Fair Value Measurements - Assets and Liabilities at Fair Value (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Mar. 31, 2022 |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | $ 666,162 | |
Cash and Cash Equivalents | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 98,332 | |
Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 666,162 | $ 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 | 5,836 | 7,740 |
Commercial paper | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 5,040 | 9,383 |
Corporate notes and bonds | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 120,313 | 128,104 |
Sovereign bonds | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 7,351 | 8,436 |
U.S. government and agency securities | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 527,622 | 531,641 |
Fair Value, Recurring | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 764,494 | 708,062 |
Liabilities: | | |
Contingent earn-out consideration liability | 21,080 | |
Total contingent earn-out consideration liability | 21,080 | |
Fair Value, Recurring | Cash and Cash Equivalents | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 98,332 | 22,758 |
Fair Value, Recurring | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 666,162 | 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 | 98,332 | 20,072 |
Fair Value, Recurring | Asset-backed securities | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 5,836 | 7,740 |
Fair Value, Recurring | Commercial paper | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 5,040 | 9,383 |
Fair Value, Recurring | Corporate notes and bonds | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 120,313 | 128,104 |
Fair Value, Recurring | Sovereign bonds | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 7,351 | 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 | 527,622 | 531,641 |
Level 1 | Fair Value, Recurring | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 624,492 | 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 | 98,332 | 20,072 |
Level 1 | Fair Value, Recurring | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 526,160 | 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 | 98,332 | 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 | 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 | 526,160 | 530,174 |
Level 2 | Fair Value, Recurring | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 140,002 | 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 | 140,002 | 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 | 5,836 | 7,740 |
Level 2 | Fair Value, Recurring | Commercial paper | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 5,040 | 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 | 120,313 | 128,104 |
Level 2 | Fair Value, Recurring | Sovereign bonds | Available-for-sale Securities | | |
Assets, Fair Value Disclosure [Abstract] | | |
Cash equivalents and marketable securities | 7,351 | 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 | 1,462 | 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 | 21,080 | |
Total contingent earn-out consideration liability | 21,080 | |
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 | 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 |