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Convertible Senior Notes - Net Carrying Value Of the Liability (Details) - Senior Notes Due 2025 - Convertible Notes Payable $ in Thousands	Mar. 31, 2021 USD ($)
Line of Credit Facility [Line Items]
Principal	$ 230,000
Less: Unamortized debt discount	(53,577)
Less: Unamortized issuance costs	(4,559)
Net carrying amount	$ 171,864

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- Definition

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

Amount, after accumulated amortization, of debt discount.

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

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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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