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Share-Based Employee Compensation - Summary of Activity for Restricted Stock Units and Nonvested Restricted Stock (Detail) - Restricted Stock Units and Restricted Stock [Member]
 9 Months Ended
Dec. 31, 2024
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Number of Shares, Restricted Stock Units and Nonvested Restricted Stock at March 31, 2024 | shares 204,946
Number of Shares, Granted | shares 66,741
Number of Shares, Vested | shares (26,194)
Number of Shares, Forfeited | shares 0
Number of Shares, Restricted Stock Units and Nonvested Restricted Stock at December 31, 2024 | shares 245,493
Weighted Average Grant Date Fair Value, Restricted Stock Units and Nonvested Restricted Stock at March 31, 2024 | $ / shares $ 121.12
Weighted Average Grant Date Fair Value, Granted | $ / shares 240.61
Weighted Average Grant Date Fair Value, Vested | $ / shares 183.42
Weighted Average Grant Date Fair Value, Forfeited | $ / shares 0
Weighted Average Grant Date Fair Value, Restricted Stock Units and Nonvested Restricted Stock at December 31, 2024 | $ / shares $ 156.3