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Debt and Financing Arrangements (Details)
3 Months Ended
Jul. 03, 2020
Mar. 31, 2021
USD ($)
Sep. 30, 2021
USD ($)
Dec. 31, 2020
USD ($)
Unsecured local credit facilities        
Line of Credit Facility [Line Items]        
Available borrowings     $ 59,800,000  
Other short-term borrowings, outstanding borrowings     $ 600,000 $ 2,800,000
Weighted average interest rate     1.52% 2.00%
Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Outstanding borrowings     $ 0 $ 0
Available borrowings     385,700,000  
Letters of credit outstanding     14,300,000  
Unamortized fees and expenses   $ 700,000    
Revolving Credit Facility | Minimum        
Line of Credit Facility [Line Items]        
Leverage ratio basis spread 0.15%      
Revolving Credit Facility | Maximum        
Line of Credit Facility [Line Items]        
Leverage ratio basis spread 0.30%      
Bridge Loan | Fed Funds Effective Rate Overnight Index Swap Rate        
Line of Credit Facility [Line Items]        
Variable rate of interest 0.50%      
Line of Credit        
Line of Credit Facility [Line Items]        
Secured leverage ratio 3.50      
Increase in leverage ratio 3.75      
Interest coverage ratio 3.00      
Line of Credit | Minimum        
Line of Credit Facility [Line Items]        
Variable rate of interest 0.00%      
Line of Credit | Maximum        
Line of Credit Facility [Line Items]        
Variable rate of interest 0.75%      
Line of Credit | Canadian Dollar Offered Rate Cdor        
Line of Credit Facility [Line Items]        
Variable rate of interest 1.00%      
Line of Credit | Canadian Dollar Offered Rate Cdor | Minimum        
Line of Credit Facility [Line Items]        
Leverage ratio basis spread 1.00%      
Line of Credit | Canadian Dollar Offered Rate Cdor | Maximum        
Line of Credit Facility [Line Items]        
Leverage ratio basis spread 1.75%      
Letters of Credit        
Line of Credit Facility [Line Items]        
Outstanding borrowings     18,000,000 11,700,000
Line of credit secured     14,800,000 $ 8,300,000
Maximum commitment     $ 57,500,000