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Equity-Based Compensation of the Operating Partnership (Restricted Unit Activity) (Details) (Restricted Units [Member], Tanger Properties Limited Partnership [Member]) | 3 Months Ended
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Mar. 31, 2013 Units
Restricted Units [Member] | Tanger Properties Limited Partnership [Member] |
Schedule of Restricted Unit Activity [Line Items] |
Unvested at December 31, 2012 | 261,998
Granted | 87,343
Vested | (72,350)
Forfeited | (3,000)
Unvested at March 31, 2013 | 273,991
Unvested at December 31, 2012 (in dollars per share) | 97.56
Granted (in dollars per share) | 124.04
Vested (in dollars per share) | 89.40
Forfeited (in dollars per share) | 102.44
Unvested at March 31, 2013 (in dollars per share) | 108.12

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