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Assets and Liabilities Measured at Fair Value - Components by Hierarchy Level (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Assets:    
Fair value of assets $ 156,163 $ 242,048
Liabilities:    
Contingent consideration payable 19,266 20,339
Deferred compensation plan liability 4,977 4,800
Fair value of liabilities 24,243 25,139
Commercial paper    
Assets:    
Fair value of assets 102,846 174,531
U.S. government agency bonds    
Assets:    
Fair value of assets 44,964  
Asset-backed securities    
Assets:    
Fair value of assets 2,991 30,056
Money market    
Assets:    
Fair value of assets 5,362 5,150
Level 2    
Assets:    
Fair value of assets 156,163 242,048
Liabilities:    
Contingent consideration payable 0 0
Deferred compensation plan liability 4,977 4,800
Fair value of liabilities 4,977 4,800
Level 2 | Commercial paper    
Assets:    
Fair value of assets 102,846  
Level 2 | U.S. government agency bonds    
Assets:    
Fair value of assets 44,964  
Level 2 | Asset-backed securities    
Assets:    
Fair value of assets 2,991 30,056
Level 2 | Money market    
Assets:    
Fair value of assets 5,362 5,150
Level 2 | Corporate debt securities    
Assets:    
Fair value of assets   32,311
Level 3    
Liabilities:    
Contingent consideration payable 19,266 20,339
Deferred compensation plan liability 0 0
Fair value of liabilities $ 19,266 $ 20,339