Consolidated Condensed Statements of Stockholders' Equity (Parenthetical) - $ / shares				3 Months Ended
	Feb. 09, 2021	Aug. 07, 2020	Feb. 10, 2020	Jul. 31, 2021	Jan. 31, 2021	Jul. 31, 2020	Jan. 31, 2020
Statement of Stockholders' Equity [Abstract]
Dividends on common stock (in dollars per share)	$ 0.03	$ 0.03	$ 0.03	$ 0.03	$ 0.03	$ 0.03	$ 0.03