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Long-Term Debt, Net - Schedule of Notes Conversion Amounts (Detail) - 2025 Notes - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Apr. 30, 2022
Apr. 30, 2020
Debt Instrument [Line Items]    
Number of shares convertible 49,058  
Conversion price per share $ 8.40 $ 8.40
Value in excess of principal if converted $ 515,282