Long Term Debt (Tables)

6 Months Ended

Jun. 30, 2017

Carrying Value of Convertible Senior Notes

The carrying value of the Company’s convertible senior notes is as follows:

	June 30, 2017			December 31, 2016
2.125% Convertible Senior Notes due 2021:
Principal amount	$	115,000		$	115,000
Unamortized debt discount		(15,114	)		(16,777	)
Unamortized debt issuance costs		(2,658	)		(2,951	)
Total convertible senior notes	$	97,228		$	95,272