Convertible Senior Notes (Tables)

6 Months Ended

Jun. 30, 2017

Convertible Senior Notes

Summary of the 2022 Notes

The 2022 Notes consist of the following (in thousands):

	As of June 30,
Liability component	2017
Principal	$	275,000
Less: Debt issuance costs, net (1)		(73,605)
Net carrying amount	$	201,395

(1) Included in the accompanying consolidated balance sheets within convertible senior notes and amortized to interest expense over the expected life of the 2022 Notes using the effective interest rate method.

Schedule of total interest expense recognized related to the 2022 Notes

The following table sets forth total interest expense recognized related to the 2022 Notes (in thousands):

	Six Months Ended June 30,
	2017
Contractual interest expense	$	68
Amortization of debt discount		77
Total	$	145
Effective interest rate of the liability component		10.0	%