CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
FINANCING ACTIVITIES
Proceeds from the Company's common share offering	$ 180,876	$ 0
Tanger Factory Outlet Centers, Inc. [Member]
OPERATING ACTIVITIES
Net income (loss)	6,938	(52,009)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	55,882	58,063
Impairment charge	0	45,675
Amortization of deferred financing costs	2,320	1,590
Loss on early extinguishment of debt	14,039	0
Equity in (earnings) losses of unconsolidated joint ventures	(4,497)	1,448
Equity-based compensation expense	6,608	7,219
Amortization of debt (premiums) and discounts, net	210	237
Amortization (accretion) of market rent rate adjustments, net	25	411
Straight-line rent adjustments	1,521	677
Distributions of cumulative earnings from unconsolidated joint ventures	4,774	2,092
Other non-cash	3,638	0
Changes in other assets and liabilities:
Other assets	12,619	(35,587)
Accounts payable and accrued expenses	(12,472)	(15,572)
Net cash provided by operating activities	91,605	14,244
INVESTING ACTIVITIES
Additions to rental property	(11,836)	(16,476)
Additions to investments in unconsolidated joint ventures	(7,000)	(5,601)
Net proceeds from sale of assets	8,129	0
Additions to non-real estate assets	(781)	(1,191)
Distributions in excess of cumulative earnings from unconsolidated joint ventures	13,364	3,093
Additions to deferred lease costs	(4,562)	(1,655)
Other investing activities	6,695	5,009
Net cash provided by (used in) investing activities	4,009	(16,821)
FINANCING ACTIVITIES
Cash dividends paid	(34,875)	(66,563)
Distributions to noncontrolling interests in Operating Partnership	(1,702)	(3,499)
Proceeds from revolving credit facility	0	634,030
Repayments of revolving credit facility	0	(234,200)
Repayments of notes, mortgages and loans	(201,861)	(1,758)
Payment of make-whole premium related to early extinguishment of debt	(12,954)	0
Employee income taxes paid related to shares withheld upon vesting of equity awards	(1,637)	(736)
Additions to deferred financing costs	(123)	(1,797)
Proceeds from exercise of options	89	0
Proceeds from the Company's common share offering	180,876	0
Proceeds from other financing activities	0	72
Payment for other financing activities	(574)	(835)
Net cash provided by (used in) financing activities	(72,761)	324,714
Effect of foreign currency rate changes on cash and cash equivalents	(73)	(203)
Net increase in cash and cash equivalents	22,780	321,934
Cash and cash equivalents, beginning of period	84,832	16,672
Cash and cash equivalents, end of period	107,612	338,606
Tanger Properties Limited Partnership [Member]
OPERATING ACTIVITIES
Net income (loss)	6,938	(52,009)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	55,882	58,063
Impairment charge	0	45,675
Amortization of deferred financing costs	2,320	1,590
Loss on early extinguishment of debt	14,039	0
Equity in (earnings) losses of unconsolidated joint ventures	(4,497)	1,448
Equity-based compensation expense	6,608	7,219
Amortization of debt (premiums) and discounts, net	210	237
Amortization (accretion) of market rent rate adjustments, net	25	411
Straight-line rent adjustments	1,521	677
Distributions of cumulative earnings from unconsolidated joint ventures	4,774	2,092
Other non-cash	3,638	0
Changes in other assets and liabilities:
Other assets	12,454	(35,696)
Accounts payable and accrued expenses	(12,633)	(15,490)
Net cash provided by operating activities	91,279	14,217
INVESTING ACTIVITIES
Additions to rental property	(11,836)	(16,476)
Additions to investments in unconsolidated joint ventures	(7,000)	(5,601)
Net proceeds from sale of assets	8,129	0
Additions to non-real estate assets	(781)	(1,191)
Distributions in excess of cumulative earnings from unconsolidated joint ventures	13,364	3,093
Additions to deferred lease costs	(4,562)	(1,655)
Other investing activities	6,695	5,009
Net cash provided by (used in) investing activities	4,009	(16,821)
FINANCING ACTIVITIES
Cash dividends paid	(36,577)	(70,062)
Proceeds from revolving credit facility	0	634,030
Repayments of revolving credit facility	0	(234,200)
Repayments of notes, mortgages and loans	(201,861)	(1,758)
Payment of make-whole premium related to early extinguishment of debt	(12,954)	0
Employee income taxes paid related to shares withheld upon vesting of equity awards	(1,637)	(736)
Additions to deferred financing costs	(123)	(1,797)
Proceeds from exercise of options	89	0
Proceeds from the Company's common share offering	180,876	0
Proceeds from other financing activities	0	72
Payment for other financing activities	(574)	(835)
Net cash provided by (used in) financing activities	(72,761)	324,714
Effect of foreign currency rate changes on cash and cash equivalents	(73)	(203)
Net increase in cash and cash equivalents	22,454	321,907
Cash and cash equivalents, beginning of period	84,750	16,519
Cash and cash equivalents, end of period	$ 107,204	$ 338,426