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Note 3 - Dividends	3 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Dividends Disclosure [Text Block]	3.      Dividends On February 12, 2020, the Company declared a cash dividend on its common stock, payable on May 15, 2020 to stockholders of record as of May 1, 2020 , equal to $0.25 per share

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Disclosure of all or some of the information related to dividends declared, but not paid, as of the financial reporting date.

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