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(6) Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2021
Earnings Per Share, Basic and Diluted [Abstract] |
Computation of earnings per share |
Computation of earnings per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
|  | (In thousands) |  |  | (In thousands) |
Weighted average number of common shares outstanding during the period used to compute basic earnings per share |  |  | 23,011 |  |  |  | 22,666 |  |  |  | 22,866 |  |  |  | 22,630 |
Incremental common shares attributable to exercise of outstanding options and warrants |  |  | 3,207 |  |  |  | 1,242 |  |  |  | 2,573 |  |  |  | 1,195 |
Weighted average number of common shares used to compute diluted earnings per share |  |  | 26,218 |  |  |  | 23,908 |  |  |  | 25,439 |  |  |  | 23,825 |

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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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