Amount of short-term and long-term debt and lease obligation.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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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 of long-term debt and lease obligation, classified as noncurrent.

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Amount of long-term debt and lease obligation, classified as current.

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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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Indebtedness and Credit Agreement - Indebtedness and lease financing obligations (Details) - USD ($) $ in Thousands	Mar. 04, 2023	Dec. 09, 2022	Nov. 30, 2022	Nov. 03, 2022	Jun. 29, 2022	Jun. 13, 2022	Feb. 26, 2022	May 28, 2021	Jul. 24, 2020	Jul. 10, 2020	Jul. 09, 2020	Jun. 25, 2020	Dec. 20, 2018
Indebtedness and credit agreements
Debt instrument, stated interest rate (as a percent)										6.125%
Lease financing obligations	$ 18,912						$ 20,374
Total Debt	2,944,170						2,753,360
Current maturities of long-term debt and lease financing obligations	(6,332)						(5,544)
Long-term debt and lease financing obligations, less current maturities	2,937,838						2,747,816
Senior Secured Debt
Indebtedness and credit agreements
Long-term debt	$ 1,581,793						1,038,646
6.125% senior notes due April 2023
Indebtedness and credit agreements
Debt instrument, stated interest rate (as a percent)	6.125%							6.125%	6.125%			6.125%
FILO term loan due August 2026
Indebtedness and credit agreements
Long-term debt	$ 397,910						347,656
Principal amount of debt	400,000						350,000
Unamortized debt issuance costs	2,090						2,344
FILO term loan due December 2023
Indebtedness and credit agreements
Principal amount of debt													$ 450,000
Senior secured revolving credit facility due August 2026
Indebtedness and credit agreements
Long-term debt	1,183,883						690,990
Principal amount of debt	1,200,000						709,000
Unamortized debt issuance costs	16,117						18,010
Second Lien Secured Debt
Indebtedness and credit agreements
Long-term debt	1,156,132						1,428,697
7.5% senior notes due July 2025
Indebtedness and credit agreements
Long-term debt	$ 317,473						$ 593,176
Debt instrument, stated interest rate (as a percent)	7.50%	7.50%	7.50%	7.50%	7.50%	7.50%	7.50%
Principal amount of debt	$ 320,002						$ 600,000
Unamortized debt issuance costs	2,529						6,824
8.0% senior secured notes due November 2026
Indebtedness and credit agreements
Long-term debt	$ 838,659						$ 835,521
Debt instrument, stated interest rate (as a percent)	8.00%					8.00%	8.00%		8.00%		8.00%	8.00%
Principal amount of debt	$ 849,918						$ 849,918		$ 849,918			$ 600,000
Unamortized debt issuance costs	11,259						14,397
Unguaranteed Unsecured Debt
Indebtedness and credit agreements
Long-term debt	187,333						265,643
7.7% notes due February 2027
Indebtedness and credit agreements
Long-term debt	$ 185,293						$ 236,744
Debt instrument, stated interest rate (as a percent)	7.70%				7.70%		7.70%
Principal amount of debt	$ 185,691						$ 237,386
Unamortized debt issuance costs	398						642
6.875% fixed-rate senior notes due December 2028
Indebtedness and credit agreements
Long-term debt	$ 2,040						$ 28,899
Debt instrument, stated interest rate (as a percent)	6.875%				6.875%		6.875%
Principal amount of debt	$ 2,046						$ 29,001
Unamortized debt issuance costs	$ 6						$ 102