Long-Term Debt (Schedule of Debt) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019	Jun. 26, 2019
Debt Instrument [Line Items]
Less: Total unamortized debt issuance costs	$ (10,734)	$ (11,945)
Long-term debt, net	1,014,740	1,006,493
Term Loan due 2026
Debt Instrument [Line Items]
Debt, gross	470,724	523,688
Less: current portion	(5,250)	(5,250)
6.75% Senior Notes
Debt Instrument [Line Items]
Debt, gross	$ 500,000	$ 500,000
Interest rate	6.75%	6.75%	6.75%
2020 Revolving Credit Facility
Debt Instrument [Line Items]
Debt, gross	$ 60,000	$ 0

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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

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

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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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