Fair Value Measurements - Assets and Liabilities at Fair Value (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Mar. 31, 2024 |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | $ 101,595 | $ 84,229 |
Total marketable securities | 639,046 | 666,115 |
Total cash equivalents and marketable securities | 740,641 | 750,344 |
Asset-backed securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | | 121 |
Commercial paper | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | 41,576 | 70,755 |
Corporate notes and bonds | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | 350,926 | 225,822 |
Sovereign bonds | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | | 7,676 |
U.S. government and agency securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | 246,544 | 361,741 |
Commercial paper | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | 2,180 | |
Money market funds | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | 99,415 | 83,049 |
Fair Value, Recurring | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | 101,595 | 84,229 |
Total marketable securities | 639,046 | 666,115 |
Total cash equivalents and marketable securities | 740,641 | 750,344 |
Liabilities: | | |
Contingent earn-out consideration liability | 11,015 | 16,813 |
Total contingent earn-out consideration liability | 11,015 | 16,813 |
Fair Value, Recurring | Asset-backed securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | | 121 |
Fair Value, Recurring | Commercial paper | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | 41,576 | 70,755 |
Fair Value, Recurring | Corporate notes and bonds | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | | 1,180 |
Total marketable securities | 350,926 | 225,822 |
Fair Value, Recurring | Sovereign bonds | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | | 7,676 |
Fair Value, Recurring | U.S. government and agency securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | 246,544 | 361,741 |
Fair Value, Recurring | Commercial paper | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | 2,180 | |
Fair Value, Recurring | Money market funds | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | 99,415 | 83,049 |
Level 1 | Fair Value, Recurring | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | 99,415 | 83,049 |
Total marketable securities | 240,561 | 355,804 |
Total cash equivalents and marketable securities | 339,976 | 438,853 |
Liabilities: | | |
Contingent earn-out consideration liability | 0 | 0 |
Total contingent earn-out consideration liability | 0 | 0 |
Level 1 | Fair Value, Recurring | Asset-backed securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | | 0 |
Level 1 | Fair Value, Recurring | Commercial paper | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | 0 | 0 |
Level 1 | Fair Value, Recurring | Corporate notes and bonds | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | | 0 |
Total marketable securities | 0 | 0 |
Level 1 | Fair Value, Recurring | Sovereign bonds | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | | 0 |
Level 1 | Fair Value, Recurring | U.S. government and agency securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | 240,561 | 355,804 |
Level 1 | Fair Value, Recurring | Commercial paper | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | 0 | |
Level 1 | Fair Value, Recurring | Money market funds | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | 99,415 | 83,049 |
Level 2 | Fair Value, Recurring | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | 2,180 | 1,180 |
Total marketable securities | 398,485 | 310,311 |
Total cash equivalents and marketable securities | 400,665 | 311,491 |
Liabilities: | | |
Contingent earn-out consideration liability | 0 | 0 |
Total contingent earn-out consideration liability | 0 | 0 |
Level 2 | Fair Value, Recurring | Asset-backed securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | | 121 |
Level 2 | Fair Value, Recurring | Commercial paper | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | 41,576 | 70,755 |
Level 2 | Fair Value, Recurring | Corporate notes and bonds | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | | 1,180 |
Total marketable securities | 350,926 | 225,822 |
Level 2 | Fair Value, Recurring | Sovereign bonds | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | | 7,676 |
Level 2 | Fair Value, Recurring | U.S. government and agency securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | 5,983 | 5,937 |
Level 2 | Fair Value, Recurring | Commercial paper | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | 2,180 | |
Level 2 | Fair Value, Recurring | Money market funds | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | 0 | 0 |
Level 3 | Fair Value, Recurring | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | 0 | 0 |
Total marketable securities | 0 | 0 |
Total cash equivalents and marketable securities | 0 | 0 |
Liabilities: | | |
Contingent earn-out consideration liability | 11,015 | 16,813 |
Total contingent earn-out consideration liability | 11,015 | 16,813 |
Level 3 | Fair Value, Recurring | Asset-backed securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | | 0 |
Level 3 | Fair Value, Recurring | Commercial paper | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | 0 | 0 |
Level 3 | Fair Value, Recurring | Corporate notes and bonds | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | | 0 |
Total marketable securities | 0 | 0 |
Level 3 | Fair Value, Recurring | Sovereign bonds | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | | 0 |
Level 3 | Fair Value, Recurring | U.S. government and agency securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total marketable securities | 0 | 0 |
Level 3 | Fair Value, Recurring | Commercial paper | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | 0 | |
Level 3 | Fair Value, Recurring | Money market funds | | |
Assets, Fair Value Disclosure [Abstract] | | |
Total cash equivalents | $ 0 | $ 0 |