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Treasury Stock - Additional Information (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023	Nov. 23, 2021
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program, total cost of shares repurchased	$ 52,000	$ 1,086,000	$ 433,000
Surrender of Shares by Employee
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program, number of shares repurchased		41,239	3,538
November 23, 2021 Share repurchase Program
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program, number of shares authorized				$ 50,000,000
Stock repurchase program, total cost of shares repurchased		$ 1,100,000
Stock repurchase program, number of shares repurchased		39,000
Stock repurchase program, average per share price of shares repurchased		$ 27.85
Stock repurchase program, remaining authorized repurchase amount				$ 16,800,000
March 25, 2021 and November 23, 2021 Share Repurchase Program
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program, total cost of shares repurchased			$ 400,000
Stock repurchase program, number of shares repurchased			16,000
Stock repurchase program, average per share price of shares repurchased			$ 27.04