Net Income per Share (Tables)

6 Months Ended

Jun. 30, 2016

Earnings Per Share [Abstract]

Schedule of calculation of numerator and denominator in earnings per share

	Three Months Ended				Six Months Ended
	June 30,				June 30,
Net Income per Basic and Diluted Share:	2016		2015		2016		2015
(in thousands except per share amounts)
Numerator
Income used to compute net income per basic and diluted share	$	4,148	$	78,264	$	60,035	$	162,762
Denominator
Total weighted average shares used to compute net income per basic share	163,791		163,544		163,729		163,188
Restricted stock outstanding	238		134		191		117
Effect of dilutive stock options	—		19		—		19
Assumed conversion of Series 2012 Notes	—		—		—		266
Assumed conversion of warrants	—		503		—		1,551
Assumed conversion of May 2015 Notes	—		1,184		—		2,235
Shares used to compute net income per diluted share	164,029		165,384		163,920		167,376
Net income per share - basic	$	0.03	$	0.48	$	0.37	$	1.00
Net income per share - diluted	$	0.03	$	0.47	$	0.37	$	0.97