Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Schedule of Assets and Liabilities at Fair Value on Recurring Basis (Detail)

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Fair Value Measurements - Schedule of Assets and Liabilities at Fair Value on Recurring Basis (Detail) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Jun. 30, 2023
Dec. 31, 2022
Assets        
Assets held in rabbi trust $ 11,686 $ 10,838    
Marketable debt securities, available-for-sale 173,507 236,340    
Liabilities:        
Contingent consideration 5,513   $ 6,518  
Deferred consideration 759 1,571    
Deferred compensation liability 9,456 8,356    
Short-term investments:        
Assets        
Marketable debt securities, available-for-sale 119,807 168,881    
Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 53,700 67,459    
U.S. treasuries | Short-term investments:        
Assets        
Marketable debt securities, available-for-sale 45,489 91,840    
U.S. treasuries | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 776 9,852    
U.S. government sponsored entities | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 968 1,040    
Corporate debt | Short-term investments:        
Assets        
Marketable debt securities, available-for-sale 74,318 77,041    
Corporate debt | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 40,564 44,565    
ABS and other | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 11,392 12,002    
Recurring        
Assets        
Convertible notes 5,664 5,081    
Cash equivalents 90,279 96,362    
Recurring | Short-term investments:        
Assets        
Marketable debt securities, available-for-sale 119,807 168,881    
Recurring | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 53,700 67,459    
Recurring | Commercial paper        
Assets        
Cash equivalents 24,391 27,998    
Recurring | Money market funds        
Assets        
Cash equivalents 65,888 68,364    
Recurring | Assets held in rabbi trust        
Assets        
Assets held in rabbi trust 11,686 10,838    
Recurring | U.S. treasuries | Short-term investments:        
Assets        
Marketable debt securities, available-for-sale 45,489 91,840    
Recurring | U.S. treasuries | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 776 9,852    
Recurring | U.S. government sponsored entities | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 968 1,040    
Recurring | Corporate debt | Short-term investments:        
Assets        
Marketable debt securities, available-for-sale 74,318 77,041    
Recurring | Corporate debt | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 40,564 44,565    
Recurring | ABS and other | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 11,392 12,002    
Level 1 | Recurring        
Assets        
Convertible notes 0 0    
Cash equivalents 65,888 68,364    
Liabilities:        
Deferred consideration 0 0    
Deferred compensation liability 9,456 8,356    
Level 1 | Recurring | Short-term investments:        
Assets        
Marketable debt securities, available-for-sale 45,489 91,840    
Level 1 | Recurring | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 776 9,852    
Level 1 | Recurring | Commercial paper        
Assets        
Cash equivalents 0 0    
Level 1 | Recurring | Money market funds        
Assets        
Cash equivalents 65,888 68,364    
Level 1 | Recurring | Assets held in rabbi trust        
Assets        
Assets held in rabbi trust 0 0    
Level 1 | Recurring | U.S. treasuries | Short-term investments:        
Assets        
Marketable debt securities, available-for-sale 45,489 91,840    
Level 1 | Recurring | U.S. treasuries | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 776 9,852    
Level 1 | Recurring | U.S. government sponsored entities | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 0 0    
Level 1 | Recurring | Corporate debt | Short-term investments:        
Assets        
Marketable debt securities, available-for-sale 0 0    
Level 1 | Recurring | Corporate debt | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 0 0    
Level 1 | Recurring | ABS and other | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 0 0    
Level 2 | Recurring        
Assets        
Convertible notes 0 0    
Cash equivalents 24,391 27,998    
Liabilities:        
Deferred consideration 759 1,571    
Deferred compensation liability 0 0    
Level 2 | Recurring | Short-term investments:        
Assets        
Marketable debt securities, available-for-sale 74,318 77,041    
Level 2 | Recurring | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 52,924 57,607    
Level 2 | Recurring | Commercial paper        
Assets        
Cash equivalents 24,391 27,998    
Level 2 | Recurring | Money market funds        
Assets        
Cash equivalents 0 0    
Level 2 | Recurring | Assets held in rabbi trust        
Assets        
Assets held in rabbi trust 11,686 10,838    
Level 2 | Recurring | U.S. treasuries | Short-term investments:        
Assets        
Marketable debt securities, available-for-sale 0 0    
Level 2 | Recurring | U.S. treasuries | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 0 0    
Level 2 | Recurring | U.S. government sponsored entities | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 968 1,040    
Level 2 | Recurring | Corporate debt | Short-term investments:        
Assets        
Marketable debt securities, available-for-sale 74,318 77,041    
Level 2 | Recurring | Corporate debt | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 40,564 44,565    
Level 2 | Recurring | ABS and other | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 11,392 12,002    
Level 3 | Recurring        
Assets        
Convertible notes 5,664 5,081    
Cash equivalents 0 0    
Liabilities:        
Deferred consideration 0 0    
Deferred compensation liability 0 0    
Level 3 | Recurring | Short-term investments:        
Assets        
Marketable debt securities, available-for-sale 0 0    
Level 3 | Recurring | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 0 0    
Level 3 | Recurring | Commercial paper        
Assets        
Cash equivalents 0 0    
Level 3 | Recurring | Money market funds        
Assets        
Cash equivalents 0 0    
Level 3 | Recurring | Assets held in rabbi trust        
Assets        
Assets held in rabbi trust 0 0    
Level 3 | Recurring | U.S. treasuries | Short-term investments:        
Assets        
Marketable debt securities, available-for-sale 0 0    
Level 3 | Recurring | U.S. treasuries | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 0 0    
Level 3 | Recurring | U.S. government sponsored entities | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 0 0    
Level 3 | Recurring | Corporate debt | Short-term investments:        
Assets        
Marketable debt securities, available-for-sale 0 0    
Level 3 | Recurring | Corporate debt | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 0 0    
Level 3 | Recurring | ABS and other | Long-term investments:        
Assets        
Marketable debt securities, available-for-sale 0 0    
Contingent consideration        
Liabilities:        
Contingent consideration 5,513 5,482   $ 7,067
Contingent consideration | Level 1 | Recurring        
Liabilities:        
Contingent consideration 0 0    
Contingent consideration | Level 2 | Recurring        
Liabilities:        
Contingent consideration 0 0    
Contingent consideration | Level 3        
Liabilities:        
Contingent consideration $ 5,513 $ 5,482