Debt (Tables)

3 Months Ended

Mar. 31, 2017

Schedule of outstanding debt obligations

Our outstanding debt obligations as of March 31, 2017 and December 31, 2016 consisted of the following (in thousands):



	March 31, 2017		December 31, 2016
2023 Senior Notes	$	489,907	$	489,612
2015 Term Loan Facility	313,881		317,546
Convertible Notes	181,566		179,363
Total long-term debt	985,354		986,521
Less: current maturities	20,455		21,166
Long-term debt, net of current maturities	$	964,899	$	965,355

Schedule of outstanding convertible debt

Our outstanding Convertible Note balances as of March 31, 2017 consisted of the following (in thousands):



	March 31, 2017
Liability component:
Principal	$	199,998
Less: debt discount and issuance costs, net	(18,432		)
Net carrying amount	$	181,566

Schedule of total interest expense recognized related to the convertible notes

The following table sets forth total interest expense recognized related to the Convertible Notes during the three months ended March 31, 2017 and 2016 (in thousands):



	Three Months Ended March 31,
	2017		2016
Contractual interest expense	$	1,250	$	1,250
Amortization of debt issuance costs	274		258
Amortization of debt discount	1,929		1,815
Total interest expense	$	3,453	$	3,323