Fair Value Measurements - Assets and Liabilities at Fair Value (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Mar. 31, 2022 |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | $ 676,317 | |
Cash and Cash Equivalents | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 4,412 | |
Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 676,317 | $ 685,304 |
Commercial paper | Cash and Cash Equivalents | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | | 2,686 |
Asset-backed securities | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 6,452 | 7,740 |
Certificates of deposit | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 15,337 | |
Commercial paper | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 44,000 | 9,383 |
Corporate notes and bonds | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 129,128 | 128,104 |
Sovereign bonds | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 7,253 | 8,436 |
U.S. government and agency securities | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 474,147 | 531,641 |
Fair Value, Recurring | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 680,729 | 708,062 |
Liabilities: | | |
Contingent earn-out consideration liability | 21,040 | |
Total contingent earn-out consideration liability | 21,040 | |
Fair Value, Recurring | Cash and Cash Equivalents | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 4,412 | 22,758 |
Fair Value, Recurring | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 676,317 | 685,304 |
Fair Value, Recurring | Commercial paper | Cash and Cash Equivalents | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | | 2,686 |
Fair Value, Recurring | Money market funds | Cash and Cash Equivalents | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 4,412 | 20,072 |
Fair Value, Recurring | Asset-backed securities | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 6,452 | 7,740 |
Fair Value, Recurring | Certificates of deposit | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 15,337 | |
Fair Value, Recurring | Commercial paper | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 44,000 | 9,383 |
Fair Value, Recurring | Corporate notes and bonds | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 129,128 | 128,104 |
Fair Value, Recurring | Sovereign bonds | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 7,253 | 8,436 |
Fair Value, Recurring | U.S. government and agency securities | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 474,147 | 531,641 |
Level 1 | Fair Value, Recurring | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 478,559 | 550,246 |
Liabilities: | | |
Contingent earn-out consideration liability | 0 | |
Total contingent earn-out consideration liability | 0 | |
Level 1 | Fair Value, Recurring | Cash and Cash Equivalents | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 4,412 | 20,072 |
Level 1 | Fair Value, Recurring | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 474,147 | 530,174 |
Level 1 | Fair Value, Recurring | Commercial paper | Cash and Cash Equivalents | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | | 0 |
Level 1 | Fair Value, Recurring | Money market funds | Cash and Cash Equivalents | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 4,412 | 20,072 |
Level 1 | Fair Value, Recurring | Asset-backed securities | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 0 | 0 |
Level 1 | Fair Value, Recurring | Certificates of deposit | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 0 | |
Level 1 | Fair Value, Recurring | Commercial paper | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 0 | 0 |
Level 1 | Fair Value, Recurring | Corporate notes and bonds | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 0 | 0 |
Level 1 | Fair Value, Recurring | Sovereign bonds | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 0 | 0 |
Level 1 | Fair Value, Recurring | U.S. government and agency securities | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 474,147 | 530,174 |
Level 2 | Fair Value, Recurring | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 202,170 | 157,816 |
Liabilities: | | |
Contingent earn-out consideration liability | 0 | |
Total contingent earn-out consideration liability | 0 | |
Level 2 | Fair Value, Recurring | Cash and Cash Equivalents | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 0 | 2,686 |
Level 2 | Fair Value, Recurring | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 202,170 | 155,130 |
Level 2 | Fair Value, Recurring | Commercial paper | Cash and Cash Equivalents | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | | 2,686 |
Level 2 | Fair Value, Recurring | Money market funds | Cash and Cash Equivalents | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 0 | 0 |
Level 2 | Fair Value, Recurring | Asset-backed securities | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 6,452 | 7,740 |
Level 2 | Fair Value, Recurring | Certificates of deposit | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 15,337 | |
Level 2 | Fair Value, Recurring | Commercial paper | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 44,000 | 9,383 |
Level 2 | Fair Value, Recurring | Corporate notes and bonds | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 129,128 | 128,104 |
Level 2 | Fair Value, Recurring | Sovereign bonds | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 7,253 | 8,436 |
Level 2 | Fair Value, Recurring | U.S. government and agency securities | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 0 | 1,467 |
Level 3 | Fair Value, Recurring | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 0 | 0 |
Liabilities: | | |
Contingent earn-out consideration liability | 21,040 | |
Total contingent earn-out consideration liability | 21,040 | |
Level 3 | Fair Value, Recurring | Cash and Cash Equivalents | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 0 | 0 |
Level 3 | Fair Value, Recurring | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 0 | 0 |
Level 3 | Fair Value, Recurring | Commercial paper | Cash and Cash Equivalents | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | | 0 |
Level 3 | Fair Value, Recurring | Money market funds | Cash and Cash Equivalents | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 0 | 0 |
Level 3 | Fair Value, Recurring | Asset-backed securities | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 0 | 0 |
Level 3 | Fair Value, Recurring | Certificates of deposit | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 0 | |
Level 3 | Fair Value, Recurring | Commercial paper | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 0 | 0 |
Level 3 | Fair Value, Recurring | Corporate notes and bonds | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 0 | 0 |
Level 3 | Fair Value, Recurring | Sovereign bonds | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 0 | 0 |
Level 3 | Fair Value, Recurring | U.S. government and agency securities | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | $ 0 | $ 0 |