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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
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

X

- 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

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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

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- Definition

Date the holder must own the stock to be entitled to the dividend, in YYYY-MM-DD format.

+ References

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