Equity - Components of Equity (Parenthetical) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended
	Oct. 31, 2024	Jul. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Dividends per share	$ 0.35		$ 0.35	$ 1.05	$ 2.05
Net unrealized (loss) on investments, tax (benefit)	$ 1		$ (3)	$ 8	$ (13)
Net change in effective portion of hedging contracts, tax (benefit) provision	39		(5)	34	33
Amortization of prior service cost, tax provision	$ 3	$ 3	$ 4	$ 10	$ 12
Common Stock Class Undefined
Common Stock, Voting Rights				Each share of common stock is entitled to one vote per share on all matters submitted to a vote of the shareholders.
Class A Common Stock
Common Stock, Voting Rights				Each share of class A common stock is entitled to 10 votes per share on all matters submitted to a vote of the shareholders.
Common stock, Conversion basis				Each holder of class A common stock is entitled to convert, at any time, any and all of such shares into the same number of shares of common stock. Each share of class A common stock is converted automatically into common stock in the event that the beneficial or record ownership of such shares of class A common stock is transferred to any person, except to certain family members or affiliated persons deemed “permitted transferees” pursuant to the Company’s Restated Certificate of Incorporation, as amended.