Note 9 - Cash Dividends (Details Textual) - USD ($) $ / shares in Units, $ in Millions		6 Months Ended
	Jan. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Payments of Dividends, Total		$ 2.8	$ 2.7
Annual Indicated per Share Dividend Rate		$ 0.2
Subsequent Event [Member]
Quarterly Indicated Per Share Dividend Rate	$ 0.05
Dividends Payable, Date to be Paid	Feb. 13, 2024
Dividends Payable, Date of Record	Feb. 05, 2024