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Employee Stock-Based Compensation (Tables)
12 Months Ended
Mar. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule of Share-Based Compensation Expense and Related Tax Benefit Recognized
The following table summarizes share-based compensation expense and total income tax benefit recognized for fiscal years 2025, 2024 and 2023 (in thousands):
 Years Ended March 31,
 202520242023
Cost of goods sold$10,021 $8,004 $5,635 
Marketing and selling 40,378 35,780 34,707 
Research and development20,180 17,836 15,292 
General and administrative19,334 21,269 15,148 
Total share-based compensation expense89,913 82,889 70,782 
Income tax benefit(20,148)(15,305)(9,750)
Total share-based compensation expense, net of income tax benefit$69,765 $67,584 $61,032 
Schedule of Assumptions Applied for the Fair Value of Market-Based RSUs Using the Monte-Carlo Simulation Method
The grant date fair value of the ESPP using the Black-Scholes-Merton option-pricing valuation model and the grant date fair value of the PSUs using the Monte-Carlo simulation method are determined with the following assumptions:
 Employee Stock Purchase Plans
Years Ended March 31,
 202520242023
Expected dividend rate1.35%1.61%1.78%
Risk-free interest rate4.71%5.36%3.86%
Expected volatility29%33%46%
Expected term (years)0.50.50.5
Weighted average grant date fair value per share$21.74$19.02$16.32
PSUsYears Ended March 31,
 202520242023
Expected dividend rate1.41%1.90%1.46%
Risk-free interest rate4.55%3.83%2.78%
Expected volatility38%41%39%
Expected term (years)3.03.03.0
Schedule of Stock Option Activity
A summary of the Company's stock option activities under all stock plans for fiscal years 2025, 2024 and 2023 is as follows:
 Number of SharesWeighted-Average Exercise PriceWeighted-Average Remaining Contractual TermAggregate Intrinsic Value
(In thousands)(Years)(In thousands)
Outstanding, March 31, 2022
1,393 
Exercised
(155)$6,482 
Forfeited
(118)
Outstanding, March 31, 2023
1,120 
Exercised(181)$6,160 
Forfeited(176)
Outstanding, March 31, 2024
763 $68 7.0$16,243 
Exercised(111)$80 $1,483 
Forfeited
(65)$80 
Outstanding, March 31, 2025
587 $64 5.3$11,768 
Vested and exercisable, March 31, 2025
587 $64 5.3$11,768 
Schedule of Time, Market and Performance-Based RSU Activity
A summary of the Company's RSU and PSU activities for fiscal years 2025, 2024 and 2023 is as follows:
 Number of SharesWeighted-Average Grant Date Fair ValueAggregate
Fair Value
(In thousands)(In thousands)
Outstanding, March 31, 2022
3,046 $68 
Granted—RSUs1,584 $53 
Granted—PSUs407 $69 
Vested(1,143)$85,152 
Forfeited(438)
Outstanding, March 31, 2023
3,456 $66 
Granted—RSUs1,396 $59 
Granted—PSUs457 $67 
Vested(1,200)$92,340 
Forfeited(631)
Outstanding, March 31, 2024
3,478 $65 
Granted—RSUs931 $93 
Granted—PSUs281 $91 
Vested(1,172)$65 $113,553 
Forfeited(462)$85 
Outstanding, March 31, 2025
3,056 $73