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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Face (par) amount of the original debt instrument that was repurchased.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Price of a single share of a number of saleable stocks of a company.

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Long-term Debt - Convertible senior notes (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended
	Jan. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Convertible Senior Unsecured Notes
Debt Instrument [Line Items]
Unamortized debt issuance costs		$ 11.1	$ 15.4
2024 Notes \| Direct registered offering
Debt Instrument [Line Items]
Shares issued	17,777,679
Share Price	$ 9.25
Principal amount of debt repurchase	$ 123.4
Principal amount outstanding	138.9
Unamortized debt issuance costs	3.6
Loss on extinguishment of debt	$ 7.8