Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2014

Long-Term Debt [Abstract]

Schedule Of Long-Term Debt

	2014		2013
	(In thousands)
Revolving credit facility, including swing-line credit facility (weighted-average combined interest rate of 2.2% and 2.5% as of December 31, 2014 and 2013, respectively)	$	137,292	$	72,547
8.25% Senior subordinated notes due September 2018		—		200,000
5.125% Senior notes due August 2022		250,000		—
1.00% Convertible senior notes due December 2020, net of discount		225,370		216,635
Equipment financing notes		35		1,332
Total long-term debt		612,697		490,514
Less: current portion		35		1,289
Total long-term debt, excluding current portion	$	612,662	$	489,225

Schedule of Interest Expense Related to Convertible Notes

	2014		2013		2012
	(In thousands)
Cash interest per contractual coupon rate	$	2,875	$	288	$	—
Amortization of note discount		8,724		848		—
Amortization of deferred financing costs		518		48		—
Total interest expense related to Convertible Notes	$	12,117	$	1,184	$	—

Schedule of Convertible Debt

	2014		2013
	(In thousands)
Principal balance	$	287,500	$	287,500
Discount, net of accumulated amortization		(62,130)		(70,865)
Net carrying amount of Convertible Notes	$	225,370	$	216,635

Schedule Of Maturities Of Long-Term Debt

2015	$	35
2016		—
2017		—
2018		—
2019		137,292
Thereafter		537,500
Total	$	674,827