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Note 15 - Stock-based Compensation and Other Benefit Plans - Stock-based Compensation (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Total stock-based compensation | $ 842 | $ 514 | $ 2,264 | $ 2,073
Equity Awards [Member] |  |  |  |
Total stock-based compensation | 615 | 117 | 1,019 | 440
Liability Awards [Member] |  |  |  |
Total stock-based compensation | $ 227 | $ 397 | $ 1,245 | $ 1,633

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + 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 (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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