Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Subsequent Event (Details Textual)

v3.21.2
Note 12 - Subsequent Event (Details Textual) - $ / shares
 3 Months Ended
Nov. 01, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Common Stock, Dividends, Per Share, Declared (in dollars per share)   $ 0.20 $ 0.20 $ 0.20 $ 0.20 $ 0.20 $ 0.20
Subsequent Event [Member]              
Common Stock, Dividends, Per Share, Declared (in dollars per share) $ 0.20