CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Tanger Factory Outlet Centers, Inc. [Member]
OPERATING ACTIVITIES
Net income (loss)	$ (28,119)	$ 65,841
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	29,417	31,760
Impairment charge	45,675	0
Amortization of deferred financing costs	757	747
Gain on sale of assets	0	(43,422)
Equity in earnings of unconsolidated joint ventures	(1,527)	(1,629)
Equity-based compensation expense	3,789	3,818
Amortization of debt (premiums) and discounts, net	118	109
Amortization (accretion) of market rent rate adjustments, net	362	480
Straight-line rent adjustments	(1,872)	(1,970)
Distributions of cumulative earnings from unconsolidated joint ventures	1,517	1,455
Changes in other assets and liabilities:
Other assets	2,210	873
Accounts payable and accrued expenses	(25,045)	(24,894)
Net cash provided by operating activities	27,282	33,168
INVESTING ACTIVITIES
Additions to rental property	(10,551)	(9,906)
Additions to investments in unconsolidated joint ventures	(261)	(779)
Net proceeds from sale of assets	0	128,248
Additions to non-real estate assets	(677)	(174)
Distributions in excess of cumulative earnings from unconsolidated joint ventures	3,488	8,157
Additions to deferred lease costs	(1,220)	(1,209)
Other investing activities	2,844	2,936
Net cash provided by (used) in investing activities	(6,377)	127,273
FINANCING ACTIVITIES
Cash dividends paid	(33,034)	(32,910)
Distributions to noncontrolling interests in Operating Partnership	(1,744)	(1,735)
Proceeds from revolving credit facility	634,030	135,200
Repayments of revolving credit facility	(34,200)	(265,300)
Repayments of notes, mortgages and loans	(873)	(825)
Employee income taxes paid related to shares withheld upon vesting of equity awards	(736)	(1,781)
Additions to deferred financing costs	(65)	(65)
Proceeds from other financing activities	72	18
Payment for other financing activities	(549)	(500)
Net cash provided by (used) in financing activities	562,901	(167,898)
Effect of foreign currency rate changes on cash and cash equivalents	(24)	(10)
Net increase (decrease) in cash and cash equivalents	583,782	(7,467)
Cash and cash equivalents, beginning of period	16,672	9,083
Cash and cash equivalents, end of period	600,454	1,616
Tanger Properties Limited Partnership [Member]
OPERATING ACTIVITIES
Net income (loss)	(28,119)	65,841
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	29,417	31,760
Impairment charge	45,675	0
Amortization of deferred financing costs	757	747
Gain on sale of assets	0	(43,422)
Equity in earnings of unconsolidated joint ventures	(1,527)	(1,629)
Equity-based compensation expense	3,789	3,818
Amortization of debt (premiums) and discounts, net	118	109
Amortization (accretion) of market rent rate adjustments, net	362	480
Straight-line rent adjustments	(1,872)	(1,970)
Distributions of cumulative earnings from unconsolidated joint ventures	1,517	1,455
Changes in other assets and liabilities:
Other assets	2,552	1,001
Accounts payable and accrued expenses	(25,329)	(24,976)
Net cash provided by operating activities	27,340	33,214
INVESTING ACTIVITIES
Additions to rental property	(10,551)	(9,906)
Additions to investments in unconsolidated joint ventures	(261)	(779)
Net proceeds from sale of assets	0	128,248
Additions to non-real estate assets	(677)	(174)
Distributions in excess of cumulative earnings from unconsolidated joint ventures	3,488	8,157
Additions to deferred lease costs	(1,220)	(1,209)
Other investing activities	2,844	2,936
Net cash provided by (used) in investing activities	(6,377)	127,273
FINANCING ACTIVITIES
Cash dividends paid	(34,778)	(34,645)
Proceeds from revolving credit facility	634,030	135,200
Repayments of revolving credit facility	(34,200)	(265,300)
Repayments of notes, mortgages and loans	(873)	(825)
Employee income taxes paid related to shares withheld upon vesting of equity awards	(736)	(1,781)
Additions to deferred financing costs	(65)	(65)
Proceeds from other financing activities	72	18
Payment for other financing activities	(549)	(500)
Net cash provided by (used) in financing activities	562,901	(167,898)
Effect of foreign currency rate changes on cash and cash equivalents	(24)	(10)
Net increase (decrease) in cash and cash equivalents	583,840	(7,421)
Cash and cash equivalents, beginning of period	16,519	8,991
Cash and cash equivalents, end of period	$ 600,359	$ 1,570