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Debt Instruments (Tables)

9 Months Ended

Sep. 30, 2017

Debt Instruments

Schedule of liability components of the Convertible Notes

The Convertible Notes consist of the following (in thousands): as of September 30, 2017 and December 31, 2016:

Liability component		September 30, 2017			December 31, 2016
Principal		$	250,000		$	250,000
Less: debt discount (1)		(83,972		)	(90,807		)
Less: deferred financing(1)		(4,393		)	(4,729		)
Net carrying value of the debt		$	161,635		$	154,464

(1)  Included in the Consolidated Balance Sheets within Convertible Senior Notes (due 2023) and amortized to interest expense over the remaining life of the Convertible Senior Notes using the effective interest rate method.

Components of total interest expense recognized related to the Convertible Notes

Components (In thousands)		Three Months ended September 30, 2017			Nine Months ended September 30, 2017
Contractual interest expense		$	1,887		$	5,641
Amortization of debt discount		2,342			6,835
Amortization of deferred financing		122			344
Total		$	4,351		$	12,820

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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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