Debt (Tables)

12 Months Ended

Dec. 31, 2015

Debt

Schedule of debt

Debt consists of the following (in thousands):

	As of December 31,
	2015		2014
2013 Senior Secured Credit Facility, principal of $520 payable quarterly, matures in July 2020, net of unamortized discount of $751 and $360 as of December 31, 2015 and 2014, respectively	$	201,884	$	211,673
Less current portion		(14,805)		(9,460)
	$	187,079	$	202,213

Schedule of Maturities of Debt

Maturities of debt are as follows as of December 31, 2015 (in thousands):

Year ending December 31:
2016	$	14,805
2017		2,078
2018		2,078
2019		2,078
2020		181,596
	$	202,635

Summary of carrying value and fair value of debt

The following table summarizes the carrying values and fair values of the 2013 Senior Secured Credit Facility as of December 31, 2015 and 2014 (in thousands):

	As of December 31,
	2015				2014
	Carrying Amounts		Estimated Fair Value		Carrying Amounts		Estimated Fair Value
2013 Senior Secured Credit Facility	$	201,884	$	198,583	$	211,673	$	208,853