Credit Arrangements (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Credit Agreements
Total debt	$ 1,151,735	$ 665,660
Unamortized debt issuance costs	(8,283)	(4,198)
Total debt, net	1,143,452	661,462
Current portion of long-term debt	(78,137)	(67,230)
Long-term debt, net of current portion	1,065,315	594,232
Term Loan
Credit Agreements
Total debt	933,188	520,281
Revolving Credit Facility
Credit Agreements
Total debt	100,000
Commercial equipment notes
Credit Agreements
Total debt	98,064	107,934
Mortgages
Credit Agreements
Total debt	$ 20,483	$ 37,445

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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