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Earnings Per Share Calculation (Tables) | 6 Months Ended
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May 02, 2020
Earnings Per Share [Abstract] |
Schedule of Reconciliation of Numerator and Denominator of Basic and Diluted Earnings Per Share | The following tables (in thousands except per share amounts) reconcile basic net income per common share (“Basic EPS”) and diluted net income per potential common share (“Diluted EPS”). Basic EPS is computed using the weighted average number of common shares outstanding. Diluted EPS is computed using the weighted average number of the following, in each case, to the extent the effect is not anti-dilutive: (i) common shares outstanding; (ii) shares issuable upon vesting of stock unit awards; and (iii) shares issuable under Ciena’s employee stock purchase plan and upon exercise of outstanding stock options, using the treasury stock method.
| Quarter Ended |  | Six Months Ended
| May 2, |  | May 4, |  | May 2, |  | May 4,
Numerator | 2020 |  | 2019 |  | 2020 |  | 2019
Net income used to calculate Basic and Diluted EPS | $ | 91,655 |  |  | $ | 52,738 |  |  | $ | 153,983 |  |  | $ | 86,354 |
| Quarter Ended |  | Six Months Ended
| May 2, |  | May 4, |  | May 2, |  | May 4,
Denominator | 2020 |  | 2019 |  | 2020 |  | 2019
Basic weighted average shares outstanding | 153,858 |  |  | 156,170 |  |  | 154,099 |  |  | 156,244 |
Add: Shares underlying outstanding stock options and stock unit awards and issuable under employee stock purchase plan | 1,283 |  |  | 2,119 |  |  | 1,344 |  |  | 1,967 |
Dilutive weighted average shares outstanding | 155,141 |  |  | 158,289 |  |  | 155,443 |  |  | 158,211 |
| Quarter Ended |  | Six Months Ended
| May 2, |  | May 4, |  | May 2, |  | May 4,
EPS | 2020 |  | 2019 |  | 2020 |  | 2019
Basic EPS | $ | 0.60 |  |  | $ | 0.34 |  |  | $ | 1.00 |  |  | $ | 0.55 |
Diluted EPS | $ | 0.59 |  |  | $ | 0.33 |  |  | $ | 0.99 |  |  | $ | 0.55 |
Schedule of Weighted Average Shares Excluded From Calculation of Denominator for Basic and Diluted EPS | The following table summarizes the weighted average shares excluded from the calculation of the denominator for Diluted EPS due to their anti-dilutive effect for the periods indicated (in thousands):
| Quarter Ended |  | Six Months Ended
| May 2, |  | May 4, |  | May 2, |  | May 4,
| 2020 |  | 2019 |  | 2020 |  | 2019
Shares underlying stock options and stock unit awards | 203 |  |  | 283 |  |  | 467 |  |  | 257 |
Total shares excluded due to anti-dilutive effect | 203 |  |  | 283 |  |  | 467 |  |  | 257 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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