Note 11 - Stock-based and Deferred Compensation -Summary of Additional Information Regarding Stock Plan (Details) - USD ($) $ in Thousands |
6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2022 |
Dec. 31, 2021 |
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| Unrecognized stock-based compensation cost | $ 38,340 | $ 25,007 | ||
| Weighted average years expense recognition period (Year) | 2 years 1 month 17 days | 1 year 11 months 19 days | ||
| Total equity awards outstanding (1) (in shares) | [1] | 816,513 | 883,280 | |
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| X | ||||||||||
- Definition Share based compensation arrangement by share based payment award number of shares outstanding. No definition available.
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| X | ||||||||||
- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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