Debt (Tables)

9 Months Ended

Sep. 30, 2015

Schedule of outstanding debt obligations

Our outstanding debt obligations as of September 30, 2015 and December 31, 2014 consisted of the following (in thousands):

		September 30, 2015		December 31, 2014
2023 Senior Notes	$	490,108	$	—
2015 Term Loan Facility		342,459		—
2.5% Convertible Notes		172,594		167,441
2014 Term Loan Facility		-		327,905
Total long-term debt		1,005,161		495,346
Less: current maturities		17,500		34,000
Long-term debt, net of current maturities	$	987,661	$	461,346

Schedule of total interest expense recognized related to the Convertible Notes

	Three Months Ended September 30,				Nine Months Ended September 30,
	2015		2014		2015		2014
Contractual interest expense	$	1,250	$	1,250	$	3,750	$	3,125
Amortization of debt issuance costs		253		234		733		564
Amortization of debt discount		1,777		1,645		5,153		3,967
Total interest expense	$	3,280	$	3,129	$	9,636	$	7,656

Convertible Debt

Schedule of outstanding debt obligations

	September 30, 2015
Liability component:
Principal	$	200,000
Less: debt discount, net		(27,406)
Net carrying amount	$	172,594
Equity component	$	38,188