Short and Long-Term Debt and Commitments Related to Letters of Credit Long-Term Debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Debt instrument [Line Items]
Notes payable	$ 543	$ 0
Current portion of finance leases	4,794	3,046
Short-term debt	45,766	26,872
Revolving credit facility, maximum borrowing capacity	425,000
Revolving credit facility, noncurrent	141,616	150,433
Term loans	32,442	29,680
Long-Term Debt, Total	324,058	255,113
Less debt issuance costs	452	519
Less current portion	40,429	23,826
Long-term debt, excluding current maturities	$ 283,177	230,768
Minimum [Member]
Debt instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.10%
Maximum [Member]
Debt instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.225%
Swing-line borrowings [Member]
Debt instrument [Line Items]
Revolving credit facility, noncurrent	$ 6,616	25,433
Accounts receivable securitization [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.10%
Accounts receivable securitization [Member] | Base rate, federal funds [Member]
Debt instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
3.99% Senior unsecured notes [Member]
Debt instrument [Line Items]
Senior unsecured notes	$ 50,000	50,000
4.00% Senior unsecured notes [Member]
Debt instrument [Line Items]
Senior unsecured notes	25,000	25,000
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt instrument [Line Items]
Revolving credit facility, noncurrent	135,000	125,000
6.19% Senior unsecured notes
Debt instrument [Line Items]
Senior unsecured notes	75,000	0
Letter of credit [Member]
Debt instrument [Line Items]
Letters of credit outstanding	94,702	94,435
Letter of credit [Member] | Accounts receivable securitization [Member]
Debt instrument [Line Items]
Revolving credit facility, maximum borrowing capacity	150,000
Letters of credit outstanding	$ 89,689	$ 89,689
Letter of credit [Member] | Accounts receivable securitization [Member] | Minimum [Member]
Debt instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.35%
Letter of credit [Member] | Accounts receivable securitization [Member] | Maximum [Member]
Debt instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.45%
Line of credit [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.50%
Line of credit [Member] | Base rate, federal funds [Member]
Debt instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Line of credit [Member] | Minimum [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.875%
Line of credit [Member] | Maximum [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.50%