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Note 14 - Employee Stock Purchase Plan (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2022 | Mar. 31, 2022 | Jun. 30, 2022 | Jun. 30, 2022 | Jun. 23, 2021
Stock Issued During Period, Value, Employee Stock Purchase Plan | $ 65 | $ 56 |  |  |
Share Price (in dollars per share) | $ 6.82 | $ 10.73 | $ 6.82 | $ 6.82 |
Employee Stock Purchase Plan [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) |  |  |  |  | 250,000
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares) |  |  | 14,715 | 18,706 |
Stock Issued During Period, Value, Employee Stock Purchase Plan |  |  | $ 121 | $ 146 |
Shares Issued, Price Per Share (in dollars per share) | $ 5.80 | $ 9.12 | $ 5.80 | $ 5.80 |
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date |  |  | 15.00% |  |
Share-based Compensation Arrangement by Share-based Payment Award, Discount Amount |  |  | $ 18 |  |
Share-Based Payment Arrangement, Expense |  |  | $ 26 |  |

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- Definition Discount amount from fair value on purchase date that participants pay for shares. + References No definition available. + Details
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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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