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Note 11 - Stockholders' Equity and Stock Incentive Plans - Dividends (Details) - $ / shares | Dec. 08, 2022 | Sep. 15, 2022 | Jun. 01, 2022 | Feb. 03, 2022 | Dec. 17, 2019
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Dividend Declared December 17, 2019 [Member] |  |  |  |  |
Dividends, record date |  |  |  |  | Dec. 27, 2019
Dividends, payment date |  |  |  |  | Jan. 15, 2020
Dividends, amount per share (in dollars per share) |  |  |  |  | $ 0.07
Dividend Declared February 03, 2022 [Member] |  |  |  |  |
Dividends, record date |  |  |  | Mar. 15, 2022 |
Dividends, payment date |  |  |  | Apr. 15, 2022 |
Dividends, amount per share (in dollars per share) |  |  |  | $ 0.15 |
Dividend Declared June 01, 2022 [Member] |  |  |  |  |
Dividends, record date |  |  | Jun. 30, 2022 |  |
Dividends, payment date |  |  | Jul. 15, 2022 |  |
Dividends, amount per share (in dollars per share) |  |  | $ 0.15 |  |
Dividend Declared September 15, 2022 [Member] |  |  |  |  |
Dividends, record date |  | Sep. 30, 2022 |  |  |
Dividends, payment date |  | Oct. 15, 2022 |  |  |
Dividends, amount per share (in dollars per share) |  | $ 0.15 |  |  |
Dividend Declared Dec. 8 2022 [Member] |  |  |  |  |
Dividends, record date | Dec. 19, 2022 |  |  |  |
Dividends, payment date | Jan. 15, 2023 |  |  |  |
Dividends, amount per share (in dollars per share) | $ 0.15 |  |  |  |

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- Definition Date the declared dividend will be paid, in YYYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 + Details
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- Definition The per share amount of a dividend declared, but not paid, as of the financial reporting date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 + Details
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