Debt - Components (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	May 12, 2020
Debt Instrument [Line Items]
Interest make-whole payment	$ 300
2025 Notes \| Convertible Debt
Debt Instrument [Line Items]
Principal amount	161,898	$ 161,898	$ 180,400
Interest make-whole payment	317	926
Unamortized debt discount	(2,554)	(2,761)
Unamortized issuance costs	(2,032)	(2,197)
Net carrying amount	$ 157,629	$ 157,866

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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- Definition

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.

+ References

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- Definition

Amount, after accumulated amortization, of debt discount.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

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- Definition

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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