Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Details)

v3.19.3
Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Details) - Recurring Basis - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Level I    
Assets:    
Assets to fund deferred compensation liability $ 0 $ 0
Total assets 32,830 265,554
Liabilities:    
Contingent consideration 0 0
Deferred compensation liability 8,249 6,196
Total liabilities 8,249 6,196
Level I | Money Market Funds    
Assets:    
Money market funds and other 32,830 265,554
Level II    
Assets:    
Assets to fund deferred compensation liability 0 0
Total assets 0 0
Liabilities:    
Contingent consideration 0 0
Deferred compensation liability 0 0
Total liabilities 0 0
Level II | Money Market Funds    
Assets:    
Money market funds and other 0 0
Level III    
Assets:    
Assets to fund deferred compensation liability 8,127 6,346
Total assets 8,127 6,346
Liabilities:    
Contingent consideration 16,830 732
Deferred compensation liability 0 0
Total liabilities 16,830 732
Level III | Money Market Funds    
Assets:    
Money market funds and other 0 0
Fair Value    
Assets:    
Assets to fund deferred compensation liability 8,127 6,346
Total assets 40,957 271,900
Liabilities:    
Contingent consideration 16,830 732
Deferred compensation liability 8,249 6,196
Total liabilities 25,079 6,928
Fair Value | Money Market Funds    
Assets:    
Money market funds and other $ 32,830 $ 265,554