Restricted Common Share Award Plan [Member] | Independent director | Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Restricted Common Share Award Plan [Member] | Chief executive officer | Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Holding period		3 years
Restricted Common Share Award Plan [Member] | Minimum [Member] | Senior Executive officer | Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Restricted Common Share Award Plan [Member] | Maximum [Member] | Senior Executive officer | Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		5 years
Absolute portion [Member] | 2014 OPP [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	184,000
Year one [Member] | Absolute portion [Member] | 2014 OPP [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested	94,000
Year two [Member] | Absolute portion [Member] | 2014 OPP [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested	90,000

Equity-Based Compensation - Out

Equity-Based Compensation - Outperformance Plan Narrative (Details) - Tanger Factory Outlet Centers, Inc. [Member] - 2019 OPP [Member] - Performance Shares [Member]	12 Months Ended
	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Award Measurement Period	3 years
Year one [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Rights, Percentage	50.00%
One year after measurement period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Rights, Percentage	50.00%

Equity-Based Compensation - O_2

Equity-Based Compensation - Outperformance Plan (Details) - Tanger Factory Outlet Centers, Inc. [Member] - Performance Shares [Member] - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Granted (in dollars per share)	$ 12.09	$ 12.42	$ 16.60
2019 OPP [Member]
Maximum number of restricted common shares that may be earned	531,827
Granted (in dollars per share)	$ 12.09
2018 OPP [Member]
Maximum number of restricted common shares that may be earned		409,972
Granted (in dollars per share)		$ 12.42
2017 OPP [Member]
Maximum number of restricted common shares that may be earned			296,400
Granted (in dollars per share)			$ 16.60
2016 OPP [Member]
Maximum number of restricted common shares that may be earned				321,900
Granted (in dollars per share)				$ 15.10
2015 OPP [Member]
Maximum number of restricted common shares that may be earned					306,600
Granted (in dollars per share)					$ 15.85
Absolute portion [Member] | 2019 OPP [Member]
Percent of total award	33.00%
Absolute portion [Member] | 2018 OPP [Member]
Percent of total award		33.00%
Absolute portion [Member] | 2017 OPP [Member]
Percent of total award			50.00%
Absolute portion [Member] | 2016 OPP [Member]
Percent of total award				50.00%
Absolute portion [Member] | 2015 OPP [Member]
Percent of total award					60.00%
Relative portion of award [Member] | 2019 OPP [Member]
Percent of total award	67.00%
Relative portion of award [Member] | 2018 OPP [Member]
Percent of total award		67.00%
Relative portion of award [Member] | 2017 OPP [Member]
Percent of total award			50.00%
Relative portion of award [Member] | 2016 OPP [Member]
Percent of total award				50.00%
Relative portion of award [Member] | 2015 OPP [Member]
Percent of total award					40.00%
Minimum [Member] | Absolute portion [Member] | 2019 OPP [Member]
Absolute share price appreciation range	19.00%	19.00%	18.00%	18.00%	25.00%
Percentage of units to be earned	20.00%	20.00%	20.00%	20.00%	33.00%
Minimum [Member] | Relative portion of award [Member] | 2019 OPP [Member]
Percentage of units to be earned	20.00%	20.00%	20.00%	20.00%	33.00%
Threshold Percentage for Performance Target	30.00%	30.00%	40.00%	40.00%	50.00%
Maximum [Member] | Absolute portion [Member] | 2019 OPP [Member]
Absolute share price appreciation range	30.00%	30.00%	35.00%	35.00%	35.00%
Percentage of units to be earned	100.00%	100.00%	100.00%	100.00%	100.00%
Maximum [Member] | Relative portion of award [Member] | 2019 OPP [Member]
Percentage of units to be earned	100.00%	100.00%	100.00%	100.00%	100.00%
Threshold Percentage for Performance Target	80.00%	80.00%	70.00%	70.00%	70.00%

Equity-Based Compensation - O_3

Equity-Based Compensation - Outperformance Plan Assumptions (Details) - Tanger Factory Outlet Centers, Inc. [Member] - Performance Shares [Member]	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
2019 OPP [Member]
Risk Free Interest Rate	2.55%
Expected Dividend Rate	5.30%
Expected Volatility Rate	24.00%
2018 OPP [Member]
Risk Free Interest Rate		2.40%
Expected Dividend Rate		4.80%
Expected Volatility Rate		27.00%
2017 OPP [Member]
Risk Free Interest Rate			1.52%
Expected Dividend Rate			3.40%
Expected Volatility Rate			19.00%

Equity-Based Compensation - O_4

Equity-Based Compensation - Outperformance Plan Rollforward (Details) - Tanger Factory Outlet Centers, Inc. [Member] - Performance Shares [Member] - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Number of units
Beginning balance	1,013,383	603,411	759,176
Awarded	531,827	409,972	296,400
Earned	0	0	(184,455)
Forfeited	(421,306)	0	(267,710)
Ending balance	1,123,904	1,013,383	603,411
Weighted-average grant date fair value
Beginning balance (in dollars per share)	$ 14.44	$ 15.83	$ 15.36
Awarded (in dollars per share)	12.09	12.42	16.60
Earned (in dollars per share)	0	0	14.71
Forfeited (in dollars per share)	14.36	0	15.84
Ending balance (in dollars per share)	$ 13.36	$ 14.44	$ 15.83

Equity-Based Compensation - Opt

Equity-Based Compensation - Option Awards (Details) - Tanger Factory Outlet Centers, Inc. [Member]	12 Months Ended
	Dec. 31, 2019$ / sharesshares
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Options | shares	523,300
Options Outstanding, Weighted average exercise price (in dollars per share) | $ / shares	$ 25.57
Options Outstanding, Weighted remaining contractual life in years	6 years 21 days
Options Exercisable, Options | shares	284,500
Options Exercisable, Weighted average exercise price (in dollars per share) | $ / shares	$ 28.61
Exercise price one [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Options | shares	298,500
Options Outstanding, Weighted average exercise price (in dollars per share) | $ / shares	$ 21.94
Options Outstanding, Weighted remaining contractual life in years	8 years 2 months 15 days
Options Exercisable, Options | shares	59,700
Options Exercisable, Weighted average exercise price (in dollars per share) | $ / shares	$ 21.94
Exercise price two [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Options | shares	61,700
Options Outstanding, Weighted average exercise price (in dollars per share) | $ / shares	$ 26.06
Options Outstanding, Weighted remaining contractual life in years	1 year 1 month 24 days
Options Exercisable, Options | shares	61,700
Options Exercisable, Weighted average exercise price (in dollars per share) | $ / shares	$ 26.06
Exercise price three [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Options | shares	163,100
Options Outstanding, Weighted average exercise price (in dollars per share) | $ / shares	$ 32.02
Options Outstanding, Weighted remaining contractual life in years	4 years 3 days
Options Exercisable, Options | shares	163,100
Options Exercisable, Weighted average exercise price (in dollars per share) | $ / shares	$ 32.02

Equity-Based Compensation - O_5

Equity-Based Compensation - Options Awards Activity (Details) - Tanger Factory Outlet Centers, Inc. [Member] - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Shares
Beginning balance	534,500	231,200	242,200
Granted	0	331,000	0
Exercised	0	0	(1,800)
Forfeited	(11,200)	(27,700)	(9,200)
Ending balance	523,300	534,500	231,200
Weighted-average exercise price
Beginning balance (in dollars per share)	$ 25.56	$ 30.42	$ 30.46
Granted (in dollars per share)	0	21.94	0
Exercised (in dollars per share)	0	0	29.70
Forfeited (in dollars per share)	25.27	22.62	31.83
Ending balance (in dollars per share)	$ 25.57	$ 25.56	$ 30.42
Weighted-average remaining contractual life in years, outstanding	6 years 21 days	7 years 29 days	5 years 2 months 26 days
Aggregate intrinsic value, outstanding	$ 0	$ 0	$ 28,000
Vested and Expected to Vest
Vested and Expected to Vest, Shares	498,008
Vested and Expected to Vest, Weighted-average exercise price (in dollars per share)	$ 25.75
Vested and Expected to Vest, Weighted-average remaining contractual life in years	5 years 11 months 19 days
Vested and Expected to Vest, Aggregate intrinsic value	$ 0
Exercisable
Exercisable, Shares	284,500
Exercisable, Weighted-average exercise price (in dollars per share)	$ 28.61
Exercisable, Weighted-average remaining contractual life in years	4 years 3 months 7 days
Exercisable, Aggregate intrinsic value	$ 0

Equity-Based Compensation - O_6

Equity-Based Compensation - Options Awards Narrative (Details) - Tanger Factory Outlet Centers, Inc. [Member] - USD ($) $ / shares in Units, shares in Thousands	1 Months Ended	12 Months Ended
	Feb. 28, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Weighted average exercise price (in dollars per share)				$ 25.57
Intrinsic value of options exercised during the period		$ 0	$ 8,000
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	331
Options Outstanding, Weighted average exercise price (in dollars per share)	$ 21.94
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years
Award Vesting Rights, Percentage	20.00%
Vesting period	5 years
Share-based Compensation Arrangement by Share-based Payment Award, vesting period commencement	1 year
Share-based Compensation Arrangement by Share-based Payment Award, Option, Nonvested, Weighted Average Exercise Price	$ 3.62
Expected Dividend Rate	6.24%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	7 years 1 month 6 days
Expected Volatility Rate	32.47%
Risk Free Interest Rate	2.80%
Share-based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Forfeiture Rate Used, Minimum	3.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Forfeiture Rate Used, Maximum	10.00%

Equity-Based Compensation Equit

Equity-Based Compensation Equity-Based Compensation - 401(k) Retirement Savings Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Retirement Benefits [Abstract]
Employer 401(K) retirement savings plan contribution Amount	$ 889	$ 872	$ 862

Accumulated Other Comprehensi_5

Accumulated Other Comprehensive Loss of the Company - Balances of Each Component of AOCI (Details) - Tanger Factory Outlet Centers, Inc. [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 505,535	$ 612,302	$ 705,441
Ending balance	456,109	505,535	612,302
Interest rate swap gain (loss) to be reclassified within twelve months	(344)
Foreign Currency Tanger Factory Outlet Centers, Inc. Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(32,610)	(24,360)	(32,087)
Other comprehensive income (loss) before reclassifications	4,062	(8,250)	7,727
Reclassification out of accumulated other comprehensive income into interest expense	3,454	0	0
Ending balance	(25,094)	(32,610)	(24,360)
Cash flow hedges Tanger Factory Outlet Centers, Inc. Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other comprehensive income (loss) before reclassifications	(3,755)
Reclassification out of accumulated other comprehensive income into interest expense	(2,105)
Ending balance	(401)
Cash flow hedges Tanger Factory Outlet Centers, Inc. Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	5,459	5,075	3,792
Other comprehensive income (loss) before reclassifications		2,335	1,020
Reclassification out of accumulated other comprehensive income into interest expense		(1,951)	263
Ending balance		5,459	5,075
Total Tanger Factory Outlet Centers, Inc. Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(27,151)	(19,285)	(28,295)
Other comprehensive income (loss) before reclassifications	307	(5,915)	8,747
Reclassification out of accumulated other comprehensive income into interest expense	1,349	(1,951)	263
Ending balance	(25,495)	(27,151)	(19,285)
Foreign Currency noncontrolling interest [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(1,770)	(1,329)	(1,740)
Other comprehensive income (loss) before reclassifications	217	(441)	411
Reclassification out of accumulated other comprehensive income into interest expense	184	0	0
Ending balance	(1,369)	(1,770)	(1,329)
Cash Flow Hedges noncontrolling interest [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	290	269	201
Other comprehensive income (loss) before reclassifications		126	55
Reclassification out of accumulated other comprehensive income into interest expense		(105)	13
Ending balance		290	269
Cash Flow Hedges noncontrolling interest [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other comprehensive income (loss) before reclassifications	(202)
Reclassification out of accumulated other comprehensive income into interest expense	(112)
Ending balance	(24)
Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(1,480)	(1,060)	(1,539)
Other comprehensive income (loss) before reclassifications	15	(315)	466
Reclassification out of accumulated other comprehensive income into interest expense	72	(105)	13
Ending balance	$ (1,393)	$ (1,480)	$ (1,060)

Accumulated Other Comprehensi_6

Accumulated Other Comprehensive Loss of the Operating Partnership - Balances of Each Component (Details) - Tanger Properties Limited Partnership [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 505,535
Ending Balance	456,109	$ 505,535
Interest rate swap gain (loss) to be reclassified within twelve months	(344)
Foreign currency [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(34,380)	(25,689)	$ (33,827)
Other comprehensive income before reclassifications	4,279	(8,691)	8,138
Reclassification out of accumulated other comprehensive income into interest expense	3,638
Ending Balance	(26,463)	(34,380)	(25,689)
Cash flow hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other comprehensive income before reclassifications	(3,957)
Reclassification out of accumulated other comprehensive income into interest expense	(2,217)
Ending Balance	(425)
Cash flow hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	5,749	5,344	3,993
Other comprehensive income before reclassifications		2,461	1,075
Reclassification out of accumulated other comprehensive income into interest expense		(2,056)	276
Ending Balance		5,749	5,344
Accumulated other comprehensive income (loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(28,631)	(20,345)	(29,834)
Other comprehensive income before reclassifications	322	(6,230)	9,213
Reclassification out of accumulated other comprehensive income into interest expense	1,421	(2,056)	276
Ending Balance	$ (26,888)	$ (28,631)	$ (20,345)

Supplementary Income Statemen_3

Supplementary Income Statement Information (Details) - Tanger Factory Outlet Centers, Inc. [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Advertising and promotion	$ 26,022	$ 27,066	$ 29,046
Common area maintenance	70,472	73,367	71,195
Real estate taxes	33,430	32,836	30,695
Other operating expenses	27,810	27,188	24,299
Operating Costs and Expenses	$ 157,734	$ 160,457	$ 155,235

Leasing Agreements - Rental Rev

Leasing Agreements - Rental Revenues (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)OutletCenterstore	Dec. 31, 2018OutletCenterstore
Rental revenues - fixed	$ 360,513
Rental revenues - variable	103,433
Rental revenues	463,946
Accounting Standards Update 2016-02 [Member]
Executory costs on a straight-line basis	6,400
Indirect internal leasing costs	$ 4,900
Consolidated Properties [Member]
Number of stores | store	2,400	2,600
Number of outlet centers | OutletCenter	32	36

Leasing Agreements - Future Min

Leasing Agreements - Future Minimum Lease Receipts ASC 842 (Details) $ in Thousands	Dec. 31, 2019USD ($)
Leases [Abstract]
2020	$ 316,397
2021	282,225
2022	247,874
2023	213,932
2024	179,081
Thereafter	349,234
Future minimum lease receipts	$ 1,588,743

Leasing Agreements - Future m_2

Leasing Agreements - Future minimum Lease Receipts ASC 840 (Details) $ in Thousands	Dec. 31, 2018USD ($)
Leases [Abstract]
2019	$ 285,343
2020	265,361
2021	229,553
2022	195,808
2023	164,845
Thereafter	364,844
Future minimum lease receipts	$ 1,505,754

Leasing Agreements - Lessee (De

Leasing Agreements - Lessee (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Mar. 29, 2019	Jan. 01, 2019
Operating lease liabilities	$ 91,237
Operating lease costs	5,519
Short-term lease costs	2,297
Variable lease costs	231
Total lease costs	$ 8,047
Weighted - average remaining lease term (years)	50 years
Weighted - average discount rate	5.00%
Operating cash outflows related to operating leases	$ 5,569
Rental payments		$ 7,200	$ 7,100
Accounting Standards Update 2016-02 [Member]
Operating lease right-of-use assets					$ 90,400
Operating lease liabilities					$ 95,100
Ocean City
Operating lease right-of-use assets				$ 2,500

Leasing Agreements - Future M_3

Leasing Agreements - Future Minimum Lease Payments ASC 842 (Details) $ in Thousands	Dec. 31, 2019USD ($)
Leases [Abstract]
2020	$ 5,568
2021	5,613
2022	5,669
2023	5,709
2024	5,765
Thereafter	226,876
Total lease payments	255,200
Less imputed interest	163,963
Present value of lease liabilities	$ 91,237

Leasing Agreements - Future M_4

Leasing Agreements - Future Minimum Lease Payments ASC 840 (Details) $ in Thousands	Dec. 31, 2018USD ($)
Leases [Abstract]
2019	$ 7,526
2020	7,311
2021	7,140
2022	7,127
2023	7,167
Thereafter	258,438
Total minimum payments	$ 294,709

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details) $ in Thousands	Dec. 31, 2019USD ($)
Loss Contingencies [Line Items]
Commitments to complete construction of our ongoing capital projects and other capital expenditure requirement	$ 17,700
Minimum [Member]
Loss Contingencies [Line Items]
Percent of guaranty of completion and principal guaranty	5.00%
Maximum [Member]
Loss Contingencies [Line Items]
Percent of guaranty of completion and principal guaranty	100.00%
Debt [Member] | Mortgages [Member]
Loss Contingencies [Line Items]
Maximum amount of joint venture debt guaranteed by the Company	$ 19,400
Unconsolidated Properties [Member]
Loss Contingencies [Line Items]
Commitments to complete construction of our ongoing capital projects and other capital expenditure requirement	1,000
Company's share of joint venture purchase commitment	$ 481

Subsequent Events (Details)

Subsequent Events (Details) - USD ($)	Sep. 30, 2018	Dec. 31, 2017	Feb. 19, 2020	Jan. 31, 2020	Oct. 31, 2018	Jan. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Tanger Properties Limited Partnership [Member]
Subsequent Event [Line Items]
Distributions Per Limited Partnership Unit Outstanding, Basic							$ 1.415	$ 1.3925	$ 1.353
Principal							$ 1,582,309,000	$ 1,730,779,000
Performance Shares [Member] | Tanger Factory Outlet Centers, Inc. [Member]
Subsequent Event [Line Items]
Granted							531,827	409,972	296,400
Performance Shares [Member] | Tanger Factory Outlet Centers, Inc. [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Granted			697,000
2020 OPP [Member] | Performance Shares [Member] | Tanger Factory Outlet Centers, Inc. [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Share-based Award Measurement Period			3 years
Restricted Common Share Award Plan [Member] | Restricted Shares [Member] | Tanger Factory Outlet Centers, Inc. [Member]
Subsequent Event [Line Items]
Granted							309,000	407,000	253,000
Restricted Common Share Award Plan [Member] | Restricted Shares [Member] | Tanger Factory Outlet Centers, Inc. [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Granted			399,000
Fourth Quarter [Member] | Tanger Factory Outlet Centers, Inc. [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Declared				$ 0.355
Distributions Per Limited Partnership Unit Outstanding, Basic				0.355
First Quarter [Member] | Tanger Factory Outlet Centers, Inc. [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Declared				0.3575
Distributions Per Limited Partnership Unit Outstanding, Basic				$ 0.3575
Line of Credit [Member] | Tanger Properties Limited Partnership [Member]
Subsequent Event [Line Items]
Facility fee percentage							0.15%
Principal							$ 0	$ 145,100,000
Line of Credit [Member] | Tanger Properties Limited Partnership [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Facility fee percentage			0.20%
Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member] | Tanger Properties Limited Partnership [Member]
Subsequent Event [Line Items]
Basis spread on variable rate		0.90%				0.875%	0.875%
Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member] | Tanger Properties Limited Partnership [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Basis spread on variable rate			1.00%
Unsecured Term Loan [Member] | Tanger Properties Limited Partnership [Member]
Subsequent Event [Line Items]
Principal	$ 325,000,000				$ 350,000,000		$ 350,000,000	$ 350,000,000
Unsecured Term Loan [Member] | Tanger Properties Limited Partnership [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Principal			$ 350,000,000
Unsecured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] | Tanger Properties Limited Partnership [Member]
Subsequent Event [Line Items]
Basis spread on variable rate	0.95%				0.90%		0.90%
Unsecured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] | Tanger Properties Limited Partnership [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Basis spread on variable rate			1.00%
Debt [Member] | Line of Credit [Member] | Tanger Properties Limited Partnership [Member]
Subsequent Event [Line Items]
Maximum borrowing capacity		$ 520,000,000				$ 600,000,000	$ 600,000,000		$ 520,000,000
Debt [Member] | Line of Credit [Member] | Tanger Properties Limited Partnership [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Maximum borrowing capacity			$ 600,000,000

Quarterly Financial Data of t_3

Quarterly Financial Data of the Company (Unaudited) (Details) - USD ($)	3 Months Ended								12 Months Ended			24 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019
Diluted earnings per common share:
Gain on sale of assets									$ 43,422,000
Impairment charges											$ 0
Tanger Factory Outlet Centers, Inc. [Member]
Entity Information [Line Items]
Total revenues	$ 120,492,000	$ 118,994,000	$ 115,707,000	$ 123,155,000	$ 127,199,000	$ 124,236,000	$ 119,711,000	$ 123,535,000	478,348,000	$ 494,681,000	488,234,000
Net income (loss)	(12,379,000)	24,809,000	14,457,000	65,841,000	20,619,000	(23,031,000)	24,290,000	23,685,000	92,728,000	45,563,000	71,876,000
Net income attributable to Tanger Factory Outlet Centers, Inc.	(11,749,000)	23,546,000	13,727,000	62,331,000	19,707,000	(21,859,000)	22,969,000	22,838,000	87,855,000	43,655,000	68,002,000
Income (loss) available to common shareholders of Tanger Factory Outlet Centers, Inc.	$ (12,055,000)	$ 23,241,000	$ 13,613,000	$ 61,720,000	$ 19,385,000	$ (22,172,000)	$ 22,656,000	$ 22,575,000	$ 86,519,000	$ 42,444,000	$ 66,793,000
Basic earnings per common share:
Net income (in dollars per share)	$ (0.13)	$ 0.25	$ 0.15	$ 0.66	$ 0.21	$ (0.24)	$ 0.24	$ 0.24	$ 0.93	$ 0.45	$ 0.71
Diluted earnings per common share:
Net income (in dollars per share)	$ (0.13)	$ 0.25	$ 0.15	$ 0.66	$ 0.21	$ (0.24)	$ 0.24	$ 0.24	$ 0.93	$ 0.45	$ 0.71
Gain on sale of assets									$ 43,422,000	$ 0	$ 6,943,000
Impairment charges									37,610,000	49,739,000	0
Unconsolidated Properties [Member]
Entity Information [Line Items]
Total revenues									93,508,000	94,509,000	96,776,000
Net income (loss)									16,244,000	2,217,000	3,421,000
Diluted earnings per common share:
Impairment charges									0	14,359,000	18,042,000
Unconsolidated Properties [Member] | Bromont and Les Factories St. Sauveur [Member]
Diluted earnings per common share:
Impairment charges										14,359,000	18,042,000
Company's share of impairment charge					$ 7,200,000					$ 7,180,000	$ 9,021,000
Jeffersonville [Member]
Diluted earnings per common share:
Impairment charges	$ 37,600,000					$ 49,700,000						$ 85,400,000
Nags Head, Ocean City, Park City & Williamsburg [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Diluted earnings per common share:
Gain on sale of assets				$ 43,400,000					$ 43,422,000

Schedule III - Real Estate and

Schedule III - Real Estate and Accumulated Depreciation (Details) - USD ($)	3 Months Ended		12 Months Ended			24 Months Ended
	Dec. 31, 2019	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 83,803,000		$ 83,803,000			$ 83,803,000
Initial cost to Company, Land	250,120,000		250,120,000			250,120,000
Initial cost to Company, Buildings, Improvements & Fixtures	1,944,452,000		1,944,452,000			1,944,452,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	16,417,000		16,417,000			16,417,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	685,905,000		685,905,000			685,905,000
Gross Amount Carried at Close of Period, Land	266,537,000		266,537,000			266,537,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	2,630,357,000		2,630,357,000			2,630,357,000
Total	2,896,894,000		2,896,894,000			2,896,894,000
Accumulated Depreciation	1,009,951,000		1,009,951,000			1,009,951,000
Real estate, Federal income tax basis	3,000,000,000		$ 3,000,000,000			3,000,000,000
Buildings and improvements, estimated useful life			33 years
Land improvements, estimated useful life			15 years
Impairment charges					$ 0
Impairment write-off			$ 40,539,000	$ 77,958,000	0
Accumulated depreciation written off due to impairment			3,028,000	$ 30,050,000	$ 0
Atlantic City [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	32,531,000		32,531,000			32,531,000
Initial cost to Company, Land	0		0			0
Initial cost to Company, Buildings, Improvements & Fixtures	125,988,000		125,988,000			125,988,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	9,451,000		9,451,000			9,451,000
Gross Amount Carried at Close of Period, Land	0		0			0
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	135,439,000		135,439,000			135,439,000
Total	135,439,000		135,439,000			135,439,000
Accumulated Depreciation	36,927,000		36,927,000			36,927,000
Blowing Rock [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	1,963,000		1,963,000			1,963,000
Initial cost to Company, Buildings, Improvements & Fixtures	9,424,000		9,424,000			9,424,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	10,469,000		10,469,000			10,469,000
Gross Amount Carried at Close of Period, Land	1,963,000		1,963,000			1,963,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	19,893,000		19,893,000			19,893,000
Total	21,856,000		21,856,000			21,856,000
Accumulated Depreciation	11,195,000		11,195,000			11,195,000
Branson [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	4,407,000		4,407,000			4,407,000
Initial cost to Company, Buildings, Improvements & Fixtures	25,040,000		25,040,000			25,040,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	396,000		396,000			396,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	25,097,000		25,097,000			25,097,000
Gross Amount Carried at Close of Period, Land	4,803,000		4,803,000			4,803,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	50,137,000		50,137,000			50,137,000
Total	54,940,000		54,940,000			54,940,000
Accumulated Depreciation	32,789,000		32,789,000			32,789,000
Charleston [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	10,353,000		10,353,000			10,353,000
Initial cost to Company, Buildings, Improvements & Fixtures	48,877,000		48,877,000			48,877,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	17,173,000		17,173,000			17,173,000
Gross Amount Carried at Close of Period, Land	10,353,000		10,353,000			10,353,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	66,050,000		66,050,000			66,050,000
Total	76,403,000		76,403,000			76,403,000
Accumulated Depreciation	32,984,000		32,984,000			32,984,000
Commerce [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	1,262,000		1,262,000			1,262,000
Initial cost to Company, Buildings, Improvements & Fixtures	14,046,000		14,046,000			14,046,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	707,000		707,000			707,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	36,896,000		36,896,000			36,896,000
Gross Amount Carried at Close of Period, Land	1,969,000		1,969,000			1,969,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	50,942,000		50,942,000			50,942,000
Total	52,911,000		52,911,000			52,911,000
Accumulated Depreciation	34,814,000		34,814,000			34,814,000
Daytona Beach [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	9,913,000		9,913,000			9,913,000
Initial cost to Company, Buildings, Improvements & Fixtures	80,410,000		80,410,000			80,410,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	791,000		791,000			791,000
Gross Amount Carried at Close of Period, Land	9,913,000		9,913,000			9,913,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	81,201,000		81,201,000			81,201,000
Total	91,114,000		91,114,000			91,114,000
Accumulated Depreciation	14,862,000		14,862,000			14,862,000
Deer Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	82,413,000		82,413,000			82,413,000
Initial cost to Company, Buildings, Improvements & Fixtures	173,044,000		173,044,000			173,044,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	17,076,000		17,076,000			17,076,000
Gross Amount Carried at Close of Period, Land	82,413,000		82,413,000			82,413,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	190,120,000		190,120,000			190,120,000
Total	272,533,000		272,533,000			272,533,000
Accumulated Depreciation	46,951,000		46,951,000			46,951,000
Foley [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	4,400,000		4,400,000			4,400,000
Initial cost to Company, Buildings, Improvements & Fixtures	82,410,000		82,410,000			82,410,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	693,000		693,000			693,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	42,259,000		42,259,000			42,259,000
Gross Amount Carried at Close of Period, Land	5,093,000		5,093,000			5,093,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	124,669,000		124,669,000			124,669,000
Total	129,762,000		129,762,000			129,762,000
Accumulated Depreciation	62,616,000		62,616,000			62,616,000
Fort Worth [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	11,157,000		11,157,000			11,157,000
Initial cost to Company, Buildings, Improvements & Fixtures	87,025,000		87,025,000			87,025,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	159,000		159,000			159,000
Gross Amount Carried at Close of Period, Land	11,157,000		11,157,000			11,157,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	87,184,000		87,184,000			87,184,000
Total	98,341,000		98,341,000			98,341,000
Accumulated Depreciation	10,335,000		10,335,000			10,335,000
Foxwoods [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	0		0			0
Initial cost to Company, Buildings, Improvements & Fixtures	130,941,000		130,941,000			130,941,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	1,281,000		1,281,000			1,281,000
Gross Amount Carried at Close of Period, Land	0		0			0
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	132,222,000		132,222,000			132,222,000
Total	132,222,000		132,222,000			132,222,000
Accumulated Depreciation	25,949,000		25,949,000			25,949,000
Gonzales [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	679,000		679,000			679,000
Initial cost to Company, Buildings, Improvements & Fixtures	15,895,000		15,895,000			15,895,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	34,987,000		34,987,000			34,987,000
Gross Amount Carried at Close of Period, Land	679,000		679,000			679,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	50,882,000		50,882,000			50,882,000
Total	51,561,000		51,561,000			51,561,000
Accumulated Depreciation	35,269,000		35,269,000			35,269,000
Grand Rapids [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	8,180,000		8,180,000			8,180,000
Initial cost to Company, Buildings, Improvements & Fixtures	75,420,000		75,420,000			75,420,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	2,439,000		2,439,000			2,439,000
Gross Amount Carried at Close of Period, Land	8,180,000		8,180,000			8,180,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	77,859,000		77,859,000			77,859,000
Total	86,039,000		86,039,000			86,039,000
Accumulated Depreciation	18,246,000		18,246,000			18,246,000
Hershey [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	3,673,000		3,673,000			3,673,000
Initial cost to Company, Buildings, Improvements & Fixtures	48,186,000		48,186,000			48,186,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	6,466,000		6,466,000			6,466,000
Gross Amount Carried at Close of Period, Land	3,673,000		3,673,000			3,673,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	54,652,000		54,652,000			54,652,000
Total	58,325,000		58,325,000			58,325,000
Accumulated Depreciation	16,666,000		16,666,000			16,666,000
Hilton Head I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	4,753,000		4,753,000			4,753,000
Initial cost to Company, Buildings, Improvements & Fixtures	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	33,684,000		33,684,000			33,684,000
Gross Amount Carried at Close of Period, Land	4,753,000		4,753,000			4,753,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	33,684,000		33,684,000			33,684,000
Total	38,437,000		38,437,000			38,437,000
Accumulated Depreciation	15,697,000		15,697,000			15,697,000
Hilton Head II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	5,128,000		5,128,000			5,128,000
Initial cost to Company, Buildings, Improvements & Fixtures	20,668,000		20,668,000			20,668,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	13,816,000		13,816,000			13,816,000
Gross Amount Carried at Close of Period, Land	5,128,000		5,128,000			5,128,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	34,484,000		34,484,000			34,484,000
Total	39,612,000		39,612,000			39,612,000
Accumulated Depreciation	17,857,000		17,857,000			17,857,000
Howell [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	2,250,000		2,250,000			2,250,000
Initial cost to Company, Buildings, Improvements & Fixtures	35,250,000		35,250,000			35,250,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	15,895,000		15,895,000			15,895,000
Gross Amount Carried at Close of Period, Land	2,250,000		2,250,000			2,250,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	51,145,000		51,145,000			51,145,000
Total	53,395,000		53,395,000			53,395,000
Accumulated Depreciation	26,914,000		26,914,000			26,914,000
Jeffersonville [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	2,752,000		2,752,000			2,752,000
Initial cost to Company, Buildings, Improvements & Fixtures	111,276,000		111,276,000			111,276,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	(2,452,000)		(2,452,000)			(2,452,000)
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	(101,576,000)		(101,576,000)			(101,576,000)
Gross Amount Carried at Close of Period, Land	300,000		300,000			300,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	9,700,000		9,700,000			9,700,000
Total	10,000,000		10,000,000			10,000,000
Accumulated Depreciation	21,000		21,000			21,000
Impairment charges	37,600,000	$ 49,700,000				85,400,000
Accumulated depreciation written off due to impairment						33,100,000
Lancaster [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	3,691,000		3,691,000			3,691,000
Initial cost to Company, Buildings, Improvements & Fixtures	19,907,000		19,907,000			19,907,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	6,656,000		6,656,000			6,656,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	60,706,000		60,706,000			60,706,000
Gross Amount Carried at Close of Period, Land	10,347,000		10,347,000			10,347,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	80,613,000		80,613,000			80,613,000
Total	90,960,000		90,960,000			90,960,000
Accumulated Depreciation	32,751,000		32,751,000			32,751,000
Locust Grove [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	2,558,000		2,558,000			2,558,000
Initial cost to Company, Buildings, Improvements & Fixtures	11,801,000		11,801,000			11,801,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	57,000		57,000			57,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	33,185,000		33,185,000			33,185,000
Gross Amount Carried at Close of Period, Land	2,615,000		2,615,000			2,615,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	44,986,000		44,986,000			44,986,000
Total	47,601,000		47,601,000			47,601,000
Accumulated Depreciation	27,976,000		27,976,000			27,976,000
Mebane [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	8,821,000		8,821,000			8,821,000
Initial cost to Company, Buildings, Improvements & Fixtures	53,362,000		53,362,000			53,362,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	5,663,000		5,663,000			5,663,000
Gross Amount Carried at Close of Period, Land	8,821,000		8,821,000			8,821,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	59,025,000		59,025,000			59,025,000
Total	67,846,000		67,846,000			67,846,000
Accumulated Depreciation	28,524,000		28,524,000			28,524,000
Mytrle Beach Hwy 17 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	0		0			0
Initial cost to Company, Buildings, Improvements & Fixtures	80,733,000		80,733,000			80,733,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	28,742,000		28,742,000			28,742,000
Gross Amount Carried at Close of Period, Land	0		0			0
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	109,475,000		109,475,000			109,475,000
Total	109,475,000		109,475,000			109,475,000
Accumulated Depreciation	37,699,000		37,699,000			37,699,000
Myrtle Beach Hwy 501 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	8,781,000		8,781,000			8,781,000
Initial cost to Company, Buildings, Improvements & Fixtures	56,798,000		56,798,000			56,798,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	42,046,000		42,046,000			42,046,000
Gross Amount Carried at Close of Period, Land	8,781,000		8,781,000			8,781,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	98,844,000		98,844,000			98,844,000
Total	107,625,000		107,625,000			107,625,000
Accumulated Depreciation	47,849,000		47,849,000			47,849,000
Pittsburgh [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	5,528,000		5,528,000			5,528,000
Initial cost to Company, Buildings, Improvements & Fixtures	91,288,000		91,288,000			91,288,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	3,000		3,000			3,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	13,909,000		13,909,000			13,909,000
Gross Amount Carried at Close of Period, Land	5,531,000		5,531,000			5,531,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	105,197,000		105,197,000			105,197,000
Total	110,728,000		110,728,000			110,728,000
Accumulated Depreciation	58,455,000		58,455,000			58,455,000
Rehoboth Beach [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	20,600,000		20,600,000			20,600,000
Initial cost to Company, Buildings, Improvements & Fixtures	74,209,000		74,209,000			74,209,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	1,875,000		1,875,000			1,875,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	56,705,000		56,705,000			56,705,000
Gross Amount Carried at Close of Period, Land	22,475,000		22,475,000			22,475,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	130,914,000		130,914,000			130,914,000
Total	153,389,000		153,389,000			153,389,000
Accumulated Depreciation	55,904,000		55,904,000			55,904,000
Riverhead [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	0		0			0
Initial cost to Company, Buildings, Improvements & Fixtures	36,374,000		36,374,000			36,374,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	6,152,000		6,152,000			6,152,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	134,514,000		134,514,000			134,514,000
Gross Amount Carried at Close of Period, Land	6,152,000		6,152,000			6,152,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	170,888,000		170,888,000			170,888,000
Total	177,040,000		177,040,000			177,040,000
Accumulated Depreciation	100,686,000		100,686,000			100,686,000
San Marcos [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	1,801,000		1,801,000			1,801,000
Initial cost to Company, Buildings, Improvements & Fixtures	9,440,000		9,440,000			9,440,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	2,301,000		2,301,000			2,301,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	59,157,000		59,157,000			59,157,000
Gross Amount Carried at Close of Period, Land	4,102,000		4,102,000			4,102,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	68,597,000		68,597,000			68,597,000
Total	72,699,000		72,699,000			72,699,000
Accumulated Depreciation	45,384,000		45,384,000			45,384,000
Savannah [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	8,432,000		8,432,000			8,432,000
Initial cost to Company, Buildings, Improvements & Fixtures	167,780,000		167,780,000			167,780,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	3,870,000		3,870,000			3,870,000
Gross Amount Carried at Close of Period, Land	8,432,000		8,432,000			8,432,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	171,650,000		171,650,000			171,650,000
Total	180,082,000		180,082,000			180,082,000
Accumulated Depreciation	21,432,000		21,432,000			21,432,000
Sevierville [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	0		0			0
Initial cost to Company, Buildings, Improvements & Fixtures	18,495,000		18,495,000			18,495,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	51,339,000		51,339,000			51,339,000
Gross Amount Carried at Close of Period, Land	0		0			0
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	69,834,000		69,834,000			69,834,000
Total	69,834,000		69,834,000			69,834,000
Accumulated Depreciation	41,527,000		41,527,000			41,527,000
Southaven [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	51,272,000		51,272,000			51,272,000
Initial cost to Company, Land	14,959,000		14,959,000			14,959,000
Initial cost to Company, Buildings, Improvements & Fixtures	60,263,000		60,263,000			60,263,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	675,000		675,000			675,000
Gross Amount Carried at Close of Period, Land	14,959,000		14,959,000			14,959,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	60,938,000		60,938,000			60,938,000
Total	75,897,000		75,897,000			75,897,000
Accumulated Depreciation	16,047,000		16,047,000			16,047,000
Terrell [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	523,000		523,000			523,000
Initial cost to Company, Buildings, Improvements & Fixtures	13,432,000		13,432,000			13,432,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	10,089,000		10,089,000			10,089,000
Gross Amount Carried at Close of Period, Land	523,000		523,000			523,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	23,521,000		23,521,000			23,521,000
Total	24,044,000		24,044,000			24,044,000
Accumulated Depreciation	19,154,000		19,154,000			19,154,000
Tilton [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	1,800,000		1,800,000			1,800,000
Initial cost to Company, Buildings, Improvements & Fixtures	24,838,000		24,838,000			24,838,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	29,000		29,000			29,000
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	14,274,000		14,274,000			14,274,000
Gross Amount Carried at Close of Period, Land	1,829,000		1,829,000			1,829,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	39,112,000		39,112,000			39,112,000
Total	40,941,000		40,941,000			40,941,000
Accumulated Depreciation	19,468,000		19,468,000			19,468,000
Westgate [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	19,037,000		19,037,000			19,037,000
Initial cost to Company, Buildings, Improvements & Fixtures	140,337,000		140,337,000			140,337,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	4,668,000		4,668,000			4,668,000
Gross Amount Carried at Close of Period, Land	19,037,000		19,037,000			19,037,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	145,005,000		145,005,000			145,005,000
Total	164,042,000		164,042,000			164,042,000
Accumulated Depreciation	16,721,000		16,721,000			16,721,000
Other [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0		0			0
Initial cost to Company, Land	306,000		306,000			306,000
Initial cost to Company, Buildings, Improvements & Fixtures	1,495,000		1,495,000			1,495,000
Costs Capitalized Subsequent to Acquisition (Improvements), Land	0		0			0
Costs Capitalized Subsequent to Acquisition (Improvements), Buildings, Improvements & Fixtures	0		0			0
Gross Amount Carried at Close of Period, Land	306,000		306,000			306,000
Gross Amount Carried at Close of Period, Buildings, Improvements & Fixtures	1,495,000		1,495,000			1,495,000
Total	1,801,000		1,801,000			1,801,000
Accumulated Depreciation	$ 282,000		$ 282,000			282,000
Land [Member] | Jeffersonville [Member]
Real Estate and Accumulated Depreciation [Line Items]
Impairment write-off						2,500,000
Building and Building Improvements [Member] | Jeffersonville [Member]
Real Estate and Accumulated Depreciation [Line Items]
Impairment write-off						$ 116,000,000

Schedule III - Reconciliation o

Schedule III - Reconciliation of Real Estate Property (Details) - USD ($) $ in Thousands	12 Months Ended			24 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance, beginning of year	$ 3,046,179	$ 3,088,470	$ 2,965,907	$ 3,088,470
Improvements	50,117	48,357	175,868
Impairment charge	(40,539)	(77,958)	0
Dispositions and other	(158,863)	(12,690)	(53,305)
Balance, end of year	$ 2,896,894	$ 3,046,179	$ 3,088,470	$ 2,896,894

Schedule III - Reconciliation_2

Schedule III - Reconciliation of Accumulated Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended			24 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, beginning of year	$ 981,305	$ 901,967	$ 814,583	$ 901,967
Depreciation for the period	107,129	114,198	107,845
Impairment charge	(3,028)	(30,050)	0
Dispositions and other	(75,455)	(4,810)	(20,461)
Balance, end of year	$ 1,009,951	$ 981,305	$ 901,967	$ 1,009,951