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Long-Term Debt - Senior Notes Net Interest Expense (Details) - Senior Notes - 6.125% Senior Notes - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Interest Expense and Amortization of Debt Issue Costs
Interest expense	$ 8,711	$ 8,693
Debt issue cost amortization	321	321
Debt discount amortization	289	271
Total	$ 9,321	$ 9,285

X

- Definition

Amount of amortization expense attributable to debt issuance costs.

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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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