XML 65 R53.htm IDEA: XBRL DOCUMENT v3.22.2.2
LONG-TERM DEBT - 2021 Notes (Details)
6 Months Ended
Apr. 09, 2021
USD ($)
$ / shares
Apr. 06, 2021
USD ($)
Jul. 31, 2022
USD ($)
Jul. 31, 2021
USD ($)
Debt Instrument [Line Items]        
Payments of debt-related costs     $ 224,000 $ 10,531,000
Series B Preferred Stock | Series B Private Placement        
Debt Instrument [Line Items]        
Sale of stock, consideration received on transaction   $ 200,000,000    
2021 Notes        
Debt Instrument [Line Items]        
Debt principal amount $ 315,000,000      
Coupon interest rate 0.25%      
Convertible debt, conversion ratio   0.0161092    
Convertible debt, conversion price (in dollars per share) | $ / shares $ 62.08      
Payments of debt-related costs $ 8,900,000      
Effective interest rate (as a percent)     0.83%