Share-Based Compensation (Stock Appreciation Rights Activity) (Details)	3 Months Ended
	Apr. 30, 2022 USD ($) $ / shares shares
Stock Appreciation Rights Activity, Number of Underlying Shares
Number of Underlying Shares, Beginning Balance at January 30, 2021 | shares	236,139
Number of Underlying Shares, Forfeited | shares	(33,300)
Number of Underlying Shares, Ending Balance at July 31, 2021 | shares	202,839
Number of Underlying shares, Stock appreciation rights exercisable | shares	202,839
Stock Appreciation Rights, Weighted-Average Exercise Price
Weighted-Average Grant Date Fair Value, Beginning Balance at January 30, 2021 | $ / shares	$ 32.55
Weighted-Average Exercise Price, Forfeited or expired | $ / shares	52.75
Weighted-Average Grant Date Fair Value, Ending Balance at July 31, 2021 | $ / shares	29.24
Weighted-Average Exercise Price, Stock appreciation rights exercisable | $ / shares	$ 29.24
Aggregate Intrinsic Value, Outstanding | $	$ 1,523,587
Aggregate Intrinsic Value, Stock appreciation rights exercisable | $	$ 1,523,587
Weighted-Average Remaining Contractual Life, Outstanding	2 years 4 months 24 days
Weighted-Average Remaining Contractual Life, Stock appreciation rights exercisable	2 years 4 months 24 days