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Debt Guaranteed by the Company (Tables) | 3 Months Ended
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Mar. 31, 2021
Tanger Factory Outlet Centers, Inc. [Member] |
Debt Instrument [Line Items] |
Schedule of Debt | The Operating Partnership had the following principal amounts outstanding on the debt guaranteed by the Company (in thousands):
|  | As of
|  | March 31, 2021 |  | December 31, 2020
Unsecured lines of credit |  | $ | — |  |  | $ | — |
Unsecured term loan |  | $ | 325,000 |  |  | $ | 350,000 |

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