Borrowings - Encore Senior Secured Notes - Narrative (Details) - USD ($)	3 Months Ended
Mar. 31, 2020	Dec. 31, 2019	Aug. 31, 2017
Debt Instrument [Line Items]
Debt issued	$ 672,855,000	$ 672,855,000
Senior secured notes	$ 292,500,000	$ 308,750,000
2017 Senior Secured Notes \| Term Loan Facility
Debt Instrument [Line Items]
Debt issued			$ 325,000,000.0
Stated interest rate (as a percent)	5.625%
Senior secured notes, periodic principal repayment	$ 16,300,000

Face (par) amount of debt instrument at time of issuance.

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

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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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Amount of the required periodic payments applied to principal.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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