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Required minimum consolidated fixed charge coverage ratio

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Secured Debt, Net of Unamortized Issuance Costs

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- Definition

Senior Debt, Maximum Borrowing Capacity

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- Definition

Senior debt, amount outstanding

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No definition available.

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Unsecured line of credit, amount outstanding

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- Definition

Unsecured line of credit, maximum facility

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

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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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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No definition available.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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- Definition

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

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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No definition available.

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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No definition available.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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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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Senior Debt (Details) - USD ($)	3 Months Ended	12 Months Ended
Senior Debt (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020	Feb. 17, 2021	Dec. 31, 2019	Aug. 05, 2019
Debt Instrument [Line Items]
Senior debt		$ 197,500,000		$ 239,500,000
Original issue discount					$ 2,000,000.0
Debt issuance costs					$ 6,300,000
Unamortized debt issuance expense		(7,010,000)		(8,587,000)
Letters of credit, amount outstanding		90,700,000
Senior debt, net		190,490,000		230,913,000
Debt Issuance Costs [Member]
Debt Instrument [Line Items]
Unamortized debt issuance expense		(5,400,000)
Original Issue Discount [Member]
Debt Instrument [Line Items]
Unamortized debt issuance expense		(1,600,000)
Subsequent Event
Debt Instrument [Line Items]
Required minimum consolidated fixed charge coverage ratio			110.00%
Subsequent Event \| Minimum [Member]
Debt Instrument [Line Items]
Line of credit commitment fee percentage	0.25%
Subsequent Event \| Maximum [Member]
Debt Instrument [Line Items]
Line of credit commitment fee percentage	0.375%
Term loan [Member]
Debt Instrument [Line Items]
Senior debt		197,500,000		199,500,000
Maximum borrowing capacity		200,000,000		200,000,000
Amount outstanding		197,500,000
Amount available		$ 0		0
Maturity date		Aug. 05, 2026
2021		$ 2,000,000
2022		2,000,000
2023		2,000,000
2024		2,000,000
2025		2,000,000
Thereafter		187,500,000
Term loan [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Senior debt		200,000,000
Term loan [Member] \| Subsequent Event \| Maximum [Member]
Debt Instrument [Line Items]
Senior debt			$ 875,000,000
Term loan [Member] \| Subsequent Event \| Eurodollar [Member]
Debt Instrument [Line Items]
Basis margin on variable rate	4.00%
Term loan [Member] \| Subsequent Event \| LIBOR [Member]
Debt Instrument [Line Items]
Basis margin on variable rate	0.75%
ABL credit facility [Member]
Debt Instrument [Line Items]
Senior debt		0		40,000,000
ABL credit facility availability		209,268,000		168,200,000
Maximum borrowing capacity		300,000,000		300,000,000
Amount outstanding		$ 0
Maturity date		Aug. 05, 2024
2021		$ 0
2022		0
2023		0
2024		0
2025		0
Thereafter		0
ABL credit facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Senior debt		300,000,000
ABL credit facility [Member] \| Subsequent Event \| Maximum [Member]
Debt Instrument [Line Items]
Senior debt			$ 550,000,000
ABL credit facility [Member] \| Subsequent Event \| Eurodollar [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Basis margin on variable rate	1.50%
ABL credit facility [Member] \| Subsequent Event \| Eurodollar [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Basis margin on variable rate	2.00%
Term Loan and Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		500,000,000		500,000,000
Amount available		209,268,000		168,200,000
Line of Credit [Member]
Debt Instrument [Line Items]
Unsecured line of credit, maximum facility		0		0
Unsecured line of credit, amount outstanding		0		0
Amount available		0		0
Senior Debt [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		500,000,000		500,000,000
Amount outstanding		197,500,000		239,500,000
Amount available		209,268,000		$ 168,200,000
2021		2,000,000
2022		2,000,000
2023		2,000,000
2024		2,000,000
2025		2,000,000
Thereafter		$ 187,500,000