Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
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Debt (Details) - USD ($)	Jun. 30, 2018	Jun. 01, 2018	Dec. 31, 2017
Convertible Notes Payable
Debt Instrument [Line Items]
Face amount of the Notes	$ 158,750,000		$ 143,750,000
Less unamortized discounts and debt issuance costs	28,871,000		22,773,000
Carrying amount of the Notes	129,879,000		120,977,000
Convertible Note 2019
Debt Instrument [Line Items]
Face amount of the Notes	68,660,000		143,750,000
Convertible Note 2019 \| Convertible Notes Payable
Debt Instrument [Line Items]
Face amount of the Notes	68,660,000		143,750,000
Term Loan 2021
Debt Instrument [Line Items]
Face amount of the Notes	15,000,000	$ 25,000,000
Term Loan 2021 \| Convertible Notes Payable
Debt Instrument [Line Items]
Face amount of the Notes	15,000,000		0
Convertible Note 2023
Debt Instrument [Line Items]
Face amount of the Notes	75,090,000
Less unamortized discounts and debt issuance costs	400,000
Convertible Note 2023 \| Convertible Notes Payable
Debt Instrument [Line Items]
Face amount of the Notes	$ 75,090,000		$ 0