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Note 7 - Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2021
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Basic weighted-average shares |  |  | 30,264,000 |  |  |  | 24,701,000 |  |  |  | 29,356,000 |  |  |  | 24,656,000 |
Conversion of unsecured loan notes |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Unexercised options and unvested RSUs |  |  | 71,000 |  |  |  | 419,000 |  |  |  | 126,000 |  |  |  | — |
Diluted weighted-average shares |  |  | 30,335,000 |  |  |  | 25,120,000 |  |  |  | 29,482,000 |  |  |  | 24,656,000 |

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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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