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CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (Parenthetical) | 12 Months Ended
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Dec. 31, 2018 $ / shares $ / Units shares | Dec. 31, 2017 $ / shares $ / Units shares | Dec. 31, 2016 $ / shares $ / Units shares
Tanger Factory Outlet Centers, Inc. [Member] |  |  |
Shares/Units issued upon exercise of options (in shares) | 0 | 1,800 | 59,700
Grant of restricted common shares awards, net of forfeitures (in shares) | 355,184 | 411,968 | 173,124
Repurchase of shares (in shares) | 919,249 | 1,911,585 |
Issuance of deferred shares (in shares) |  |  | 24,040
Shares paid for tax withholding for share based compensation (in shares) | 89,437 | 69,886 | 66,760
Exchange of Operating Partnership units for common shares (in units) | 34,749 | 32,348 | 24,962
Common shares issued in exchange for Operating Partnership units (in shares) | 34,749 | 32,348 | 24,962
Dividends declared per common share (in dollars per share) | $ / shares | $ 1.3925 | $ 1.3525 | $ 1.2600
Tanger Properties Limited Partnership [Member] |  |  |
Shares/Units issued upon exercise of options (in shares) | 0 | 1,800 | 59,700
Grant of restricted common shares awards, net of forfeitures (in shares) | 355,184 | 411,968 | 173,124
Repurchase of shares (in shares) | 919,249 | 1,911,585 |
Issuance of deferred shares (in shares) |  |  | 24,040
Shares paid for tax withholding for share based compensation (in shares) | 89,437 | 69,886 | 66,760
Common distributions (in dollars per unit) | $ / Units | 1.3925 | 1.3525 | 1.260

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- Definition The number of units converted into shares of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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