Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2016

Earnings Per Share [Abstract]

Schedule of earnings per share basic and diluted

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
	(in thousands, except for per share data)
Numerator:
Net Income	$	102,454	$	70,029	$	233,490	$	144,746
Denominator:
Weighted average common stock shares outstanding - Basic	53,427		53,731		53,488		54,266
Assumed exercise of stock options and awards	161		396		219		458
Assumed conversion of convertible note premium	—		350		8		1,618
Assumed conversion of warrants	—		6,351		—		6,139
Weighted average common stock shares outstanding - Diluted	53,588		60,828		53,715		62,481
Net Income Per Share
Basic	$	1.92	$	1.30	$	4.37	$	2.67
Diluted	$	1.91	$	1.15	$	4.35	$	2.32