Other cost incurred related to the issuance of the debt.

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The amount of income tax benefit on equity component of transaction costs.

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No definition available.

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Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Convertible Notes Payable, excluding current portion. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

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The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

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- Definition

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

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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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No definition available.

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- Definition

Fair value amount of debt instrument that was repurchased.

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No definition available.

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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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Convertible Senior Notes (Details) - USD ($) $ in Thousands		1 Months Ended
Convertible Senior Notes (Details) - USD ($) $ in Thousands	Mar. 08, 2018	Sep. 30, 2019	Dec. 31, 2018	Mar. 31, 2018
Convertible Senior Notes
Principal amount		$ 100,000
Net carrying amount		107,760	$ 63,247
Convertible Senior Notes
Convertible Senior Notes
Principal amount		40,000
$40M Convertible Senior Note
Convertible Senior Notes
Principal amount		40,000
Maturity principal amount		48,000
Unamortized debt discount		(8,000)
Unamortized debt issuance costs		(948)
Net carrying amount		39,052
$100M Convertible Senior Notes
Convertible Senior Notes
Principal amount		100,000		$ 100,000
Unamortized debt discount		(29,605)
Unamortized debt issuance costs		(1,687)
Net carrying amount		68,708
Carrying amount of the equity component		37,702
Other issuance costs	$ 900	1,700
Income tax benefit on equity component		$ 9,200