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Fair Value and Equity Investments, Fair Value (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Fair Value and Equity Investments [Abstract]      
Term of variable rate 30 days    
Contingent Consideration [Member]      
Changes in Fair Value of Level 3 Contingent Consideration [Roll Forward]      
Beginning balance $ (6,364) $ (10,341)  
Changes in fair value of contingent consideration 93 115  
Ending balance (6,271) (10,226)  
Fair Value on a Recurring Basis [Member]      
Financial Assets (Liabilities) [Abstract]      
Cash equivalents and current investments 46,632   $ 55,356
Derivative financial instruments asset 16,731   19,738
Life insurance contracts 42,053   40,055
Contingent consideration (6,271)   (6,364)
Financial assets (liabilities) 99,145   108,785
Fair Value on a Recurring Basis [Member] | Level 1 [Member]      
Financial Assets (Liabilities) [Abstract]      
Cash equivalents and current investments 46,632   55,356
Derivative financial instruments asset 0   0
Life insurance contracts 0   0
Contingent consideration 0   0
Financial assets (liabilities) 46,632   55,356
Fair Value on a Recurring Basis [Member] | Level 2 [Member]      
Financial Assets (Liabilities) [Abstract]      
Cash equivalents and current investments 0   0
Derivative financial instruments asset 16,731   19,738
Life insurance contracts 0   0
Contingent consideration 0   0
Financial assets (liabilities) 16,731   19,738
Fair Value on a Recurring Basis [Member] | Level 3 [Member]      
Financial Assets (Liabilities) [Abstract]      
Cash equivalents and current investments 0   0
Derivative financial instruments asset 0   0
Life insurance contracts 42,053   40,055
Contingent consideration (6,271)   (6,364)
Financial assets (liabilities) 35,782   $ 33,691
Life Insurance Contracts [Member]      
Changes in Fair Value of Level 3 Marketable Securities [Roll Forward]      
Beginning balance 40,055 49,851  
Actual return on plan assets 1,998 (3,401)  
Ending balance $ 42,053 $ 46,450