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Shareholders' Equity of the Company (Tables) | 12 Months Ended
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Dec. 31, 2018
Share repurchase program [Table Text Block] | Shares repurchased during the years ended December 31, 2018 and 2017 were as follows:
|  | Year Ended December 31,
|  | 2018 |  | 2017
Total number of shares purchased |  | 919,249 |  |  | 1,911,585 |
Average price paid per share |  | $ | 21.74 |  |  | $ | 25.80 |
Total price paid exclusive of commissions and related fees (in thousands) |  | $ | 19,980 |  |  | $ | 49,324 |
Tanger Factory Outlet Centers, Inc. [Member] |
Schedule of Shareholders equity of the Company [Table Text Block] | The following table sets forth the number of Class A common limited partnership units exchanged for an equal number of common shares for the years ended December 31, 2018, 2017 and 2016:
|  | 2018 |  | 2017 |  | 2016
Exchange of Class A limited partnership units |  | 34,749 |  |  | 32,348 |  |  | 24,962 |

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