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Note 6 - Share-based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2022
Notes Tables |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Three Months Ended March 31, |
|  | 2022 |  |  | 2021 |
Cost of sales |  | $ | 240 |  |  | $ | 230 |
Selling, general, and administrative expense |  |  | 395 |  |  |  | 467 |
Total |  | $ | 635 |  |  | $ | 697 |
Schedule of Unvested Restricted Stock Units and Performance Share Awards Activity [Table Text Block] |
|  | Number of RSUs and PSAs (1) |  |  | Weighted-Average Grant Date Fair Value |
Unvested RSUs and PSAs as of December 31, 2021 |  |  | 161,131 |  |  | $ | 30.26 |
RSUs and PSAs vested (2) |  |  | (68,581 | ) |  |  | 29.29 |
Unvested RSUs and PSAs as of March 31, 2022 |  |  | 92,550 |  |  |  | 30.98 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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