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Earnings (Loss) Per Common Share (EPS) | 3 Months Ended
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Mar. 31, 2020
Earnings Per Share, Basic and Diluted [Abstract] |
Earnings (Loss) Per Common Share (EPS) | 11. Earnings (Loss) Per Common Share (EPS). The computation of weighted average shares outstanding and the basic and diluted earnings (loss) per common share consisted of the following (in thousands, except per share amounts): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​
​ | ​ | March 31, | ​
​ | ​ | 2020 | ​ | 2019 | ​
Net income (loss) | ​ | $ | (3,154) | ​ | $ | 6,195 | ​
Average common shares outstanding | ​ |  | 55,246 | ​ |  | 54,917 | ​
Basic EPS | ​ | $ | (0.06) | ​ | $ | 0.11 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Average common shares outstanding | ​ | ​ | 55,246 | ​ | ​ | 54,917 | ​
Effect of dilutive stock options (1) | ​ | ​ | — | ​ | ​ | 1,573 | ​
Total potential shares outstanding | ​ | ​ | 55,246 | ​ | ​ | 56,490 | ​
Diluted EPS | ​ | $ | (0.06) | ​ | $ | 0.11 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Stock options excluded as the impact was anti-dilutive(1) | ​ | ​ | 4,340 | ​ | ​ | 976 | ​
(1) | For the three-month period ended March 31, 2020, 2,242 outstanding stock options were considered antidilutive due to the net loss in the period. Independent of the net loss incurred, the potentially dilutive effect of these options would have been 769 shares.

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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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