Consolidated Statements of Changes in Shareholders' Equity (Parentheticals) - $ / shares	3 Months Ended
	Apr. 30, 2024	Jan. 31, 2024	Oct. 31, 2023	Jul. 31, 2023	Apr. 30, 2023	Jan. 31, 2023	Oct. 31, 2022	Jul. 31, 2022	Apr. 30, 2022	Jan. 31, 2022	Oct. 31, 2021	Jul. 31, 2021
Dividends declared per share (in dollars per share)	$ 0.3	$ 0.28	$ 0.28	$ 0.28	$ 0.28	$ 0.25	$ 0.25	$ 0.25	$ 0.25	$ 0.22	$ 0.22	$ 0.22