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Note 8 - Per Share Data - Antidilutive Securities Excluded from Computation (Details) - shares | 3 Months Ended | 6 Months Ended
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Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Antidilutive securities (in shares) |  | 55,295 | 36,384 | 57,303 | 33,559
Share-Based Payment Arrangement, Option [Member] |  |  |  |  |
Antidilutive securities (in shares) |  |  | 231,570 |  | 229,248
Restricted Stock Units (RSUs) [Member] |  |  |  |  |
Antidilutive securities (in shares) | [1] |  | 428,566 |  | 362,360
[1] | For the three months ended March 31, 2023, the total includes a weighted average of 30,702 units which were settled in cash.

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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