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Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2021
Summary of Significant Accounting Policies |
Schedule of Computation of Basic and Diluted Earnings Per Share | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended |  | Nine Months Ended |
​ | ​ | September 30, |  | September 30, |
​ |  | 2021 |  | 2020 |  | 2021 |  | 2020 |
​ | ​ | (In thousands, except per share data) |
Numerator: |  | ​ |  |  | ​ |  | ​ | ​ |  |  | ​ |  | ​
Net income (loss) | ​ | $ | 3,454 | ​ | $ | (950) | ​ | $ | 7,465 | ​ | $ | (4,181) | ​
Less: Income (loss) allocated to unvested participating securities | ​ |  | 37 | ​ |  | (20) | ​ |  | 80 | ​ |  | (86) | ​
Net income (loss) available to common stockholders | ​ | $ | 3,417 | ​ | $ | (930) | ​ | $ | 7,385 | ​ | $ | (4,095) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Denominator: | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​
Denominator for basic earnings per share — weighted average shares | ​ |  | 5,917 | ​ |  | 5,869 | ​ |  | 5,916 | ​ |  | 5,867 | ​
Effect of dilutive securities: | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​
Common stock equivalents | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​
Denominator for diluted earnings per share — adjusted weighted-average shares and assumed conversions | ​ |  | 5,917 | ​ |  | 5,869 | ​ |  | 5,916 | ​ |  | 5,867 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Earnings (loss) per share: | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​
Basic | ​ | $ | 0.58 | ​ | $ | (0.16) | ​ | $ | 1.25 | ​ | $ | (0.70) | ​
Diluted | ​ | $ | 0.58 | ​ | $ | (0.16) | ​ | $ | 1.25 | ​ | $ | (0.70) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​

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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=124432515&loc=d3e3550-109257 + Details
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