Stock-Based Compensation - Stock Option Activity (Details) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended	12 Months Ended
	Oct. 31, 2025 USD ($) $ / shares shares	Apr. 30, 2025 USD ($) $ / shares shares
Number of Stock Options Outstanding
Balance at beginning of period (in shares) | shares	28,477
Options granted (in shares) | shares	1,601
Options exercised (in shares) | shares	(443)
Options cancelled (in shares) | shares	(127)
Balance at end of period (in shares) | shares	29,508	28,477
Vested and exercisable at end of period (in shares) | shares	25,412
Vested and expected to vest at end of period (in shares) | shares	29,508
Weighted Average Exercise Price
Balance at beginning of period (in dollars per share) | $ / shares	$ 15.13
Options granted (in dollars per share) | $ / shares	18.05
Options exercised (in dollars per share) | $ / shares	6.73
Options cancelled (in dollars per share) | $ / shares	30.32
Balance at end of period (in dollars per share) | $ / shares	15.35	$ 15.13
Vested and exercisable at end of period (in dollars per share) | $ / shares	13.38
Vested and expected to vest at end of period (in dollars per share) | $ / shares	$ 15.35
Weighted Average Remaining Contractual Life (years)
Balance at beginning of period	4 years 9 months 18 days	5 years 3 days
Balance at end of period	4 years 9 months 18 days	5 years 3 days
Vested and exercisable at end of period	4 years 2 months 26 days
Vested and expected to vest at end of period	4 years 9 months 18 days
Aggregate Intrinsic Value
Balance at beginning of period | $	$ 65,803	$ 195,923
Balance at end of period | $	65,803	$ 195,923
Vested and exercisable at end of period | $	106,730
Vested and expected to vest at end of period | $	$ 65,803