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Fair Value of Financial Instruments - Fair Value of Financial Assets and Liabilities (Details) - Fair Value, Recurring - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Assets:    
Total assets $ 44,325 $ 37,219
Liabilities:    
Acquisition contingent consideration 3 1,196
Deferred compensation plan liabilities 81,719 79,081
Cash-settled equity awards 715 536
Total liabilities 82,437 80,813
Deferred compensation plan, current 2,182 2,067
Interest Rate Swap    
Assets:    
Interest rate swap 41,302 37,200
Level 1    
Assets:    
Total assets 3,023 19
Liabilities:    
Acquisition contingent consideration 0 0
Deferred compensation plan liabilities 81,719 79,081
Cash-settled equity awards 715 536
Total liabilities 82,434 79,617
Level 1 | Interest Rate Swap    
Assets:    
Interest rate swap 0 0
Level 2    
Assets:    
Total assets 41,302 37,200
Liabilities:    
Acquisition contingent consideration 0 0
Deferred compensation plan liabilities 0 0
Cash-settled equity awards 0 0
Total liabilities 0 0
Level 2 | Interest Rate Swap    
Assets:    
Interest rate swap 41,302 37,200
Level 3    
Assets:    
Total assets 0 0
Liabilities:    
Acquisition contingent consideration 3 1,196
Deferred compensation plan liabilities 0 0
Cash-settled equity awards 0 0
Total liabilities 3 1,196
Level 3 | Interest Rate Swap    
Assets:    
Interest rate swap 0 0
Money Market Funds    
Assets:    
Money market funds 3,023 19
Money Market Funds | Level 1    
Assets:    
Money market funds 3,023 19
Money Market Funds | Level 2    
Assets:    
Money market funds 0 0
Money Market Funds | Level 3    
Assets:    
Money market funds $ 0 $ 0