v3.26.1
Equity - Components of Equity (Parenthetical) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Class of Stock [Line Items]    
Dividends per share $ 0.35 $ 0.35
Net unrealized gain/(loss) on investments, tax provision/(benefit) $ 1 $ (10)
Net change in effective portion of hedging contracts, tax provision (benefit) 6 (211)
Amortization of prior service cost, tax provision $ 6 $ 3
Common Stock Class Undefined    
Class of Stock [Line Items]    
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    
Class of Stock [Line Items]    
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.