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Note 11 - Share Based Compensation and Employee Benefit Plans - Non-vested Options (Details) - $ / shares | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Non-vested balance (in shares) | 2,576,614 |  |
Non-vested, weighted average grant date fair value (in dollars per share) | $ 9.35 |  |
Granted (in shares) | 511,900 |  |
Weighted-average fair value of stock options granted (in dollars per share) | $ 16.81 | $ 14.77 | $ 6.36
Vested (in shares) | (663,369) |  |
Vested, weighted average grant date fair value (in dollars per share) | $ 8.96 |  |
Forfeited (in shares) | (24,750) |  |
Forfeited, weighted average grant date fair value (in dollars per share) | $ 12.05 |  |
Non-vested balance (in shares) | 2,400,395 | 2,576,614 |
Non-vested, weighted average grant date fair value (in dollars per share) | $ 11.02 | $ 9.35 |

X
- Definition Gross number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Number of non-vested options outstanding. + References No definition available. + Details
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