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Equity-Based Compensation - Outperformance Plan (Details) - Tanger Factory Outlet Centers, Inc. [Member] - Performance Shares [Member] - $ / shares | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Granted (in dollars per share) |  | $ 12.42 | $ 16.60 | $ 15.10 |  |
Granted |  | 409,972 | 296,400 | 321,900 |  |
Vested |  | 0 | 184,455 |  |  |
2018 OPP [Member] |  |  |  |  |  |
Maximum number of restricted common shares that may be earned |  | 409,972 |  |  |  |
Granted (in dollars per share) |  | $ 12.42 |  |  |  |
2017 OPP [Member] |  |  |  |  |  |
Maximum number of restricted common shares that may be earned |  |  | 296,400 |  |  |
Granted (in dollars per share) |  |  | $ 16.60 |  |  |
2016 OPP [Member] |  |  |  |  |  |
Maximum number of restricted common shares that may be earned |  |  |  | 321,900 |  |
Granted (in dollars per share) |  |  |  | $ 15.10 |  |
2015 OPP [Member] |  |  |  |  |  |
Maximum number of restricted common shares that may be earned |  |  |  |  | 306,600 |
Granted (in dollars per share) |  |  |  |  | $ 15.85 |
2014 OPP [Member] |  |  |  |  |  |
Maximum number of restricted common shares that may be earned |  |  |  |  |  | 329,700
Granted (in dollars per share) |  |  |  |  |  | $ 14.71
Absolute portion [Member] | 2018 OPP [Member] |  |  |  |  |  |
Percent of total award |  | 33.30% |  |  |  |
Absolute portion [Member] | 2017 OPP [Member] |  |  |  |  |  |
Percent of total award |  |  | 50.00% |  |  |
Absolute portion [Member] | 2016 OPP [Member] |  |  |  |  |  |
Percent of total award |  |  |  | 50.00% |  |
Absolute portion [Member] | 2015 OPP [Member] |  |  |  |  |  |
Percent of total award |  |  |  |  | 60.00% |
Absolute portion [Member] | 2014 OPP [Member] |  |  |  |  |  |
Percent of total award |  |  |  |  |  | 70.00%
Granted | 184,000 |  |  |  |  |
Relative portion of award [Member] | 2018 OPP [Member] |  |  |  |  |  |
Percent of total award |  | 66.70% |  |  |  |
Relative portion of award [Member] | 2017 OPP [Member] |  |  |  |  |  |
Percent of total award |  |  | 50.00% |  |  |
Relative portion of award [Member] | 2016 OPP [Member] |  |  |  |  |  |
Percent of total award |  |  |  | 50.00% |  |
Relative portion of award [Member] | 2015 OPP [Member] |  |  |  |  |  |
Percent of total award |  |  |  |  | 40.00% |
Relative portion of award [Member] | 2014 OPP [Member] |  |  |  |  |  |
Percent of total award |  |  |  |  |  | 30.00%
Minimum [Member] | Absolute portion [Member] | 2018 OPP [Member] |  |  |  |  |  |
Absolute share price appreciation range |  | 19.10% |  |  |  |
Percentage of units to be earned |  | 20.00% |  |  |  |
Minimum [Member] | Absolute portion [Member] | 2017 OPP [Member] |  |  |  |  |  |
Absolute share price appreciation range |  |  | 18.00% |  |  |
Percentage of units to be earned |  |  | 20.00% |  |  |
Minimum [Member] | Absolute portion [Member] | 2016 OPP [Member] |  |  |  |  |  |
Absolute share price appreciation range |  |  |  | 18.00% |  |
Percentage of units to be earned |  |  |  | 20.00% |  |
Minimum [Member] | Absolute portion [Member] | 2015 OPP [Member] |  |  |  |  |  |
Absolute share price appreciation range |  |  |  |  | 25.00% |
Percentage of units to be earned |  |  |  |  | 33.00% |
Minimum [Member] | Absolute portion [Member] | 2014 OPP [Member] |  |  |  |  |  |
Absolute share price appreciation range |  |  |  |  |  | 25.00%
Percentage of units to be earned |  |  |  |  |  | 33.00%
Minimum [Member] | Relative portion of award [Member] | 2018 OPP [Member] |  |  |  |  |  |
Percentage of units to be earned |  | 20.00% |  |  |  |
Threshold Percentage for Performance Target |  | 30.00% |  |  |  |
Minimum [Member] | Relative portion of award [Member] | 2017 OPP [Member] |  |  |  |  |  |
Percentage of units to be earned |  |  | 20.00% |  |  |
Threshold Percentage for Performance Target |  |  | 40.00% |  |  |
Minimum [Member] | Relative portion of award [Member] | 2016 OPP [Member] |  |  |  |  |  |
Percentage of units to be earned |  |  |  | 20.00% |  |
Threshold Percentage for Performance Target |  |  |  | 40.00% |  |
Minimum [Member] | Relative portion of award [Member] | 2015 OPP [Member] |  |  |  |  |  |
Percentage of units to be earned |  |  |  |  | 33.00% |
Threshold Percentage for Performance Target |  |  |  |  | 50.00% |
Minimum [Member] | Relative portion of award [Member] | 2014 OPP [Member] |  |  |  |  |  |
Percentage of units to be earned |  |  |  |  |  | 33.00%
Threshold Percentage for Performance Target |  |  |  |  |  | 50.00%
Maximum [Member] | Absolute portion [Member] | 2018 OPP [Member] |  |  |  |  |  |
Absolute share price appreciation range |  | 29.50% |  |  |  |
Percentage of units to be earned |  | 100.00% |  |  |  |
Maximum [Member] | Absolute portion [Member] | 2017 OPP [Member] |  |  |  |  |  |
Absolute share price appreciation range |  |  | 35.00% |  |  |
Percentage of units to be earned |  |  | 100.00% |  |  |
Maximum [Member] | Absolute portion [Member] | 2016 OPP [Member] |  |  |  |  |  |
Absolute share price appreciation range |  |  |  | 35.00% |  |
Percentage of units to be earned |  |  |  | 100.00% |  |
Maximum [Member] | Absolute portion [Member] | 2015 OPP [Member] |  |  |  |  |  |
Absolute share price appreciation range |  |  |  |  | 35.00% |
Percentage of units to be earned |  |  |  |  | 100.00% |
Maximum [Member] | Absolute portion [Member] | 2014 OPP [Member] |  |  |  |  |  |
Absolute share price appreciation range |  |  |  |  |  | 35.00%
Percentage of units to be earned |  |  |  |  |  | 100.00%
Maximum [Member] | Relative portion of award [Member] | 2018 OPP [Member] |  |  |  |  |  |
Percentage of units to be earned |  | 100.00% |  |  |  |
Threshold Percentage for Performance Target |  | 80.00% |  |  |  |
Maximum [Member] | Relative portion of award [Member] | 2017 OPP [Member] |  |  |  |  |  |
Percentage of units to be earned |  |  | 100.00% |  |  |
Threshold Percentage for Performance Target |  |  | 70.00% |  |  |
Maximum [Member] | Relative portion of award [Member] | 2016 OPP [Member] |  |  |  |  |  |
Percentage of units to be earned |  |  |  | 100.00% |  |
Threshold Percentage for Performance Target |  |  |  | 70.00% |  |
Maximum [Member] | Relative portion of award [Member] | 2015 OPP [Member] |  |  |  |  |  |
Percentage of units to be earned |  |  |  |  | 100.00% |
Threshold Percentage for Performance Target |  |  |  |  | 70.00% |
Maximum [Member] | Relative portion of award [Member] | 2014 OPP [Member] |  |  |  |  |  |
Percentage of units to be earned |  |  |  |  |  | 100.00%
Threshold Percentage for Performance Target |  |  |  |  |  | 70.00%
Immediately following measurement period [Member] | Absolute portion [Member] | 2014 OPP [Member] |  |  |  |  |  |
Vested | 94,000 |  |  |  |  |
One year after measurement period [Member] | Absolute portion [Member] | 2014 OPP [Member] |  |  |  |  |  |
Vested | 90,000 |  |  |  |  |

X
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- Definition Represents the aggregate number shares that may be earned by the recipients of the stock-based compensation plan of the entity depending upon the appreciation of the price of stock of the entity above a threshold level + References No definition available. + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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