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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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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- Definition

The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity.

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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Debt - Prepayments of Senior Secured Term Loans (Details) - USD ($) $ in Thousands	Aug. 01, 2018	Feb. 28, 2018	Jun. 30, 2019	Dec. 31, 2018
Debt
Total debt			$ 447,234	$ 447,234
Senior secured term loans \| Term B Loan
Debt
Prepayments of principal on senior secured term loans	$ 110,000	$ 120,000
Total debt			$ 13,750	$ 13,750
Senior secured term loans \| Term B Loan \| Other Expense
Debt
Write-off of debt issuance costs	$ 2,600	$ 3,100