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Earnings Per Unit of the Operating Partnership | 12 Months Ended
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Dec. 31, 2018
Tanger Properties Limited Partnership [Member] |
Earnings Per Unit of the Operating Partnership | Earnings Per Unit of the Operating Partnership The following table sets forth a reconciliation of the numerators and denominators in computing earnings per unit for the years ended December 31, 2018, 2017 and 2016 (in thousands, except per unit amounts):
|  | 2018 |  | 2017 |  | 2016
Numerator |  |  |  |  |  |
Net income attributable to partners of the Operating Partnership |  | $ | 45,984 |  |  | $ | 71,611 |  |  | $ | 204,031 |
Allocation of earnings to participating securities |  | (1,211 | ) |  | (1,209 | ) |  | (1,928 | )
Net income available to common unitholders of the Operating Partnership |  | $ | 44,773 |  |  | $ | 70,402 |  |  | $ | 202,103 |
Denominator |  |  |  |  |  |
Basic weighted average common units |  | 98,302 |  |  | 99,533 |  |  | 100,155 |
Effect of notional units |  | — |  |  | — |  |  | 175 |
Effect of outstanding options and certain restricted common units |  | 1 |  |  | 16 |  |  | 68 |
Diluted weighted average common units |  | 98,303 |  |  | 99,549 |  |  | 100,398 |
Basic earnings per common unit: |  |  |  |  |  |
Net income |  | $ | 0.45 |  |  | $ | 0.71 |  |  | $ | 2.02 |
Diluted earnings per common unit: |  |  |  |  |  |
Net income |  | $ | 0.45 |  |  | $ | 0.71 |  |  | $ | 2.01 |
We determine diluted earnings per unit based on the weighted average number of common units outstanding combined with the incremental weighted average units that would have been outstanding assuming all potentially dilutive securities were converted into common units at the earliest date possible. Notional units granted under our equity compensation plan are considered contingently issuable common units and are included in earnings per unit if the effect is dilutive using the treasury stock method and the common shares would be issuable if the end of the reporting period were the end of the contingency period. For the years ended December 31, 2018, 2017, and 2016, approximately 1.0 million, 603,000 and 501,000 units were excluded from the computation, respectively, because these units would not have been issuable if the end of the reporting period were the end of the contingency period or because they were anti-dilutive. The notional units are considered contingently issuable common units and are included in earnings per unit if the effect is dilutive using the treasury stock method. With respect to outstanding options, the effect of dilutive common units is determined using the treasury stock method, whereby outstanding options are assumed exercised at the beginning of the reporting period and the exercise proceeds from such options and the average measured but unrecognized compensation cost during the period are assumed to be used to repurchase our common units at the average market price during the period. The market price of a common unit is considered to be equivalent to the market price of a Company common share. For the years ended December 31, 2018, 2017 and 2016, approximately 535,000, 169,000 and 141,000 options were excluded from the computation, respectively. Certain of the Company's unvested restricted common share awards contain non-forfeitable rights to distributions or distribution equivalents. The impact of the corresponding unvested restricted unit awards on earnings per unit has been calculated using the two-class method whereby earnings are allocated to the unvested restricted unit awards based on distributions declared and the unvested restricted units' participation rights in undistributed earnings. Unvested restricted common units that do not contain non-forfeitable rights to dividends or dividend equivalents are included in the diluted earnings per unit computation if the effect is dilutive, using the treasury stock method.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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