Long-term Debt (Tables)

3 Months Ended

Mar. 31, 2017

Debt Disclosure [Abstract]

Schedule of convertible debt

The following table summarizes the carrying value of the long-term debt (in thousands):

	As of			As of
	March 31,		December 31,
	2017			2016
Carrying value	$	120,706		$	120,283
Unamortized discount	4,294			4,717
Principal amount	$	125,000		$	125,000
Remaining amortization period (years)	4.7			4.9