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Carrying value of Other Investments (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]        
Beginning balance $ 39,041 $ 31,584 $ 38,741 $ 24,584
Additions 23,004 12,600 26,104 19,600
Reclassification     (2,000)  
Impairment   (750) (800) (750)
Change in fair value 950   950  
Ending balance $ 62,995 $ 43,434 $ 62,995 $ 43,434