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Stock-Based Compensation - Schedule of Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 6 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Shares    
Outstanding, beginning of period (in shares) 728,000.0 1,081,000
Granted (in shares) 109,700 131,100
Exercised (in shares) (73,300) (230,400)
Forfeited (in shares) (15,600) (35,800)
Expired (in shares)   (2,800)
Outstanding, end of period (in shares) 748,800 943,100
Exercisable, end of period (in shares) 520,500 644,700
Weighted Average Exercise Price    
Outstanding, beginning of period, weighted-average exercise price (in USD per share) $ 48.30 $ 43.96
Granted, weighted-average exercise price (in USD per share) 69.94 61.81
Exercised, weighted-average exercise price (in USD per share) 48.99 39.85
Forfeited, weighted-average exercise price (in USD per share) 60.87 54.81
Expired, weighted-average exercise price (in USD per share)   54.47
Outstanding, end of period, weighted-average exercise price (in USD per share) 51.14 47.00
Exercisable, end of period, weighted-average exercise price (in USD per share) $ 45.48 $ 43.19
Options, Additional Disclosures:    
Outstanding, end of period, weighted-average remaining contractual term 6 years 4 months 24 days 6 years 3 months 18 days
Exercisable, end of period, weighted-average remaining contractual term 5 years 3 months 18 days 5 years 2 months 12 days
Outstanding, end of period, aggregate intrinsic value $ 15,697 $ 10,166
Exercisable, end of period, aggregate intrinsic value $ 13,856 $ 9,025