CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Tanger Factory Outlet Centers, Inc. [Member]
OPERATING ACTIVITIES
Net income (loss)	$ (52,009)	$ 80,298
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	58,063	62,906
Impairment charge	45,675	0
Amortization of deferred financing costs	1,590	1,497
Gain on sale of assets	0	(43,422)
Equity in (earnings) losses of unconsolidated joint ventures	1,448	(3,275)
Equity-based compensation expense	7,219	10,799
Amortization of debt (premiums) and discounts, net	237	220
Amortization (accretion) of market rent rate adjustments, net	411	753
Straight-line rent adjustments	677	(4,886)
Distributions of cumulative earnings from unconsolidated joint ventures	2,092	3,154
Other non-cash	0	3,638
Changes in other assets and liabilities:
Other assets	(35,587)	(577)
Accounts payable and accrued expenses	(15,572)	(18,384)
Net cash provided by operating activities	14,244	92,721
INVESTING ACTIVITIES
Additions to rental property	(16,476)	(22,402)
Additions to investments in unconsolidated joint ventures	(5,601)	(1,695)
Net proceeds from sale of assets	0	128,248
Additions to non-real estate assets	(1,191)	(480)
Distributions in excess of cumulative earnings from unconsolidated joint ventures	3,093	12,303
Additions to deferred lease costs	(1,655)	(4,119)
Other investing activities	5,009	4,476
Net cash provided by (used) in investing activities	(16,821)	116,331
FINANCING ACTIVITIES
Cash dividends paid	(66,563)	(66,368)
Distributions to noncontrolling interests in Operating Partnership	(3,499)	(3,496)
Proceeds from revolving credit facility	634,030	207,500
Repayments of revolving credit facility	(234,200)	(334,100)
Repayments of notes, mortgages and loans	(1,758)	(1,661)
Repurchase of common shares, including transaction costs	0	(10,000)
Employee income taxes paid related to shares withheld upon vesting of equity awards	(736)	(1,781)
Additions to deferred financing costs	(1,797)	(65)
Proceeds from other financing activities	72	36
Payment for other financing activities	(835)	(805)
Net cash provided by (used) in financing activities	324,714	(210,740)
Effect of foreign currency rate changes on cash and cash equivalents	(203)	(16)
Net increase (decrease) in cash and cash equivalents	321,934	(1,704)
Cash and cash equivalents, beginning of period	16,672	9,083
Cash and cash equivalents, end of period	338,606	7,379
Tanger Properties Limited Partnership [Member]
OPERATING ACTIVITIES
Net income (loss)	(52,009)	80,298
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	58,063	62,906
Impairment charge	45,675	0
Amortization of deferred financing costs	1,590	1,497
Gain on sale of assets	0	(43,422)
Equity in (earnings) losses of unconsolidated joint ventures	1,448	(3,275)
Equity-based compensation expense	7,219	10,799
Amortization of debt (premiums) and discounts, net	237	220
Amortization (accretion) of market rent rate adjustments, net	411	753
Straight-line rent adjustments	677	(4,886)
Distributions of cumulative earnings from unconsolidated joint ventures	2,092	3,154
Other non-cash	0	3,638
Changes in other assets and liabilities:
Other assets	(35,696)	(562)
Accounts payable and accrued expenses	(15,490)	(18,341)
Net cash provided by operating activities	14,217	92,779
INVESTING ACTIVITIES
Additions to rental property	(16,476)	(22,402)
Additions to investments in unconsolidated joint ventures	(5,601)	(1,695)
Net proceeds from sale of assets	0	128,248
Additions to non-real estate assets	(1,191)	(480)
Distributions in excess of cumulative earnings from unconsolidated joint ventures	3,093	12,303
Additions to deferred lease costs	(1,655)	(4,119)
Other investing activities	5,009	4,476
Net cash provided by (used) in investing activities	(16,821)	116,331
FINANCING ACTIVITIES
Cash dividends paid	(70,062)	(69,864)
Proceeds from revolving credit facility	634,030	207,500
Repayments of revolving credit facility	(234,200)	(334,100)
Repayments of notes, mortgages and loans	(1,758)	(1,661)
Repurchase of common shares, including transaction costs	0	(10,000)
Employee income taxes paid related to shares withheld upon vesting of equity awards	(736)	(1,781)
Additions to deferred financing costs	(1,797)	(65)
Proceeds from other financing activities	72	36
Payment for other financing activities	(835)	(805)
Net cash provided by (used) in financing activities	324,714	(210,740)
Effect of foreign currency rate changes on cash and cash equivalents	(203)	(16)
Net increase (decrease) in cash and cash equivalents	321,907	(1,646)
Cash and cash equivalents, beginning of period	16,519	8,991
Cash and cash equivalents, end of period	$ 338,426	$ 7,345