Investments - Schedule of Cost, Gross Unrealized Gains and Losses, and Fair Value of Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Mar. 31, 2025
Cash equivalents:
Cost or Amortized Cost	$ 183,453	$ 157,530
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(2)	(8)
Fair Value	183,451	157,522
Marketable securities:
Cost or Amortized Cost	529,383	704,274
Gross Unrealized Gains	587	1,912
Gross Unrealized Losses	(547)	(136)
Fair Value	529,423	706,050
Total cash and cash equivalents and marketable securities, Cost or amortized cost	712,836	861,804
Total cash and cash equivalents and marketable securities, Gross unrealized gains	587	1,912
Total cash and cash equivalents and marketable securities, Gross unrealized Losses	(549)	(144)
Total cash equivalents and marketable securities	712,874	863,572
Commercial paper
Marketable securities:
Cost or Amortized Cost	11,314	42,860
Gross Unrealized Gains	0	7
Gross Unrealized Losses	(2)	(4)
Fair Value	11,312	42,863
Corporate notes and bonds
Marketable securities:
Cost or Amortized Cost	390,900	501,202
Gross Unrealized Gains	341	1,373
Gross Unrealized Losses	(468)	(131)
Fair Value	390,773	502,444
U.S. government and agency securities
Marketable securities:
Cost or Amortized Cost	127,169	160,212
Gross Unrealized Gains	246	532
Gross Unrealized Losses	(77)	(1)
Fair Value	127,338	160,743
Commercial paper
Cash equivalents:
Cost or Amortized Cost	8,500	73,055
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(2)	(8)
Fair Value	8,498	73,047
Money market funds
Cash equivalents:
Cost or Amortized Cost	174,953	84,475
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	$ 174,953	$ 84,475

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Fair value portion of asset recognized for present right to economic benefit.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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