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Segment Information - Schedule of Revenue by Geographic Area (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total revenues $ 723,472 $ 670,885 $ 710,957
United States      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total revenues 379,106 342,660 379,221
Other      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total revenues $ 344,366 $ 328,225 $ 331,736