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
Aug. 02, 2021
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2020
Mar. 31, 2020
Common Stock, Dividends, Per Share, Declared (in dollars per share)   $ 0.20 $ 0.20 $ 0.20 $ 0.20
Subsequent Event [Member]          
Common Stock, Dividends, Per Share, Declared (in dollars per share) $ 0.20