Borrowings - Schedule of Senior Notes (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Senior notes	$ 311,290	$ 311,085
Senior Unsecured Notes
Debt Instrument [Line Items]
Senior notes	21,543	21,543
Senior Notes
Debt Instrument [Line Items]
Senior notes	313,052	313,052
Unamortized debt issuance costs	(1,344)	(1,470)
Fair value adjustments	(418)	(497)
Long-term debt	311,290	311,085
6.375% Senior Notes, Due 2021 \| Senior Unsecured Notes
Debt Instrument [Line Items]
Senior notes	$ 21,543	21,543
Interest rate (as a percent)	6.375%
8.375% Senior Secured Notes Due In 2022 \| Secured Debt
Debt Instrument [Line Items]
Senior notes	$ 291,509	$ 291,509
Interest rate (as a percent)	8.375%

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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