Long-Term Debt (Tables)

9 Months Ended

Sep. 30, 2017

Long-Term Debt

Schedule Of Long-Term Debt

	September 30, 2017		December 31, 2016
	(In thousands)
Revolving credit facility, including swingline credit facility (weighted average combined interest rate of 2.9% and 4.0% as of September 30, 2017 and December 31, 2016, respectively)	$	157,630	$	14,100
1.00% Convertible Senior Notes due 2020, net of unamortized discount and capitalized debt issuance costs		249,189		241,068
5.125% Senior Notes due 2022, net of capitalized debt issuance costs		247,869		247,371
5.50% Senior Notes due 2025, net of capitalized debt issuance costs		295,087		—
Total long-term debt	$	949,775	$	502,539

Schedule of Interest Expense Related to Convertible Notes

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
	(In thousands)
Cash interest per contractual coupon rate	$	719	$	719	$	2,157	$	2,157
Amortization of note discount		2,569		2,439		7,608		7,219
Amortization of debt issuance costs		176		159		513		463
Total interest expense related to Convertible Notes	$	3,464	$	3,317	$	10,278	$	9,839

Schedule of Convertible Debt

	September 30, 2017		December 31, 2016
	(In thousands)
Principal balance	$	287,500	$	287,500
Unamortized discount and capitalized debt issuance costs		(38,311)		(46,432)
Net carrying amount of Convertible Notes	$	249,189	$	241,068