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Stock-Based Compensation - Schedule of Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 6 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Shares    
Outstanding, beginning of period (in shares) 518,700 728,000.0
Granted (in shares) 109,700 109,700
Exercised (in shares) (70,500) (73,300)
Forfeited (in shares) (36,300) (15,600)
Outstanding, end of period (in shares) 521,600 748,800
Exercisable, end of period (in shares) 341,500 520,500
Weighted Average Exercise Price    
Outstanding, beginning of period (in USD per share) $ 52.22 $ 48.30
Granted (in USD per share) 82.58 69.94
Exercised (in USD per share) 55.41 48.99
Forfeited (in USD per share) 76.13 60.87
Outstanding, end of period (in USD per share) 56.51 51.14
Vested, end of period, weighted-average exercise price (in USD per share) $ 46.88 $ 45.48
Options, Additional Disclosures:    
Outstanding, end of period, weighted-average remaining contractual term 6 years 6 months 6 years 4 months 24 days
Exercisable, end of period, weighted-average remaining contractual term 5 years 3 months 18 days 5 years 3 months 18 days
Outstanding, end of period, aggregate intrinsic value $ 5,482 $ 15,697
Vested, end of period, aggregate intrinsic value $ 5,462 $ 13,856