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Quarterly Financial Data of the Company (Unaudited) (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |
Impairment charge |  |  |  |  |  |  |  |  |  | $ 0 | $ 0
Tanger Factory Outlet Centers, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |
Entity Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenues | $ 127,199,000 | $ 124,236,000 | $ 119,711,000 | $ 123,535,000 | $ 126,487,000 | $ 120,765,000 | $ 119,614,000 | $ 121,368,000 | $ 494,681,000 | 488,234,000 | 465,834,000
Net income (loss) | 20,619,000 | (23,031,000) | 24,290,000 | 23,685,000 | 33,449,000 | (16,034,000) | 30,947,000 | 23,514,000 | 45,563,000 | 71,876,000 | 204,329,000
Net income attributable to Tanger Factory Outlet Centers, Inc. | 19,707,000 | (21,859,000) | 22,969,000 | 22,838,000 | 31,495,000 | (15,219,000) | 29,390,000 | 22,336,000 | 43,655,000 | 68,002,000 | 193,744,000
Income (loss) available to common shareholders of Tanger Factory Outlet Centers, Inc. | $ 19,385,000 | $ (22,172,000) | $ 22,656,000 | $ 22,575,000 | $ 31,193,000 | $ (15,525,000) | $ 29,084,000 | $ 22,041,000 | $ 42,444,000 | $ 66,793,000 | $ 191,818,000
Basic earnings per common share: |  |  |  |  |  |  |  |  |  |  |
Net income (in dollars per share) | $ 0.21 | $ (0.24) | $ 0.24 | $ 0.24 | $ 0.33 | $ (0.17) | $ 0.31 | $ 0.23 | $ 0.45 | $ 0.71 | $ 2.02
Diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |
Net income (in dollars per share) | $ 0.21 | $ (0.24) | $ 0.24 | $ 0.24 | $ 0.33 | $ (0.17) | $ 0.31 | $ 0.23 | $ 0.45 | $ 0.71 | $ 2.01
Impairment charge |  |  |  |  |  |  |  |  | $ 49,739,000 | $ 0 | $ 0
Gain on sale of assets |  |  |  |  |  |  | $ 6,900,000 |  | 0 | 6,943,000 | 6,305,000
Loss on early extinguishment of debt |  |  |  |  |  | $ 35,600,000 |  |  | 0 | 35,626,000 | 0
Unconsolidated Properties [Member] |  |  |  |  |  |  |  |  |  |  |
Entity Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 94,509,000 | 96,776,000 | 106,766,000
Net income (loss) |  |  |  |  |  |  |  |  | 2,217,000 | 3,421,000 | 19,133,000
Diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |
Impairment charge |  |  |  |  |  |  |  |  | 14,359,000 | 18,042,000 | $ 5,838,000
Unconsolidated Properties [Member] | Bromont and Les Factories St. Sauveur [Member] |  |  |  |  |  |  |  |  |  |  |
Diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |
Impairment charge |  |  |  |  |  |  |  |  | 14,359,000 | 18,042,000 |
Company's share of impairment charge | $ 7,200,000 |  |  |  |  |  |  |  | 7,180,000 | $ 9,021,000 |
Unconsolidated Properties [Member] | Bromont and Les Factories St. Sauveur [Member] | Tanger Factory Outlet Centers, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |
Diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |
Company's share of impairment charge |  |  |  |  |  | $ 9,000,000 |  |  |  |  |
Jeffersonville [Member] |  |  |  |  |  |  |  |  |  |  |
Diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |
Impairment charge |  | $ 49,700,000 |  |  |  |  |  |  | $ 47,900,000 |  |

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