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Earnings Per Share | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
Earnings Per Share | The following table sets forth the computation of basic and diluted earnings (loss) per share (EPS):
| Year Ended December 31,
In thousands, except per share data | 2020 |  | 2019 |  | 2018
Net income (loss) available to common shareholders | $ | (57,955) |  |  | $ | 49,006 |  |  | $ | (99,250) |
Weighted average common shares outstanding - Basic | 40,253 |  |  | 39,556 |  |  | 39,244 |
Dilutive effect of stock-based awards | — |  |  | 424 |  |  | — |
Weighted average common shares outstanding - Diluted | 40,253 |  |  | 39,980 |  |  | 39,244 |
Net income (loss) per common share - Basic | $ | (1.44) |  |  | $ | 1.24 |  |  | $ | (2.53) |
Net income (loss) per common share - Diluted | $ | (1.44) |  |  | $ | 1.23 |  |  | $ | (2.53) |
Stock-based Awards For stock-based awards, the dilutive effect is calculated using the treasury stock method. Under this method, the dilutive effect is computed as if the awards were exercised at the beginning of the period (or at time of issuance, if later) and assumes the related proceeds were used to repurchase our common stock at the average market price during the period. Related proceeds include the amount the employee must pay upon exercise and the future compensation cost associated with the stock award. Approximately 0.7 million, 0.4 million, and 1.1 million stock-based awards were excluded from the calculation of diluted EPS for the years ended December 31, 2020, 2019, and 2018, respectively, because they were anti-dilutive. These stock-based awards could be dilutive in future periods.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257 + Details
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