Long-Term Debt (Tables)

6 Months Ended

Jun. 30, 2017

Long-Term Debt

Schedule Of Long-Term Debt

	June 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 June 30, 2017 and December 31, 2016, respectively)	$	184,234	$	14,100
1.00% Convertible Senior Notes due 2020, net of unamortized discount and capitalized debt issuance costs		246,444		241,068
5.125% Senior Notes due 2022, net of capitalized debt issuance costs		247,701		247,371
5.50% Senior Notes due 2025, net of capitalized debt issuance costs		294,960		—
Total long-term debt	$	973,339	$	502,539

Schedule of Interest Expense Related to Convertible Notes

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2017		2016		2017		2016
	(In thousands)
Cash interest per contractual coupon rate	$	719	$	719	$	1,438	$	1,438
Amortization of note discount		2,536		2,406		5,039		4,780
Amortization of debt issuance costs		171		154		337		304
Total interest expense related to Convertible Notes	$	3,426	$	3,279	$	6,814	$	6,522

Schedule of Convertible Debt

	June 30, 2017		December 31, 2016
	(In thousands)
Principal balance	$	287,500	$	287,500
Unamortized discount and capitalized debt issuance costs		(41,056)		(46,432)
Net carrying amount of Convertible Notes	$	246,444	$	241,068