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Debt (Tables)

9 Months Ended

Sep. 30, 2016

Debt Disclosure [Abstract]

Convertible Debt

The Convertible Notes consisted of the following at September 30, 2016 (in thousands):

Liability component:
Principal	$	120,000
Less: unamortized debt discount and debt issuance costs	(31,204		)
Net carrying amount	$	88,796
Equity component	$	38,305

Interest Expense Summary

The following table sets forth total interest expense recognized related to the Convertible Notes during the three and nine months ended September 30, 2016 and 2015 (in thousands):

	Three Months Ended September 30,								Nine Months Ended September 30,
	2016				2015				2016				2015
Contractual interest expense	$	1,650			$	1,649			$	4,950			$	2,016
Amortization of debt discount	1,980				1,980				5,940				2,420
Amortization of debt issuance costs	132				132				395				161
Total interest expense	$	3,762			$	3,761			$	11,285			$	4,597

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- 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.

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- Definition

Tabular disclosure of interest income and expense, including, but not limited to, interest income and expense from investments, loans, and securities.

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