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Net Income (Loss) Per Share | 6 Months Ended
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Jun. 30, 2020
Earnings Per Share [Abstract] |
Net Income (Loss) Per Share | 1 4. Net Income (Loss) Per Share The following is a reconciliation of the average shares outstanding used to compute basic and diluted income (loss) per common share:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Basic weighted average common shares outstanding |  |  | 34,519,889 |  |  |  | 35,595,718 |  |  |  | 34,827,582 |  |  |  | 35,619,145 |
Effect of dilutive securities |  |  | — |  |  |  | 130,190 |  |  |  | — |  |  |  | 179,944 |
Diluted weighted average common shares outstanding |  |  | 34,519,889 |  |  |  | 35,725,908 |  |  |  | 34,827,582 |  |  |  | 35,799,089 |
Equity incentive instruments for which total employee proceeds from exercise exceed the average fair value of the same equity incentive instrument over the period have an anti-dilutive effect on earnings per share during periods with net earnings, and accordingly, the Company excludes them from the calculation. Anti-dilutive equity instruments of 1,515,430 and 1,556,298 common shares were excluded from the computation of diluted net income (loss) per common share for the three and six months ended June 30, 2019, respectively. Due to the net loss incurred during the three and six months ended June 30, 2020, the assumed exercise of all equity instruments was anti-dilutive and, therefore, not included in the net diluted income (loss) per share calculations for those periods. No cash dividends were paid during the three and six months ended June 30, 2020 and 2019.

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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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