Stockholders' Equity - Textuals (Details) - shares	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Stockholders' Equity [Abstract]
Common stock, shares issued	0	0	0	0
Treasury stock, shares utilized of equity awards	2,366		191,837	349,342