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Income (Loss) Per Share (Tables) | 6 Months Ended
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Jun. 30, 2020
Income (Loss) Per Common Share |
Schedule of basic and diluted income (loss) per share and weighted average shares | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended June 30, | ​ | Six months ended June 30, | ​
​ |  | 2020 |  | 2019 |  | 2020 |  | 2019 |
​ | ​ | (in thousands, except per share amounts) | ​
Net income (loss) | ​ | $ | (8,302) | ​ | $ | (15,565) | ​ | $ | (8,869) | ​ | $ | (34,095) | ​
Net income (loss) per common share: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic | ​ | $ | (0.17) | ​ | $ | (0.33) | ​ | $ | (0.18) | ​ | $ | (0.72) | ​
Diluted | ​ | $ | (0.17) | ​ | $ | (0.33) | ​ | $ | (0.18) | ​ | $ | (0.72) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic weighted average shares outstanding | ​ |  | 48,109 | ​ |  | 47,112 | ​ |  | 48,147 | ​ |  | 47,145 | ​
Effect of potentially dilutive share-based awards | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​
Diluted weighted average shares outstanding | ​ |  | 48,109 | ​ |  | 47,112 | ​ |  | 48,147 | ​ |  | 47,145 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Common share equivalents excluded from the diluted weighted average shares outstanding since the Company incurred a net loss and their effect would be antidilutive | ​ | ​ | 712 | ​ | ​ | 498 | ​ | ​ | 671 | ​ | ​ | 344 | ​
Potentially dilutive shares excluded from the diluted calculation as their effect would be antidilutive | ​ | ​ | 1,194 | ​ | ​ | 1,903 | ​ | ​ | 1,132 | ​ | ​ | 1,933 | ​
Maximum potential shares to be issued for settlement of the 2023 and 2027 Notes excluded from the diluted calculation as their effect would be antidilutive | ​ | ​ | 15,354 | ​ | ​ | 8,618 | ​ | ​ | 15,354 | ​ | ​ | 8,618 | ​

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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://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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