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Convertible debt (Tables)

12 Months Ended

Dec. 31, 2014

Debt Instrument [Line Items]

Convertible Debt [Table Text Block]

The Senior Notes consist of the following (in thousands):

		As of December 31, 2014
Liability component:
Principal		$	143,750
Less: debt discount, net of amortization		(33,302		)
Net carrying amount		$	110,448
Equity component (1)		$	28,714

(1) Recorded in the consolidated balance sheet within additional paid-in capital, net of $1.2 million issuance cost in equity.

The following table sets forth total interest expense recognized related to the Senior Notes (in thousands):

		Year Ended December 31, 2014
2.0% coupon		$	162
Amortization of debt issuance costs		46
Amortization of debt discount		283
Total		$	491

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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.

+ References

No definition available.

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