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Debt (Tables)

3 Months Ended

Mar. 31, 2018

Debt [Abstract]

Summary of Carrying Value of Convertible Notes

The table below summarizes the carrying value of the 2021 Convertible Notes as of March 31, 2018:

Principal amount		$	52,000
Discount			(12,916	)
Carrying value as of March 31, 2018		$	39,084

X

- Definition

Tabular disclosure of borrowings which can be exchanged for a specified number of another security at the option of the issuer or the holder. Disclosures include, but are not limited to, principal amount, amortized premium or discount, and amount of liability and equity components.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

Name:	us-gaap_DebtDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration