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Note 11 - Contingencies (Details Textual) |  |  |  | 2 Months Ended
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Jul. 05, 2022 | Jun. 30, 2022 | Nov. 04, 2021 | Oct. 26, 2021
Violations of Federal Securities Laws [Member] |  |  |  |
Loss Contingency, New Claims Filed, Number |  | 1 |  | 4
Shareholder Derivative Actions [Member] |  |  |  |
Loss Contingency, New Claims Filed, Number | 3 |  | 4 |
Shareholder Derivative Actions, Texas Court [Member] |  |  |  |
Loss Contingency, New Claims Filed, Number |  |  | 2 |
Shareholder Derivative Actions, Texas State Court Member |  |  |  |
Loss Contingency, New Claims Filed, Number |  |  | 1 |
Shareholder Derivative Actions, Delaware Court [Member] |  |  |  |
Loss Contingency, New Claims Filed, Number |  |  | 1 |

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- Definition The total number of new claims filed pertaining to a loss contingency during the period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483076/450-20-50-4 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483076/450-20-50-9 + Details
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