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Fair Value Measurements - Assets and Liabilities at Fair Value (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Mar. 31, 2023
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities $ 750,344 $ 809,247
Cash equivalents    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 84,229 126,275
Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 666,115 682,972
Corporate notes and bonds | Cash equivalents    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 1,180  
Corporate notes and bonds | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 225,822 118,512
Money market funds | Cash equivalents    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 83,049 126,275
Asset-backed securities | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 121 7,200
Certificates of deposit | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities   27,300
Sovereign bonds | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 7,676 7,384
U.S. government and agency securities | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 361,741 444,087
Fair Value, Recurring    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 750,344 809,247
Liabilities:    
Contingent earn-out consideration liability 16,813 21,862
Total contingent earn-out consideration liability 16,813 21,862
Fair Value, Recurring | Cash equivalents    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 84,229 126,275
Fair Value, Recurring | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 666,115 682,972
Fair Value, Recurring | Corporate notes and bonds | Cash equivalents    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 1,180  
Fair Value, Recurring | Corporate notes and bonds | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 225,822 118,512
Fair Value, Recurring | Commercial paper | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 70,755 78,489
Fair Value, Recurring | Money market funds | Cash equivalents    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 83,049 126,275
Fair Value, Recurring | Asset-backed securities | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 121 7,200
Fair Value, Recurring | Certificates of deposit | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities   27,300
Fair Value, Recurring | Sovereign bonds | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 7,676 7,384
Fair Value, Recurring | U.S. government and agency securities | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 361,741 444,087
Level 1 | Fair Value, Recurring    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 438,853 566,023
Liabilities:    
Contingent earn-out consideration liability 0 0
Total contingent earn-out consideration liability 0 0
Level 1 | Fair Value, Recurring | Cash equivalents    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 83,049 126,275
Level 1 | Fair Value, Recurring | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 355,804 439,748
Level 1 | Fair Value, Recurring | Corporate notes and bonds | Cash equivalents    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 0  
Level 1 | Fair Value, Recurring | Corporate notes and bonds | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 0 0
Level 1 | Fair Value, Recurring | Commercial paper | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 0 0
Level 1 | Fair Value, Recurring | Money market funds | Cash equivalents    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 83,049 126,275
Level 1 | Fair Value, Recurring | Asset-backed securities | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 0 0
Level 1 | Fair Value, Recurring | Certificates of deposit | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities   0
Level 1 | Fair Value, Recurring | Sovereign bonds | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 0 0
Level 1 | Fair Value, Recurring | U.S. government and agency securities | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 355,804 439,748
Level 2 | Fair Value, Recurring    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 311,491 243,224
Liabilities:    
Contingent earn-out consideration liability 0 0
Total contingent earn-out consideration liability 0 0
Level 2 | Fair Value, Recurring | Cash equivalents    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 1,180 0
Level 2 | Fair Value, Recurring | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 310,311 243,224
Level 2 | Fair Value, Recurring | Corporate notes and bonds | Cash equivalents    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 1,180  
Level 2 | Fair Value, Recurring | Corporate notes and bonds | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 225,822 118,512
Level 2 | Fair Value, Recurring | Commercial paper | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 70,755 78,489
Level 2 | Fair Value, Recurring | Money market funds | Cash equivalents    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 0 0
Level 2 | Fair Value, Recurring | Asset-backed securities | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 121 7,200
Level 2 | Fair Value, Recurring | Certificates of deposit | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities   27,300
Level 2 | Fair Value, Recurring | Sovereign bonds | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 7,676 7,384
Level 2 | Fair Value, Recurring | U.S. government and agency securities | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 5,937 4,339
Level 3 | Fair Value, Recurring    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 0 0
Liabilities:    
Contingent earn-out consideration liability 16,813 21,862
Total contingent earn-out consideration liability 16,813 21,862
Level 3 | Fair Value, Recurring | Cash equivalents    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 0 0
Level 3 | Fair Value, Recurring | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 0 0
Level 3 | Fair Value, Recurring | Corporate notes and bonds | Cash equivalents    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 0  
Level 3 | Fair Value, Recurring | Corporate notes and bonds | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 0 0
Level 3 | Fair Value, Recurring | Commercial paper | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 0 0
Level 3 | Fair Value, Recurring | Money market funds | Cash equivalents    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 0 0
Level 3 | Fair Value, Recurring | Asset-backed securities | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 0 0
Level 3 | Fair Value, Recurring | Certificates of deposit | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities   0
Level 3 | Fair Value, Recurring | Sovereign bonds | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities 0 0
Level 3 | Fair Value, Recurring | U.S. government and agency securities | Marketable Securities    
Assets, Fair Value Disclosure [Abstract]    
Cash equivalents and marketable securities $ 0 $ 0