Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Mar. 31, 2021	Feb. 04, 2021
Long-Term Debt
Face amount	$ 3,460,241	$ 3,376,768
Face amount, long-term	3,457,913	3,374,585
LONG-TERM DEBT, debt issuance costs	(46,156)	(55,555)
Debt issuance costs, current, net	0	0
Debt issuance costs, noncurrent, net	(46,156)	(55,555)
Book value	3,414,085	3,321,213
Current maturities of long-term debt	2,328	2,183
LONG-TERM DEBT, net of debt issuance costs and current maturities	$ 3,411,757	3,319,030
7.5% Senior Secured Notes due 2026
Long-Term Debt
Fixed interest rate	7.50%		7.50%
Face amount	$ 2,050,000	2,050,000
LONG-TERM DEBT, debt issuance costs	(37,491)	(44,246)
Book value	2,012,509	2,005,754
Asset Based Credit Facility
Long-Term Debt
Face amount	156,000	4,000
LONG-TERM DEBT, debt issuance costs	0	0
Book value	$ 156,000	4,000
7.5% Senior Notes due 2023
Long-Term Debt
Fixed interest rate	7.50%
Face amount	$ 499,496	555,251
LONG-TERM DEBT, debt issuance costs	(2,276)	(3,564)
Book value	$ 497,220	551,687
6.125% Senior Notes due 2025
Long-Term Debt
Fixed interest rate	6.125%
Face amount	$ 380,020	380,020
LONG-TERM DEBT, debt issuance costs	(2,666)	(3,297)
Book value	$ 377,354	376,723
7.5% Senior Notes due 2026
Long-Term Debt
Fixed interest rate	7.50%
Face amount	$ 332,402	338,402
LONG-TERM DEBT, debt issuance costs	(3,661)	(4,378)
Book value	328,741	334,024
Other long-term debt
Long-Term Debt
Face amount	42,323	49,095
LONG-TERM DEBT, debt issuance costs	(62)	(70)
Book value	$ 42,261	$ 49,025

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Long term Debt and Capital Lease Obligations Face Amount

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

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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, after accumulated amortization, of debt issuance costs classified as current. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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

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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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