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Revenues by Product (Tables)
 3 Months Ended
Apr. 30, 2022
Revenue from Contract with Customer [Abstract]  
Summary of Total Revenues
Total revenues consist of the following (in thousands):
Three months ended April 30,
20222021
Subscription services
Commercial Solutions(1)
$227,724 $207,845 
R&D Solutions(1)
174,908 133,274 
Total subscription services$402,632 $341,119 
Professional services
Commercial Solutions(1)
$43,321 $43,598 
R&D Solutions(1)
59,149 48,856 
Total professional services$102,470 $92,454 
Total revenues$505,102 $433,573 
(1) Certain prior period product revenues have been adjusted to match current period presentation.