Earnings Per Share of the Company (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net income attributable to Tanger Factory Outlet Centers, Inc.	$ 20,518	$ 4,133
Less allocation of earnings to participating securities	(215)	(207)
Net income (loss) available to common shareholders/unitholders	$ 20,303	$ 3,926
Denominator:
Basic weighted average common shares (in shares)	103,520	94,812
Effect of notional units (in units)	802	288
Effect of outstanding options (in shares)	736	717
Diluted weighted average common shares (in shares)	105,058	95,817
Basic earnings per common share/unit:
Net income (in dollars per share)	$ 0.20	$ 0.04
Diluted earnings per common share:
Net income (in dollars per share)	$ 0.19	$ 0.04
Effect of notional units (in shares)	139	1,100
Anti-dilutive options excluded (in shares)	297	403