Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2016

Earnings Per Share [Abstract]

Schedule of Basic And Diluted Earnings Per Share

The computation of basic and diluted earnings per share is shown below (in thousands, except per share amounts).

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Net income	$	18,920	$	32,076	$	57,318	$	87,066
Weighted average common shares outstanding	72,058		71,890		72,043		71,967
Dilutive effect of stock-based awards	348		588		321		579
Shares used in computing diluted earnings per share	72,406		72,478		72,364		72,546
Basic earnings per share	$	0.26	$	0.45	$	0.80	$	1.21
Diluted earnings per share	$	0.26	$	0.44	$	0.79	$	1.20