Long-Term Debt - Senior Notes Net Interest Expense (Details) - Senior Notes - 6.125% Senior Notes - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Interest Expense and Amortization of Debt Issue Costs
Interest expense	$ 8,735	$ 8,715	$ 17,464	$ 17,426
Debt issue cost amortization	321	321	642	642
Debt discount amortization	313	293	621	582
Total	$ 9,369	$ 9,329	$ 18,727	$ 18,650

Amount of amortization expense attributable to debt issuance costs.

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Represents the charge against earnings during the period for commitment fees and debt issuance expenses.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Aggregate amount of interest paid or due on all long-term debt.

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