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Assets and Liabilities Measured at Fair Value - Components by Hierarchy Level (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Assets:    
Fair value of assets $ 183,232 $ 242,048
Liabilities:    
Contingent consideration payable 19,151 20,339
Deferred compensation plan liability 5,405 4,800
Fair value of liabilities 24,556 25,139
Commercial paper    
Assets:    
Fair value of assets 131,820 32,311
U.S. government agency bonds    
Assets:    
Fair value of assets 35,151  
Asset-backed securities    
Assets:    
Fair value of assets 5,998 30,056
Money market    
Assets:    
Fair value of assets 5,755 5,150
Corporate debt securities    
Assets:    
Fair value of assets 4,508 174,531
Level 2    
Assets:    
Fair value of assets 183,232 242,048
Liabilities:    
Contingent consideration payable 0 0
Deferred compensation plan liability 5,405 4,800
Fair value of liabilities 5,405 4,800
Level 2 | Commercial paper    
Assets:    
Fair value of assets 131,820 32,311
Level 2 | U.S. government agency bonds    
Assets:    
Fair value of assets 35,151  
Level 2 | Asset-backed securities    
Assets:    
Fair value of assets 5,998 30,056
Level 2 | Money market    
Assets:    
Fair value of assets 5,755 5,150
Level 2 | Corporate debt securities    
Assets:    
Fair value of assets 4,508 174,531
Level 3    
Liabilities:    
Contingent consideration payable 19,151 20,339
Deferred compensation plan liability 0 0
Fair value of liabilities $ 19,151 $ 20,339